Cleaned up osgkdtree example
This commit is contained in:
Robert Osfield
parent
de33a031d4
commit
ccb50019e4
@ -1,14 +1,7 @@
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SET(TARGET_SRC
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SET(TARGET_SRC
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fixeddivision.cpp
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variabledivision.cpp
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osgkdtree.cpp
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osgkdtree.cpp
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)
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)
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SET(TARGET_H
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fixeddivision.h
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variabledivision.h
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)
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SET(TARGET_ADDED_LIBRARIES osgSim )
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SET(TARGET_ADDED_LIBRARIES osgSim )
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@ -1,491 +0,0 @@
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/* OpenSceneGraph example, osgintersection.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#include "fixeddivision.h"
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namespace fixeddivision
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{
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struct TriangleIndicesCollector
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{
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TriangleIndicesCollector():
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_indices(0)
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{
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}
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inline void operator () (unsigned int v1, unsigned int v2, unsigned int v3)
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{
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_indices->push_back(v1);
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_indices->push_back(v2);
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_indices->push_back(v3);
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}
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Indices* _indices;
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};
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KDTree* KDTreeBuilder::createKDTree(osg::Geometry* geometry)
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{
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#ifdef VERBOSE_OUTPUT
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osg::notify(osg::NOTICE)<<"osg::KDTreeBuilder::createKDTree()"<<std::endl;
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#endif
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osg::Vec3Array* vertices = dynamic_cast<osg::Vec3Array*>(geometry->getVertexArray());
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if (!vertices) return 0;
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if (vertices->size() <= _targetNumVerticesPerLeaf) return 0;
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osg::ref_ptr<KDTree> kdTree = new KDTree;
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kdTree->_geometry = geometry;
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kdTree->_bb = kdTree->_geometry->getBound();
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kdTree->_vertices = vertices;
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unsigned int estimatedSize = (unsigned int)(2.0*float(vertices->size())/float(_targetNumVerticesPerLeaf));
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#ifdef VERBOSE_OUTPUT
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osg::notify(osg::NOTICE)<<"kdTree->_kdNodes.reserve()="<<estimatedSize<<std::endl<<std::endl;
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#endif
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kdTree->_kdNodes.reserve(estimatedSize);
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kdTree->_kdLeaves.reserve(estimatedSize);
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computeDivisions(*kdTree);
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_numVerticesProcessed += vertices->size();
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if (_processTriangles)
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{
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osg::TriangleIndexFunctor<TriangleIndicesCollector> collectTriangleIndices;
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collectTriangleIndices._indices = &(kdTree->_vertexIndices);
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geometry->accept(collectTriangleIndices);
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KDPrimitiveLeaf* primitiveLeaf = createKDPrimitiveLeaf();
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primitiveLeaf->_indices.insert(primitiveLeaf->_indices.end(),
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kdTree->_vertexIndices.begin(),
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kdTree->_vertexIndices.end());
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// osg::notify(osg::NOTICE)<<"kdTree->_vertexIndices.size()="<<kdTree->_vertexIndices.size()<<std::endl;
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int leafNum = kdTree->addPrimitiveLeaf(primitiveLeaf);
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osg::BoundingBox bb = kdTree->_bb;
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int nodeNum = divideTriangles(*kdTree, bb, leafNum, 0);
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std::cout<<"_vertexIndices.size() = "<<kdTree->_vertexIndices.size()<<std::endl;
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std::cout<<"_primtiveLeaf.size() = "<<kdTree->_primitiveList.size()<<std::endl;
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unsigned int numIndices = 0;
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for(KDTree::KDPrimitiveList::iterator itr = kdTree->_primitiveList.begin();
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itr != kdTree->_primitiveList.end();
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++itr)
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{
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numIndices += (*itr)->_indices.size();
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}
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std::cout<<"total numIndices = "<<numIndices<<std::endl;
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typedef std::map<Triangle, unsigned int> TriangleMap;
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TriangleMap triangleMap;
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for(KDTree::KDPrimitiveList::iterator itr = kdTree->_primitiveList.begin();
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itr != kdTree->_primitiveList.end();
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++itr)
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{
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Indices& indices = (*itr)->_indices;
