/*
*
* Copyright (C) 2000 Silicon Graphics, Inc. All Rights Reserved.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* Further, this software is distributed without any warranty that it is
* free of the rightful claim of any third person regarding infringement
* or the like. Any license provided herein, whether implied or
* otherwise, applies only to this software file. Patent licenses, if
* any, provided herein do not apply to combinations of this program with
* other software, or any other product whatsoever.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy,
* Mountain View, CA 94043, or:
*
* http://www.sgi.com
*
* For further information regarding this notice, see:
*
* http://oss.sgi.com/projects/GenInfo/NoticeExplan/
*
*/
/*
* Copyright (C) 1990-95 Silicon Graphics, Inc.
*
*
_______________________________________________________________________
______________ S I L I C O N G R A P H I C S I N C . ____________
|
| $Revision: 1.3 $
|
| Classes : SoSceneViewer
|
| Author(s) : Thad Beier, David Mott, Alain Dumesny, Paul Isaacs,
| Rikk Carey, Dave Immel
|
______________ S I L I C O N G R A P H I C S I N C . ____________
_______________________________________________________________________
*/
// Define this to have menus appear in the popup planes
// instead of the normal planes. You lose menu colors,
// but don't have to redraw the scene just to see a menu.
#ifndef __linux__
#define MENUS_IN_POPUP
#endif
#include <stdlib.h> // for system() and getenv()
#include <unistd.h> // for access()
#include <X11/StringDefs.h>
#include <X11/Intrinsic.h>
#include <X11/Xatom.h>
#include <Xm/Protocols.h>
#include <Xm/Xm.h>
#include <Xm/BulletinB.h>
#include <Xm/CascadeB.h>
#include <Xm/CascadeBG.h>
#include <Xm/FileSB.h>
#include <Xm/Form.h>
#include <Xm/Label.h>
#include <Xm/FileSB.h>
#include <Xm/PushB.h>
#include <Xm/PushBG.h>
#include <Xm/SeparatoG.h>
#include <Xm/Text.h>
#include <Xm/ToggleB.h>
#include <Xm/ToggleBG.h>
#include <Xm/DropTrans.h>
#include <Inventor/SoDB.h>
#include <Inventor/misc/SoByteStream.h>
#include <Inventor/SoNodeKitPath.h>
#include <Inventor/SoPickedPoint.h>
#include <Inventor/SoLists.h>
#include <Inventor/Xt/SoXt.h>
#include <Inventor/Xt/SoXtClipboard.h>
#include <Inventor/Xt/SoXtDirectionalLightEditor.h>
#include <Inventor/Xt/SoXtMaterialEditor.h>
#include <Inventor/Xt/SoXtPrintDialog.h>
#include <Inventor/Xt/SoXtResource.h>
#include <Inventor/Xt/SoXtTransformSliderSet.h>
#include <Inventor/Xt/viewers/SoXtExaminerViewer.h>
#include <Inventor/Xt/viewers/SoXtFlyViewer.h>
#include <Inventor/Xt/viewers/SoXtPlaneViewer.h>
#include <Inventor/Xt/viewers/SoXtWalkViewer.h>
#include <Inventor/actions/SoBoxHighlightRenderAction.h>
#include <Inventor/actions/SoGetBoundingBoxAction.h>
#include <Inventor/actions/SoGetMatrixAction.h>
#include <Inventor/actions/SoSearchAction.h>
#include <Inventor/actions/SoWriteAction.h>
#include <Inventor/details/SoNodeKitDetail.h>
#include <Inventor/draggers/SoDirectionalLightDragger.h>
#include <Inventor/draggers/SoTabBoxDragger.h>
#include <Inventor/manips/SoCenterballManip.h>
#include <Inventor/manips/SoDirectionalLightManip.h>
#include <Inventor/manips/SoHandleBoxManip.h>
#include <Inventor/manips/SoJackManip.h>
#include <Inventor/manips/SoPointLightManip.h>
#include <Inventor/manips/SoSpotLightManip.h>
#include <Inventor/manips/SoTabBoxManip.h>
#include <Inventor/manips/SoTrackballManip.h>
#include <Inventor/manips/SoTransformBoxManip.h>
#include <Inventor/manips/SoTransformerManip.h>
#include <Inventor/nodekits/SoBaseKit.h>
#include <Inventor/nodekits/SoCameraKit.h>
#include <Inventor/nodekits/SoSceneKit.h>
#include <Inventor/nodes/SoCallback.h>
#include <Inventor/nodes/SoCube.h>
#include <Inventor/nodes/SoDirectionalLight.h>
#include <Inventor/nodes/SoEnvironment.h>
#include <Inventor/nodes/SoLabel.h>
#include <Inventor/nodes/SoLight.h>
#include <Inventor/nodes/SoMaterial.h>
#include <Inventor/nodes/SoOrthographicCamera.h>
#include <Inventor/nodes/SoPointLight.h>
#include <Inventor/nodes/SoSelection.h>
#include <Inventor/nodes/SoShape.h>
#include <Inventor/nodes/SoSpotLight.h>
#include <Inventor/nodes/SoSwitch.h>
#include <Inventor/nodes/SoTranslation.h>
#include "SoSceneViewer.h"
#include "SoSceneMenu.h"
#include "SvManipList.h"
#include "../../samples/widgets/MyColorEditor.h"
#include "../../samples/widgets/MyFileRead.h"
#include "../../samples/widgets/MyDropSite.h"
#include "../../samples/common/InventorLogo.h"
#include <GL/gl.h>
#include <malloc.h>
#ifdef DEBUG
#include <assert.h>
#endif
//
// Macros and constants
//
// toggle button macros
#define TOGGLE_ON(BUTTON) \
XmToggleButtonSetState((Widget) BUTTON, TRUE, FALSE)
#define TOGGLE_OFF(BUTTON) \
XmToggleButtonSetState((Widget) BUTTON, FALSE, FALSE)
#define FOG_FUDGE 1.6
#define SV_NUM_LIGHTS 6
#define SWITCH_LIGHT_OFF(SWITCH) (SWITCH)->whichChild.setValue(SO_SWITCH_NONE)
#define SWITCH_LIGHT_ON(SWITCH) (SWITCH)->whichChild.setValue(SO_SWITCH_ALL)
#define IS_LIGHT_ON(SWITCH) ((SWITCH)->whichChild.getValue() == SO_SWITCH_ALL)
#define SV_ENV_LABEL "SoSceneViewer Environment v3.0"
#define _ATOM_(DISPLAY,NAME) (XmInternAtom(DISPLAY, NAME, False))
#define SCREEN(w) XScreenNumberOfScreen(XtScreen(w))
//
// Structs
//
struct SoSceneViewerData {
int id;
SoSceneViewer *classPt;
Widget widget;
};
class SvLightData {
public:
// Constructor inits everything to NULL
SvLightData();
SoSceneViewer *classPt;
SoSwitch *lightSwitch;
SoTranslation *translation; // for placing a directional light manip
SoScale *scale;
SoLight *light;
SoScale *scaleInverse;
SoTranslation *translationInverse;
SoType type;
char *name;
MyColorEditor *colorEditor;
SbBool isManip();
SbBool shouldBeManip; // Used to remember what it was when
// they all get turned off for writing,
// printing, etc.
Widget cascadeWidget;
Widget submenuWidget;
Widget onOffWidget;
Widget iconWidget;
Widget editColorWidget;
Widget removeWidget;
};
SvLightData::SvLightData()
{
classPt = NULL;
lightSwitch = NULL;
translation = NULL;
scale = NULL;
light = NULL;
scaleInverse = NULL;
translationInverse = NULL;
name = NULL;
colorEditor = NULL;
shouldBeManip = FALSE;
cascadeWidget = NULL;
submenuWidget = NULL;
onOffWidget = NULL;
iconWidget = NULL;
editColorWidget = NULL;
removeWidget = NULL;
}
SbBool SvLightData::isManip()
{
if (light == NULL)
return FALSE;
if (light->isOfType( SoDirectionalLightManip::getClassTypeId()))
return TRUE;
else if (light->isOfType( SoPointLightManip::getClassTypeId()) )
return TRUE;
else if (light->isOfType( SoSpotLightManip::getClassTypeId()) )
return TRUE;
return FALSE;
}
////////////////////////////////////////////////////////////////////////
//
// Set the Inventor logo on the screen.
//
static void
logoCB(void *, SoAction *action)
{
if (action->isOfType(SoGLRenderAction::getClassTypeId())) {
glViewport(0, 0, 80, 80);
}
}
static void
setOverlayLogo(SoXtRenderArea *ra)
{
#ifdef __sgi
static SoSeparator *logo = NULL;
if (logo == NULL) {
SoInput in;
in.setBuffer((void *)ivLogo, ivLogoSize);
logo = SoDB::readAll(&in);
logo->ref();
// Add a callback node which will set the viewport
SoCallback *cb = new SoCallback;
cb->setCallback(logoCB);
logo->insertChild(cb, 0);
}
SbColor col(1, 1, 1);
ra->setOverlayColorMap(1, 1, &col);
ra->setOverlaySceneGraph(logo);
#endif
}
//
////////////////////////////////////////////////////////////////////////
////////////////////////////////////////////////////////////////////////
//
// Public constructor - build the widget right now
//
SoSceneViewer::SoSceneViewer(
Widget parent,
const char *name,
SbBool buildInsideParent,
SoSelection *inputGraph,
const char *envFile)
: SoXtComponent(
parent,
name,
buildInsideParent)
//
////////////////////////////////////////////////////////////////////////
{
// In this case, render area is what the app wants, so buildNow = TRUE
constructorCommon(inputGraph, envFile, TRUE);
}
////////////////////////////////////////////////////////////////////////
//
// SoEXTENDER constructor - the subclass tells us whether to build or not
//
SoSceneViewer::SoSceneViewer(
Widget parent,
const char *name,
SbBool buildInsideParent,
SoSelection *inputGraph,
const char *envFile,
SbBool buildNow)
: SoXtComponent(
parent,
name,
buildInsideParent)
//
////////////////////////////////////////////////////////////////////////
{
// In this case, render area may be what the app wants,
// or it may want a subclass of render area. Pass along buildNow
// as it was passed to us.
constructorCommon(inputGraph, envFile, buildNow);
}
////////////////////////////////////////////////////////////////////////
//
// Called by the constructors
//
// private
//
void
SoSceneViewer::constructorCommon(
SoSelection *inputGraph,
const char *envFile,
SbBool buildNow)
//
////////////////////////////////////////////////////////////////////////
{
int i;
// getting resources.
XtGetSubresources( getParentWidget(), &fileData[0], "intl", "Intl",
intl_file_resources, intl_num_file_resources,
NULL, 0 );
XtGetSubresources( getParentWidget(), &editData[0], "intl", "Intl",
intl_edit_resources, intl_num_edit_resources,
NULL, 0 );
XtGetSubresources( getParentWidget(), &manipData[0], "intl", "Intl",
intl_manip_resources, intl_num_manip_resources,
NULL, 0 );
XtGetSubresources( getParentWidget(), &selData[0], "intl", "Intl",
intl_sel_resources, intl_num_sel_resources,
NULL, 0 );
XtGetSubresources( getParentWidget(), &viewData[0], "intl", "Intl",
intl_view_resources, intl_num_view_resources,
NULL, 0 );
XtGetSubresources( getParentWidget(), &editorData[0], "intl", "Intl",
intl_editor_resources, intl_num_editor_resources,
NULL, 0 );
XtGetSubresources( getParentWidget(), &lightData[0], "intl", "Intl",
intl_light_resources, intl_num_light_resources,
NULL, 0 );
XtGetSubresources( getParentWidget(), &pulldownData[0], "intl", "Intl",
intl_pulldown_resources, intl_num_pulldown_resources,
NULL, 0 );
setClassName("SoSceneViewer");
setSize( SbVec2s(520, 510) );
// selection is the users scene graph.
selection = inputGraph;
currentViewer = NULL;
createLightsCameraEnvironment();
// the scene viewer supplies its own camera and lights.
// in fact, we remove any cameras that might be in the users graph.
// NOTE: since the camera may be switched by the viewer (ortho/perspective toggle)
// make sure to get the camera from the viewer (and not cache the camera).
sceneGraph = new SoSeparator();
sceneGraph->ref(); // must ref it
sceneGraph->addChild(lightsCameraEnvironment);
sceneGraph->addChild(selection);
// Create the dictionary that keeps track of original camera
// settings in scenekits
sceneKitCamNumDict = new SbDict(5);;
#ifndef EXPLORER
SoCamera *camFromScene = getLastSceneKitCamera(selection);
switchOffSceneKitCameras(selection);
removeCameras(selection);
#endif
//
// Widget and menu variables
//
mgrWidget = NULL;
showMenuFlag = TRUE;
menuWidget = NULL;
menuItems = new SoSceneViewerData[SV_MENU_NUM];
for (i=0; i<SV_MENU_NUM; i++) {
menuItems[i].id = i;
menuItems[i].classPt = this;
menuItems[i].widget = NULL;
}
//
// File
//
fileName = NULL;
fileDialog = NULL;
printDialog = NULL;
//
// Viewing
//
// Allocate only one viewer at a time. The other viewers will
// be allocated as needed to increase speed and save memory.
//
for (i=0; i<4; i++)
viewerList[i] = NULL;
// fog
fogFlag = FALSE;
environment->fogType.setValue( SoEnvironment::NONE );
antialiasingFlag = FALSE;
backgroundColorEditor = NULL;
//
// Selection
// These callbacks are used to update the SceneViewer state after
// the current selection changes (e.g. attach/detach editors and manips).
//
selection->addSelectionCallback(SoSceneViewer::selectionCallback, this);
selection->addDeselectionCallback(SoSceneViewer::deselectionCallback, this);
selection->setPickFilterCallback(SoSceneViewer::pickFilterCB, this);
highlightRA = new SoBoxHighlightRenderAction;
//
// Editors
//
ignoreCallback = FALSE;
materialEditor = NULL;
colorEditor = NULL;
transformSliderSet = NULL;
//
// Manips
//
curManip = SV_NONE;
highlightRA->setVisible(TRUE); // highlight visible when no manip
curManipReplaces = TRUE;
maniplist = new SvManipList;
#ifdef EXPLORER
//
// User callback
//
userModeCB = NULL;
userModedata = NULL;
userModeFlag = FALSE;
#endif /* EXPLORER */
//
// Lights
//
ambientColorEditor = NULL;
headlightData = new SvLightData;
headlightData->classPt = this;
headlightData->name = Light.headlight;
headlightData->type = SoDirectionalLight::getClassTypeId();
headlightData->colorEditor = NULL;
headlightData->shouldBeManip = FALSE;
headlightEditor = NULL;
calculatedLightManipSize = FALSE;
// Build the widget tree, and let SoXtComponent know about our base widget.
if (buildNow) {
Widget w = buildWidget(getParentWidget());
setBaseWidget(w);
}
// do this after everything else has been set up (viewer needs to exists
// because the camera is gotten from the viewer (not cached here))
if (envFile != NULL)
readEnvFile(envFile);
// If scene had sceneKit with a camera, copy its values into our camera.
if (camFromScene)
setCameraFields( camFromScene );
}
////////////////////////////////////////////////////////////////////////
//
// Description:
// Destructor.
//
// Use: public
SoSceneViewer::~SoSceneViewer()
//
////////////////////////////////////////////////////////////////////////
{
// Delete the dictionary that keeps track of original camera
// settings in scenekits
delete sceneKitCamNumDict;
// detach and delete the manips
detachManipFromAll();
delete maniplist;
// detach and delete the viewers
currentViewer->setSceneGraph(NULL);
delete (SoXtExaminerViewer *) viewerList[SV_VWR_EXAMINER];
delete (SoXtFlyViewer *) viewerList[SV_VWR_FLY];
delete (SoXtWalkViewer *) viewerList[SV_VWR_WALK];
delete (SoXtPlaneViewer *) viewerList[SV_VWR_PLANE];
// delete menu items data
delete [ /*SV_MENU_NUM*/ ] menuItems;
delete headlightData;
delete headlightEditor;
delete printDialog;
// Editor components
delete materialEditor;
delete colorEditor;
delete transformSliderSet;
delete ambientColorEditor;
delete backgroundColorEditor;
sceneGraph->unref();
}
////////////////////////////////////////////////////////////////////////
//
// Description:
// New data is going to be coming into the viewer. Time to disconnect all
// manipulators and picking, and wait for new information. Might as well go
// into a viewing mode as well, this gets rid of the manipulators, and puts
// the user in control of viewing when new data shows up.
//
// Use: public
void
SoSceneViewer::newData()
//
////////////////////////////////////////////////////////////////////////
{
selection->deselectAll();
}
#ifdef EXPLORER
////////////////////////////////////////////////////////////////////////
//
// Description:
// This sets the user mode callack routine
//
// Use: public
void
SoSceneViewer::setUserModeEventCallback(SoXtRenderAreaEventCB *fcn)
//
////////////////////////////////////////////////////////////////////////
{
userModeCB = fcn;
userModedata = currentViewer->getSceneGraph();
if (userModeFlag)
currentViewer->setEventCallback(userModeCB, userModedata);
}
#endif /* EXPLORER */
////////////////////////////////////////////////////////////////////////
//
// Description:
// switches from the current viewer to the given viewer. The new
// viewer will automatically be allocated if needed, and set to have
// the same settings the current viewer has (drawing style, buffer
// type, etc..).
//
// Use: private
void
SoSceneViewer::switchToViewer(SvEViewer newViewer)
//
////////////////////////////////////////////////////////////////////////
{
if (whichViewer == newViewer)
return;
// remove the sensor + scene graph from the old viewer (to prevent
// an unecessary redraw of the old viewer)
currentViewer->setAutoRedraw(FALSE);
currentViewer->setSceneGraph(NULL);
// allocate the viewer if needed and set the window title.
