[info-performer] questions about channel statistics drawing

From: John Kelso (kelso++at++nist.gov)
Date: 05/19/2004 09:48:56

• Next message: Larry E. Ramey: "[info-performer] Altix"
• Previous message: Buckley, Bob CTR USCENTRAL/JNIC: "[info-performer] Changing Perfly Frame Rate"

Hi all,

Below is a modified version of simple.C which creates two windows with a
single channel in each. One channel has drawStats called every frame.

When I do the drawStats in the first window/channel, I see both lines and
text. If I switch to the second window/channel by changing the line to
    pfChannel *statsChan = chan[1] ;
all I get is the lines- no text is shown. Why is this??

As another test I made a variation on this program which displays the two
channels in non-overlapping viewports in a single window, and I was able
to see text using either channel. So it seems that it has something to
do with multiple windows

Also, and this applies to either window/channel, the line
    statsChan->getFStats()->setClass(PFSTATS_ALL, PFSTATS_ON) ;
seems to add a dark translucent "curtain" across the channel, as well as
adding the extra statistics. How can I add the statistics but lose the
curtain??

This was run on a Dell Latitude D800 with Red Hat 9 and Performer 3.1

Please let me know if you know what I might be doing wrong.

Many thanks,

-John

//////////////////////////////////////////////////////////////////
#include <stdlib.h>

#include <Performer/pf/pfChannel.h>
#include <Performer/pf/pfLightSource.h>
#include <Performer/pf/pfNode.h>
#include <Performer/pf/pfScene.h>
#include <Performer/pf/pfFrameStats.h>

#include <Performer/pfutil.h>
#include <Performer/pfdu.h>

int main (int argc, char **argv) {
  
  if (argc < 2) {
    pfNotify(PFNFY_FATAL, PFNFY_USAGE, "Usage: %s file.ext ...\n",argv[0]);
    pfExit() ;
  }
  
  pfInit();
  
  for (int i=1; i<argc; i++)
    pfdInitConverter(argv[i]);
  
  pfConfig();
  
  pfFilePath(".:/usr/share/Performer/data");
  
  pfScene *scene = new pfScene;
  scene->addChild(new pfLightSource);
  
  for (int i=1; i<argc; i++) {
    if (! (scene->addChild(pfdLoadFile(argv[i]))))
      pfExit();
  }
  
  pfPipe *p = pfGetPipe(0);
  
  // set up two nearly identical windows and channels
  pfPipeWindow *pw[2] ;
  pfChannel *chan[2] ;
  char *name[2] = {"one", "two"} ;
  
  for (int i=0; i<2; i++) {
    pw[i] = new pfPipeWindow(p);
    
    pw[i]->setName(name[i]);
    pw[i]->setOriginSize(i*500,0,500,500);
    
    chan[i] = new pfChannel(p);
    chan[i]->setScene(scene);
    pw[i]->addChan(chan[i]) ;
    pw[i]->open();
  }
  
  // choose which channel to display stats- 0 or 1
  pfChannel *statsChan = chan[0] ;
  
  // this adds a translucent "curtain" over the channel
  statsChan->getFStats()->setClass(PFSTATS_ALL, PFSTATS_ON) ;
  
  pfSphere bsphere;
  scene->getBound(&bsphere);
  for (int i=0; i<2; i++)
    chan[i]->setNearFar(1.0f, 10.0f * bsphere.radius);

  float t = 0.0f;
  while (t < 10.0f) {
    pfCoord view;
    float s, c;
    
    pfSync();
    
    statsChan->drawStats();
    
    pfFrame();
    
    t = pfGetTime();
    pfSinCos(45.0f*t, &s, &c);
    view.hpr.set(45.0f*t, -10.0f, 0);
    view.xyz.set(2.0f * bsphere.radius * s,
                 -2.0f * bsphere.radius *c,
                 0.5f * bsphere.radius);
    for (int i=0; i<2; i++)
      chan[i]->setView(view.xyz, view.hpr);
  }
  
  pfExit();
  
  // yeah, like we'll really get to return 0- but we have to make the
  // compiler happy all the same 8^)
  return 0;
}

• Next message: Larry E. Ramey: "[info-performer] Altix"
• Previous message: Buckley, Bob CTR USCENTRAL/JNIC: "[info-performer] Changing Perfly Frame Rate"

This archive was generated by hypermail 2b29 : Wed May 19 2004 - 09:51:15 PDT