renee++at++pat.mdc.com
Thu, 3 Feb 94 12:19:45 CST
My lights, Sun1 and Sun2, only show up if the fourth argument is 1.0. I thought
that would make them local lights. And the position doesn't seem to matter
one bit. Both lights seem to be coming from the same spot so the colors are
blending together. I've tried normalizing the position vector and it didn't
make any difference. I tried using the exact light code that's in simple.c
and the sun only showed up when I set the fourth argument to 1.0.
Thanks
Renee Strong
renee++at++pat.mdc.com
void *arena;
static void
OpenPipeline (pfPipe *p)
{
pfLight *Sun1, *Sun2;
pfLightModel *lmodel;
/* negotiate with window-manager */
foreground();
prefposition(100,500,100,500);
winopen("IRIS Performer");
/* negotiate with GL */
pfInitGfx(p);
arena = pfGetSharedArena();
/* create light sources */
Sun1 = pfNewLight(arena);
//pfLightPos(Sun1, -0.979367, 0.202079, -0.001943, 1.0f);
pfLightPos(Sun1, -151.209320, 31.200001, -0.300000, 1.0f);
pfLightColor(Sun1, 0.0, 1.0, 0.0);
pfLightAmbient(Sun1, 0.0, 0.0, 0.0);
Sun2 = pfNewLight(arena);
//pfLightPos(Sun2, 0.001904, -0.013963, -0.999901, 1.0f);
pfLightPos(Sun2, 0.300000, -2.200000, -157.548874, 1.0f);
pfLightColor(Sun2, 1.0, 0.0, 0.0);
pfLightAmbient(Sun2, 0.0, 0.0, 0.0);
/* create a default lighting model */
lmodel = pfNewLModel(arena);
pfLModelAmbient(lmodel, 0.2, 0.2, 0.2);
pfApplyLModel(lmodel);
pfLightOn(Sun1);
pfLightOn(Sun2);
cout << "curently active lights: " << pfGetCurLights(lights) << "\n";
pfCullFace(PFCF_BACK);
}
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