// all viewers share the same highlight render action.
switch (newViewer) {
case SV_VWR_EXAMINER:
// examiner vwr is already created in build()
setTitle("SceneViewer (Examiner)");
break;
case SV_VWR_FLY:
if ( viewerList[newViewer] == NULL ) {
viewerList[newViewer] = new SoXtFlyViewer(mgrWidget);
viewerList[newViewer]->setGLRenderAction(highlightRA);
viewerList[newViewer]->redrawOnSelectionChange(selection);
}
setTitle("SceneViewer (Fly)");
break;
case SV_VWR_WALK:
if ( viewerList[newViewer] == NULL ) {
viewerList[newViewer] = new SoXtWalkViewer(mgrWidget);
viewerList[newViewer]->setGLRenderAction(highlightRA);
viewerList[newViewer]->redrawOnSelectionChange(selection);
}
setTitle("SceneViewer (Walk)");
break;
case SV_VWR_PLANE:
if ( viewerList[newViewer] == NULL ) {
viewerList[newViewer] = new SoXtPlaneViewer(mgrWidget);
viewerList[newViewer]->setGLRenderAction(highlightRA);
viewerList[newViewer]->redrawOnSelectionChange(selection);
}
setTitle("SceneViewer (Plane)");
break;
}
SoXtFullViewer *newVwr = viewerList[newViewer];
// re-init the render action (since it is shared between viewers) now that
// we are changing windows + set the new scene graph
newVwr->setAutoRedraw(TRUE);
newVwr->setSceneGraph(sceneGraph);
newVwr->getGLRenderAction()->invalidateState();
//
// make sure the new viewer has all the same settings as
// the current viewer.
//
// XtRenderArea methods
//???can't each viewer have it's own background color? especially
//???if we nuke the background color editor. The user might set the
//???colors to be different in the app-defaults file.
//???newVwr->setBackgroundColor( currentViewer->getBackgroundColor() );
environment->fogColor.setValue( newVwr->getBackgroundColor() );
newVwr->setClearBeforeRender( currentViewer->isClearBeforeRender() );
// XtViewer methods
newVwr->setHeadlight( currentViewer->isHeadlight() );
newVwr->setDrawStyle(
SoXtViewer::STILL,
currentViewer->getDrawStyle(SoXtViewer::STILL) );
newVwr->setDrawStyle(
SoXtViewer::INTERACTIVE,
currentViewer->getDrawStyle(SoXtViewer::INTERACTIVE) );
newVwr->setBufferingType( currentViewer->getBufferingType() );
newVwr->setViewing( currentViewer->isViewing() );
newVwr->setAutoClipping( currentViewer->isAutoClipping() );
newVwr->setSeekTime( currentViewer->getSeekTime() );
// XtFullViewer methods
newVwr->setDecoration( currentViewer->isDecoration() );
// The tabBoxManip adds a finish callback to the viewer.
// We need to remove from the old and add to the new.
for (int m = 0; m < maniplist->getLength(); m++ ) {
SoTransformManip *manip = maniplist->getManip(m);
if ( manip->isOfType( SoTabBoxManip::getClassTypeId() ) ) {
currentViewer->removeFinishCallback(
&SoSceneViewer::adjustScaleTabSizeCB, manip->getDragger() );
newVwr->addFinishCallback(
&SoSceneViewer::adjustScaleTabSizeCB, manip->getDragger() );
}
}
#ifdef EXPLORER
if (userModeFlag)
newVwr->setEventCallback(userModeCB, userModedata);
else
newVwr->setEventCallback(NULL, NULL);
#endif
// build and layout the new viewer
buildAndLayoutViewer(newVwr);
// finally switch to the new viewer by showing the new viewer,
// and hidding the old viewer (hide is done last to reduce flicker).
newVwr->show();
currentViewer->hide();
whichViewer = newViewer;
currentViewer = newVwr;
setOverlayLogo(currentViewer);
}
////////////////////////////////////////////////////////////////////////
//
// Description:
// Move up the picked path to the parent group.
//
// Use: public
void
SoSceneViewer::pickParent()
//
////////////////////////////////////////////////////////////////////////
{
SoFullPath *pickPath;
int parentIndex;
// We'll pick the parent of the last selection in the list...
pickPath = (SoFullPath *) (*selection)[selection->getNumSelected() - 1];
if(pickPath == NULL || pickPath->getLength() < 2)
return;
// Get actual node that is the current selection:
SoNode *tail = pickPath->getTail();
SoNode *kitTail = ((SoNodeKitPath *)pickPath)->getTail();
SoType nkt = SoBaseKit::getClassTypeId();
if ( kitTail->isOfType( nkt ) )
tail = kitTail;
else
kitTail = NULL;
// If kitTail is at top of path, we've already gone as high as we can go.
if ( kitTail == pickPath->getHead() )
return;
// Get index of parent of selection.
if ( kitTail != NULL ) {
// Look for first kit above tail. If none, use direct parent of kitTail.
SoNode *aboveTail = ((SoNodeKitPath *)pickPath)->getNodeFromTail( 1 );
SbBool aboveIsKit = aboveTail->isOfType( nkt );
for (int i = pickPath->getLength() - 1; i >= 0; i-- ) {
if ( aboveIsKit ) {
if (pickPath->getNode(i) == aboveTail ) {
parentIndex = i;
break;
}
}
else if ( pickPath->getNode(i) == kitTail ) {
parentIndex = i - 1;
break;
}
}
}
else {
// If tail is not a nodkeit, parentIndex is just parent of tail...
parentIndex = pickPath->getLength() - 2;
}
// cannot select the selection node (make sure we're not)
if (pickPath->getNode(parentIndex) == selection) {
fprintf(stderr, "No more parents to pick (cannot pick above the selection node)\n");
return;
}
pickPath->ref(); // need to ref it, because
// selection->clear unref's it
selection->deselectAll();
pickPath->truncate(parentIndex + 1); // Make path end at parentIndex
selection->select(pickPath); // add path back in
pickPath->unref(); // now we can unref it, again
}
////////////////////////////////////////////////////////////////////////
//
// Description:
// Pick all group nodes and shapes under selection.
//
// Use: private
void
SoSceneViewer::pickAll()
//
////////////////////////////////////////////////////////////////////////
{
selection->deselectAll();
#ifdef DEBUG
assert(selection != NULL);
#endif
SoPathList myPaths;
// Our callbacks on the selection's 'select' method may add
// more children to the selection node (by making a trackball or handlebox)
// Therefore, we must first determine the selections by storing
// paths to them.
// Following this, we call 'select' on each path, in turn.
//
// Create paths from the selection node to all of it's children
// that are groups or shapes.
//
for (int i = 0; i < selection->getNumChildren(); i++) {
SoNode *node = selection->getChild(i);
if ((node->isOfType(SoGroup::getClassTypeId()) ||
node->isOfType(SoShape::getClassTypeId())) )
{
SoPath *thisPath = new SoPath(selection);
thisPath->append(i);
myPaths.append( thisPath );
}
}
//
// Select each path in 'myPaths'
//
for (int j = 0; j < myPaths.getLength(); j++)
selection->select(myPaths[j]);
}
////////////////////////////////////////////////////////////////////////
//
// Description:
// This routine first detaches manipulators from all selected objects,
// then attaches a manipulator to all selected objects.
//
// Use: private
void
SoSceneViewer::replaceAllManips(
SvEManipMode manipMode ) // Current manipulator
//
////////////////////////////////////////////////////////////////////////
{
detachManipFromAll();
attachManipToAll( manipMode );
}
////////////////////////////////////////////////////////////////////////
//
// Description:
// This routine attaches a manipulator to all selected objects.
//
// Use: private
void
SoSceneViewer::attachManipToAll(
SvEManipMode manipMode ) // Current manipulator
//
////////////////////////////////////////////////////////////////////////
{
int i;
for ( i = 0; i < selection->getNumSelected(); i++ ) {
SoPath *p = (*selection)[i];
attachManip( manipMode, p );
}
}
////////////////////////////////////////////////////////////////////////
//
// Description:
// This routine attaches and activates a manipulator.
//
// Use: private
void
SoSceneViewer::attachManip(
SvEManipMode manipMode, // Current manipulator
SoPath *selectedPath ) // Which selection to attach to
//
////////////////////////////////////////////////////////////////////////
{
SoTransformManip *theXfManip;
SoPath *xfPath;
//
// Attach to a manipulator.
//
if ( manipMode == SV_NONE )
return;
xfPath = findTransformForAttach( selectedPath );
xfPath->ref();
theXfManip = NULL;
switch( manipMode ) {
case SV_TRANSFORMER:
theXfManip = new SoTransformerManip;
break;
case SV_TRACKBALL:
theXfManip = new SoTrackballManip;
break;
case SV_HANDLEBOX:
theXfManip = new SoHandleBoxManip;
break;
case SV_JACK:
theXfManip = new SoJackManip;
break;
case SV_CENTERBALL:
theXfManip = new SoCenterballManip;
break;
case SV_XFBOX:
theXfManip = new SoTransformBoxManip;
break;
case SV_TABBOX:
theXfManip = new SoTabBoxManip;
break;
case SV_NONE:
return;
}
if ( theXfManip ) {
SoFullPath *fp = (SoFullPath *) xfPath;
#ifdef DEBUG
if ( !fp->getTail()->isOfType( SoTransform::getClassTypeId() ) ) {
fprintf(stderr,"DBG> Fatal Error: in SoSceneViewer::attachManip\n");
fprintf(stderr," > end of path is not a transform\n");
}
#endif
SoTransform *oldXf = (SoTransform *)fp->getTail();
oldXf->ref();
theXfManip->ref();
if ( !theXfManip->replaceNode( xfPath ) ) {
theXfManip->unref();
#ifdef DEBUG
fprintf(stderr,"DBG> Fatal Error: in SoSceneViewer::attachManip\n");
fprintf(stderr," > manip->replaceNode() failed!\n" );
#endif
}
// If the transformSliderSet is attached to the oldXf, then attach
// it to the new manip instead.
if ( transformSliderSet && transformSliderSet->isVisible()
&& transformSliderSet->getNode() == oldXf)
transformSliderSet->setNode(theXfManip);
// Add manip and paths to the maniplist (maniplist will ref/unref)
maniplist->append(selectedPath, theXfManip, xfPath );
theXfManip->unref();
oldXf->unref();
if ( manipMode == SV_TABBOX ) {
// Special case! When using a tab box, we want to adjust the
// scale tabs upon viewer finish.
currentViewer->addFinishCallback(
&SoSceneViewer::adjustScaleTabSizeCB,theXfManip->getDragger());
}
if ( manipMode == SV_JACK ) {
// Special case! For jack manip, we want it so that clicking on the
// selected object initiates 2-dimensional translation. Other
// parts of the jack manip should use the default resource geometry.
// So, we replace the parts that do planar motion.
// We need to replace a total of six parts:
// 'translator.yzTranslator.translator':
// 'translator.xzTranslator.translator':
// 'translator.xyTranslator.translator':
// 'translator.yzTranslator.translatorActive':
// 'translator.xzTranslator.translatorActive':
// 'translator.xyTranslator.translatorActive':
// In the SoJackDragger, 'translator' is an SoDragPointDragger,
// which takes care of all translations in 3 dimensions for jack.
// In the SoDragPointDragger there are 3 planar translation parts
// (each is an SoTranslate2Dragger) and 3 linear translation parts
// (each is an SoTranslate1Dragger). At any given time, dragPoint
// displays one of each kind of dragger. We leave the linear
// translators as the default geometry (a cylinder along the axis
// of motion), but replace the geometry in the planar translators.
// Within the SoDragPointDragger, the planar translators are named
// 'yzTranslator', 'xzTranslator', and 'xyTranslator'.
// Each of these is an SoTranslate2Dragger, which has two parts
// for its geometry, 'translator' and 'translatorActive.' Clicking
// on the 'translator' is what initiates the 2D translation.
// Once begun, the 'translatorActive' part is displayed. We
// replace both of these parts with a path to the selected object.
// When we call setPartAsPath, we need to prune the path if our
// selected geometry lays inside a nodekit.
// For example, let's say a dumbBellKit contains 1 bar (a cylinder)
// and 2 end (spheres). Since this is the lowest-level kit
// containing these 3 shapes, they are considered a single object
// by the SceneViewer.
// So we need to pass a path to the kit, not the individual piece
// that is selected. This way, subsequent clicks on any piece of
// the dumbbell will cause 2D translation.
// First, is a nodekit on the path? If so, find the last one.
SoFullPath *jackP = (SoFullPath *) selectedPath;
SoType bkType = SoBaseKit::getClassTypeId();
int lastKitInd = -1;
for (int i = jackP->getLength() - 1; i >= 0; i--) {
if (jackP->getNode(i)->isOfType(bkType)) {
lastKitInd = i;
break;
}
}
// If there's a lastKitInd, make jackP be a copy of
// selectedPath, but only up to lastKitInd.
if ( lastKitInd != -1)
jackP = (SoFullPath *) selectedPath->copy(0,lastKitInd + 1);
// Get the dragger from the manip (the manip contains the dragger,
// and the dragger has the parts).
SoDragger *d = theXfManip->getDragger();
// Use jackP to set the translator parts, then discard (unref) it:
jackP->ref();
d->setPartAsPath("translator.yzTranslator.translator", jackP );
d->setPartAsPath("translator.xzTranslator.translator", jackP );
d->setPartAsPath("translator.xyTranslator.translator", jackP );
d->setPartAsPath(
"translator.yzTranslator.translatorActive", jackP);
d->setPartAsPath(
"translator.xzTranslator.translatorActive", jackP);
d->setPartAsPath(
"translator.xyTranslator.translatorActive", jackP);
jackP->unref();
}
}
xfPath->unref();
}
////////////////////////////////////////////////////////////////////////
//
// Description:
// This routine detaches the manipulators from all selected objects.
//
// Use: private
void
SoSceneViewer::detachManipFromAll()
//
////////////////////////////////////////////////////////////////////////
{
//
// Loop from the end of the list to the start.
//
for (int i = selection->getNumSelected() - 1; i >= 0 ; i-- ) {
SoPath *p = (SoPath *) (*selection)[i];
detachManip( p );
}
}
////////////////////////////////////////////////////////////////////////
//
// Description:
// This routine detaches a manipulator.
//
// Use: private
void
SoSceneViewer::detachManip(
SoPath *p ) // Selection object that is being removed
//
////////////////////////////////////////////////////////////////////////
{
//
// Detach manip and remove from scene graph.
//
int which = maniplist->find(p);
// See if this path is registered in the manip list.
if (which != -1) {
// remove from scene graph
SoTransformManip *manip = maniplist->getManip(which);
if ( manip->isOfType(SoTabBoxManip::getClassTypeId() )) {
// Special case! When using a tab box, we want to adjust the
// scale tabs upon viewer finish.
currentViewer->removeFinishCallback(
&SoSceneViewer::adjustScaleTabSizeCB, manip->getDragger() );
}
SoPath *xfPath = maniplist->getXfPath(which);
SoTransform *newXf = new SoTransform;
newXf->ref();
manip->ref();
// replace the manip
manip->replaceManip( xfPath, newXf );
// If the transformSliderSet is attached to the manip, then attach
// it to the new node instead.
if ( transformSliderSet && transformSliderSet->isVisible()
&& transformSliderSet->getNode() == manip)
transformSliderSet->setNode(newXf);
manip->unref();
newXf->unref();
// remove from maniplist
maniplist->remove(which);
}
}
////////////////////////////////////////////////////////////////////////
//
// Description:
// Added as a finish callback to the current viewer. It makes sure
// the scale tab size gets changed when a viewer gesture is
// completed.
//
// Use: public
void
SoSceneViewer::adjustScaleTabSizeCB( void *userData, SoXtViewer *)
//
////////////////////////////////////////////////////////////////////////
{
SoTabBoxDragger *dragger = (SoTabBoxDragger *) userData;
dragger->adjustScaleTabSize();
}
////////////////////////////////////////////////////////////////////////
//
// Description:
// See the selection from the camera
//
// Use: public
void
SoSceneViewer::viewSelection()
//
////////////////////////////////////////////////////////////////////////
{
if (selection->getNumSelected() == 0) {
viewAll();
return;
}
SoPath *path = (*selection)[0];
if(path != NULL) {
getCamera()->viewAll(path, currentViewer->getViewportRegion());
}
else {
viewAll();
return;
}
}
////////////////////////////////////////////////////////////////////////
//
// Description:
// Create a color editor for the currently selected object.
// Attachment code copied from SoXformManip.c++
//
// Use: private
void
SoSceneViewer::createColorEditor()
//
////////////////////////////////////////////////////////////////////////
{
if (colorEditor == NULL) {
colorEditor = new MyColorEditor;
colorEditor->setWYSIWYG(TRUE);
colorEditor->setTitle("Diffuse Color");
}
SoMaterial *editMaterial = findMaterialForAttach( NULL );
colorEditor->attach(&(editMaterial->diffuseColor), 0, editMaterial);
colorEditor->show();
}
////////////////////////////////////////////////////////////////////////
//
// Description:
// Find the appropriate material node in the scene graph to attach a material
// editor to.
//
// Two possible cases:
// [1] The path-tail is NOT a group. We search the siblings of the path
// tail (including the tail itself) from right to left for a node
// that is affected by materials (shapes or groups).
// We stop the search if we come to a material node to the left of the
// pathTail. If we find a node that IS affected by material, we will
// insert a material node just before the path-tail. This is
// because the editor should not affect nodes that appear
// before attachPath in the scene graph.
// [2] The path-tail IS a group. We search the children from left to
// right for material nodes.
// We stop the search if we come to a material node.
// If we find a node that is affected by materials, we will insert a
// material just before this node. This is because the editor for a
// group should affect ALL nodes within that group.
//
// NOTE: For the purposes of this routine, we consider SoSwitch as different
// from other types of group. This is because we don't want to put
// the new node underneath the switch, but next to it.
//
// Use: private
//
SoMaterial *
SoSceneViewer::findMaterialForAttach(
const SoPath *target ) // path to start search from
//
////////////////////////////////////////////////////////////////////////
{
int pathLength;
SoPath *selectionPath;
SoMaterial *editMtl;
SbBool madeNewMtl = FALSE; // did we create a new material
// node within this method?
if ( ( selectionPath = (SoPath *) target ) == NULL ) {
//
// If no selection path is specified, then use the LAST path in the
// current selection list.