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for(unsigned int i=0; i<indices.size(); i+=3)
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{
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++triangleMap[Triangle(indices[i],indices[i+1], indices[i+2])];
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}
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}
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int totalNumTriangles = triangleMap.size();
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int totalNumReferences = 0;
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for(TriangleMap::iterator tm_itr = triangleMap.begin();
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tm_itr != triangleMap.end();
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++tm_itr)
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{
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totalNumReferences += tm_itr->second;
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}
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std::cout<<"Average number of references = "<<double(totalNumReferences)/double(totalNumTriangles)<<std::endl;
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}
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else
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{
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kdTree->_vertexIndices.reserve(vertices->size());
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for(unsigned int i=0; i<vertices->size(); ++i)
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{
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kdTree->_vertexIndices.push_back(i);
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}
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KDLeaf leaf(0, kdTree->_vertexIndices.size());
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int leafNum = kdTree->addLeaf(leaf);
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osg::BoundingBox bb = kdTree->_bb;
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int nodeNum = dividePoints(*kdTree, bb, leafNum, 0);
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#ifdef VERBOSE_OUTPUT
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osg::notify(osg::NOTICE)<<"Root nodeNum="<<nodeNum<<std::endl;
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#endif
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}
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#ifdef VERBOSE_OUTPUT
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KDTreeTraverser traverser;
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traverser.traverse(*kdTree);
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osg::notify(osg::NOTICE)<<"Final kdTree->_kdNodes.size()="<<kdTree->_kdNodes.size()<<std::endl;
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osg::notify(osg::NOTICE)<<"Final kdTree->_kdLeaves.size()="<<kdTree->_kdLeaves.size()<<std::endl;
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osg::notify(osg::NOTICE)<<"osg::KDTreeBuilder::createKDTree() completed"<<std::endl<<std::endl;
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#endif
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// osg::notify(osg::NOTICE)<<"kdTree->_kdNodes.size()="<<kdTree->_kdNodes.size()<<" estimated size = "<<estimatedSize<<std::endl;
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// osg::notify(osg::NOTICE)<<"kdTree->_kdLeaves.size()="<<kdTree->_kdLeaves.size()<<" estimated size = "<<estimatedSize<<std::endl<<std::endl;
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return kdTree.release();
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}
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void KDTreeBuilder::computeDivisions(KDTree& kdTree)
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{
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osg::Vec3 dimensions(kdTree._bb.xMax()-kdTree._bb.xMin(),
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kdTree._bb.yMax()-kdTree._bb.yMin(),
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kdTree._bb.zMax()-kdTree._bb.zMin());
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#ifdef VERBOSE_OUTPUT
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osg::notify(osg::NOTICE)<<"computeDivisions("<<_maxNumLevels<<") "<<dimensions<< " { "<<std::endl;
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#endif
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kdTree._axisStack.reserve(_maxNumLevels);
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int level = 0;
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for(unsigned int level=0; level<_maxNumLevels; ++level)
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{
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int axis = 0;
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if (dimensions[0]>=dimensions[1])
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{
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if (dimensions[0]>=dimensions[2]) axis = 0;
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else axis = 2;
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}
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else if (dimensions[1]>=dimensions[2]) axis = 1;
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else axis = 2;
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kdTree._axisStack.push_back(axis);
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dimensions[axis] /= 2.0f;
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#ifdef VERBOSE_OUTPUT
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osg::notify(osg::NOTICE)<<" "<<level<<", "<<dimensions<<", "<<axis<<std::endl;
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#endif
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}
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#ifdef VERBOSE_OUTPUT
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osg::notify(osg::NOTICE)<<"}"<<std::endl;
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#endif
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}
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int KDTreeBuilder::divideTriangles(KDTree& kdTree, osg::BoundingBox& bb, int nodeIndex, unsigned int level)
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{
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if (kdTree._axisStack.size()<=level) return nodeIndex;
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int axis = kdTree._axisStack[level];
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#ifdef VERBOSE_OUTPUT
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osg::notify(osg::NOTICE)<<"divideTriangles("<<nodeIndex<<", "<<level<< "), axis="<<axis<<std::endl;
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#endif
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if (nodeIndex>=0)
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{
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#ifdef VERBOSE_OUTPUT
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osg::notify(osg::NOTICE)<<" divide node"<<std::endl;
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#endif
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KDNode& node = kdTree.getNode(nodeIndex);
