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Initial check-in based on OpenGL Performer 2.4 tree.
-flynnt

//
// Copyright 1995, Silicon Graphics, Inc.
// ALL RIGHTS RESERVED
//
// This source code ("Source Code") was originally derived from a
// code base owned by Silicon Graphics, Inc. ("SGI")
// 
// LICENSE: SGI grants the user ("Licensee") permission to reproduce,
// distribute, and create derivative works from this Source Code,
// provided that: (1) the user reproduces this entire notice within
// both source and binary format redistributions and any accompanying
// materials such as documentation in printed or electronic format;
// (2) the Source Code is not to be used, or ported or modified for
// use, except in conjunction with OpenGL Performer; and (3) the
// names of Silicon Graphics, Inc.  and SGI may not be used in any
// advertising or publicity relating to the Source Code without the
// prior written permission of SGI.  No further license or permission
// may be inferred or deemed or construed to exist with regard to the
// Source Code or the code base of which it forms a part. All rights
// not expressly granted are reserved.
// 
// This Source Code is provided to Licensee AS IS, without any
// warranty of any kind, either express, implied, or statutory,
// including, but not limited to, any warranty that the Source Code
// will conform to specifications, any implied warranties of
// merchantability, fitness for a particular purpose, and freedom
// from infringement, and any warranty that the documentation will
// conform to the program, or any warranty that the Source Code will
// be error free.
// 
// IN NO EVENT WILL SGI BE LIABLE FOR ANY DAMAGES, INCLUDING, BUT NOT
// LIMITED TO DIRECT, INDIRECT, SPECIAL OR CONSEQUENTIAL DAMAGES,
// ARISING OUT OF, RESULTING FROM, OR IN ANY WAY CONNECTED WITH THE
// SOURCE CODE, WHETHER OR NOT BASED UPON WARRANTY, CONTRACT, TORT OR
// OTHERWISE, WHETHER OR NOT INJURY WAS SUSTAINED BY PERSONS OR
// PROPERTY OR OTHERWISE, AND WHETHER OR NOT LOSS WAS SUSTAINED FROM,
// OR AROSE OUT OF USE OR RESULTS FROM USE OF, OR LACK OF ABILITY TO
// USE, THE SOURCE CODE.
// 
// Contact information:  Silicon Graphics, Inc., 
// 1600 Amphitheatre Pkwy, Mountain View, CA  94043, 
// or:  http://www.sgi.com
//
//
//   zrgb.C: basic libpr z-buffered polygons with mouse input.  
//
//

#include <X11/X.h>
#include <X11/keysym.h>
#include <stdlib.h>

#include <Performer/pr/pfWindow.h>
#include <Performer/pr/pfGeoSet.h>


int
main(int, char**)
{
    int mx=0, my=0;
    int mousedown=0;
    int winSizeX, winSizeY;

    pfInit();
    pfInitState(NULL);

    // Initialize GL 
    pfWindow *win = new pfWindow;
    win->setOriginSize(100, 100, 500, 500);
    win->setName("OpenGL Performer");
    win->setWinType(PFWIN_TYPE_X);
    win->open();
    win->getSize(&winSizeX, &winSizeY);

    // set up the window
    pfFrustum *frust = new pfFrustum;
    frust->setNearFar(30, 60);
    frust->makeSimple(40);
    frust->apply();
    delete frust;

    /// set up X input event handling
    Display *dsp = pfGetCurWSConnection();
    Window xwin = win->getWSWindow();
    XSelectInput(dsp, xwin,  StructureNotifyMask | KeyPressMask | 
		 PointerMotionMask | ButtonPressMask | ButtonReleaseMask );
    XMapWindow(dsp, xwin);
    XSync(dsp,FALSE);
    
    pfVec3 *polygon1 = new pfVec3[6];
    polygon1[0].set(-10.0, -10.0,   0.0);
    polygon1[1].set( 10.0, -10.0,   0.0);
    polygon1[2].set(-10.0,  10.0,   0.0);
    polygon1[3].set(  0.0, -10.0, -10.0);
    polygon1[4].set(  0.0, -10.0,  10.0);
    polygon1[5].set(  0.0,   5.0, -10.0);
    