//
selectionPath = (*selection)[selection->getNumSelected() - 1]; // last guy
}
pathLength = selectionPath->getLength();
if ( pathLength <= 0 ) {
fprintf( stderr, "No objects currently selected...\n" );
return NULL;
}
#ifdef DEBUG
if ( pathLength < 2 ) {
fprintf( stderr, "Picked object has no parent...\n" );
return NULL;
}
#endif
// find 'group' and try to find 'editMtl'
SoGroup *group;
SoNode *node;
int index, i;
SbBool ignoreNodekit = FALSE;
editMtl = NULL;
if ( selectionPath->getTail()->isOfType( SoBaseKit::getClassTypeId() )) {
// Nodekits have their own built in policy for creating new material
// nodes. Allow them to contruct and return it.
// Get the last nodekit in the path:
SoBaseKit *kit = (SoBaseKit *)
((SoNodeKitPath *)selectionPath)->getTail();
// SO_CHECK_PART returns NULL if the part doesn't exist yet...
editMtl = SO_GET_PART( kit, "material", SoMaterial );
if ( editMtl == NULL ) {
// This nodekit does not have a material part.
// Ignore the fact that this is a nodekit.
ignoreNodekit = TRUE;
}
}
SbBool isTailGroup =
selectionPath->getTail()->isOfType( SoGroup::getClassTypeId()) &&
(!selectionPath->getTail()->isOfType( SoSwitch::getClassTypeId()));
if ((editMtl == NULL) && ( !isTailGroup )) {
//
// CASE 1: The path-tail is not a group.
// 'group' becomes the second to last node in the path.
// We search the path tail and its siblings from right to left for a
// mtl node.
// We stop the search if we come to a shape node or a group node
// to the left of the pathTail. If we find a shape or group, we
// will insert a mtl just before the path-tail. This is
// because the manipulator should not affect objects that appear
// before selectionPath in the scene graph.
//
group = (SoGroup *) selectionPath->getNode(pathLength - 2);
index = group->findChild( selectionPath->getTail() );
for (i = index; (i >= 0) && (editMtl == NULL); i--){
node = group->getChild(i);
if (node->isOfType(SoMaterial::getClassTypeId())) // found SoMaterial
editMtl = (SoMaterial *) node;
else if ( i != index ) {
if ( isAffectedByMaterial( node ) )
break;
}
}
if ( editMtl == NULL ) {
editMtl = new SoMaterial;
group->insertChild( editMtl, index );
madeNewMtl = TRUE;
}
}
else if (editMtl == NULL) {
// CASE 2: The path-tail is a group.
// 'group' becomes the path tail
// We search the children from left to right for mtl nodes.
// We stop the search if we come to a shape node or a group node.
// If we find a shape or group, we will insert a mtl just
// before this shape or group. This is because the editor
// for a group should affect ALL objects within that group.
//
group = (SoGroup *) selectionPath->getTail();
for (i = 0; (i < group->getNumChildren()) && (editMtl == NULL); i++ ) {
node = group->getChild(i);
if (node->isOfType(SoMaterial::getClassTypeId()))
editMtl = (SoMaterial *) node;
else if ( isAffectedByMaterial( node ) )
break;
}
if ( editMtl == NULL ) {
editMtl = new SoMaterial;
group->insertChild( editMtl, i );
madeNewMtl = TRUE;
}
}
// If we just created the material node here, then set the ignore
// flags for all fields in the node. This will cause the fields
// to be inherited from their ancestors. The material editor will
// undo these flags whenever it changes the value of a field
if ( madeNewMtl == TRUE ) {
editMtl->ambientColor.setIgnored( TRUE );
editMtl->diffuseColor.setIgnored( TRUE );
editMtl->specularColor.setIgnored( TRUE );
editMtl->emissiveColor.setIgnored( TRUE );
editMtl->shininess.setIgnored( TRUE );
editMtl->transparency.setIgnored( TRUE );
}
// If any of the fields is ignored, then fill the value with the value
// inherited from the rest of the scene graph
if ( editMtl->ambientColor.isIgnored()
|| editMtl->diffuseColor.isIgnored()
|| editMtl->specularColor.isIgnored()
|| editMtl->emissiveColor.isIgnored()
|| editMtl->shininess.isIgnored()
|| editMtl->transparency.isIgnored() ){
// Create a path to the material
SoPath *mtlPath;
if ( (! ignoreNodekit) && selectionPath->getTail()->isOfType( SoBaseKit::getClassTypeId() )) {
SoBaseKit *kit = (SoBaseKit *)
((SoNodeKitPath *)selectionPath)->getTail();
mtlPath = kit->createPathToPart( "material", TRUE, selectionPath );
mtlPath->ref();
}
else {
if ( !isTailGroup ) {
// CASE 1: path-tail was NOT 'group' -- copy all but last entry
mtlPath = selectionPath->copy(0, pathLength - 1);
}
else {
// CASE 2: path-tail was 'group' -- copy all of editPath
mtlPath = selectionPath->copy(0, pathLength);
}
mtlPath->ref();
// add the material to the end of the path
int mtlIndex = group->findChild(editMtl);
mtlPath->append( mtlIndex );
}
// Pass the material node to an accumulate state callback
// that will load any 'ignored' values with their inherited values.
SoCallbackAction cba;
cba.addPreTailCallback( SoSceneViewer::findMtlPreTailCB, editMtl);
cba.apply( mtlPath );
mtlPath->unref();
}
return( editMtl );
}
////////////////////////////////////////////////////////////////////////
//
// Description:
// Callback used by 'findMaterialForAttach' as part of the accumulate state
// action. Returns 'PRUNE', which tells the action not to draw the
// shape as part of the accum state action.
// editor to.
//
// Use: private
//
SoCallbackAction::Response
SoSceneViewer::findMtlPreTailCB( void *data, SoCallbackAction *accum,
const SoNode * )
//
////////////////////////////////////////////////////////////////////////
{
SoMaterial *mtl = (SoMaterial *) data;
SbColor ambient, diffuse, specular, emissive;
float shininess, transparency;
accum->getMaterial( ambient, diffuse, specular, emissive,
shininess, transparency );
// inherit the accumulated values only in those fields being ignored.
if ( mtl->ambientColor.isIgnored() )
mtl->ambientColor.setValue( ambient );
if ( mtl->diffuseColor.isIgnored() )
mtl->diffuseColor.setValue( diffuse );
if ( mtl->specularColor.isIgnored() )
mtl->specularColor.setValue( specular );
if ( mtl->emissiveColor.isIgnored() )
mtl->emissiveColor.setValue( emissive );
if ( mtl->shininess.isIgnored() )
mtl->shininess.setValue( shininess );
if ( mtl->transparency.isIgnored() )
mtl->transparency.setValue( transparency );
return SoCallbackAction::ABORT;
}
////////////////////////////////////////////////////////////////////////
//
// Description:
// Find the appropriate transform node in the scene graph for attaching a
// transform editor or manipulator.
//
// How we treat the 'center' field of the transform node:
// If we need to create a new transform node:
// set the 'center' to be the geometric center of all objects
// affected by that transform.
// If we find a transform node that already exists:
// 'center' will not be changed.
//
// Three possible cases:
// [1] The path-tail is a node kit. Just ask the node kit for a path
// to the part called "transform"
// [2] The path-tail is NOT a group. We search the siblings of the path
// tail (including the tail itself) from right to left for a node
// that is affected by transforms (shapes, groups, lights,cameras).
// We stop the search if we come to a transform node to the left of
// the pathTail. If we find a node that IS affected by transform,
// we will insert a transform node just before the path-tail. This is
// because the editor should not affect nodes that appear
// before attachPath in the scene graph.
// [3] The path-tail IS a group. We search the children from left to
// right for transform nodes.
// We stop the search if we come to a transform node.
// If we find a node that is affected by transform, we will insert a
// transform just before this node. This is because the editor for a
// group should affect ALL nodes within that group.
//
// NOTE: For the purposes of this routine, we consider SoSwitch as different
// from other types of group. This is because we don't want to put
// the new node underneath the switch, but next to it.
//
// Use: private
//
SoPath *
SoSceneViewer::findTransformForAttach(
const SoPath *target ) // path to start search from
//
////////////////////////////////////////////////////////////////////////
{
int pathLength;
SoPath *selectionPath;
SoTransform *editXform;
if ( ( selectionPath = (SoPath *) target ) == NULL ) {
//
// If no selection path is specified, then use the LAST path in the
// current selection list.
//
selectionPath = (*selection)[selection->getNumSelected() - 1];
}
pathLength = selectionPath->getLength();
if ( pathLength <= 0 ) {
fprintf( stderr, "No objects currently selected...\n" );
return NULL;
}
#ifdef DEBUG
if ( pathLength < 2 ) {
fprintf( stderr, "Picked object has no parent...\n" );
return NULL;
}
#endif
// find 'group' and try to find 'editXform'
SoGroup *group;
SoNode *node;
int index, i;
SbBool isTailGroup, isTailKit;
SbBool existedBefore = FALSE;
SoPath *pathToXform = NULL;
editXform = NULL;
isTailGroup =
( selectionPath->getTail()->isOfType(SoGroup::getClassTypeId() )
&& !selectionPath->getTail()->isOfType(SoSwitch::getClassTypeId()));
isTailKit = selectionPath->getTail()->isOfType(SoBaseKit::getClassTypeId());
// CASE 1: The path-tail is a node kit.
if ( isTailKit ) {
// Nodekits have their own built in policy for creating new transform
// nodes. Allow them to contruct and return a path to it.
SoBaseKit *kit = (SoBaseKit *)
((SoNodeKitPath *)selectionPath)->getTail();
// Before creating path, see if the transform part exists yet:
if (SO_CHECK_PART(kit, "transform", SoTransform) != NULL)
existedBefore = TRUE;
if ((editXform = SO_GET_PART(kit, "transform", SoTransform)) != NULL) {
pathToXform = kit->createPathToPart( "transform", TRUE, selectionPath );
pathToXform->ref();
}
else {
// This nodekit has no transform part.
// Treat the object as if it were not a nodekit.
isTailKit = FALSE;
}
}
if ( !isTailGroup && !isTailKit ) {
//
// CASE 2: The path-tail is not a group.
// 'group' becomes the second to last node in the path.
// We search the path tail and its siblings from right to left for a
// transform node.
// We stop the search if we come to a 'movable' node
// to the left of the pathTail. If we find a movable node, we
// will insert a transform just before the path-tail. This is
// because the manipulator should not affect objects that appear
// before selectionPath in the scene graph.
//
group = (SoGroup *) selectionPath->getNode(pathLength - 2);
index = group->findChild( selectionPath->getTail() );
for (i = index; (i >= 0) && (editXform == NULL); i--){
node = group->getChild(i);
if (node->isOfType(SoTransform::getClassTypeId())) // found an SoMaterial
editXform = (SoTransform *) node;
else if ( i != index ) {
if ( isAffectedByTransform( node ) )
break;
}
}
if ( editXform == NULL ) {
existedBefore = FALSE;
editXform = new SoTransform;
group->insertChild( editXform, index );
}
else
existedBefore = TRUE;
}
else if ( !isTailKit ) {
// CASE 3: The path-tail is a group.
// 'group' becomes the path tail
// We search the children from left to right for transform nodes.
// We stop the search if we come to a movable node.
// If we find a movable node, we will insert a transform just
// before this node. This is because the editor
// for a group should affect ALL objects within that group.
//
group = (SoGroup *) selectionPath->getTail();
for (i = 0; (i < group->getNumChildren()) && (editXform == NULL); i++ ) {
node = group->getChild(i);
if (node->isOfType(SoTransform::getClassTypeId()))
editXform = (SoTransform *) node;
else if ( isAffectedByTransform( node ) )
break;
}
if ( editXform == NULL ) {
existedBefore = FALSE;
editXform = new SoTransform;
group->insertChild( editXform, i );
}
else
existedBefore = TRUE;
}
// If we don't have a path yet (i.e., we weren't handed a nodekit path)
// create the 'pathToXform'
// by copying editPath and making the last node in the path be editXform
if ( pathToXform == NULL ) {
if ( !isTailGroup )
// CASE 2: path-tail was NOT 'group' -- copy all but last entry
pathToXform = selectionPath->copy(0, pathLength - 1);
else
// CASE 3: path-tail was 'group' -- copy all of editPath
pathToXform = selectionPath->copy(0, pathLength);
pathToXform->ref();
// add the transform to the end
int xfIndex = group->findChild(editXform);
pathToXform->append( xfIndex );
}
// Now. If we created the transform node right here, right now, then
// we will set the 'center' field based on the geometric center. We
// don't do this if we didn't create the transform, because "maybe it
// was that way for a reason."
if ( existedBefore == FALSE ) {
// First, find 'applyPath' by popping nodes off the path until you
// reach a separator. This path will contain all nodes affected by
// the transform at the end of 'pathToXform'
SoFullPath *applyPath = (SoFullPath *) pathToXform->copy();
applyPath->ref();
for (int i = (applyPath->getLength() - 1); i >0; i-- ) {
if (applyPath->getNode(i)->isOfType( SoSeparator::getClassTypeId()))
break;
applyPath->pop();
}
// Next, apply a bounding box action to applyPath, and reset the
// bounding box just before the tail of 'pathToXform' (which is just
// the editXform). This will assure that the only things included in
// the resulting bbox will be those affected by the editXform.
SoGetBoundingBoxAction bboxAction(currentViewer->getViewportRegion());
bboxAction.setResetPath(pathToXform,TRUE,SoGetBoundingBoxAction::BBOX );
bboxAction.apply(applyPath);
applyPath->unref();
// Get the center of the bbox in world space...
SbVec3f worldBoxCenter = bboxAction.getBoundingBox().getCenter();
// Convert it into local space of the transform...
SbVec3f localBoxCenter;
SoGetMatrixAction ma(currentViewer->getViewportRegion());
ma.apply( pathToXform );
ma.getInverse().multVecMatrix( worldBoxCenter, localBoxCenter );
// Finally, set the center value...
editXform->center.setValue( localBoxCenter );
}
pathToXform->unrefNoDelete();
return( pathToXform );
}
////////////////////////////////////////////////////////////////////////
//
// Description:
// Create a material editor for the currently selected object.
//
// Use: private
void
SoSceneViewer::createMaterialEditor()
//
////////////////////////////////////////////////////////////////////////
{
if (materialEditor == NULL)
materialEditor = new SoXtMaterialEditor;
materialEditor->show();
materialEditor->attach( findMaterialForAttach( NULL ) );
}
////////////////////////////////////////////////////////////////////////
//
// Description:
// Create a transform editor for the currently selected object
//
// Use: private
void
SoSceneViewer::createTransformSliderSet()
//
////////////////////////////////////////////////////////////////////////
{
SoPath *editTransformPath;
SoTransform *editTransform;
// get path to a transform to edit
if ( ( editTransformPath = findTransformForAttach( NULL )) == NULL )
return;
// the tail of the path is a transform for us!
editTransformPath->ref();
editTransform =(SoTransform *) ((SoFullPath *)editTransformPath)->getTail();
editTransformPath->unref();
// Nuke the old slider set and get a new one
if (transformSliderSet == NULL)
transformSliderSet = new SoXtTransformSliderSet();
transformSliderSet->setNode(editTransform);
transformSliderSet->show();
}
////////////////////////////////////////////////////////////////////////
//
// Description:
// Set fog on/off. Leave density alone - when default, the environment
// node will do something useful to make the fog look good.
//
// Use: private
void
SoSceneViewer::setFog(SbBool flag)
//
////////////////////////////////////////////////////////////////////////
{
fogFlag = flag;
if (fogFlag)
environment->fogType.setValue( SoEnvironment::HAZE ); // purple ?
else environment->fogType.setValue( SoEnvironment::NONE );
}
////////////////////////////////////////////////////////////////////////
//
// Description:
// Set AA-ing on/off.
//
// Use: private
void
SoSceneViewer::setAntialiasing(SbBool flag)
//
////////////////////////////////////////////////////////////////////////
{
antialiasingFlag = flag;
if (antialiasingFlag)
currentViewer->setAntialiasing( TRUE, 3 );
else
currentViewer->setAntialiasing( FALSE, 1 );
}
////////////////////////////////////////////////////////////////////////
//
// Description:
// Invokes color editor on ambient lighting color.
void
SoSceneViewer::editAmbientColor()
//
////////////////////////////////////////////////////////////////////////
{
if ( ambientColorEditor == NULL ) {
ambientColorEditor = new MyColorEditor;
ambientColorEditor->setTitle( "Ambient Lighting" );
ambientColorEditor->addColorChangedCallback(
SoSceneViewer::ambientColorCallback, this );
}
// Normalize ambient intensity
SbColor ambCol;
ambCol = environment->ambientColor.getValue();
ambCol *= environment->ambientIntensity.getValue();
environment->ambientIntensity.setValue( 1.0 );
environment->ambientColor.setValue( ambCol );
ignoreCallback = TRUE;
ambientColorEditor->setColor( environment->ambientColor.getValue() );
ignoreCallback = FALSE;
ambientColorEditor->show();
}
////////////////////////////////////////////////////////////////////////
//
// Description:
// Callback proc invoked by the color editor, this changes the scene's
// ambient lighting color.
//
// Use: static, private
//
void
SoSceneViewer::ambientColorCallback(void *userData, const SbColor *color)
//
////////////////////////////////////////////////////////////////////////
{
SoSceneViewer *sv = (SoSceneViewer *) userData;
if (sv->ignoreCallback)
return;
sv->environment->ambientColor.setValue( *color );
}
////////////////////////////////////////////////////////////////////////
//
// Description:
// Invokes color editor on background color.
void
SoSceneViewer::editBackgroundColor()
//
////////////////////////////////////////////////////////////////////////
{
if ( backgroundColorEditor == NULL ) {
backgroundColorEditor = new MyColorEditor;
backgroundColorEditor->setTitle( "Background Color" );
backgroundColorEditor->addColorChangedCallback(
SoSceneViewer::backgroundColorCallback, this );
}
ignoreCallback = TRUE;
backgroundColorEditor->setColor(getBackgroundColor());
ignoreCallback = FALSE;
backgroundColorEditor->show();
}
////////////////////////////////////////////////////////////////////////
//
// Description:
// Callback proc invoked by the color editor, this changes the current
// viewer's background color.