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return nodeIndex;
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}
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else
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{
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if (kdTree.getPrimitiveLeaf(nodeIndex)->_indices.size()<=_targetNumIndicesPerLeaf) return nodeIndex;
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#ifdef VERBOSE_OUTPUT
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osg::notify(osg::NOTICE)<<" divide leaf"<<std::endl;
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#endif
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int nodeNum = kdTree.addNode(KDNode());
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float original_min = bb._min[axis];
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float original_max = bb._max[axis];
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float mid = (original_min+original_max)*0.5f;
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{
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KDPrimitiveLeaf* leaf = kdTree.getPrimitiveLeaf(nodeIndex);
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osg::Vec3Array* vertices = kdTree._vertices.get();
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Indices& indices = leaf->_indices;
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#ifdef VERBOSE_OUTPUT
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osg::notify(osg::NOTICE)<<" divide leaf->_indices.size()="<<leaf->_indices.size()<<std::endl;
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#endif
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osg::ref_ptr<KDPrimitiveLeaf> leftLeaf = createKDPrimitiveLeaf();
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osg::ref_ptr<KDPrimitiveLeaf> rightLeaf = createKDPrimitiveLeaf();
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for(int i = 0; i<indices.size(); )
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{
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int numLeft = 0;
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int numRight = 0;
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int i1 = indices[i++];
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if ((*vertices)[i1][axis]<=mid) ++numLeft;
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else ++numRight;
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int i2 = indices[i++];
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if ((*vertices)[i2][axis]<=mid) ++numLeft;
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else ++numRight;
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int i3 = indices[i++];
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if ((*vertices)[i3][axis]<=mid) ++numLeft;
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else ++numRight;
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if (numLeft>0)
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{
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leftLeaf->_indices.push_back(i1); leftLeaf->_indices.push_back(i2);
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leftLeaf->_indices.push_back(i3);
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}
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if (numRight>0)
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{
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rightLeaf->_indices.push_back(i1);
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rightLeaf->_indices.push_back(i2);
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rightLeaf->_indices.push_back(i3);
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}
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#if 0
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if (numRight>0 && numLeft>0)
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{
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std::cout<<"In both"<<std::endl;
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}
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else
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{
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std::cout<<"In one"<<std::endl;
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}
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#endif
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}
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disposeKDPrimitiveLeaf(leaf);
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if (leftLeaf->_indices.empty())
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{
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#ifdef VERBOSE_OUTPUT
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osg::notify(osg::NOTICE)<<"LeftLeaf empty"<<std::endl;
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#endif
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kdTree.getNode(nodeNum).first = 0;
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kdTree.getNode(nodeNum).second = kdTree.replacePrimitiveLeaf(nodeIndex, rightLeaf.get());
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}
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else if (rightLeaf->_indices.empty())
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{
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#ifdef VERBOSE_OUTPUT
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osg::notify(osg::NOTICE)<<"RightLeaf empty"<<std::endl;
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#endif
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kdTree.getNode(nodeNum).first = kdTree.replacePrimitiveLeaf(nodeIndex, leftLeaf.get());
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kdTree.getNode(nodeNum).second = 0;
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}
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else
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{
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kdTree.getNode(nodeNum).first = kdTree.replacePrimitiveLeaf(nodeIndex, leftLeaf.get());
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kdTree.getNode(nodeNum).second = kdTree.addPrimitiveLeaf(rightLeaf.get());
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}
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}
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int originalLeftChildIndex = kdTree.getNode(nodeNum).first;
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int originalRightChildIndex = kdTree.getNode(nodeNum).second;
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float restore = bb._max[axis];
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bb._max[axis] = mid;
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//osg::notify(osg::NOTICE)<<" divide leftLeaf "<<kdTree.getNode(nodeNum).first<<std::endl;
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int leftChildIndex = divideTriangles(kdTree, bb, originalLeftChildIndex, level+1);
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bb._max[axis] = restore;
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restore = bb._min[axis];
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bb._min[axis] = mid;
