void VTKPolyDataMapper::initGeometries(void)
{
NodeUnrecPtr pRoot = Node::create();
pRoot->setCore(Group::create());
setRoot(pRoot);
for(UInt32 i = 0; i < 4; ++i)
{
GeometryUnrecPtr pGeo = Geometry::create();
ChunkMaterialUnrecPtr pMat = ChunkMaterial::create();
MaterialChunkUnrecPtr pMatChunk = MaterialChunk::create();
GeoPnt3fPropertyUnrecPtr pPoints = GeoPnt3fProperty ::create();
GeoUInt32PropertyUnrecPtr pLengths = GeoUInt32Property ::create();
GeoUInt8PropertyUnrecPtr pTypes = GeoUInt8Property ::create();
GeoColor4fPropertyUnrecPtr pColors = GeoColor4fProperty::create();
GeoVec3fPropertyUnrecPtr pNormals = GeoVec3fProperty ::create();
if(i < 2)
{
pMatChunk->setLit(false);
}
pMatChunk->setDiffuse (OSG::Color4f(1.0, 1.0, 1.0, 1.0));
pMatChunk->setSpecular (OSG::Color4f(0.0, 0.0, 0.0, 1.0));
pMatChunk->setShininess(10.0f);
pMat->addChunk(pMatChunk);
TwoSidedLightingChunkUnrecPtr pTSLChunk =
TwoSidedLightingChunk::create();
pMat->addChunk(pTSLChunk);
pGeo->setDlistCache(false );
pGeo->setMaterial (pMat );
pGeo->setPositions (pPoints );
pGeo->setLengths (pLengths);
pGeo->setTypes (pTypes );
pGeo->setColors (pColors );
if(i > 1)
{
pGeo->setNormals(pNormals);
}
OSG::NodeUnrecPtr pGeoRoot = OSG::Node::create();
pGeoRoot->setCore (pGeo);
pGeoRoot->setTravMask(0 );
pRoot->addChild(pGeoRoot);
this->pushToGeometries (pGeo );
this->pushToMaterials (pMat );
this->pushToMaterialChunks(pMatChunk);
this->pushToPositions (pPoints );
this->pushToLength (pLengths );
this->pushToTypes (pTypes );
this->pushToColors (pColors );
this->pushToNormals (pNormals );
this->pushToGeoRoots (pGeoRoot );
}
}
// Setup the part of the scene rooted at animRoot
// This includes a file to animate, a beacon for a light,
// and a staged core to render this subtree from the position
// of the light.
void initAnimSetup(int argc, char **argv)
{
// beacon for light and stage camera
OSG::GroupNodeRefPtr beacon = OSG::GroupNodeRefPtr::create();
// transformation for beacon
cam_transScene = OSG::TransformNodeRefPtr::create();
cam_transScene.node()->addChild(beacon);
// light
OSG::DirectionalLightNodeRefPtr dlight =
OSG::DirectionalLightNodeRefPtr::create();
dlight->setAmbient (.3f, .3f, .3f, 1);
dlight->setDiffuse ( 1, 1, 1, 1);
dlight->setDirection( 0, 0, 1 );
dlight->setBeacon (beacon );
// animRoot
animRoot = OSG::GroupNodeRefPtr::create();
animRoot.node()->addChild(cam_transScene );
// Load the file and put it in the graph
// under the sceneXform node.
OSG::NodeUnrecPtr file = NULL;
if(argc > 1)
{ file = OSG::SceneFileHandler::the()->read(argv[1]); }
if(file == NULL)
{
std::cerr << "Couldn't load file, ignoring" << std::endl;
file = OSG::makeTorus(.5, 2, 16, 16);
}
OSG::Vec3f min,max;
OSG::commitChanges();
file->updateVolume();
file->dump();
file->getVolume().getBounds(min, max);
std::cout << "Volume: from " << min << " to " << max << std::endl;
sceneTrans.setValues(min[0] + ((max[0] - min[0]) * 0.5),
min[1] + ((max[1] - min[1]) * 0.5),
max[2] + ( max[2] - min[2]) * 4.5 );
sceneXform = OSG::TransformNodeRefPtr::create();
sceneXform.node()->addChild(file);
OSG::NodeUnrecPtr pBoxNode = OSG::makeBox(1, 1, 1, 5, 5, 5);
pBoxNode->setTravMask(pBoxNode->getTravMask() & 0x0001);
sceneXform.node()->addChild(pBoxNode);
dlight.node()->addChild(sceneXform);
// ---- STAGE RENDERING SETUP --- //
// Camera: setup camera to point from beacon (light pos)
// with a 90deg FOV to render the scene
OSG::PerspectiveCameraUnrecPtr stage_cam = OSG::PerspectiveCamera::create();
stage_cam->setBeacon(beacon);
stage_cam->setFov (OSG::osgDegree2Rad(90));
stage_cam->setNear (0.1f);
stage_cam->setFar (100000);
// Background
OSG::SolidBackgroundUnrecPtr bkgnd = OSG::SolidBackground::create();
bkgnd->setColor(OSG::Color3f(0,1,0));
// FBO setup
pFBO = OSG::FrameBufferObject::create();
pTexBuffer = OSG::TextureBuffer::create();
#ifdef USE_DEPTH_TEXTURE
OSG::TextureBufferUnrecPtr pDepthBuffer = OSG::TextureBuffer::create();
pDepthBuffer->setTexture(txDepth);
#else
OSG::RenderBufferUnrecPtr pDepthBuffer = OSG::RenderBuffer ::create();
pDepthBuffer->setInternalFormat(GL_DEPTH_COMPONENT24 );
#endif
pTexBuffer->setTexture (tx1o);
pTexBuffer->setReadBack(true);
pFBO->setSize(512, 512);
pFBO->setColorAttachment(pTexBuffer, 0);
pFBO->setDepthAttachment(pDepthBuffer );
pFBO->editMFDrawBuffers()->clear();
pFBO->editMFDrawBuffers()->push_back(GL_COLOR_ATTACHMENT0_EXT);
// Stage core setup
OSG::SimpleStageNodeRefPtr pStage = OSG::SimpleStageNodeRefPtr::create();
pStage->setRenderTarget(pFBO );
pStage->setCamera (stage_cam );
pStage->setBackground (bkgnd);
pStage->addPreRenderFunctor (&testPreRenderCB, "" );
pStage->addPostRenderFunctor(&testPostRenderCB, "");
// Setup sub-tree visitor
// - This will setup a graph that will render a subtree during traversal
pVisit = OSG::VisitSubTreeNodeRefPtr::create();
pVisit->setSubTreeRoot(dlight);
pStage.node()->addChild(pVisit);
animRoot.node()->addChild(pStage);
animRoot.node()->addChild(dlight);
}