//
// Use: static, private
//
void
SoSceneViewer::backgroundColorCallback(void *userData, const SbColor *c)
//
////////////////////////////////////////////////////////////////////////
{
//??? should be using the Roxy color editor, not the So color editor
SoSceneViewer *sv = (SoSceneViewer *) userData;
if (sv->ignoreCallback)
return;
sv->currentViewer->setBackgroundColor( *c );
// keep fog color up to date with bkg color
sv->environment->fogColor.setValue( *c );
}
////////////////////////////////////////////////////////////////////////
//
// Description:
// This will:
// [a] find the last sceneKit camera that is being looked through
// in the scene and return a pointer to it.
//
// Use: private
SoCamera *
SoSceneViewer::getLastSceneKitCamera(SoGroup *root)
//
////////////////////////////////////////////////////////////////////////
{
// Find scene kits under the root node and loop backwards:
SoSearchAction sa;
sa.setType(SoSceneKit::getClassTypeId());
sa.setInterest(SoSearchAction::ALL);
sa.apply(root);
SoPathList paths = sa.getPaths();
for (int i = paths.getLength() - 1; i >= 0; i--) {
SoPath *p = paths[i];
if (p->getTail()->isOfType( SoSceneKit::getClassTypeId() ) ) {
SoSceneKit *sceneKit = (SoSceneKit *) p->getTail();
int camNum = sceneKit->getCameraNumber();
SoNodeKitListPart *camList =
(SoNodeKitListPart *) sceneKit->getPart("cameraList",FALSE);
if (camList && camNum >= 0) {
SoCameraKit *camKit
= (SoCameraKit *)camList->getChild( camNum );
if (camKit)
return( (SoCamera *) camKit->getPart( "camera", FALSE ));
}
}
}
return NULL;
}
////////////////////////////////////////////////////////////////////////
//
// Description:
// This will:
// [a] find the last sceneKit, its camera number, and replace the
// given camera for that node.
//
// Use: private
void
SoSceneViewer::setLastSceneKitCamera(SoGroup *root, SoCamera *theCam)
//
////////////////////////////////////////////////////////////////////////
{
// Find scene kits under the root node and loop backwards:
SoSearchAction sa;
sa.setType(SoSceneKit::getClassTypeId());
sa.setInterest(SoSearchAction::ALL);
sa.apply(root);
SoPathList paths = sa.getPaths();
for (int i = paths.getLength() - 1; i >= 0; i--) {
SoPath *p = paths[i];
if (p->getTail()->isOfType( SoSceneKit::getClassTypeId() ) ) {
SoSceneKit *sceneKit = (SoSceneKit *) p->getTail();
int camNum = sceneKit->getCameraNumber();
SoNodeKitListPart *camList =
(SoNodeKitListPart *) sceneKit->getPart("cameraList",FALSE);
if (camList && camNum >= 0) {
SoCameraKit *camKit
= (SoCameraKit *)camList->getChild( camNum );
if (camKit) {
camKit->setPart("camera",theCam);
return;
}
}
}
}
return;
}
////////////////////////////////////////////////////////////////////////
//
// Description:
// This will:
// [a] find scene kits if under the root node.
// [b] Save the camera number settings of the kits in a dictionary.
// [c] Switch off the scenekit cameras.
//
// Use: private
void
SoSceneViewer::switchOffSceneKitCameras(SoGroup *root)
//
////////////////////////////////////////////////////////////////////////
{
// [a] find scene kits if under the root node.
SoSearchAction sa;
sa.setType(SoSceneKit::getClassTypeId());
sa.setInterest(SoSearchAction::ALL);
sa.apply(root);
// Deal with each kit:
SoPathList paths = sa.getPaths();
for (int i = paths.getLength() - 1; i >= 0; i--) {
SoPath *p = paths[i];
if (p->getTail()->isOfType( SoSceneKit::getClassTypeId() ) ) {
SoSceneKit *sceneKit = (SoSceneKit *) p->getTail();
int *camNumPtr = new int;
*camNumPtr = sceneKit->getCameraNumber();
// [b] Save the camera number settings of the kits in a dictionary.
sceneKitCamNumDict->enter((unsigned long)sceneKit,
(void *)camNumPtr);
// [c] Switch off the scenekit cameras.
sceneKit->setCameraNumber( SO_SWITCH_NONE );
}
}
}
////////////////////////////////////////////////////////////////////////
//
// Description:
// This will:
// [a] find scene kits if under the root node.
// [b] Find the camera number settings of the kits from a dictionary.
// [c] Restore the sceneKit camera numbers.
//
// Use: private
void
SoSceneViewer::restoreSceneKitCameras(SoGroup *root)
//
////////////////////////////////////////////////////////////////////////
{
// [a] find scene kits if under the root node.
SoSearchAction sa;
sa.setType(SoSceneKit::getClassTypeId());
sa.setInterest(SoSearchAction::ALL);
sa.apply(root);
// Deal with each kit:
SoPathList paths = sa.getPaths();
for (int i = paths.getLength() - 1; i >= 0; i--) {
SoPath *p = paths[i];
if (p->getTail()->isOfType( SoSceneKit::getClassTypeId() ) ) {
SoSceneKit *sceneKit = (SoSceneKit *) p->getTail();
void *myPtr;
int camNum;
if (sceneKitCamNumDict->find((unsigned long)sceneKit, myPtr))
camNum = *((int *)myPtr);
else
camNum = SO_SWITCH_NONE;
sceneKit->setCameraNumber( camNum );
}
}
}
////////////////////////////////////////////////////////////////////////
//
// Description:
// Copies from given camera into this viewer's camera, if types match.
//
// Use: private
void
SoSceneViewer::setCameraFields( SoCamera *fromCam )
//
////////////////////////////////////////////////////////////////////////
{
SoCamera *myCam = getCamera();
if ( ! myCam || ! fromCam )
return;
// Types must match!
if ( myCam->getTypeId() != fromCam->getTypeId() )
return;
myCam->viewportMapping = fromCam->viewportMapping.getValue();
myCam->position = fromCam->position.getValue();
myCam->orientation = fromCam->orientation.getValue();
myCam->aspectRatio = fromCam->aspectRatio.getValue();
myCam->nearDistance = fromCam->nearDistance.getValue();
myCam->farDistance = fromCam->farDistance.getValue();
myCam->focalDistance = fromCam->focalDistance.getValue();
if ( myCam->isOfType( SoPerspectiveCamera::getClassTypeId() )) {
((SoPerspectiveCamera *)myCam)->heightAngle
= ((SoPerspectiveCamera *)fromCam)->heightAngle.getValue();
}
else if ( myCam->isOfType( SoOrthographicCamera::getClassTypeId() )) {
((SoOrthographicCamera *)myCam)->height
= ((SoOrthographicCamera *)fromCam)->height.getValue();
}
}
////////////////////////////////////////////////////////////////////////
//
// Description:
// This will remove any cameras under root.
//
// Use: private
void
SoSceneViewer::removeCameras(SoGroup *root)
//
////////////////////////////////////////////////////////////////////////
{
SoSearchAction sa;
sa.setType(SoCamera::getClassTypeId());
sa.setInterest(SoSearchAction::ALL);
sa.apply(root);
// remove those cameras!
SoPathList paths = sa.getPaths();
for (int i = 0; i < paths.getLength(); i++) {
SoPath *p = paths[i];
int cam = p->getIndexFromTail(0);
SoGroup *group = (SoGroup *) p->getNodeFromTail(1);
group->removeChild(cam);
// See if the parent of this camera is a switch node with whichChild set
// to render the camera. With the camera gone, the switch has nothing
// to render.
if (group->isOfType(SoSwitch::getClassTypeId())) {
SoSwitch *sw = (SoSwitch *) group;
if (sw->whichChild.getValue() == cam)
sw->whichChild.setValue(SO_SWITCH_NONE);
}
}
}
////////////////////////////////////////////////////////////////////////
//
// Description:
// Reads the given file and insert the geometry under the selection
// node. If the node didn't have any children, the viewAll() method is
// automatically called.
//
// Use: private
SbBool
SoSceneViewer::readFile(const char *filename)
//
////////////////////////////////////////////////////////////////////////
{
SbBool hadNoChildren = (selection->getNumChildren() == 0);
// Try reading the file
SbString errorMessage;
SoSeparator *sep = MyFileRead(filename, errorMessage);
// add nodes under selection, not sceneGraph
if (sep != NULL)
selection->addChild(sep);
// display error dialog if there were reading errors
else {
SoXt::createSimpleErrorDialog(mgrWidget, "File Error Dialog",
(char *) errorMessage.getString());
return FALSE;
}
// remove any cameras under selection which were just added
SoCamera *camFromScene = getLastSceneKitCamera(selection);
switchOffSceneKitCameras(selection);
removeCameras(selection);
if (hadNoChildren) {
viewAll();
saveHomePosition();
}
// If scene had sceneKit with a camera, copy its values into our camera.
if (camFromScene)
setCameraFields( camFromScene );
return TRUE;
}
////////////////////////////////////////////////////////////////////////
//
// Description:
// Read environment data. We expect the following nodes:
//
// Group {
// Label { "SoSceneViewer Environment v3.0" }
// Camera {}
// Environment {}
// LightGroup {
// Switch { DirectionalLight } # 1
// ...
// Switch { DirectionalLight } # 6
// }
// DirectionalLight {} # optional headlight
// }
//
// Use: private
SbBool
SoSceneViewer::readEnvFile(const char *filename)
//
////////////////////////////////////////////////////////////////////////
{
SoInput in;
if (! in.openFile(filename)) {
// display an error dialog
char str[100];
strcpy(str, "Error opening file: ");
strcat(str, filename);
SoXt::createSimpleErrorDialog(mgrWidget, "File Error Dialog", str);
return FALSE;
}
SoNode *n;
SoLabel *l = NULL;
SbBool isValid = FALSE;
SbBool ok;
if ((ok = SoDB::read(&in, n)) && n != NULL) {
// we expect a label first
n->ref();
if (n->isOfType(SoLabel::getClassTypeId())) {
l = (SoLabel *) n;
isValid = (strcmp(l->label.getValue().getString(),
SV_ENV_LABEL) == 0);
}
n->unref();
}
else if (!ok) {
// display error dialog if there were reading errors
char str[100];
strcpy(str, "Error reading file: ");
strcat(str, filename);
SoXt::createSimpleErrorDialog(mgrWidget, "File Error Dialog", str);
return FALSE;
}
// if ok, read the rest.
if (isValid) {
// Camera
if (SoDB::read(&in, n) != FALSE && (n != NULL)) {
n->ref();
if (n->isOfType(SoCamera::getClassTypeId())) {
// replace the old camera with the new camera and
// re-attach the viewer.
SoCamera *newCamera = (SoCamera *) n;
SoCamera *oldCamera = getCamera();
SoSearchAction sa;
sa.setNode(oldCamera);
sa.apply(sceneGraph);
SoFullPath *fullCamPath = (SoFullPath *) sa.getPath();
if (fullCamPath) {
SoGroup *parent =
(SoGroup *)fullCamPath->getNode(fullCamPath->getLength() - 2);
parent->insertChild(newCamera, parent->findChild(oldCamera));
setCamera(newCamera);
if (parent->findChild(oldCamera) >= 0)
parent->removeChild(oldCamera);
}
#if DEBUG
else
SoDebugError::post("SoSceneViewer::readEnvFile",
"cannot find camera in graph");
#endif
}
n->unref();
}
// Environment
if (SoDB::read(&in, n) != FALSE && (n != NULL)) {
n->ref();
if (n->isOfType(SoEnvironment::getClassTypeId())) {
lightsCameraEnvironment->replaceChild(environment, n);
environment = (SoEnvironment *) n;
}
n->unref();
}
// Light group
if (SoDB::read(&in, n) != FALSE && (n != NULL)) {
n->ref();
if (n->isOfType(SoGroup::getClassTypeId())) {
// remove all of the existing lights
for (int i = lightDataList.getLength(); i > 0; i--)
removeLight( (SvLightData *) lightDataList[i-1] );
lightsCameraEnvironment->replaceChild(lightGroup, n);
lightGroup = (SoGroup *) n;
// This was busted. It was looking for a light as child 0,
// but the scale and scaleInverse made it think no light was
// there. So now, we do this right...
// We'll just check for the light as any old child.
// This way it's okay to add a translation node under that
// switch too, so we can translate the manips as well.
// This allows as to place the directional light manips.
for (i=0; i < lightGroup->getNumChildren(); i++) {
SoNode *node = lightGroup->getChild(i);
if (node->isOfType(SoSwitch::getClassTypeId())) {
SoSwitch *sw = (SoSwitch *) node;
SbBool addedIt = FALSE;
for (int j = 0;
addedIt == FALSE && j < sw->getNumChildren();
j++ ) {
node = sw->getChild(j);
if (node->isOfType(SoLight::getClassTypeId())) {
addLightEntry((SoLight *)node, sw);
addedIt = TRUE;
}
}
}
}
}
n->unref();
}
// Headlight (optional) - if not there, turn headlight off
if (SoDB::read(&in, n) != FALSE && (n != NULL)) {
n->ref();
if (n->isOfType(SoDirectionalLight::getClassTypeId())) {
SoDirectionalLight *headlight = getHeadlight();
SoDirectionalLight *newLight = (SoDirectionalLight *) n;
if (headlight != NULL) {
headlight->intensity.setValue(newLight->intensity.getValue());
headlight->color.setValue(newLight->color.getValue());
headlight->direction.setValue(newLight->direction.getValue());
setHeadlight(TRUE);
}
}
n->unref();
}
else setHeadlight(FALSE);
}
else {
fprintf(stderr, "Sorry, file is not formatted correctly\n");
}
return TRUE;
}
////////////////////////////////////////////////////////////////////////
//
// Description:
// This routine is called to get a file name using the
// standard file dialog.
//
// Use: private
void
SoSceneViewer::getFileName()
//
////////////////////////////////////////////////////////////////////////
{
// use a motif file selection dialog
if (fileDialog == NULL) {
Arg args[5];
int n = 0;
// unmanage when ok/cancel are pressed
XtSetArg(args[n], XmNautoUnmanage, TRUE); n++;
fileDialog = XmCreateFileSelectionDialog(
XtParent(mgrWidget), "File Dialog", args, n);
XtAddCallback(fileDialog, XmNokCallback,
(XtCallbackProc)SoSceneViewer::fileDialogCB,
(XtPointer)this);
}
// manage the dialog
XtManageChild(fileDialog);
}
////////////////////////////////////////////////////////////////////////
//
// Description:
// Motif file dialog callback.
//
void
SoSceneViewer::fileDialogCB(Widget, SoSceneViewer *sv,
XmFileSelectionBoxCallbackStruct *data)
//
////////////////////////////////////////////////////////////////////////
{
// Get the file name
char *filename;
XmStringGetLtoR(data->value,
(XmStringCharSet) XmSTRING_DEFAULT_CHARSET, &filename);
// Use that file
sv->doFileIO(filename);
XtFree(filename);
}
////////////////////////////////////////////////////////////////////////
//
// Description:
// detach everything and nuke the existing scene.
//
// Use: private
void
SoSceneViewer::deleteScene()
//
////////////////////////////////////////////////////////////////////////
{
// deselect everything (also detach manips)
selection->deselectAll();
// remove the geometry under the selection node
for (int i = selection->getNumChildren(); i>0; i--)
selection->removeChild(i-1);
}
////////////////////////////////////////////////////////////////////////
//
// Description:
// Read/Write to the given file name, given the current file mode.
//
// Use: private
SbBool
SoSceneViewer::doFileIO(const char *file)
//
////////////////////////////////////////////////////////////////////////
{
SbBool okFile = TRUE;
switch (fileMode) {
case SV_FILE_OPEN:
deleteScene();
okFile = readFile(file);
// If we've already made lights, re-calculate size for light
// manips based on size of new scene.
if (calculatedLightManipSize)
calculateLightManipSize();
break;
case SV_FILE_IMPORT:
okFile = readFile(file);
// If we've already made lights, re-calculate size for light
// manips based on size of new scene.
if (calculatedLightManipSize)
calculateLightManipSize();
break;
case SV_FILE_SAVE_AS:
okFile = writeFile(file);
break;
case SV_FILE_READ_ENV:
readEnvFile(file);
break;
case SV_FILE_SAVE_ENV:
{
// Run through the lights. If any light is a directionalLightManip,
// transfer its translation into the SvLightData, since that
// info will not write out.
for (int i=0; i < lightDataList.getLength(); i++)
transferDirectionalLightLocation((SvLightData *) lightDataList[i]);
writeEnvFile(file);
}
break;
default:
fprintf(stderr, "Wrong file mode %d passed!\n", fileMode);
return FALSE;
}
// save the new file name so we can simply use "Save" instead of
// "Save As" next time around.
if (fileMode == SV_FILE_OPEN || fileMode == SV_FILE_SAVE_AS) {
// save the current file name
delete fileName;
if (okFile && file != NULL)
fileName = strdup(file);
else
fileName = NULL;
}
// enable/disable cmd key shortcuts and menu items
updateCommandAvailability();
return okFile;
}
////////////////////////////////////////////////////////////////////////
//
// Description:
// Saves the scene to the current file.
//
// Use: private
void
SoSceneViewer::save()
//
////////////////////////////////////////////////////////////////////////
{
if (fileName != NULL) {
SbBool ok = writeFile(fileName);
if (!ok) {
delete fileName;
fileName = NULL;
}
}
else {
fileMode = SV_FILE_SAVE_AS;
getFileName();
}
}
////////////////////////////////////////////////////////////////////////
//
// Description:
// Removes the attached light manips geometry from the scene. This
// is used for file writting,...