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//osg::notify(osg::NOTICE)<<" divide rightLeaf "<<kdTree.getNode(nodeNum).second<<std::endl;
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int rightChildIndex = divideTriangles(kdTree, bb, originalRightChildIndex, level+1);
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bb._min[axis] = restore;
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kdTree.getNode(nodeNum).first = leftChildIndex;
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kdTree.getNode(nodeNum).second = rightChildIndex;
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return nodeNum;
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}
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}
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int KDTreeBuilder::dividePoints(KDTree& kdTree, osg::BoundingBox& bb, int nodeIndex, unsigned int level)
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{
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if (kdTree._axisStack.size()<=level) return nodeIndex;
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int axis = kdTree._axisStack[level];
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#ifdef VERBOSE_OUTPUT
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//osg::notify(osg::NOTICE)<<"divide("<<nodeIndex<<", "<<level<< "), axis="<<axis<<std::endl;
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#endif
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if (nodeIndex>=0)
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{
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#ifdef VERBOSE_OUTPUT
|
|
||||||
osg::notify(osg::NOTICE)<<" divide node"<<std::endl;
|
|
||||||
#endif
|
|
||||||
KDNode& node = kdTree.getNode(nodeIndex);
|
|
||||||
return nodeIndex;
|
|
||||||
}
|
|
||||||
else
|
|
||||||
{
|
|
||||||
|
|
||||||
if (kdTree.getLeaf(nodeIndex).second<=_targetNumVerticesPerLeaf) return nodeIndex;
|
|
||||||
|
|
||||||
//osg::notify(osg::NOTICE)<<" divide leaf"<<std::endl;
|
|
||||||
|
|
||||||
int nodeNum = kdTree.addNode(KDNode());
|
|
||||||
|
|
||||||
float original_min = bb._min[axis];
|
|
||||||
float original_max = bb._max[axis];
|
|
||||||
|
|
||||||
float mid = (original_min+original_max)*0.5f;
|
|
||||||
|
|
||||||
{
|
|
||||||
KDLeaf& leaf = kdTree.getLeaf(nodeIndex);
|
|
||||||
|
|
||||||
osg::Vec3Array* vertices = kdTree._vertices.get();
|
|
||||||
|
|
||||||
//osg::notify(osg::NOTICE)<<" divide leaf->_vertexIndices.size()="<<leaf->_vertexIndices.size()<<std::endl;
|
|
||||||
|
|
||||||
int end = leaf.first+leaf.second-1;
|
|
||||||
int left = leaf.first;
|
|
||||||
int right = leaf.first+leaf.second-1;
|
|
||||||
|
|
||||||
while(left<right)
|
|
||||||
{
|
|
||||||
while(left<right && ((*vertices)[kdTree._vertexIndices[left]])[axis]<=mid) { ++left; }
|
|
||||||
|
|
||||||
while(left<right && ((*vertices)[kdTree._vertexIndices[right]])[axis]>mid) { --right; }
|
|
||||||
|
|
||||||
if (left<right)
|
|
||||||
{
|
|
||||||
std::swap(kdTree._vertexIndices[left], kdTree._vertexIndices[right]);
|
|
||||||
++left;
|
|
||||||
--right;
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
if (left==right)
|
|
||||||
{
|
|
||||||
if (((*vertices)[kdTree._vertexIndices[left]])[axis]<=mid) ++left;
|
|
||||||
else --right;
|
|
||||||
}
|
|
||||||
|
|
||||||
KDLeaf leftLeaf(leaf.first, (right-leaf.first)+1);
|
|
||||||
KDLeaf rightLeaf(left, (end-left)+1);
|
|
||||||
|
|
||||||
#if 0
|
|
||||||
osg::notify(osg::NOTICE)<<"In leaf.first ="<<leaf.first <<" leaf.second ="<<leaf.second<<std::endl;
|
|
||||||
osg::notify(osg::NOTICE)<<" leftLeaf.first ="<<leftLeaf.first <<" leftLeaf.second ="<<leftLeaf.second<<std::endl;
|
|
||||||
osg::notify(osg::NOTICE)<<" rightLeaf.first="<<rightLeaf.first<<" rightLeaf.second="<<rightLeaf.second<<std::endl;
|
|
||||||
osg::notify(osg::NOTICE)<<" left="<<left<<" right="<<right<<std::endl;
|
|
||||||
|
|
||||||
if (leaf.second != (leftLeaf.second +rightLeaf.second))
|
|
||||||
{
|
|
||||||
osg::notify(osg::NOTICE)<<"*** Error in size, leaf.second="<<leaf.second
|
|
||||||
<<", leftLeaf.second="<<leftLeaf.second
|
|
||||||
<<", rightLeaf.second="<<rightLeaf.second<<std::endl;
|
|
||||||
}
|
|
||||||
else
|
|
||||||
{
|
|
||||||
osg::notify(osg::NOTICE)<<"Size OK, leaf.second="<<leaf.second
|
|
||||||
<<", leftLeaf.second="<<leftLeaf.second
|
|
||||||
<<", rightLeaf.second="<<rightLeaf.second<<std::endl;
|
|
||||||
}
|
|
||||||
#endif
|
|
||||||
if (leftLeaf.second<=0)
|
|
||||||
{
|
|
||||||
//osg::notify(osg::NOTICE)<<"LeftLeaf empty"<<std::endl;
|
|
||||||
kdTree.getNode(nodeNum).first = 0;
|
|
||||||
kdTree.getNode(nodeNum).second = kdTree.replaceLeaf(nodeIndex, rightLeaf);
|
|
||||||
}
|
|
||||||
else if (rightLeaf.second<=0)
|
|
||||||
{
|
|
||||||
//osg::notify(osg::NOTICE)<<"RightLeaf empty"<<std::endl;
|
|
||||||
kdTree.getNode(nodeNum).first = kdTree.replaceLeaf(nodeIndex, leftLeaf);
|
|
||||||
kdTree.getNode(nodeNum).second = 0;
|
|
||||||
}
|
|
||||||
else
|
|
||||||
{
|
|
||||||
kdTree.getNode(nodeNum).first = kdTree.replaceLeaf(nodeIndex, leftLeaf);
|
|
||||||
kdTree.getNode(nodeNum).second = kdTree.addLeaf(rightLeaf);
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
|
|
||||||
int originalLeftChildIndex = kdTree.getNode(nodeNum).first;
|
|
||||||
int originalRightChildIndex = kdTree.getNode(nodeNum).second;
|
|
||||||
|
|
||||||
|
|
||||||
float restore = bb._max[axis];
|
|
||||||
bb._max[axis] = mid;
|
|
||||||
|
|
||||||
//osg::notify(osg::NOTICE)<<" divide leftLeaf "<<kdTree.getNode(nodeNum).first<<std::endl;
|
|
||||||
int leftChildIndex = dividePoints(kdTree, bb, originalLeftChildIndex, level+1);
|
|
||||||
|
|
||||||
bb._max[axis] = restore;
|
|
||||||
|
|
||||||
restore = bb._min[axis];
|
|
||||||
bb._min[axis] = mid;
|
|
||||||
|
|
||||||
//osg::notify(osg::NOTICE)<<" divide rightLeaf "<<kdTree.getNode(nodeNum).second<<std::endl;
|
|
||||||
int rightChildIndex = dividePoints(kdTree, bb, originalRightChildIndex, level+1);
|
|
||||||
|
|
||||||
bb._min[axis] = restore;
|
|
||||||
|
|
||||||
kdTree.getNode(nodeNum).first = leftChildIndex;
|
|
||||||
kdTree.getNode(nodeNum).second = rightChildIndex;
|
|
||||||
|
|
||||||
return nodeNum;
|
|
||||||
}
|
|
||||||
|
|
||||||
|
|
||||||
}
|
|
||||||
|
|
||||||
}
|
|
||||||
@ -1,356 +0,0 @@
|
|||||||
/* OpenSceneGraph example, osgintersection.
|
|
||||||
*
|
|
||||||
* Permission is hereby granted, free of charge, to any person obtaining a copy
|
|
||||||
* of this software and associated documentation files (the "Software"), to deal
|
|
||||||
* in the Software without restriction, including without limitation the rights
|
|
||||||
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
|
||||||
* copies of the Software, and to permit persons to whom the Software is
|
|
||||||
* furnished to do so, subject to the following conditions:
|
|
||||||
*
|
|
||||||
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
|
||||||
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
||||||
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
|
||||||
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
|
||||||
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
|
||||||
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
|
|
||||||
* THE SOFTWARE.