    pfVec3 *polygon2 = new pfVec3[4];
    polygon2[0].set(-10.0,   6.0,   4.0);
    polygon2[1].set(-10.0,   3.0,   4.0);
    polygon2[2].set(  4.0,  -9.0, -10.0);
    polygon2[3].set(  4.0,  -6.0, -10.0);
    
    pfVec4 *colors1 = new pfVec4[6];
    colors1[0].set( 0.0f, 0.0f, 0.0f, 0.0f );
    colors1[1].set( 0.5f, 0.5f, 0.5f, 0.0f );
    colors1[2].set( 1.0f, 1.0f, 1.0f, 0.0f );
    colors1[3].set( 1.0f, 1.0f, 0.0f, 0.0f );
    colors1[4].set( 0.0f, 1.0f, 0.5f, 0.0f );
    colors1[5].set( 0.0f, 0.0f, 1.0f, 0.0f );
    
    pfVec4 *colors2 = new pfVec4[4];
    colors2[0].set( 1.0f, 1.0f, 0.0f, 0.0f );
    colors2[1].set( 1.0f, 0.0f, 1.0f, 0.0f );
    colors2[2].set( 0.0f, 0.0f, 1.0f, 0.0f );
    colors2[3].set( 1.0f, 0.0f, 1.0f, 0.0f );

    pfGeoSet *gset1 = new pfGeoSet;
    gset1->setAttr(PFGS_COORD3, PFGS_PER_VERTEX, polygon1, NULL);
    gset1->setAttr(PFGS_COLOR4, PFGS_PER_VERTEX, colors1, NULL);
    gset1->setPrimType(PFGS_TRIS);
    gset1->setNumPrims(2);

    pfGeoSet *gset2 = new pfGeoSet;
    gset2->setAttr(PFGS_COORD3, PFGS_PER_VERTEX, polygon2, NULL);
    gset2->setAttr(PFGS_COLOR4, PFGS_PER_VERTEX, colors2, NULL);
    gset2->setPrimType(PFGS_QUADS);
    gset2->setNumPrims(1);

    while (TRUE) 
    {
	static pfVec4 clr(0.15f, 0.39f, 0.78f, 1.0f);

	pfClear(PFCL_COLOR | PFCL_DEPTH, &clr);

	pfPushMatrix();
		pfTranslate(0.0, 0.0, -40.0);
		pfRotate(PF_X, (float) mx);
		pfRotate(PF_Y, (float) my - 60.0f);

	        gset1->draw();
	        gset2->draw();
	pfPopMatrix();

	win->swapBuffers();
	
	while (XPending(dsp))
	{
	    XEvent event;
	    XNextEvent(dsp, &event);
	    switch (event.type) 
	    {
	    case ConfigureNotify: // Have a move/resize event
	    {
		XConfigureEvent *config_event = (XConfigureEvent *) &event;
		winSizeX = config_event->width;
		winSizeY = config_event->height;
		break;
	    }
	    case KeyPress:
	    {
		char buf[100];
		int rv;
		KeySym ks;
		rv = XLookupString(&event.xkey, buf, sizeof(buf), &ks, 0);
		switch(ks) 
		{
		case XK_Escape: 
		    exit(0);
		    break;
		}
	    }
	    case ButtonPress: // Have a mouse button push event
	    {
		XButtonEvent *button_event = (XButtonEvent *) &event;
		if (button_event->button == Button1)
		{
		    mousedown = 1;
		    mx = event.xbutton.x;
		    my = winSizeY - event.xbutton.y;
		}
		break;
	    }
	    case ButtonRelease: // Have a mouse button release event
	    {
		XButtonEvent *button_event = (XButtonEvent *) &event;
		if (button_event->button == Button1)
			mousedown = 0;
		break;
	    }
	    case MotionNotify: // Have a mouse motion event
		if (mousedown)
		{
		    XMotionEvent *motion_event = (XMotionEvent *) &event;
		    // get window relative mouse coordinates
		    mx =  motion_event->x;
		    // reverse Y coord so 0 is at bottom of window
		    my =  winSizeY - motion_event->y;
		}
		break;
	    } // switch
	} // while have event
    }
}