//
// Use: private
void
SoSceneViewer::removeAttachedLightManipGeometry()
//
////////////////////////////////////////////////////////////////////////
{
for (int i = 0; i < lightDataList.getLength(); i++ ) {
SvLightData *data = (SvLightData *) lightDataList[i];
// We'll be putting everything back later, so make a note of this...
data->shouldBeManip = data->isManip();
if ( data->isManip() == TRUE )
editLight(data, FALSE);
}
}
////////////////////////////////////////////////////////////////////////
//
// Description:
// Add the attached light manips geometry back into the scene. This
// is called after the geometry has been temporaly revomed (used for file
// writting).
//
// Use: private
void
SoSceneViewer::addAttachedLightManipGeometry()
//
////////////////////////////////////////////////////////////////////////
{
for (int i = 0; i < lightDataList.getLength(); i++ ) {
SvLightData *data = (SvLightData *) lightDataList[i];
if ( data->isManip() != data->shouldBeManip )
editLight(data, data->shouldBeManip);
}
}
////////////////////////////////////////////////////////////////////////
//
// Description:
// Write the nodes under the selection node to the given file name.
//
// Use: private
SbBool
SoSceneViewer::writeFile(const char *filename)
//
////////////////////////////////////////////////////////////////////////
{
SoWriteAction wa;
if (! wa.getOutput()->openFile(filename)) {
// display an error dialog
char str[100];
strcpy(str, "Error creating file: ");
strcat(str, filename);
SoXt::createSimpleErrorDialog(mgrWidget, "File Error Dialog", str);
return FALSE;
}
// temporarily replace all manips with regular transform nodes.
removeManips();
// restore the cameraNum settings of any scenekits.
restoreSceneKitCameras(selection);
// Copy our camera into the last sceneKit.
setLastSceneKitCamera(selection, (SoCamera *)getCamera()->copy());
// write out all the children of the selection node
for (int i = 0; i < selection->getNumChildren(); i++)
wa.apply(selection->getChild(i));
wa.getOutput()->closeFile();
// Switch the sceneKit cameras back off:
switchOffSceneKitCameras(selection);
// Now put the manips back in the scene graph.
restoreManips();
return TRUE;
}
////////////////////////////////////////////////////////////////////////
//
// Description:
// Write the Enviroment nodes (camera and lights) to the given
// file name.
//
// Use: private
SbBool
SoSceneViewer::writeEnvFile(const char *filename)
//
////////////////////////////////////////////////////////////////////////
{
SoWriteAction wa;
if (! wa.getOutput()->openFile(filename)) {
// display an error dialog
char str[100];
strcpy(str, "Error creating file: ");
strcat(str, filename);
SoXt::createSimpleErrorDialog(mgrWidget, "File Error Dialog", str);
return FALSE;
}
// write out the environment including the headlight
wa.apply(envLabel);
wa.apply(getCamera());
wa.apply(environment);
wa.apply(lightGroup);
if (isHeadlight())
wa.apply(getHeadlight());
wa.getOutput()->closeFile();
return TRUE;
}
////////////////////////////////////////////////////////////////////////
//
// Description:
// Print the scene using a custom print dialog.
//
// Use: private
void
SoSceneViewer::print()
//
////////////////////////////////////////////////////////////////////////
{
if (printDialog == NULL) {
printDialog = new SoXtPrintDialog;
printDialog->setTitle("SceneViewer Printing");
printDialog->setBeforePrintCallback(
SoSceneViewer::beforePrintCallback, (void *) this);
printDialog->setAfterPrintCallback(
SoSceneViewer::afterPrintCallback, (void *) this);
}
//
// Send the render area size and scene graph to the print dialog
//
Widget widget = getRenderAreaWidget();
if (widget != NULL) {
Arg args[2];
int n = 0;
SbVec2s sz;
XtSetArg(args[n], XtNwidth, &sz[0]); n++;
XtSetArg(args[n], XtNheight, &sz[1]); n++;
XtGetValues(widget, args, n);
printDialog->setPrintSize(sz);
}
printDialog->show();
}
////////////////////////////////////////////////////////////////////////
//
// Description:
// Temporarily remove manips from the scene.
// Restore them with a call to restoreManips().
//
// Use: private
void
SoSceneViewer::removeManips()
//
////////////////////////////////////////////////////////////////////////
{
// temporarily replace all manips with regular transform nodes.
for (int m = 0; m < maniplist->getLength(); m++ ) {
SoTransformManip *manip = maniplist->getManip(m);
SoPath *xfPath = maniplist->getXfPath(m);
manip->replaceManip(xfPath, NULL);
}
}
////////////////////////////////////////////////////////////////////////
//
// Description:
// Restore manips that were removed with removeManips().
//
// Use: private
void
SoSceneViewer::restoreManips()
//
////////////////////////////////////////////////////////////////////////
{
// Now put the manips back in the scene graph.
for (int m = 0; m < maniplist->getLength(); m++ ) {
SoTransformManip *manip = maniplist->getManip(m);
SoPath *xfPath = maniplist->getXfPath(m);
manip->replaceNode(xfPath);
}
}
////////////////////////////////////////////////////////////////////////
//
// Description:
// Temporarily remove manips from the scene. They
// will all be restored after the printing is done.
//
// Use: private, static
void
SoSceneViewer::beforePrintCallback(void *uData, SoXtPrintDialog *)
//
////////////////////////////////////////////////////////////////////////
{
SoSceneViewer *sv = (SoSceneViewer *)uData;
// temporarily replace all manips with regular transforms.
sv->removeManips();
// Do the same for all the light manips
sv->removeAttachedLightManipGeometry();
// if the current viewer is the examiner viewer, turn the
// feedback axis off while we print
if (sv->whichViewer == SV_VWR_EXAMINER) {
SoXtExaminerViewer *exam = (SoXtExaminerViewer *) sv->currentViewer;
sv->feedbackShown = exam->isFeedbackVisible();
exam->setFeedbackVisibility(FALSE);
}
// set the scene to print
sv->printDialog->setSceneGraph(sv->sceneGraph);
}
////////////////////////////////////////////////////////////////////////
//
// Description:
// Called after printing is done. Add the manips back into the
// scene.
//
// Use: private, static
void
SoSceneViewer::afterPrintCallback(void *uData, SoXtPrintDialog *)
//
////////////////////////////////////////////////////////////////////////
{
SoSceneViewer *sv = (SoSceneViewer *)uData;
// put the manips back in the scene graph.
sv->restoreManips();
// put the light manips back in the scene graph.
sv->addAttachedLightManipGeometry();
// restor the examiner feedback
if (sv->whichViewer == SV_VWR_EXAMINER) {
SoXtExaminerViewer *exam = (SoXtExaminerViewer *) sv->currentViewer;
exam->setFeedbackVisibility( sv->feedbackShown );
}
}
////////////////////////////////////////////////////////////////////////
//
// Description:
// Static routine for processing topbar menu events.
// When the menu is created, it stores pointer to the SoSceneViewer
// in the client_data, so that we can tell which SoSceneViewer needs
// the event.
//
// Use: private, static
//
void
SoSceneViewer::processTopbarEvent(
Widget, // Which widget? I don't care
SoSceneViewerData *data, // Pointer to button/SoSceneViewer
XmAnyCallbackStruct *cb ) // X garbage
//
////////////////////////////////////////////////////////////////////////
{
SoSceneViewer *sv = data->classPt;
Time eventTime = cb->event->xbutton.time;
switch (data->id) {
//
// File
//
case SV_FILE_ABOUT:
sv->showAboutDialog();
break;
case SV_FILE_NEW:
sv->deleteScene();
delete sv->fileName;
sv->fileName = NULL;
break;
case SV_FILE_OPEN:
case SV_FILE_IMPORT:
case SV_FILE_SAVE_AS:
case SV_FILE_READ_ENV:
case SV_FILE_SAVE_ENV:
sv->fileMode = data->id;
sv->getFileName();
break;
case SV_FILE_SAVE:
sv->save();
break;
case SV_FILE_PRINT:
sv->print();
break;
case SV_FILE_QUIT:
delete sv;
exit(0);
break;
//
// Edit
//
case SV_EDIT_PICK_PARENT:
sv->pickParent();
break;
case SV_EDIT_PICK_ALL:
sv->pickAll();
break;
case SV_EDIT_CUT:
// Remove manipulators before cutting the selection.
sv->detachManipFromAll();
sv->clipboard->copy((SoPathList *)sv->selection->getList(), eventTime);
sv->destroySelectedObjects();
sv->updateCommandAvailability();
break;
case SV_EDIT_COPY:
// Remove manipulators while copying the selection.
sv->removeManips();
sv->clipboard->copy((SoPathList *)sv->selection->getList(), eventTime);
sv->restoreManips();
break;
case SV_EDIT_PASTE:
sv->clipboard->paste(eventTime, pasteDoneCB, sv);
break;
case SV_EDIT_DELETE:
sv->destroySelectedObjects();
sv->updateCommandAvailability();
break;
//
// Viewing
//
case SV_VIEW_PICK:
sv->setViewing(! sv->isViewing());
break;
#ifdef EXPLORER
case SV_VIEW_USER:
sv->userModeFlag = !sv->userModeFlag;
if (sv->userModeFlag)
sv->currentViewer->setEventCallback(sv->userModeCB, sv->userModedata);
else
sv->currentViewer->setEventCallback(NULL, NULL);
break;
#endif
case SV_VIEW_EXAMINER:
sv->switchToViewer(SV_VWR_EXAMINER);
break;
case SV_VIEW_WALK:
sv->switchToViewer(SV_VWR_WALK);
break;
case SV_VIEW_PLANE:
sv->switchToViewer(SV_VWR_PLANE);
break;
case SV_VIEW_FLY:
sv->switchToViewer(SV_VWR_FLY);
break;
case SV_VIEW_SELECTION:
sv->viewSelection();
break;
case SV_VIEW_SCREEN_TRANSPARENCY:
sv->setTransparencyType(SoGLRenderAction::SCREEN_DOOR);
break;
case SV_VIEW_BLEND_TRANSPARENCY:
sv->setTransparencyType(SoGLRenderAction::BLEND);
break;
case SV_VIEW_DELAY_BLEND_TRANSPARENCY:
sv->setTransparencyType(SoGLRenderAction::DELAYED_BLEND);
break;
case SV_VIEW_SORT_BLEND_TRANSPARENCY:
sv->setTransparencyType(SoGLRenderAction::SORTED_OBJECT_BLEND);
break;
case SV_VIEW_FOG:
sv->setFog(! sv->fogFlag);
break;
case SV_VIEW_ANTIALIASING:
sv->setAntialiasing(! sv->antialiasingFlag);
break;
case SV_VIEW_BKG_COLOR:
sv->editBackgroundColor();
break;
//
// Editors
//
case SV_EDITOR_MATERIAL:
sv->createMaterialEditor();
break;
case SV_EDITOR_TRANSFORM:
sv->createTransformSliderSet();
break;
case SV_EDITOR_COLOR:
sv->createColorEditor();
break;
//
// Selection
//
case SV_SEL_SINGLE_SELECT:
sv->selection->policy.setValue(SoSelection::SINGLE);
break;
case SV_SEL_TOGGLE_SELECT:
sv->selection->policy.setValue(SoSelection::TOGGLE);
break;
case SV_SEL_SHIFT_SELECT:
sv->selection->policy.setValue(SoSelection::SHIFT);
break;
//
// Manips
//
case SV_MANIP_TRANSFORMER:
sv->highlightRA->setVisible(FALSE); // highlight visible when no manip
sv->curManip = (sv->curManip == SV_TRANSFORMER) ? SV_NONE : SV_TRANSFORMER;
if ( sv->curManipReplaces )
sv->replaceAllManips( sv->curManip );
break;
case SV_MANIP_TRACKBALL:
sv->highlightRA->setVisible(FALSE); // highlight visible when no manip
sv->curManip = (sv->curManip == SV_TRACKBALL) ? SV_NONE : SV_TRACKBALL;
if ( sv->curManipReplaces )
sv->replaceAllManips( sv->curManip );
break;
case SV_MANIP_HANDLEBOX:
sv->highlightRA->setVisible(FALSE); // highlight visible when no manip
sv->curManip = (sv->curManip == SV_HANDLEBOX) ? SV_NONE : SV_HANDLEBOX;
if ( sv->curManipReplaces )
sv->replaceAllManips( sv->curManip );
break;
case SV_MANIP_JACK:
sv->highlightRA->setVisible(FALSE); // highlight visible when no manip
sv->curManip = (sv->curManip == SV_JACK) ? SV_NONE : SV_JACK;
if ( sv->curManipReplaces )
sv->replaceAllManips( sv->curManip );
break;
case SV_MANIP_CENTERBALL:
sv->highlightRA->setVisible(FALSE); // highlight visible when no manip
sv->curManip =(sv->curManip == SV_CENTERBALL) ? SV_NONE : SV_CENTERBALL;
if ( sv->curManipReplaces )
sv->replaceAllManips( sv->curManip );
break;
case SV_MANIP_XFBOX:
sv->highlightRA->setVisible(FALSE); // highlight visible when no manip
sv->curManip = (sv->curManip == SV_XFBOX) ? SV_NONE : SV_XFBOX;
if ( sv->curManipReplaces )
sv->replaceAllManips( sv->curManip );
break;
case SV_MANIP_TABBOX:
sv->highlightRA->setVisible(FALSE); // highlight visible when no manip
sv->curManip = (sv->curManip == SV_TABBOX) ? SV_NONE : SV_TABBOX;
if ( sv->curManipReplaces )
sv->replaceAllManips( sv->curManip );
break;
case SV_MANIP_NONE:
sv->highlightRA->setVisible(TRUE); // highlight visible when no manip
sv->curManip = SV_NONE;
if ( sv->curManipReplaces )
sv->detachManipFromAll();
break;
case SV_MANIP_REPLACE_ALL:
// Toggle the value of 'curManipReplaces'
sv->curManipReplaces = ( sv->curManipReplaces == TRUE) ? FALSE : TRUE;
if ( sv->curManipReplaces )
sv->replaceAllManips( sv->curManip );
break;
//
// Lights
//
case SV_LIGHT_AMBIENT_EDIT: sv->editAmbientColor(); break;
case SV_LIGHT_ADD_DIRECT: sv->addLight(new SoDirectionalLightManip); break;
case SV_LIGHT_ADD_POINT: sv->addLight(new SoPointLightManip); break;
case SV_LIGHT_ADD_SPOT:
{
// Set the dropOffRate to be non-zero, or it will always work
// like a point light.
SoSpotLightManip *newSpotManip = new SoSpotLightManip;
newSpotManip->dropOffRate = .01;
sv->addLight(newSpotManip);
}
break;
case SV_LIGHT_TURN_ON:
case SV_LIGHT_TURN_OFF:
{
SbBool onFlag = (data->id == SV_LIGHT_TURN_ON);
for (int i=0; i < sv->lightDataList.getLength(); i++)
sv->turnLightOnOff((SvLightData *) sv->lightDataList[i], onFlag);
sv->turnLightOnOff( sv->headlightData, onFlag);
}
break;
case SV_LIGHT_SHOW_ALL:
case SV_LIGHT_HIDE_ALL:
{
SbBool onFlag = (data->id == SV_LIGHT_SHOW_ALL);
for (int i=0; i < sv->lightDataList.getLength(); i++)
sv->editLight((SvLightData *) sv->lightDataList[i], onFlag);
}
break;
} // endswitch( topbar button )
}
////////////////////////////////////////////////////////////////////////
//
// Description:
// Adds the given light to the scene and to the menu.
//
// Use: private
//
void
SoSceneViewer::addLight(SoLight *light)
//
////////////////////////////////////////////////////////////////////////
{
// Calculate the light manip size if necessary.
// Do this before adding the light into the scene,
// since if the light is a manip, its default size might influence the
// scene size.
if (!calculatedLightManipSize)
calculateLightManipSize();
// create the switch and light node and add it to the scene
SoSwitch *lightSwitch = new SoSwitch;
lightGroup->addChild(lightSwitch);
lightSwitch->addChild(light);
SWITCH_LIGHT_ON(lightSwitch);
// add the light entry for the new light
SvLightData *data = addLightEntry(light, lightSwitch);
//
// Try to come up with some meaningfull default position base
// of the current camera view volume.
//
SoCamera *vwrCamera = getCamera(); // don't cache this in the class
SbViewVolume vv = vwrCamera->getViewVolume(0.0);
SbVec3f forward = - vv.zVector();
SbVec3f center = vwrCamera->position.getValue() + forward *
(vwrCamera->nearDistance.getValue() + vwrCamera->farDistance.getValue()) / 2.0;
SbVec3f position( vv.ulf + forward * vv.nearToFar * .25 );
//XXX ??? XXX
//XXX this algorithm should be replaced. Perhaps instead of using
//XXX 'forward' we could go a little up and to the left?
//XXX ??? XXX
if (data->type.isDerivedFrom(SoDirectionalLight::getClassTypeId())) {
SoDirectionalLight *myLight = (SoDirectionalLight *) data->light;
// the position of the light can't be given to the light itself.
// So we use the translation and translation inverse to
// get it to go where we want.
data->translation->translation = position;
data->translationInverse->translation = -position;
myLight->direction = center - position;
}
else {
// The data->scale will influence the position we set.
// So we need to prepare for this. Note, it's not a prolem for
// directional lights since they use the translation node,
// which is outside the scale and scaleInverse grouping
SbVec3f invrs = data->scaleInverse->scaleFactor.getValue();
SbVec3f scaledLoc = position;
scaledLoc *= invrs[0];
if (data->type.isDerivedFrom(SoPointLight::getClassTypeId())) {
SoPointLight *myLight = (SoPointLight *) data->light;
myLight->location = scaledLoc;
// no direction for this light
}
else if (data->type.isDerivedFrom(SoSpotLight::getClassTypeId())) {
SoSpotLight *myLight = (SoSpotLight *) data->light;
myLight->location = scaledLoc;
myLight->direction = center - position;
}
}
}
////////////////////////////////////////////////////////////////////////
//
// Description:
// Creates and append the light data struct, and adds a menu entry
// for the light.
