// Initialize GLUT & OpenSG and set up the scene
int main(int argc, char **argv)
{
printf("Usage: testCGShader [normal map filename]\n");
const char *normal_map_img_name = "opensg_logoDOT3.png";
OSG::Color4f tmp;
if( argc > 1 )
normal_map_img_name = argv[1];
// 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
// Read the image for the normal texture
OSG::ImageUnrecPtr normal_map_img = OSG::Image::create();
if(!normal_map_img->read(normal_map_img_name))
{
fprintf(stderr, "Couldn't read normalmap texture '%s'!\n", normal_map_img_name);
return 1;
}
OSG::ChunkMaterialUnrecPtr cmat = OSG::ChunkMaterial::create();
OSG::MaterialChunkUnrecPtr matc = OSG::MaterialChunk::create();
matc->setAmbient(OSG::Color4f(0.1, 0.1, 0.1, 1.0));
matc->setDiffuse(OSG::Color4f(0.3, 0.3, 0.3, 1.0));
matc->setSpecular(OSG::Color4f(0.8, 0.8, 0.8, 1.0));
matc->setShininess(100);
matc->setLit(true);
OSG::SHLChunkUnrecPtr shl = OSG::SHLChunk::create();
shl->setVertexProgram(_vp_program);
shl->setFragmentProgram(_fp_program);
OSG::TextureObjChunkUnrecPtr tex_normal_map =
OSG::TextureObjChunk::create();
OSG::TextureEnvChunkUnrecPtr tex_normal_map_env =
OSG::TextureEnvChunk::create();
tex_normal_map->setImage(normal_map_img);
tex_normal_map->setMinFilter(GL_LINEAR_MIPMAP_LINEAR);
tex_normal_map->setMagFilter(GL_LINEAR);
tex_normal_map->setWrapS(GL_REPEAT);
tex_normal_map->setWrapT(GL_REPEAT);
tex_normal_map_env->setEnvMode(GL_MODULATE);
//cmat->addChunk(matc);
cmat->addChunk(shl);
cmat->addChunk(tex_normal_map);
cmat->addChunk(tex_normal_map_env);
// create root node
_scene = OSG::Node::create();
// create geometry
//GeometryPtr geo = makeLatLongSphereGeo (100, 100, 1.0);
OSG::GeometryUnrecPtr geo = OSG::makePlaneGeo(1.0, 1.0, 100, 100);
geo->setMaterial(cmat);
OSG::NodeUnrecPtr torus = OSG::Node::create();
torus->setCore(geo);
// add torus to scene
OSG::GroupUnrecPtr group = OSG::Group::create();
_scene->setCore(group);
_scene->addChild(torus);
// create the SimpleSceneManager helper
_mgr = new OSG::SimpleSceneManager;
// tell the manager what to manage
_mgr->setWindow(gwin );
_mgr->setRoot(_scene);
/*
// create point headlight
_mgr->turnHeadlightOff();
NodePtr headlight = _mgr->getHighlight();
PointLightPtr light = PointLight::create();
beginEditCP(light);
light->setAmbient (.3, .3, .3, 1);
light->setDiffuse ( 1, 1, 1, 1);
light->setSpecular ( 1, 1, 1, 1);
light->setBeacon (_mgr->getCamera()->getBeacon());
endEditCP(light);
beginEditCP(_scene);
_scene->setCore(light);
endEditCP(_scene);
*/
// show the whole scene
_mgr->showAll();
// GLUT main loop
glutMainLoop();
return 0;
}
// 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(0.1, 0.1, 0.1, 1.0));
matc->setDiffuse(OSG::Color4f(0.3, 0.3, 0.3, 1.0));
matc->setSpecular(OSG::Color4f(0.8, 0.8, 0.8, 1.0));
matc->setShininess(100);
matc->setLit(true);
OSG::SHLChunkUnrecPtr shl = OSG::SHLChunk::create();
shl->setVertexProgram(_vp_program);
shl->setFragmentProgram(_fp_program);
shl->addParameterCallback("OSGL0SpecialParameter", light0Active);
shl->addParameterCallback("OSGL1SpecialParameter", light1Active);
shl->addParameterCallback("OSGL2SpecialParameter", 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 = new OSG::SimpleSceneManager;
// 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;
}
// Initialize GLUT & OpenSG and set up the scene
int doMain(int argc, char **argv)
{
// 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::SHLChunkUnrecPtr shl = OSG::SHLChunk::create();
shl->setProgramParameter(GL_GEOMETRY_INPUT_TYPE_EXT,
GL_TRIANGLES);
shl->setProgramParameter(GL_GEOMETRY_OUTPUT_TYPE_EXT,
GL_TRIANGLE_STRIP);
shl->setProgramParameter(GL_GEOMETRY_VERTICES_OUT_EXT, 6);
shl->setVertexProgram(_vertex_shader);
shl->setFragmentProgram(_fragment_shader);
shl->setGeometryProgram(_geometry_shader);
cmat->addChunk(shl);
// create root node
_scene = OSG::Node::create();
// create torus
OSG::GeometryUnrecPtr geo = OSG::makeTorusGeo(.8, 1.8, 128, 128);
geo->setMaterial(cmat);
OSG::NodeUnrecPtr torus = OSG::Node::create();
torus->setCore(geo);
// add torus to scene
OSG::GroupUnrecPtr group = OSG::Group::create();
_scene->setCore(group);
_scene->addChild(torus);
// create the SimpleSceneManager helper
_mgr = OSG::SimpleSceneManager::create();
// tell the manager what to manage
_mgr->setWindow(gwin );
_mgr->setRoot(_scene);
// show the whole scene
_mgr->showAll();
return 0;
}