|
|
||||||
*/
|
|
||||||
|
|
||||||
#ifndef FIXIEDDIVISION_H
|
|
||||||
#define FIXIEDDIVISION_H
|
|
||||||
|
|
||||||
|
|
||||||
#include <osgDB/ReadFile>
|
|
||||||
|
|
||||||
#include <osg/ArgumentParser>
|
|
||||||
#include <osg/ApplicationUsage>
|
|
||||||
#include <osg/Timer>
|
|
||||||
#include <osg/CoordinateSystemNode>
|
|
||||||
#include <osg/Notify>
|
|
||||||
#include <osg/io_utils>
|
|
||||||
#include <osg/Geometry>
|
|
||||||
#include <osg/TriangleIndexFunctor>
|
|
||||||
|
|
||||||
|
|
||||||
#include <osgUtil/IntersectionVisitor>
|
|
||||||
#include <osgUtil/LineSegmentIntersector>
|
|
||||||
#include <osgUtil/UpdateVisitor>
|
|
||||||
|
|
||||||
#include <osgSim/LineOfSight>
|
|
||||||
#include <osgSim/HeightAboveTerrain>
|
|
||||||
#include <osgSim/ElevationSlice>
|
|
||||||
|
|
||||||
#include <iostream>
|
|
||||||
|
|
||||||
|
|
||||||
namespace fixeddivision
|
|
||||||
{
|
|
||||||
|
|
||||||
typedef int value_type;
|
|
||||||
typedef std::vector< value_type > Indices;
|
|
||||||
|
|
||||||
// #define VERBOSE_OUTPUT
|
|
||||||
|
|
||||||
typedef std::pair< value_type, value_type> KDNode;
|
|
||||||
typedef std::pair< value_type, value_type> KDLeaf;
|
|
||||||
|
|
||||||
struct Triangle
|
|
||||||
{
|
|
||||||
Triangle(unsigned int p1, unsigned int p2, unsigned int p3):
|
|
||||||
_p1(p1), _p2(p2), _p3(p3) {}
|
|
||||||
|
|
||||||
bool operator < (const Triangle& rhs) const
|
|
||||||
{
|
|
||||||
if (_p1<rhs._p1) return true;
|
|
||||||
if (_p1>rhs._p1) return false;
|
|
||||||
if (_p2<rhs._p2) return true;
|
|
||||||
if (_p2>rhs._p2) return false;
|
|
||||||
return _p3<rhs._p3;
|
|
||||||
}
|
|
||||||
|
|
||||||
unsigned int _p1;
|
|
||||||
unsigned int _p2;
|
|
||||||
unsigned int _p3;
|
|
||||||
};
|
|
||||||
|
|
||||||
|
|
||||||
class KDPrimitiveLeaf : public osg::Referenced
|
|
||||||
{
|
|
||||||
public:
|
|
||||||
|
|
||||||
KDPrimitiveLeaf() {}
|
|
||||||
|
|
||||||
Indices _indices;
|
|
||||||
|
|
||||||
protected:
|
|
||||||
|
|
||||||
virtual ~KDPrimitiveLeaf() {}
|
|
||||||
};
|
|
||||||
|
|
||||||
class KDTree : public osg::Shape
|
|
||||||
{
|
|
||||||
public:
|
|
||||||
|
|
||||||
|
|
||||||
KDTree() {}
|
|
||||||
|
|
||||||
KDTree(const KDTree& rhs, const osg::CopyOp& copyop=osg::CopyOp::SHALLOW_COPY):
|
|
||||||
Shape(rhs,copyop) {}
|
|
||||||
|
|
||||||
META_Shape(osg, KDTree)
|
|
||||||
|
|
||||||
|
|
||||||
typedef std::vector< unsigned int > AxisStack;
|
|
||||||
typedef std::vector< KDNode > KDNodeList;
|
|
||||||
|
|
||||||
typedef std::vector< KDLeaf > KDLeafList;
|
|
||||||
|
|
||||||
/// note, leafNum is negative to distinguish from nodeNum
|
|
||||||
int addLeaf(const KDLeaf& leaf) { int num = _kdLeaves.size(); _kdLeaves.push_back(leaf); return -(num+1); }
|
|
||||||
|
|
||||||
int replaceLeaf(int leafNum, const KDLeaf& leaf)
|
|
||||||
{
|
|
||||||
int num = -leafNum-1;
|
|
||||||
|
|
||||||
if (num>_kdLeaves.size()-1)
|
|
||||||
{
|
|
||||||
osg::notify(osg::NOTICE)<<"Warning: replaceChild("<<leafNum<<", leaf), num = "<<num<<" _kdLeaves.size()="<<_kdLeaves.size()<<std::endl;
|
|
||||||
return leafNum;
|
|
||||||
}
|
|
||||||
|
|
||||||
_kdLeaves[num] = leaf; return leafNum;
|
|
||||||
}
|
|
||||||
|
|
||||||
/// note, leafNum is negative to distinguish from nodeNum
|
|
||||||
KDLeaf& getLeaf(int leafNum)
|
|
||||||
{
|
|
||||||
int num = -leafNum-1;
|
|
||||||
if (num<0 || num>_kdLeaves.size()-1)
|
|
||||||
{
|
|
||||||
osg::notify(osg::NOTICE)<<"Warning: getLeaf("<<leafNum<<", num = "<<num<<") _kdLeaves.size()="<<_kdLeaves.size()<<std::endl;
|
|
||||||
}
|
|
||||||
|
|
||||||
return _kdLeaves[num];
|
|
||||||
}
|
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
/// note, leafNum is negative to distinguish from nodeNum
|
|
||||||