//
// Use: private
//
SvLightData *
SoSceneViewer::addLightEntry(SoLight *light, SoSwitch *lightSwitch)
//
////////////////////////////////////////////////////////////////////////
{
//
// create the light data
//
SvLightData *data = new SvLightData;
lightDataList.append(data);
light->ref();
data->light = light;
data->lightSwitch = lightSwitch;
// Try and find the scale, scaleInverse, translation, and
// translationInverse.
data->scale = NULL;
data->scaleInverse = NULL;
data->translation = NULL;
data->translationInverse = NULL;
SbBool gotLight = FALSE;
for ( int i = 0; i < lightSwitch->getNumChildren(); i++ ) {
SoNode *n = lightSwitch->getChild(i);
if (n == light)
gotLight = TRUE;
else if (n->isOfType(SoScale::getClassTypeId())){
if (data->scale == NULL && gotLight == FALSE)
data->scale = (SoScale *) n;
else if (data->scaleInverse == NULL && gotLight == TRUE)
data->scaleInverse = (SoScale *) n;
}
else if (n->isOfType(SoTranslation::getClassTypeId())){
if (data->translation == NULL && gotLight == FALSE)
data->translation = (SoTranslation *) n;
else if (data->translationInverse == NULL && gotLight == TRUE)
data->translationInverse = (SoTranslation *) n;
}
}
// Now install any missing nodes...
if (data->scale == NULL) {
data->scale = new SoScale;
int lightInd = lightSwitch->findChild(light);
lightSwitch->insertChild( data->scale, lightInd );
}
if (data->scaleInverse == NULL) {
data->scaleInverse = new SoScale;
int lightInd = lightSwitch->findChild(light);
lightSwitch->insertChild( data->scaleInverse, lightInd + 1 );
}
if (data->translation == NULL) {
data->translation = new SoTranslation;
int scaleInd = lightSwitch->findChild(data->scale);
lightSwitch->insertChild( data->translation, scaleInd );
}
if (data->translationInverse == NULL) {
data->translationInverse = new SoTranslation;
int scaleInvInd = lightSwitch->findChild(data->scaleInverse);
lightSwitch->insertChild( data->translationInverse, scaleInvInd+1 );
}
// See if the size was already calculated (this happens when we read
// .env files)...
SbVec3f oldScale = data->scale->scaleFactor.getValue();
if ( calculatedLightManipSize == FALSE
&& oldScale != SbVec3f(1,1,1) ) {
lightManipSize = oldScale[0];
calculatedLightManipSize = TRUE;
}
data->classPt = this;
data->colorEditor = NULL;
data->type = light->getTypeId();
// set the correct label name
char *str;
if (data->type.isDerivedFrom( SoDirectionalLight::getClassTypeId()))
str = Light.directionallight;
else if (data->type.isDerivedFrom( SoPointLight::getClassTypeId()) )
str = Light.pointlight;
else if (data->type.isDerivedFrom( SoSpotLight::getClassTypeId()) )
str = Light.spotlight;
else str = "??? ";
data->name = strdup(str);
// Set the size for the light manips.
if ( !calculatedLightManipSize )
calculateLightManipSize();
data->scale->scaleFactor.setValue( lightManipSize, lightManipSize,
lightManipSize );
float invSz = (lightManipSize == 0.0) ? 1.0 : 1.0 / lightManipSize;
data->scaleInverse->scaleFactor.setValue( invSz, invSz, invSz );
//
// add the menu entry
//
addLightMenuEntry(data);
return data;
}
////////////////////////////////////////////////////////////////////////
//
// Description:
// build the light menu entry for the given light.
//
// Use: private
//
void
SoSceneViewer::addLightMenuEntry(SvLightData *data)
//
////////////////////////////////////////////////////////////////////////
{
//
// create the motif menu entry
//
Widget menu = menuItems[SV_LIGHT].widget;
// makes sure menu has been built
if (menu == NULL)
return;
// create the submenu widget, adding a callback to update the toggles
Arg args[8];
int argnum = 0;
#ifdef MENUS_IN_POPUP
SoXt::getPopupArgs(XtDisplay(menu), SCREEN(menu), args, &argnum);
#endif
data->submenuWidget = XmCreatePulldownMenu(menu, NULL, args, argnum);
XtAddCallback(data->submenuWidget, XmNmapCallback,
(XtCallbackProc) SoSceneViewer::lightSubmenuDisplay,
(XtPointer) data);
// create a cascade menu entry which will bring the submenu
XtSetArg(args[0], XmNsubMenuId, data->submenuWidget);
data->cascadeWidget = XtCreateWidget(data->name,
xmCascadeButtonGadgetClass, menu, args, 1);
// add "on/off" toggle
data->onOffWidget = XtCreateWidget("On/Off", xmToggleButtonGadgetClass,
data->submenuWidget, NULL, 0);
XtAddCallback(data->onOffWidget, XmNvalueChangedCallback,
(XtCallbackProc) SoSceneViewer::lightToggleCB, (XtPointer) data);
// add "Icon" toggle
data->iconWidget = XtCreateWidget("Icon", xmToggleButtonGadgetClass,
data->submenuWidget, NULL, 0);
XtAddCallback(data->iconWidget, XmNvalueChangedCallback,
(XtCallbackProc) SoSceneViewer::editLightToggleCB, (XtPointer) data);
// add "Edit Color" toggle
data->editColorWidget = XtCreateWidget("Edit Color", xmPushButtonGadgetClass,
data->submenuWidget, NULL, 0);
XtAddCallback(data->editColorWidget, XmNactivateCallback,
(XtCallbackProc) SoSceneViewer::editLightColorCB, (XtPointer) data);
// add "Remove" entry
data->removeWidget = XtCreateWidget("Remove", xmPushButtonGadgetClass,
data->submenuWidget, NULL, 0);
XtAddCallback(data->removeWidget, XmNactivateCallback,
(XtCallbackProc) SoSceneViewer::removeLightCB, (XtPointer) data);
// manage children
XtManageChild(data->onOffWidget);
XtManageChild(data->iconWidget);
XtManageChild(data->editColorWidget);
XtManageChild(data->removeWidget);
XtManageChild(data->cascadeWidget);
}
////////////////////////////////////////////////////////////////////////
//
// Description:
// Called by "On/Off" light menu entry when toggle changes.
//
// Use: static private
//
void
SoSceneViewer::lightToggleCB(Widget toggle, SvLightData *data, void *)
//
////////////////////////////////////////////////////////////////////////
{
data->classPt->turnLightOnOff(data, XmToggleButtonGetState(toggle));
}
////////////////////////////////////////////////////////////////////////
//
// Description:
// Turn the given light on or off.
//
// Use: private
//
void
SoSceneViewer::turnLightOnOff(SvLightData *data, SbBool flag)
//
////////////////////////////////////////////////////////////////////////
{
// check if it is the headlight
if (data == headlightData)
setHeadlight( flag );
else {
if ( flag )
SWITCH_LIGHT_ON(data->lightSwitch);
else
SWITCH_LIGHT_OFF(data->lightSwitch);
}
}
////////////////////////////////////////////////////////////////////////
//
// Description:
// "Edit" light menu entry callback.
//
// Use: static private
//
void
SoSceneViewer::editLightToggleCB(Widget toggle, SvLightData *data, void *)
//
////////////////////////////////////////////////////////////////////////
{
data->classPt->editLight( data, XmToggleButtonGetState(toggle) );
}
////////////////////////////////////////////////////////////////////////
//
// Description:
// Attach/detach the correct manipulator on the given light.
//
// Use: private
//
void
SoSceneViewer::editLight(SvLightData *data, SbBool flag)
//
////////////////////////////////////////////////////////////////////////
{
// ??? check if this is for the headlight, which is special cased
// ??? since a manipulator cannot be used (aligned to camera).
SbBool forHeadlight = (data == data->classPt->headlightData);
SoType dataType = data->type;
SoType dirLightType = SoDirectionalLight::getClassTypeId();
SoType ptLightType = SoPointLight::getClassTypeId();
SoType spotLightType = SoSpotLight::getClassTypeId();
//
// attach the manip to the light and add it to the scene
//
if (flag) {
if (forHeadlight) {
if (headlightEditor == NULL) {
headlightEditor = new SoXtDirectionalLightEditor;
headlightEditor->setTitle("Headlight Editor");
}
// Make sure we have the current viewer's headlight
SoLight *l = data->classPt->getHeadlight();
l->ref();
if (data->light)
data->light->unref();
data->light = l;
// attach the dir light editor
// ??? don't use the path from the root to the headlight
// ??? since we want the light to be relative to the
// ??? camera (i.e. moving the camera shouldn't affect
// ??? the arrow in the editor since that direction
// ??? is relative to the camera).
SoPath *littlePath = new SoPath( data->light );
headlightEditor->attach( littlePath );
headlightEditor->show();
}
else if (data->isManip() == FALSE) {
// NOTE: if isManip() == TRUE, then the light is already a manip
// and doesn't need to be changed.
SoLight *newManip = NULL;
// allocate the right manipulator type if needed
if ( dataType.isDerivedFrom( dirLightType ) ) {
newManip = new SoDirectionalLightManip;
newManip->ref();
}
else if ( dataType.isDerivedFrom( ptLightType ) ) {
newManip = new SoPointLightManip;
newManip->ref();
}
else if ( dataType.isDerivedFrom( spotLightType ) ) {
newManip = new SoSpotLightManip;
newManip->ref();
// Set dropOffRate non-zero, or it will look like a pointLight.
((SoSpotLightManip *)newManip)->dropOffRate = .01;
}
// get the path from the root to the light node
SoSearchAction sa;
sa.setNode( data->light );
sa.apply( currentViewer->getSceneGraph() );
SoPath *path = sa.getPath();
// ??? light is probably turned off so we don't
// ??? need to print a warning message. Just don't
// ??? do anything
if (path == NULL) {
newManip->unref();
return;
}
path->ref();
// Set the size for the light manips.
if ( !calculatedLightManipSize )
calculateLightManipSize();
data->scale->scaleFactor.setValue( lightManipSize, lightManipSize,
lightManipSize );
float invSz = (lightManipSize == 0.0) ? 1.0 : 1.0 / lightManipSize;
data->scaleInverse->scaleFactor.setValue( invSz, invSz, invSz );
// Put the manip into the scene.
if ( dataType.isDerivedFrom( ptLightType ) )
((SoPointLightManip *)newManip)->replaceNode(path);
else if (dataType.isDerivedFrom(dirLightType) )
((SoDirectionalLightManip *)newManip)->replaceNode(path);
else if (dataType.isDerivedFrom(spotLightType))
((SoSpotLightManip *)newManip)->replaceNode(path);
// Okay, now that we stuck that manip in there,
// we better make a note of it...
path->unref();
data->light->unref();
data->light = newManip;
}
}
//
// detach the manip from the light and remove it from the scene
//
else {
if (forHeadlight) {
// detach editor from light
if (headlightEditor != NULL) {
headlightEditor->detach();
headlightEditor->hide();
}
}
else if (data->isManip() == TRUE ) {
// replace the lightManip node with a regular light node
// get the path from the root to the lightManip node
SoSearchAction sa;
sa.setNode( data->light );
sa.apply( currentViewer->getSceneGraph() );
SoPath *path = sa.getPath();
if (path != NULL ) {
path->ref();
SoLight *newLight;
if (dataType.isDerivedFrom(ptLightType)) {
newLight = new SoPointLight;
newLight->ref();
((SoPointLightManip *)data->light)->replaceManip(
path, (SoPointLight *)newLight );
}
else if (dataType.isDerivedFrom(dirLightType)) {
// when removing a directional light manip,
// we don't want to lose the translation of the manip.
// Since the regular light can't hold this value,
// get it from the manip and move it to the translation.
transferDirectionalLightLocation(data);
newLight = new SoDirectionalLight;
newLight->ref();
((SoDirectionalLightManip *)data->light)->replaceManip(
path, (SoDirectionalLight *)newLight );
}
else if (dataType.isDerivedFrom(spotLightType)) {
newLight = new SoSpotLight;
newLight->ref();
((SoSpotLightManip *)data->light)->replaceManip(
path, (SoSpotLight *)newLight );
}
path->unref();
data->light->unref();
data->light = newLight;
}
}
}
}
////////////////////////////////////////////////////////////////////////
//
// Description:
// When removing or writing directional light manip,
// we don't want to lose the translation of the manip.
// Since the regular light can't hold this value,
// get it from the manip and move it to the translation.
//
// Use: private
//
void
SoSceneViewer::transferDirectionalLightLocation( SvLightData *data )
//
////////////////////////////////////////////////////////////////////////
{
if ( !data->light )
return;
if ( !data->light->isOfType(SoDirectionalLightManip::getClassTypeId() ))
return;
// when removing a directional light manip,
// we don't want to lose the translation of the manip.
// Since the regular light can't hold this value,
// get it from the manip and move it to the translation.
SoDirectionalLightManip *manip
= (SoDirectionalLightManip *) data->light;
SoDirectionalLightDragger *dragger
= (SoDirectionalLightDragger *) manip->getDragger();
SbVec3f lightTrans(0,0,0);
if (dragger)
lightTrans += dragger->translation.getValue();
SbVec3f scl = data->scale->scaleFactor.getValue();
lightTrans *= scl[0];
lightTrans += data->translation->translation.getValue();
data->translation->translation = lightTrans;
data->translationInverse->translation = -lightTrans;
// Now zero out the translation in the dragger itself:
dragger->translation = SbVec3f(0,0,0);
}
////////////////////////////////////////////////////////////////////////
//
// Description:
// Called by "Edit Color" light menu entry.
//
// Use: static private
//
void
SoSceneViewer::editLightColorCB(Widget, SvLightData *data, void *)
//
////////////////////////////////////////////////////////////////////////
{
// create the color editor with the right title
if (data->colorEditor == NULL) {
data->colorEditor = new MyColorEditor;
char str[50];
strcpy(str, data->name);
strcat(str, " Light Color");
data->colorEditor->setTitle(str);
}
if ( !data->colorEditor->isAttached() ) {
// if this is for the headlight, make sure we have the
// current viewer headlight
if (data == data->classPt->headlightData) {
SoLight *l = data->classPt->getHeadlight();
l->ref();
if (data->light)
data->light->unref();
data->light = l;
}
// normalize the light intensity
SbColor col;
col = data->light->color.getValue();
col *= data->light->intensity.getValue();
data->light->intensity.setValue( 1.0 );
data->light->color.setValue( col );
data->colorEditor->attach( &data->light->color, data->light );
}
data->colorEditor->show();
}
////////////////////////////////////////////////////////////////////////
//
// Description:
// remove button menu entry callback.
//
// Use: static private
//
void
SoSceneViewer::removeLightCB(Widget, SvLightData *data, void *)
//
////////////////////////////////////////////////////////////////////////
{
data->classPt->removeLight(data);
}
////////////////////////////////////////////////////////////////////////
//
// Description:
// removes the light from the scene, and removes the light data
// and pulldown menu entry.
//
// Use: private
//
void
SoSceneViewer::removeLight(SvLightData *data)
//
////////////////////////////////////////////////////////////////////////
{
// delete the color editor and manip
delete data->colorEditor;
// note: deleted code that dealt with the manip.
// Since the light and the manip are one and the same now.
// unrefing the light also removes the manip
// unref the light (or manip) for this entry
if (data->light)
data->light->unref();
// remove the light from the scene
lightGroup->removeChild( data->lightSwitch );
// nuke the menu entry
if (data->cascadeWidget != NULL)
XtDestroyWidget( data->cascadeWidget );
// remove from list and delete the struct
lightDataList.remove( lightDataList.find(data) );
delete data;
}
////////////////////////////////////////////////////////////////////////
//
// Description:
// Calculate the size for the light manips.
// Called when the first lightmanip is created.
// Also called when a scene is read or imported, assuming lights
// have already been created.
//
// Use: private
//
void
SoSceneViewer::calculateLightManipSize()
//
////////////////////////////////////////////////////////////////////////
{
// Set the size for the light manips.
// Calculate a good size, based on the size of the scene.
// Once this size is determined, use it for all other light manips.
// (We need to save the value because the scene size will change
// over time, but we want all light manips to be the same size.
// This routine will also get called again if a new scene is read in.
// Run a bounding box action on the scene...
SoGetBoundingBoxAction ba(currentViewer->getViewportRegion());
ba.apply( currentViewer->getSceneGraph() );
SbBox3f sceneBox = ba.getBoundingBox();
SbVec3f size;
if (sceneBox.isEmpty()) {
// Oh, just take a guess. Default scene would be 2x2x2
size.setValue(2,2,2);
}
else
size = sceneBox.getMax() - sceneBox.getMin();
//XXX pick a good size!
lightManipSize = .025 * size.length();
// Visit every light entry and set the scale and scaleInverse
// nodes to have the correct lightManipSize.
for (int i = 0; i < lightDataList.getLength(); i++ ) {
SvLightData *data = (SvLightData *) lightDataList[i];
if (data->scale != NULL) {
if (data->scale->scaleFactor.getValue()[0] != lightManipSize)
data->scale->scaleFactor.setValue( lightManipSize,
lightManipSize, lightManipSize );
}
if (data->scaleInverse != NULL) {
float invSz = (lightManipSize == 0.0) ? 1.0 : 1.0 / lightManipSize;
if (data->scaleInverse->scaleFactor.getValue()[0] != invSz)
data->scaleInverse->scaleFactor.setValue( invSz, invSz, invSz );
}
}
calculatedLightManipSize = TRUE;
}
////////////////////////////////////////////////////////////////////////
//
// Description:
// Called whenever a light submenu is mapped on screen (update
// the toggles)
//
// Use: static private
//
void
SoSceneViewer::lightSubmenuDisplay(Widget, SvLightData *data, void *)
//
////////////////////////////////////////////////////////////////////////
{
SoSceneViewer *sv = data->classPt;
SbBool set;
//
// update the "on/off" toggle
//
if (data == sv->headlightData)
set = sv->isHeadlight();
else
set = IS_LIGHT_ON(data->lightSwitch);
if (set)
TOGGLE_ON(data->onOffWidget);
else
TOGGLE_OFF(data->onOffWidget);
//
// update the "Edit" toggle
//
if (data == sv->headlightData)
set = (sv->headlightEditor != NULL && sv->headlightEditor->isVisible());
else
set = (data->isManip() == TRUE );
if (set)
TOGGLE_ON(data->iconWidget);
else
TOGGLE_OFF(data->iconWidget);
}
////////////////////////////////////////////////////////////////////////
//
// Description:
// Called after a paste operation has completed.
