// react to keys
void keyboard(unsigned char k, int x, int y)
{
switch(k)
{
case 27:
case 'q':
_scene = NULL;
_point1_core = NULL;
_point2_core = NULL;
_point3_core = NULL;
point1_beacon = NULL;
point2_beacon = NULL;
point3_beacon = NULL;
_mgr = NULL;
OSG::osgExit();
exit(1);
break;
case 'w':
OSG::SceneFileHandler::the()->write(_scene, "scene.osb.gz", true);
printf("wrote scene.osb.gz\n");
break;
case '1':
{
if(_point1_core->getOn() == false)
_point1_core->setOn(true);
else
_point1_core->setOn(false);
break;
}
case '2':
{
if(_point2_core->getOn() == false)
_point2_core->setOn(true);
else
_point2_core->setOn(false);
break;
}
case '3':
{
if(_point3_core->getOn() == false)
_point3_core->setOn(true);
else
_point3_core->setOn(false);
break;
}
}
glutPostRedisplay();
}
// Initialize GLUT & OpenSG and set up the scene
int doMain(int argc, char **argv)
{
printf("Press key '1', '2', or '3' to toggle the light sources.\n");
// OSG init
OSG::osgInit(argc,argv);
// GLUT init
int winid = setupGLUT(&argc, argv);
// the connection between GLUT and OpenSG
OSG::GLUTWindowUnrecPtr gwin= OSG::GLUTWindow::create();
gwin->setGlutId(winid);
gwin->setSize( 800, 800 );
gwin->init();
// Create the shader material
OSG::ChunkMaterialUnrecPtr cmat = OSG::ChunkMaterial::create();
OSG::MaterialChunkUnrecPtr matc = OSG::MaterialChunk::create();
matc->setAmbient(OSG::Color4f(0.1f, 0.1f, 0.1f, 1.0f));
matc->setDiffuse(OSG::Color4f(0.3f, 0.3f, 0.3f, 1.0f));
matc->setSpecular(OSG::Color4f(0.8f, 0.8f, 0.8f, 1.0f));
matc->setShininess(100);
matc->setLit(true);
OSG::ShaderProgramChunkUnrecPtr shl = OSG::ShaderProgramChunk::create();
OSG::ShaderProgramUnrecPtr shl_vp =
OSG::ShaderProgram::createVertexShader();
shl_vp->setProgram(_vp_program);
shl->addShader(shl_vp);
OSG::ShaderProgramUnrecPtr shl_fp =
OSG::ShaderProgram::createFragmentShader();
shl_fp->setProgram(_fp_program);
shl->addShader(shl_fp);
shl_vp->addProceduralVariable ("Light0Active", &light0Active);
shl_vp->addProceduralVariable ("Light1Active", &light1Active);
shl_vp->addNodeProceduralVariable("Light2Active", &light2Active);
cmat->addChunk(matc);
cmat->addChunk(shl);
// create root node
_scene = OSG::Node::create();
// create two light sources.
OSG::TransformUnrecPtr point1_trans;
OSG::NodeUnrecPtr point1 =
OSG::makeCoredNode<OSG::PointLight>(&_point1_core);
point1_beacon = OSG::makeCoredNode<OSG::Transform >(&point1_trans);
point1_trans->editMatrix().setTranslate(-10.0, 5.0, 5.0);
_point1_core->setAmbient(0.0f, 0.0f, 0.0f , 1.0f);
_point1_core->setDiffuse(1.0f, 0.0f, 0.0f, 1.0f);
_point1_core->setSpecular(1.0f, 1.0f, 1.0f, 1.0f);
_point1_core->setBeacon(point1_beacon);
_point1_core->setOn(true);
OSG::TransformUnrecPtr point2_trans;
OSG::NodeUnrecPtr point2 =
OSG::makeCoredNode<OSG::PointLight>(&_point2_core);
point2_beacon = OSG::makeCoredNode<OSG::Transform >(&point2_trans);
point2_trans->editMatrix().setTranslate(10.0, 5.0, 5.0);
_point2_core->setAmbient(0.0f, 0.0f, 0.0f, 1.0f);
_point2_core->setDiffuse(0.0f, 1.0f, 0.0f, 1.0f);
_point2_core->setSpecular(1.0f, 1.0f, 1.0f, 1.0f);
_point2_core->setBeacon(point2_beacon);
_point2_core->setOn(true);
point1->addChild(point2);
OSG::TransformUnrecPtr point3_trans;
OSG::NodeUnrecPtr point3 =
OSG::makeCoredNode<OSG::PointLight>(&_point3_core);
point3_beacon = OSG::makeCoredNode<OSG::Transform >(&point3_trans);
point3_trans->editMatrix().setTranslate(0.0, -12.0, 5.0);
_point3_core->setAmbient(0.0f, 0.0f, 0.0f, 1.0f);
_point3_core->setDiffuse(0.5f, 0.0f, 1.0f, 1.0f);
_point3_core->setSpecular(1.0f, 1.0f, 1.0f, 1.0f);
_point3_core->setBeacon(point3_beacon);
_point3_core->setOn(true);
point2->addChild(point3);
// create a sphere.
OSG::GeometryUnrecPtr geo = OSG::makeLatLongSphereGeo (100, 100, 1.0);
geo->setMaterial(cmat);
OSG::NodeUnrecPtr sphere = OSG::makeNodeFor(geo);
point3->addChild(sphere);
_scene->setCore(OSG::Group::create());
_scene->addChild(point1);
// create the SimpleSceneManager helper
_mgr = OSG::SimpleSceneManager::create();
// tell the manager what to manage
_mgr->setWindow(gwin );
_mgr->setRoot(_scene);
_mgr->turnHeadlightOff();
// show the whole scene
_mgr->showAll();
// enable local lights.
// OSG::RenderAction *ract =
// dynamic_cast<OSG::RenderAction *>(_mgr->getRenderAction());
// ract->setLocalLights(true);
return 0;
}
// react to keys
void keyboard(unsigned char k, int x, int y)
{
switch(k)
{
case 27:
case 'q':
_scene = NULL;
_point1_core = NULL;
_point2_core = NULL;
_point3_core = NULL;
shl = NULL;
delete _mgr;
exit(1);
break;
case 'w':
OSG::SceneFileHandler::the()->write(_scene, "scene.osb.gz", true);
printf("wrote scene.osb.gz\n");
break;
case '1':
{
if(_point1_core->getOn() == false)
_point1_core->setOn(true);
else
_point1_core->setOn(false);
break;
}
case '2':
{
if(_point2_core->getOn() == false)
_point2_core->setOn(true);
else
_point2_core->setOn(false);
break;
}
case '3':
{
if(_point3_core->getOn() == false)
_point3_core->setOn(true);
else
_point3_core->setOn(false);
break;
}
case 'i':
shl->subUniformParameter("OSGLight0Active");
break;
case 'I':
shl->setUniformParameter("OSGLight0Active", 0);
break;
case 'o':
shl->subUniformParameter("OSGLight1Active");
break;
case 'O':
shl->setUniformParameter("OSGLight1Active", 0);
break;
case 'p':
shl->subUniformParameter("OSGLight2Active");
break;
case 'P':
shl->setUniformParameter("OSGLight2Active", 0);
break;
}
glutPostRedisplay();
}