int addPrimitiveLeaf(KDPrimitiveLeaf* leaf) { int num = _primitiveList.size(); _primitiveList.push_back(leaf); return -(num+1); }
|
|
||||||
|
|
||||||
int replacePrimitiveLeaf(int leafNum, KDPrimitiveLeaf* leaf)
|
|
||||||
{
|
|
||||||
int num = -leafNum-1;
|
|
||||||
|
|
||||||
if (num>_primitiveList.size()-1)
|
|
||||||
{
|
|
||||||
osg::notify(osg::NOTICE)<<"Warning: replaceChild("<<leafNum<<", leaf), num = "<<num<<" _primitiveList.size()="<<_primitiveList.size()<<std::endl;
|
|
||||||
return leafNum;
|
|
||||||
}
|
|
||||||
|
|
||||||
_primitiveList[num] = leaf; return leafNum;
|
|
||||||
}
|
|
||||||
|
|
||||||
|
|
||||||
/// note, leafNum is negative to distinguish from nodeNum
|
|
||||||
KDPrimitiveLeaf* getPrimitiveLeaf(int leafNum)
|
|
||||||
{
|
|
||||||
int num = -leafNum-1;
|
|
||||||
if (num<0 || num>_primitiveList.size()-1)
|
|
||||||
{
|
|
||||||
osg::notify(osg::NOTICE)<<"Warning: getLeaf("<<leafNum<<", num = "<<num<<") _primitiveList.size()="<<_primitiveList.size()<<std::endl;
|
|
||||||
}
|
|
||||||
|
|
||||||
return _primitiveList[num].get();
|
|
||||||
}
|
|
||||||
|
|
||||||
int addNode(const KDNode& node)
|
|
||||||
{
|
|
||||||
int num = _kdNodes.size();
|
|
||||||
_kdNodes.push_back(node);
|
|
||||||
return num;
|
|
||||||
}
|
|
||||||
|
|
||||||
/// note, nodeNum is positive to distinguish from leftNum
|
|
||||||
KDNode& getNode(int nodeNum)
|
|
||||||
{
|
|
||||||
if (nodeNum<0 || nodeNum>_kdNodes.size()-1)
|
|
||||||
{
|
|
||||||
osg::notify(osg::NOTICE)<<"Warning: getNode("<<nodeNum<<") _kdNodes.size()="<<_kdNodes.size()<<std::endl;
|
|
||||||
}
|
|
||||||
return _kdNodes[nodeNum];
|
|
||||||
}
|
|
||||||
|
|
||||||
|
|
||||||
osg::observer_ptr<osg::Geometry> _geometry;
|
|
||||||
|
|
||||||
osg::BoundingBox _bb;
|
|
||||||
|
|
||||||
AxisStack _axisStack;
|
|
||||||
KDNodeList _kdNodes;
|
|
||||||
KDLeafList _kdLeaves;
|
|
||||||
|
|
||||||
osg::ref_ptr<osg::Vec3Array> _vertices;
|
|
||||||
Indices _vertexIndices;
|
|
||||||
|
|
||||||
typedef std::vector< osg::ref_ptr<KDPrimitiveLeaf> > KDPrimitiveList;
|
|
||||||
KDPrimitiveList _primitiveList;
|
|
||||||
};
|
|
||||||
|
|
||||||
class KDTreeTraverser
|
|
||||||
{
|
|
||||||
public:
|
|
||||||
|
|
||||||
|
|
||||||
std::ostream& output(unsigned int level)
|
|
||||||
{
|
|
||||||
for(unsigned int i=0; i<level; ++i)
|
|
||||||
{
|
|
||||||
osg::notify(osg::NOTICE)<<" ";
|
|
||||||
}
|
|
||||||
return osg::notify(osg::NOTICE);
|
|
||||||
}
|
|
||||||
|
|
||||||
|
|
||||||
void traverse(KDTree& tree, KDLeaf& leaf, unsigned int level)
|
|
||||||
{
|
|
||||||
output(level)<<"leaf("<<level<<") { ";
|
|
||||||
|
|
||||||
unsigned int end = leaf.first+leaf.second;
|
|
||||||
for(unsigned int i=leaf.first; i<end; ++i)
|
|
||||||
{
|
|
||||||
if (i==leaf.first) osg::notify(osg::NOTICE)<<tree._vertexIndices[i];
|
|
||||||
else osg::notify(osg::NOTICE)<<", "<<tree._vertexIndices[i];
|
|
||||||
}
|
|
||||||
|
|
||||||
osg::notify(osg::NOTICE)<<"}"<<std::endl;;
|
|
||||||
|
|
||||||
}
|
|
||||||
|
|
||||||
void traverse(KDTree& tree, KDPrimitiveLeaf& leaf, unsigned int level)
|
|
||||||
{
|
|
||||||
output(level)<<"leaf("<<level<<") size()="<<leaf._indices.size()<<"{ ";
|
|
||||||
|
|
||||||
for(unsigned int i=0; i<leaf._indices.size(); ++i)
|
|
||||||
{
|
|
||||||
if (i==0) osg::notify(osg::NOTICE)<<leaf._indices[i];
|
|
||||||
else osg::notify(osg::NOTICE)<<", "<<leaf._indices[i];
|
|
||||||
}
|
|
||||||
|
|
||||||
osg::notify(osg::NOTICE)<<"}"<<std::endl;;
|
|
||||||
|
|
||||||
}
|
|
||||||
|
|
||||||
void traverse(KDTree& tree, value_type nodeIndex, unsigned int level)
|
|
||||||
{
|
|
||||||
output(level)<<"traverse("<<nodeIndex<<", "<< level<<") { "<<std::endl;
|
|
||||||
|
|
||||||
if (nodeIndex>=0)
|
|
||||||
{
|
|
||||||
KDNode& node = tree._kdNodes[nodeIndex];
|
|
||||||