//
// Use: static, private
//
void
SoSceneViewer::pasteDoneCB(void *userData, SoPathList *pathList)
//
////////////////////////////////////////////////////////////////////////
{
SoSceneViewer *sv = (SoSceneViewer *) userData;
sv->pasteDone(pathList);
}
////////////////////////////////////////////////////////////////////////
//
// Description:
// Called after a drop operation has completed.
//
// Use: static, private
//
SbBool
SoSceneViewer::iconDropCB(void *userData, const char *filename)
//
////////////////////////////////////////////////////////////////////////
{
SoSceneViewer *sv = (SoSceneViewer *) userData;
sv->fileMode = SV_FILE_IMPORT;
return sv->doFileIO(filename);
}
////////////////////////////////////////////////////////////////////////
//
// Description:
// Called during a drop operation of INVENTOR objects.
//
// Use: static, private
//
SbBool
SoSceneViewer::objDropCB(
void *userData,
Atom target,
void *data, uint32_t numBytes)
//
////////////////////////////////////////////////////////////////////////
{
SoSceneViewer *sv = (SoSceneViewer *) userData;
SoPathList *pathList = NULL;
SbBool success = FALSE;
Display *d = SoXt::getDisplay();
if (data != NULL) {
if (target == _ATOM_(d, "INVENTOR_2_1") ||
target == _ATOM_(d, "VRML_1_0") ||
target == _ATOM_(d, "INVENTOR") ||
target == _ATOM_(d, "INVENTOR_2_0")) {
pathList = SoByteStream::unconvert(data, numBytes);
if (pathList != NULL && pathList->getLength() > 0) {
sv->pasteDone(pathList);
success = TRUE;
// pathList will be deleted by pasteDone...
}
}
}
return success;
}
////////////////////////////////////////////////////////////////////////
//
// Description:
// Called after a paste operation has completed, this adds the
// pasted data to our scene graph.
//
// Use: private
//
void
SoSceneViewer::pasteDone(SoPathList *pathList)
//
////////////////////////////////////////////////////////////////////////
{
if (pathList->getLength() <= 0)
return;
// If this is the only obj, we will view all
SbBool doViewAll = (selection->getNumChildren() == 0);
// first, detach manips from all selected objects
detachManipFromAll();
// now, turn off the sel/desel callbacks.
// we'll turn them on again after we've adjusted the selection
selection->removeSelectionCallback( SoSceneViewer::selectionCallback, this );
selection->removeDeselectionCallback( SoSceneViewer::deselectionCallback, this );
// now deselect all, and build up a selection from the pasted paths
selection->deselectAll();
// Add every path in the path list as a child under selection.
// Then select each of these paths.
for (int i = 0; i < pathList->getLength(); i++) {
// if the head of the path is a selection node, then don't
// paste the head - rather, paste all of its children.
// this makes sure we don't have more than 1 selection node.
// While we're adding the paths as children, select each path.
SoPath *p = (*pathList)[i];
SoNode *head = p->getHead();
SoPath *selpath;
if (head->isOfType(SoSelection::getClassTypeId())) {
for (int j = 0; j < ((SoSelection *)head)->getNumChildren(); j++) {
selection->addChild(((SoSelection *)head)->getChild(j));
// create a path from selection to this child
// and select the path.
selpath = new SoPath(selection);
selpath->append(selection->getNumChildren() - 1);
selection->select(selpath);
}
}
else {
// not a selection node, so just add it.
selection->addChild(p->getHead());
// create a path from selection to this child
// and select the path.
selpath = new SoPath(selection);
selpath->append(selection->getNumChildren() - 1);
selection->select(selpath);
}
}
// now add manips to all the selected objects
attachManipToAll(curManip);
// and turn the sel/desel callbacks back on
selection->addSelectionCallback( SoSceneViewer::selectionCallback, this );
selection->addDeselectionCallback( SoSceneViewer::deselectionCallback, this );
// enable/disable keyboard shortcuts
updateCommandAvailability();
// View all?
if (doViewAll)
viewAll();
delete pathList;
}
////////////////////////////////////////////////////////////////////////
//
// Description:
// Build routine for SceneViewer. This creates all of the X widgets
//
// Use: public, virtual
Widget
SoSceneViewer::buildWidget(Widget parent)
//
////////////////////////////////////////////////////////////////////////
{
int n;
Arg args[10];
// create a form to hold everything together
SbVec2s size = getSize();
n = 0;
if (size[0] != 0 && size[1] != 0) {
XtSetArg(args[n], XtNwidth, size[0]); n++;
XtSetArg(args[n], XtNheight, size[1]); n++;
}
mgrWidget = XtCreateWidget(getWidgetName(), xmFormWidgetClass, parent, args, n);
registerWidget(mgrWidget);
// create the topbar menu
if (showMenuFlag)
buildAndLayoutMenu(mgrWidget);
// build and layout the current viewer
whichViewer = SV_VWR_EXAMINER;
setTitle("SceneViewer (Examiner)");
currentViewer = viewerList[whichViewer] = new SoXtExaminerViewer(mgrWidget);
currentViewer->setSceneGraph(sceneGraph);
currentViewer->setGLRenderAction(highlightRA);
currentViewer->redrawOnSelectionChange(selection);
setOverlayLogo(currentViewer);
// Fog
environment->fogColor.setValue( currentViewer->getBackgroundColor() );
// since we created the camera, do a view all and save this
// as the starting point (don't want default camera values).
viewAll();
saveHomePosition();
buildAndLayoutViewer(currentViewer);
// manage those children
if (showMenuFlag)
XtManageChild(menuWidget);
currentViewer->show();
// clipboard is for copy/paste of 3d data.
//??? what if this SceneViewer had its widget destroyed and rebuilt?
//??? we need to destroy the clipboards when that happens.
clipboard = new SoXtClipboard(mgrWidget);
MyDropSite::registerCallback(
mgrWidget, iconDropCB, objDropCB, this);
return mgrWidget;
}
////////////////////////////////////////////////////////////////////////
//
// Description:
// Builds and layout the given viewer.
//
// Use: private
void
SoSceneViewer::buildAndLayoutViewer(SoXtFullViewer *vwr)
//
////////////////////////////////////////////////////////////////////////
{
if (mgrWidget == NULL)
return;
// build the viewer if necessary
if (vwr->getWidget() == NULL) {
fprintf(stderr, "ERROR - need to create the viewer widget before it can be layed out\n");
return;
}
// layout the viewer to be attached under the topbar menu
// (if the pulldown menu is shown)
Arg args[12];
int n = 0;
if ( showMenuFlag ) {
XtSetArg(args[n], XmNtopAttachment, XmATTACH_WIDGET); n++;
XtSetArg(args[n], XmNtopWidget, menuWidget); n++;
}
else {
XtSetArg(args[n], XmNtopAttachment, XmATTACH_FORM); n++;
}
XtSetArg(args[n], XmNbottomAttachment, XmATTACH_FORM); n++;
XtSetArg(args[n], XmNleftAttachment, XmATTACH_FORM); n++;
XtSetArg(args[n], XmNrightAttachment, XmATTACH_FORM); n++;
XtSetValues(vwr->getWidget(), args, n);
}
////////////////////////////////////////////////////////////////////////
//
// Description:
// Create topbar menu. Invalid buttons are rendered gray.
// Each button's callback include a structure with the ID
// of the button and a pointer to the SoSceneViewer that created
// it.
//
// Use: private
//
void
SoSceneViewer::buildAndLayoutMenu(Widget parent)
//
////////////////////////////////////////////////////////////////////////
{
if (menuWidget != NULL)
return;
Arg args[8];
int i, j, n, id;
WidgetList buttons, subButtons;
int itemCount, subItemCount;
WidgetClass widgetClass;
String callbackReason;
XmString xmstr;
// create topbar menu
menuWidget = XmCreateMenuBar(parent, "menuBar", NULL, 0);
Arg popupargs[4];
int popupn = 0;
#ifdef MENUS_IN_POPUP
Widget shell = SoXt::getShellWidget(mgrWidget);
SoXt::getPopupArgs(XtDisplay(menuWidget), SCREEN(shell), popupargs, &popupn);
#endif
itemCount = XtNumber(pulldownData);
buttons = (WidgetList) XtMalloc(itemCount * sizeof(Widget));
for (i = 0; i < itemCount; i++) {
// Make Topbar menu button
#ifndef __linux__
Widget subMenu = XmCreatePulldownMenu(menuWidget, NULL, popupargs, popupn);
#else
Widget subMenu = XmCreatePulldownMenu(menuWidget, "menu", popupargs, popupn);
#endif
#ifdef MENUS_IN_POPUP
// register callbacks to load/unload the pulldown colormap when the
// pulldown menu is posted.
SoXt::registerColormapLoad(subMenu, shell);
#endif
id = pulldownData[i].id;
menuItems[id].widget = subMenu;
XtAddCallback(subMenu, XmNmapCallback,
(XtCallbackProc) SoSceneViewer::menuDisplay,
(XtPointer) &menuItems[id]);
XtSetArg(args[0], XmNsubMenuId, subMenu);
buttons[i] = XtCreateWidget(pulldownData[i].name,
xmCascadeButtonGadgetClass, menuWidget, args, 1);
// Make subMenu buttons
subItemCount = pulldownData[i].subItemCount;
subButtons = (WidgetList) XtMalloc(subItemCount * sizeof(Widget));
for (j = 0; j < subItemCount; j++) {
if (pulldownData[i].subMenu[j].buttonType == SV_SEPARATOR)
subButtons[j] = XtCreateWidget(NULL, xmSeparatorGadgetClass,
subMenu, NULL, 0);
else {
switch (pulldownData[i].subMenu[j].buttonType) {
case SV_PUSH_BUTTON:
widgetClass = xmPushButtonGadgetClass;
callbackReason = XmNactivateCallback;
n = 0;
break;
case SV_TOGGLE_BUTTON:
widgetClass = xmToggleButtonGadgetClass;
callbackReason = XmNvalueChangedCallback;
n = 0;
break;
case SV_RADIO_BUTTON:
widgetClass = xmToggleButtonGadgetClass;
callbackReason = XmNvalueChangedCallback;
XtSetArg(args[0], XmNindicatorType, XmONE_OF_MANY);
n = 1;
break;
default:
fprintf(stderr, "SceneViewer INTERNAL ERROR: bad buttonType\n");
break;
}
// check for keyboard accelerator
char *accel = pulldownData[i].subMenu[j].accelerator;
char *accelText = pulldownData[i].subMenu[j].accelText;
xmstr = NULL;
if (accel != NULL) {
XtSetArg(args[n], XmNaccelerator, accel); n++;
if (accelText != NULL) {
xmstr = XmStringCreate(accelText,
XmSTRING_DEFAULT_CHARSET);
XtSetArg(args[n], XmNacceleratorText, xmstr); n++;
}
}
subButtons[j] = XtCreateWidget(
pulldownData[i].subMenu[j].name,
widgetClass,
subMenu, args, n);
if (xmstr != NULL)
XmStringFree(xmstr);
id = pulldownData[i].subMenu[j].id;
menuItems[id].widget = subButtons[j];
XtAddCallback(subButtons[j], callbackReason,
(XtCallbackProc)SoSceneViewer::processTopbarEvent,
(XtPointer) &menuItems[id]);
}
}
XtManageChildren(subButtons, subItemCount);
XtFree((char *)subButtons);
}
XtManageChildren(buttons, itemCount);
XtFree((char *)buttons);
//
// layout the menu bar
//
n = 0;
XtSetArg(args[n], XmNtopAttachment, XmATTACH_FORM); n++;
XtSetArg(args[n], XmNleftAttachment, XmATTACH_FORM); n++;
XtSetArg(args[n], XmNrightAttachment, XmATTACH_FORM); n++;
XtSetValues(menuWidget, args, n);
//
// Add the light items which are dynamically created
//
// first add the headlight
addLightMenuEntry(headlightData);
XtUnmanageChild(headlightData->removeWidget);
XtUnmanageChild(headlightData->editColorWidget);
xmstr = XmStringCreate( Light.editlight, XmSTRING_DEFAULT_CHARSET);
XtSetArg(args[0], XmNlabelString, xmstr);
XtSetValues(headlightData->iconWidget, args, 1);
XmStringFree(xmstr);
// now the regular lights
for (i=0; i < lightDataList.getLength(); i++)
addLightMenuEntry( (SvLightData *) lightDataList[i] );
}
////////////////////////////////////////////////////////////////////////
//
// Description:
// Show/hide the pulldown menu bar.
//
// Use: public
void
SoSceneViewer::showMenu(SbBool flag)
//
////////////////////////////////////////////////////////////////////////
{
if (showMenuFlag == flag || mgrWidget == NULL) {
showMenuFlag = flag;
return;
}
showMenuFlag = flag;
if ( showMenuFlag ) {
// turn topbar menu on
if (menuWidget == NULL)
buildAndLayoutMenu(mgrWidget);
XtManageChild(menuWidget);
// attach viewer to bottom of menu
Arg args[2];
int n = 0;
XtSetArg(args[n], XmNtopAttachment, XmATTACH_WIDGET); n++;
XtSetArg(args[n], XmNtopWidget, menuWidget); n++;
XtSetValues(currentViewer->getWidget(), args, n);
}
else {
// attach viewer to form
Arg args[2];
int n = 0;
XtSetArg(args[n], XmNtopAttachment, XmATTACH_FORM); n++;
XtSetValues(currentViewer->getWidget(), args, n);
// turn topbar menu off
if (menuWidget != NULL)
XtUnmanageChild(menuWidget);
}
}
////////////////////////////////////////////////////////////////////////
//
// Manage the changes in the selected node(s)
//
// Use: private, static
//
SoPath *
SoSceneViewer::pickFilterCB(void *userData, const SoPickedPoint *pick)
//
////////////////////////////////////////////////////////////////////////
{
SoSceneViewer *sv = (SoSceneViewer *) userData;
SoPath *filteredPath = NULL;
// If there are any transform manips along the path, check if they
// belong to our personal set of manips.
// If so, change the path so it points to the object the manip
// is attached to.
SoFullPath *fullP = (SoFullPath *) pick->getPath();
SoNode *n;
for (int i = 0; i < fullP->getLength(); i++ ) {
n = fullP->getNode(i);
if (n->isOfType(SoTransformManip::getClassTypeId())) {
int which = sv->maniplist->find((SoTransformManip *) n);
if (which != -1) {
filteredPath = sv->maniplist->getSelectionPath(which);
return filteredPath;
}
}
}
// If we didn't pick one of our manipulators, then return the pickPath
filteredPath = pick->getPath();
return filteredPath;
}
////////////////////////////////////////////////////////////////////////
//
// Manage the changes in the selected node(s)
//
// Use: private, static
//
void
SoSceneViewer::deselectionCallback( void *userData, // my data
SoPath *deselectedPath ) // object
//
////////////////////////////////////////////////////////////////////////
{
SoSceneViewer *sv = (SoSceneViewer *) userData;
// remove the manip
sv->detachManip( deselectedPath );
// Remove editors
if (sv->materialEditor)
sv->materialEditor->detach();
if (sv->colorEditor)
sv->colorEditor->detach();
if (sv->transformSliderSet)
sv->transformSliderSet->setNode( NULL );
// enable/disable cmd key shortcuts and menu items
sv->updateCommandAvailability();
}
////////////////////////////////////////////////////////////////////////
//
// Manage the changes in the selected node(s)
//
// Use: private, static
//
void
SoSceneViewer::selectionCallback( void *userData, // my data
SoPath *selectedPath ) // object
//
////////////////////////////////////////////////////////////////////////
{
SoSceneViewer *sv = (SoSceneViewer *) userData;
// attach the manip
sv->attachManip( sv->curManip, selectedPath );
//
// If active, attach editors to new selection.
//
SoMaterial *mtl = NULL;
if ( sv->materialEditor && sv->materialEditor->isVisible()) {
mtl = sv->findMaterialForAttach(selectedPath);
sv->materialEditor->attach(mtl);
}
if (sv->colorEditor && sv->colorEditor->isVisible()) {
if (mtl == NULL)
mtl = sv->findMaterialForAttach(selectedPath);
sv->colorEditor->attach(&(mtl->diffuseColor), 0, mtl);
}
if ( sv->transformSliderSet && sv->transformSliderSet->isVisible() ) {
SoPath *editTransformPath;
editTransformPath = sv->findTransformForAttach( selectedPath );
if ( editTransformPath == NULL ) {
sv->transformSliderSet->setNode( NULL );
}
else {
editTransformPath->ref();
sv->transformSliderSet->setNode(((SoFullPath *)editTransformPath)->getTail() );
editTransformPath->unref();
}
}
// enable/disable cmd key shortcuts and menu items
sv->updateCommandAvailability();
}
////////////////////////////////////////////////////////////////////////
//
// Remove selected objects from the scene graph.
// In this demo, we don't really know how the graphs are set up,
// so act conservatively, and simply remove the node which is the
// tail of the path from its parent. Note if the node is instanced,
// all instances will be destroyed. Then travel up the path to a
// parent separator. If there are no other shapes under the separator,
// destroy it too.
//
// Other applications might delete selected objects a different way,
// depending on how the data is organized in the scene graph.
