RE: Simple Program
Don Tidrow (dtidrow++at++nvl.army.mil)
Fri, 03 Dec 1999 18:07:27 -0500 (EST)
On 03-Dec-1999 Matthew Hesher wrote:
> Good evening all,
> I sat down today and decided to write my first performer program. My first
> attempt was miserable, so I read alot of docs and I have a window now. I'm
> attemping to read in a mesh and display it (very similar to simple.C that
> comes with Performer). However, I just can't seem to get a picture to
> appear.
> If anyone could point me in the right direction to finding the problem with
> my
> program, I would appreciate it. Below is the program.
> Curt Hesher
> hesher++at++cs.fsu.edu
> P.S. The path to the mesh isn't the problem. Here's the output when it
> runs:
>
> calais 148% myScene
> PF Notice: pfdLoadFile_iv:
> /usr/people/hesher/Inventor/MODELS/IV/teapot.iv
> PF Notice: Using 72Hz video rate.
>
>
>
> // My second attempt at a Performer program
> // compile this with "cc myScene.c++ -lpf"
> // or with "make"
>
> // Regular includes
>#include <iostream.h>
>
> // Performer includes
>#include <Performer/pf/pfChannel.h>
>#include <Performer/pf/pfLightSource.h>
>#include <Performer/pfdu.h>
>
> int main (int argc, char *argv[])
> {
> float time = 0.0f;
>
> if(pfInit() == -1) {
> cerr << "Error in pfInit. Exiting.\n";
> pfExit();
> exit(-1);
> }
>
> // Use default multiprocessing mode based on number of
> // processors.
> pfMultiprocess( PFMP_DEFAULT );
>
>
> // Call pfdInitConverter before pfConfig
> const char ext[] = "iv";
> if(!pfdInitConverter(ext)) {
> cerr << "Could not load DSO for " << ext << ". Exiting." << endl;
> pfExit();
> exit(-1);
> }
>
> // Fork App, Cull, Draw, and some other stuff
> if(pfConfig() == -1) {
> cerr << "Error in pfConfig. Exiting.\n";
> pfExit();
> exit(-1);
> }
>
> // Load a mesh
> const char meshFile[80] =
> "/usr/people/hesher/Inventor/MODELS/IV/teapot.iv";
> pfNode *myObject = pfdLoadFile(meshFile);
>
> // Create the Scene
> pfScene *scene = new pfScene;
> scene -> addChild(myObject);
>
> // Create a light and attach it to the scene
> scene -> addChild(new pfLightSource);
>
>
> // Create the Pipe
> pfPipe *p = pfGetPipe(0);
> pfPipeWindow *pw = new pfPipeWindow(p);
> pw -> setWinType(PFPWIN_TYPE_X);
> pw -> setOriginSize(0,0,512,512);
> pw -> open();
>
>
> // Create the Channel
> pfChannel *chan = new pfChannel(p);
> chan -> setScene(scene);
> chan -> setFOV(135.0f, 0.0f);
> //chan -> setAutoAspect(PFFRUST_CALC_HORIZ);
> //chan -> setAutoAspect(PFFRUST_CALC_VERT);
> // makePersp and makeOrtho disable setAutoAspect
> //chan -> makePersp(-10.0f, 10.0f, -10.0f, 10.0f); //left, right, bottom,
> top
> //chan -> drawStats();
> pfVec3 position(0.0f, 5.0f, 0.0f);
^^^^ try -5.0 here
> pfVec3 orientation(0.0f, 0.0f, 0.0f);
This has you looking down the +y axis, so the teapot is "behind" you
> chan -> setView(position, orientation);
>
> // Determine the size of the bounding sphere
> pfSphere bsphere;
> myObject -> getBound(&bsphere);
> chan -> setNearFar(1.0f, 10.0f * bsphere.radius);
>
> while (time < 20.0f)
> {
> //pfSync(); //pfFrame will automatically call pfSync
> pfFrame();
> time += 0.1;
> }
>
> // Terminate parallel processes and exit
> pfExit();
> return 0;
> }
> -----------------------------------------------------------------------
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> Submissions: info-performer++at++sgi.com
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One year later, their packet logs were found...
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--------------------------------------------------
| Don Tidrow |
| Visual Simulation Developer |
| US Army TACOM (currently working with NVESD) |
| ph: (703)704-1361 fax: (703)704-1753 |
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