if (node.first) traverse(tree,node.first,level+1);
|
|
||||||
else output(level+1)<<"empty left child()"<<std::endl;
|
|
||||||
|
|
||||||
if (node.second) traverse(tree,node.second,level+1);
|
|
||||||
else output(level+1)<<"empty right child()"<<std::endl;
|
|
||||||
}
|
|
||||||
else
|
|
||||||
{
|
|
||||||
value_type leafIndex = -nodeIndex-1;
|
|
||||||
|
|
||||||
if (leafIndex<tree._primitiveList.size())
|
|
||||||
{
|
|
||||||
KDPrimitiveLeaf& leaf = *(tree._primitiveList[leafIndex]);
|
|
||||||
traverse(tree, leaf, level);
|
|
||||||
}
|
|
||||||
else
|
|
||||||
{
|
|
||||||
KDLeaf& leaf = tree._kdLeaves[leafIndex];
|
|
||||||
traverse(tree, leaf, level);
|
|
||||||
}
|
|
||||||
|
|
||||||
}
|
|
||||||
|
|
||||||
output(level)<<"}"<<std::endl;;
|
|
||||||
}
|
|
||||||
|
|
||||||
|
|
||||||
void traverse(KDTree& tree)
|
|
||||||
{
|
|
||||||
osg::notify(osg::NOTICE)<<"traverse(tree)"<<std::endl;
|
|
||||||
if (!tree._kdNodes.empty())
|
|
||||||
{
|
|
||||||
traverse(tree,0,0);
|
|
||||||
}
|
|
||||||
else if (!tree._kdLeaves.empty())
|
|
||||||
{
|
|
||||||
traverse(tree, tree._kdLeaves.front(), 0);
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
};
|
|
||||||
|
|
||||||
class KDTreeBuilder : public osg::NodeVisitor
|
|
||||||
{
|
|
||||||
public:
|
|
||||||
|
|
||||||
KDTreeBuilder():
|
|
||||||
osg::NodeVisitor(osg::NodeVisitor::TRAVERSE_ALL_CHILDREN),
|
|
||||||
_maxNumLevels(16),
|
|
||||||
_targetNumVerticesPerLeaf(8),
|
|
||||||
_targetNumIndicesPerLeaf(15),
|
|
||||||
_numVerticesProcessed(0),
|
|
||||||
_processTriangles(true)
|
|
||||||
{
|
|
||||||
}
|
|
||||||
|
|
||||||
|
|
||||||
void apply(osg::Geode& geode)
|
|
||||||
{
|
|
||||||
for(unsigned int i=0; i<geode.getNumDrawables(); ++i)
|
|
||||||
{
|
|
||||||
osg::Geometry* geom = geode.getDrawable(i)->asGeometry();
|
|
||||||
if (geom)
|
|
||||||
{
|
|
||||||
geom->setShape(createKDTree(geom));
|
|
||||||
}
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
KDTree* createKDTree(osg::Geometry* geometry);
|
|
||||||
|
|
||||||
void computeDivisions(KDTree& kdTree);
|
|
||||||
|
|
||||||
int divideTriangles(KDTree& kdTree, osg::BoundingBox& bb, int nodeIndex, unsigned int level);
|
|
||||||
int dividePoints(KDTree& kdTree, osg::BoundingBox& bb, int nodeIndex, unsigned int level);
|
|
||||||
|
|
||||||
unsigned int _maxNumLevels;
|
|
||||||
unsigned int _targetNumVerticesPerLeaf;
|
|
||||||
unsigned int _targetNumIndicesPerLeaf;
|
|
||||||
|
|
||||||
unsigned int _numVerticesProcessed;
|
|
||||||
bool _processTriangles;
|
|
||||||
|
|
||||||
inline void disposeKDPrimitiveLeaf(KDPrimitiveLeaf* leaf)
|
|
||||||
{
|
|
||||||
leaf->_indices.clear();
|
|
||||||
_leafRecycleList.push_back(leaf);
|
|
||||||
}
|
|
||||||
|
|
||||||
inline KDPrimitiveLeaf* createKDPrimitiveLeaf()
|
|
||||||
{
|
|
||||||
if (_leafRecycleList.empty()) return new KDPrimitiveLeaf;
|
|
||||||
osg::ref_ptr<KDPrimitiveLeaf> leaf = _leafRecycleList.back();
|
|
||||||
_leafRecycleList.pop_back();
|
|
||||||
return leaf.release();
|
|
||||||
}
|
|
||||||
|
|
||||||
typedef std::list< osg::ref_ptr<KDPrimitiveLeaf> > LeafRecyleList;
|
|
||||||
LeafRecyleList _leafRecycleList;
|
|
||||||
|
|
||||||
};
|
|
||||||
|
|
||||||
|
|
||||||
}
|
|
||||||
|
|
||||||
#endif
|
|
||||||
@ -39,11 +39,10 @@
|
|||||||
|
|
||||||
#include <osgViewer/Viewer>
|
#include <osgViewer/Viewer>
|
||||||
|
|
||||||
#include "fixeddivision.h"
|
|
||||||
#include "variabledivision.h"
|
|
||||||
|
|
||||||
#include <osg/KdTree>
|
#include <osg/KdTree>
|
||||||
|
|
||||||
|
#include <iostream>
|
||||||
|
|
||||||
int main(int argc, char **argv)
|
int main(int argc, char **argv)
|
||||||
{
|
{
|
||||||
// use an ArgumentParser object to manage the program arguments.
|
// use an ArgumentParser object to manage the program arguments.