//
// Use: protected
//
void
SoSceneViewer::destroySelectedObjects()
//
////////////////////////////////////////////////////////////////////////
{
for (int i = selection->getNumSelected() - 1; i >= 0; i--) {
SoPath *p = (*selection)[i];
p->ref();
// Deselect this path
selection->deselect(i);
// Remove the tail node from the graph
SoGroup *g = (SoGroup *) p->getNodeFromTail(1);
g->removeChild(p->getTail());
// Travel up the path to separators, and see if this was
// the only shape node under the sep. If so, delete the sep too.
// (Don't go all the way up to the selection node).
SbBool shapeFound = FALSE;
int j = 0;
while ((! shapeFound) && (j < p->getLength() - 1)) {
SoNode *n = p->getNodeFromTail(j);
if (n->isOfType(SoSeparator::getClassTypeId())) {
// Search for other shape nodes
SoSearchAction sa;
sa.setFind(SoSearchAction::TYPE);
sa.setType(SoShape::getClassTypeId());
sa.apply(n);
// If no other shapes under this separator, delete it!
if (sa.getPath() == NULL) {
g = (SoGroup *) p->getNodeFromTail(j + 1);
g->removeChild(n);
// Reset j since we have a new end of path
j = 0;
}
else shapeFound = TRUE;
}
// Else a group with no children?
else if (n->isOfType(SoGroup::getClassTypeId()) &&
(((SoGroup *)n)->getNumChildren() == 0)) {
g = (SoGroup *) p->getNodeFromTail(j + 1);
g->removeChild(n);
// Reset j since we have a new end of path
j = 0;
}
// Else continue up the path looking for separators
else j++;
}
p->unref();
}
}
////////////////////////////////////////////////////////////////////////
//
// This enables/disables cmd key shortcuts and menu items
// based on whether there are any objects, and/or any selected objects
// in the scene graph.
//
// Use: static private
//
//
void
SoSceneViewer::updateCommandAvailability()
//
////////////////////////////////////////////////////////////////////////
{
Arg args[1];
// enable/disable based on the number of child objects in scene
if (selection->getNumChildren() == 0)
XtSetArg(args[0], XmNsensitive, False);
else XtSetArg(args[0], XmNsensitive, True);
// save (if no children, nothing to save)
XtSetValues(menuItems[SV_FILE_SAVE].widget, args, 1);
XtSetValues(menuItems[SV_FILE_SAVE_AS].widget, args, 1);
// pickAll (if no children, nothing to pick)
XtSetValues(menuItems[SV_EDIT_PICK_ALL].widget, args, 1);
// enable/disable based on the number of selected objects
if (selection->getNumSelected() == 0)
XtSetArg(args[0], XmNsensitive, False);
else XtSetArg(args[0], XmNsensitive, True);
// if nothing selected, then cannot pick parent, cut, copy, delete,
// view selection, bring up editors
XtSetValues(menuItems[SV_EDIT_PICK_PARENT].widget, args, 1);
XtSetValues(menuItems[SV_EDIT_CUT].widget, args, 1);
XtSetValues(menuItems[SV_EDIT_COPY].widget, args, 1);
XtSetValues(menuItems[SV_EDIT_DELETE].widget, args, 1);
XtSetValues(menuItems[SV_VIEW_SELECTION].widget, args, 1);
XtSetValues(menuItems[SV_EDITOR_TRANSFORM].widget, args, 1);
XtSetValues(menuItems[SV_EDITOR_MATERIAL].widget, args, 1);
XtSetValues(menuItems[SV_EDITOR_COLOR].widget, args, 1);
}
////////////////////////////////////////////////////////////////////////
//
// Called by Xt when a menu is about to be displayed.
// This gives us a chance to update any items in the menu.
//
// Use: static private
//
void
SoSceneViewer::menuDisplay(Widget, SoSceneViewerData *data, XtPointer)
//
////////////////////////////////////////////////////////////////////////
{
SoSceneViewer *sv = data->classPt;
Arg args[1];
char str[100];
XmString xmstr;
switch (data->id) {
case SV_FILE:
// disable saving if there isn't any geometry
if (sv->selection->getNumChildren() == 0)
XtSetArg(args[0], XmNsensitive, False);
else
XtSetArg(args[0], XmNsensitive, True);
XtSetValues(sv->menuItems[SV_FILE_SAVE].widget, args, 1);
XtSetValues(sv->menuItems[SV_FILE_SAVE_AS].widget, args, 1);
// update the "Save" menu entry to reflect the current file name
#ifndef EXPLORER
strcpy(str,fileData[5].name );
#else
strcpy(str,fileData[0].name );
#endif
if (sv->fileName != NULL) {
// get the file name withought the entire path
char *pt = strrchr(sv->fileName, '/'); // last occurance of '/'
pt = (pt == NULL) ? sv->fileName : pt + 1;
strcat(str, " -> ");
strcat(str, pt);
}
xmstr = XmStringCreate(str, XmSTRING_DEFAULT_CHARSET);
XtSetArg(args[0], XmNlabelString, xmstr);
XtSetValues(sv->menuItems[SV_FILE_SAVE].widget, args, 1);
XmStringFree(xmstr);
break;
#ifndef EXPLORER
case SV_EDIT:
// disable cut, copy, delete, pickParent if there is no selection
if(sv->selection->getNumSelected() == 0)
XtSetArg(args[0], XmNsensitive, False);
else
XtSetArg(args[0], XmNsensitive, True);
XtSetValues(sv->menuItems[SV_EDIT_PICK_PARENT].widget, args, 1);
XtSetValues(sv->menuItems[SV_EDIT_CUT].widget, args, 1);
XtSetValues(sv->menuItems[SV_EDIT_COPY].widget, args, 1);
XtSetValues(sv->menuItems[SV_EDIT_DELETE].widget, args, 1);
// disable pick all if there are nothing to pick
if (sv->selection->getNumChildren() == 0)
XtSetArg(args[0], XmNsensitive, False);
else
XtSetArg(args[0], XmNsensitive, True);
XtSetValues(sv->menuItems[SV_EDIT_PICK_ALL].widget, args, 1);
break;
#endif /* EXPLORER */
case SV_VIEW:
// set pick/edit toggle
if ( sv->isViewing() )
TOGGLE_OFF(sv->menuItems[SV_VIEW_PICK].widget);
else TOGGLE_ON(sv->menuItems[SV_VIEW_PICK].widget);
#ifdef EXPLORER
// set user pick toggle
if ( sv->userModeFlag )
TOGGLE_ON(sv->menuItems[SV_VIEW_USER].widget);
else TOGGLE_OFF(sv->menuItems[SV_VIEW_USER].widget);
#endif
// Set the correct viewer
TOGGLE_OFF(sv->menuItems[SV_VIEW_EXAMINER].widget);
TOGGLE_OFF(sv->menuItems[SV_VIEW_WALK].widget);
TOGGLE_OFF(sv->menuItems[SV_VIEW_PLANE].widget);
TOGGLE_OFF(sv->menuItems[SV_VIEW_FLY].widget);
switch ( sv->whichViewer ) {
case SV_VWR_EXAMINER:
TOGGLE_ON(sv->menuItems[SV_VIEW_EXAMINER].widget);
break;
case SV_VWR_WALK:
TOGGLE_ON(sv->menuItems[SV_VIEW_WALK].widget);
break;
case SV_VWR_FLY:
TOGGLE_ON(sv->menuItems[SV_VIEW_FLY].widget);
break;
case SV_VWR_PLANE:
TOGGLE_ON(sv->menuItems[SV_VIEW_PLANE].widget);
break;
}
// set the correct transparency type
TOGGLE_OFF(sv->menuItems[SV_VIEW_SCREEN_TRANSPARENCY].widget);
TOGGLE_OFF(sv->menuItems[SV_VIEW_BLEND_TRANSPARENCY].widget);
TOGGLE_OFF(sv->menuItems[SV_VIEW_DELAY_BLEND_TRANSPARENCY].widget);
TOGGLE_OFF(sv->menuItems[SV_VIEW_SORT_BLEND_TRANSPARENCY].widget);
switch( sv->getTransparencyType() ) {
case SoGLRenderAction::SCREEN_DOOR:
TOGGLE_ON(sv->menuItems[SV_VIEW_SCREEN_TRANSPARENCY].widget);
break;
case SoGLRenderAction::BLEND:
TOGGLE_ON(sv->menuItems[SV_VIEW_BLEND_TRANSPARENCY].widget);
break;
case SoGLRenderAction::DELAYED_BLEND:
TOGGLE_ON(sv->menuItems[SV_VIEW_DELAY_BLEND_TRANSPARENCY].widget);
break;
case SoGLRenderAction::SORTED_OBJECT_BLEND:
TOGGLE_ON(sv->menuItems[SV_VIEW_SORT_BLEND_TRANSPARENCY].widget);
break;
}
// disable view selection if nothing is selected
if ( sv->selection->getNumSelected() == 0 )
XtSetArg(args[0], XmNsensitive, False);
else
XtSetArg(args[0], XmNsensitive, True);
XtSetValues(sv->menuItems[SV_VIEW_SELECTION].widget, args, 1);
// set fog toggle
if ( sv->fogFlag )
TOGGLE_ON(sv->menuItems[SV_VIEW_FOG].widget);
else TOGGLE_OFF(sv->menuItems[SV_VIEW_FOG].widget);
// set antialiasing toggle
if ( sv->antialiasingFlag )
TOGGLE_ON(sv->menuItems[SV_VIEW_ANTIALIASING].widget);
else TOGGLE_OFF(sv->menuItems[SV_VIEW_ANTIALIASING].widget);
break;
#ifndef EXPLORER
case SV_SELECTION:
// mirror the selection policy
TOGGLE_OFF(sv->menuItems[SV_SEL_SINGLE_SELECT].widget);
TOGGLE_OFF(sv->menuItems[SV_SEL_TOGGLE_SELECT].widget);
TOGGLE_OFF(sv->menuItems[SV_SEL_SHIFT_SELECT].widget);
switch ( sv->selection->policy.getValue() ) {
case SoSelection::SINGLE:
TOGGLE_ON (sv->menuItems[SV_SEL_SINGLE_SELECT].widget);
break;
case SoSelection::TOGGLE:
TOGGLE_ON (sv->menuItems[SV_SEL_TOGGLE_SELECT].widget);
break;
case SoSelection::SHIFT:
TOGGLE_ON (sv->menuItems[SV_SEL_SHIFT_SELECT].widget);
break;
default:
fprintf(stderr, "INTERNAL ERROR, unknown selection policy\n");
break;
}
break;
#endif /* EXPLORER */
case SV_EDITOR:
// disable items if there is no selection
if(sv->selection->getNumSelected() == 0)
XtSetArg(args[0], XmNsensitive, False);
else
XtSetArg(args[0], XmNsensitive, True);
XtSetValues(sv->menuItems[SV_EDITOR_TRANSFORM].widget, args, 1);
XtSetValues(sv->menuItems[SV_EDITOR_MATERIAL].widget, args, 1);
XtSetValues(sv->menuItems[SV_EDITOR_COLOR].widget, args, 1);
break;
case SV_MANIP:
// First, the section with the different types of manipulators.
TOGGLE_OFF( sv->menuItems[SV_MANIP_HANDLEBOX].widget );
TOGGLE_OFF( sv->menuItems[SV_MANIP_TRANSFORMER].widget );
TOGGLE_OFF( sv->menuItems[SV_MANIP_TRACKBALL].widget );
TOGGLE_OFF( sv->menuItems[SV_MANIP_JACK].widget );
TOGGLE_OFF( sv->menuItems[SV_MANIP_CENTERBALL].widget );
TOGGLE_OFF( sv->menuItems[SV_MANIP_XFBOX].widget );
TOGGLE_OFF( sv->menuItems[SV_MANIP_TABBOX].widget );
TOGGLE_OFF( sv->menuItems[SV_MANIP_NONE].widget );
// Turn appropriate radio button on
if (sv->curManip == SV_HANDLEBOX)
TOGGLE_ON(sv->menuItems[SV_MANIP_HANDLEBOX].widget);
else if (sv->curManip == SV_TRACKBALL)
TOGGLE_ON(sv->menuItems[SV_MANIP_TRACKBALL].widget);
else if (sv->curManip == SV_TRANSFORMER)
TOGGLE_ON(sv->menuItems[SV_MANIP_TRANSFORMER].widget);
else if (sv->curManip == SV_JACK)
TOGGLE_ON(sv->menuItems[SV_MANIP_JACK].widget);
else if (sv->curManip == SV_CENTERBALL)
TOGGLE_ON(sv->menuItems[SV_MANIP_CENTERBALL].widget);
else if (sv->curManip == SV_XFBOX)
TOGGLE_ON(sv->menuItems[SV_MANIP_XFBOX].widget);
else if (sv->curManip == SV_TABBOX)
TOGGLE_ON(sv->menuItems[SV_MANIP_TABBOX].widget);
else
TOGGLE_ON(sv->menuItems[SV_MANIP_NONE].widget);
// Next, the toggle that says whether we replace current
// manipulators every time we change the type given in the menu.
if (sv->curManipReplaces == TRUE )
TOGGLE_ON( sv->menuItems[SV_MANIP_REPLACE_ALL].widget );
else
TOGGLE_OFF( sv->menuItems[SV_MANIP_REPLACE_ALL].widget );
break;
case SV_LIGHT:
// disable the add light entries if we have more than 8 lights
if (sv->lightDataList.getLength() < 8)
XtSetArg(args[0], XmNsensitive, True);
else
XtSetArg(args[0], XmNsensitive, False);
XtSetValues(sv->menuItems[SV_LIGHT_ADD_DIRECT].widget, args, 1);
XtSetValues(sv->menuItems[SV_LIGHT_ADD_POINT].widget, args, 1);
XtSetValues(sv->menuItems[SV_LIGHT_ADD_SPOT].widget, args, 1);
// update the headlight label (show on/off with '*')
sv->isHeadlight() ? strcpy(str, "* ") : strcpy(str, " ");
strcat(str, sv->headlightData->name);
xmstr = XmStringCreate(str, XmSTRING_DEFAULT_CHARSET);
XtSetArg(args[0], XmNlabelString, xmstr);
XtSetValues(sv->headlightData->cascadeWidget, args, 1);
XmStringFree(xmstr);
// update the lights label (show on/off with '*')
{
for (int i=0; i < sv->lightDataList.getLength(); i++) {
SvLightData *data = (SvLightData *) sv->lightDataList[i];
IS_LIGHT_ON(data->lightSwitch) ? strcpy(str, "* ") : strcpy(str, " ");
strcat(str, data->name);
xmstr = XmStringCreate(str, XmSTRING_DEFAULT_CHARSET);
XtSetArg(args[0], XmNlabelString, xmstr);
XtSetValues(data->cascadeWidget, args, 1);
XmStringFree(xmstr);
}
}
break;
default:
break;
}
}
////////////////////////////////////////////////////////////////////////
//
// Description:
// Determines whether a given node is affected by a transform.
//
// Use: static, public
//
SbBool
SoSceneViewer::isAffectedByTransform(
SoNode *theNode ) // node to be affected?
//
////////////////////////////////////////////////////////////////////////
{
if ( theNode->isOfType( SoGroup::getClassTypeId() )
|| theNode->isOfType( SoShape::getClassTypeId() )
|| theNode->isOfType( SoCamera::getClassTypeId() )
|| theNode->isOfType( SoLight::getClassTypeId() ) ) {
return TRUE;
}
return FALSE;
}
////////////////////////////////////////////////////////////////////////
//
// Description:
// Determines whether a given node is affected by material node.
//
// Use: static, public
//
SbBool
SoSceneViewer::isAffectedByMaterial(
SoNode *theNode ) // node to be affected?
//
////////////////////////////////////////////////////////////////////////
{
if ( theNode->isOfType( SoGroup::getClassTypeId() )
|| theNode->isOfType( SoShape::getClassTypeId() ) ) {
return TRUE;
}
return FALSE;
}
////////////////////////////////////////////////////////////////////////
//
// Description:
// Create the lights and camera environment structure.
//
// Use: private
//
void
SoSceneViewer::createLightsCameraEnvironment()
//
////////////////////////////////////////////////////////////////////////
{
// Group {
// Label { "SoSceneViewer Environment v3.0" }
// Camera {}
// Environment {}
// Group {
// Switch { Light 1 } # switch is child 0, light is child 0
// Switch { Light 2 } # switch is child 1, light is child 0
// ...
// }
// }
//
// NOTE: since the camera may be switched by the viewer (ortho/perspective toggle)
// make sure to get the camera from the viewer (and not cache the camera).
lightsCameraEnvironment = new SoGroup;
environment = new SoEnvironment;
lightGroup = new SoGroup;
envLabel = new SoLabel;
envLabel->label.setValue(SV_ENV_LABEL);
lightsCameraEnvironment->addChild(envLabel);
#ifndef EXPLORER
// Explorer SceneViewer doesn't remove cameras from the Scene, so
// don't add any...
lightsCameraEnvironment->addChild(new SoPerspectiveCamera);
#endif
lightsCameraEnvironment->addChild(environment);
lightsCameraEnvironment->addChild(lightGroup);
}
////////////////////////////////////////////////////////////////////////
//
// Description:
// Brings up the "About..." dialog (same code as gavin demo programs)
//
// Use: private
//
void
SoSceneViewer::showAboutDialog()
//
////////////////////////////////////////////////////////////////////////
{
if (access("/usr/demos/Inventor/SceneViewer.about", R_OK) != 0)
{
system("xconfirm -t 'Sorry, could not find "
"/usr/demos/Inventor/SceneViewer.about' > /dev/null");
return;
}
char command[100];
sprintf(command, "showcase -v /usr/demos/Inventor/SceneViewer.about");
int err = system(command);
if (err)
{
system("xconfirm -t 'You must install showcase"
" for this function to work' > /dev/null");
return;
}
}
//
// define those generic virtual functions
//
const char *
SoSceneViewer::getDefaultWidgetName() const
{ return "SoSceneViewer"; }
const char *
SoSceneViewer::getDefaultTitle() const
{ return "SceneViewer"; }
const char *
SoSceneViewer::getDefaultIconTitle() const
{ return "SceneViewer"; }
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