|
||||||
@ -51,12 +50,9 @@ int main(int argc, char **argv)
|
|||||||
|
|
||||||
int maxNumLevels = 16;
|
int maxNumLevels = 16;
|
||||||
int targetNumIndicesPerLeaf = 16;
|
int targetNumIndicesPerLeaf = 16;
|
||||||
bool processTriangles = true;
|
|
||||||
|
|
||||||
while (arguments.read("--max", maxNumLevels)) {}
|
while (arguments.read("--max", maxNumLevels)) {}
|
||||||
while (arguments.read("--leaf", targetNumIndicesPerLeaf)) {}
|
while (arguments.read("--leaf", targetNumIndicesPerLeaf)) {}
|
||||||
while (arguments.read("--points")) processTriangles = false;
|
|
||||||
while (arguments.read("--triangles")) processTriangles = true;
|
|
||||||
|
|
||||||
osgDB::Registry::instance()->setBuildKdTreesHint(osgDB::ReaderWriter::Options::BUILD_KDTREES);
|
osgDB::Registry::instance()->setBuildKdTreesHint(osgDB::ReaderWriter::Options::BUILD_KDTREES);
|
||||||
|
|
||||||
@ -68,56 +64,7 @@ int main(int argc, char **argv)
|
|||||||
return 0;
|
return 0;
|
||||||
}
|
}
|
||||||
|
|
||||||
|
osgViewer::Viewer viewer;
|
||||||
osgUtil::UpdateVisitor updateVisitor;
|
viewer.setSceneData(scene.get());
|
||||||
updateVisitor.setFrameStamp(new osg::FrameStamp);
|
return viewer.run();
|
||||||
scene->accept(updateVisitor);
|
|
||||||
scene->getBound();
|
|
||||||
|
|
||||||
if (arguments.read("--fd"))
|
|
||||||
{
|
|
||||||
fixeddivision::KDTreeBuilder builder;
|
|
||||||
|
|
||||||
builder._maxNumLevels = maxNumLevels;
|
|
||||||
builder._targetNumIndicesPerLeaf = targetNumIndicesPerLeaf;
|
|
||||||
builder._processTriangles = processTriangles;
|
|
||||||
|
|
||||||
|
|
||||||
osg::Timer_t start = osg::Timer::instance()->tick();
|
|
||||||
|
|
||||||
|
|
||||||
scene->accept(builder);
|
|
||||||
|
|
||||||
osg::Timer_t end = osg::Timer::instance()->tick();
|
|
||||||
double time = osg::Timer::instance()->delta_s(start,end);
|
|
||||||
osg::notify(osg::NOTICE)<<"Time to build "<<time*1000.0<<"ms "<<builder._numVerticesProcessed<<std::endl;
|
|
||||||
osg::notify(osg::NOTICE)<<"build speed "<<(double(builder._numVerticesProcessed)/time)/1000000.0<<"M vertices per second"<<std::endl;
|
|
||||||
}
|
|
||||||
else if (arguments.read("--vd"))
|
|
||||||
{
|
|
||||||
variabledivision::KDTreeBuilder builder;
|
|
||||||
|
|
||||||
builder._maxNumLevels = maxNumLevels;
|
|
||||||
builder._targetNumTrianglesPerLeaf = targetNumIndicesPerLeaf;
|
|
||||||
builder._processTriangles = processTriangles;
|
|
||||||
|
|
||||||
|
|
||||||
osg::Timer_t start = osg::Timer::instance()->tick();
|
|
||||||
|
|
||||||
|
|
||||||
scene->accept(builder);
|
|
||||||
|
|
||||||
osg::Timer_t end = osg::Timer::instance()->tick();
|
|
||||||
double time = osg::Timer::instance()->delta_s(start,end);
|
|
||||||
osg::notify(osg::NOTICE)<<"Time to build "<<time*1000.0<<"ms "<<builder._numVerticesProcessed<<std::endl;
|
|
||||||
osg::notify(osg::NOTICE)<<"build speed "<<(double(builder._numVerticesProcessed)/time)/1000000.0<<"M vertices per second"<<std::endl;
|
|
||||||
}
|
|
||||||
else
|
|
||||||
{
|
|
||||||
osgViewer::Viewer viewer;
|
|
||||||
viewer.setSceneData(scene.get());
|
|
||||||
return viewer.run();
|
|
||||||
}
|
|
||||||
|
|
||||||
return 0;
|
|
||||||
}
|
}
|
||||||
|
|||||||
@ -1,309 +0,0 @@
|
|||||||
/* OpenSceneGraph example, osgintersection.
|
|
||||||
*
|
|
||||||
* Permission is hereby granted, free of charge, to any person obtaining a copy
|
|
||||||
* of this software and associated documentation files (the "Software"), to deal
|
|
||||||
* in the Software without restriction, including without limitation the rights
|
|
||||||
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
|
||||||
* copies of the Software, and to permit persons to whom the Software is
|
|
||||||
* furnished to do so, subject to the following conditions:
|
|
||||||
*
|
|
||||||
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
|
||||||
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
||||||
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
|
||||||
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
|
||||||
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
|
||||||
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
|
|
||||||
* THE SOFTWARE.
|
|
||||||
*/
|
|
||||||
|
|
||||||
|
|
||||||
#include "variabledivision.h"
|
|
||||||
|
|
||||||
namespace variabledivision
|
|
||||||
{
|
|
||||||
|
|
||||||
struct TriangleIndicesCollector
|
|
||||||
{
|
|
||||||
TriangleIndicesCollector():
|
|
||||||
_kdTree(0)
|
|
||||||
{
|
|
||||||
}
|
|
||||||
|
|
||||||
inline void operator () (unsigned int p1, unsigned int p2, unsigned int p3)
|
|
||||||
{
|
|
||||||
unsigned int i = _kdTree->_triangles.size();
|
|
||||||
_kdTree->_triangles.push_back(Triangle(p1,p2,p3));
|
|
||||||
|
|
||||||
osg::BoundingBox bb;
|
|
||||||
bb.expandBy((*(_kdTree->_vertices))[p1]);
|
|
||||||
bb.expandBy((*(_kdTree->_vertices))[p2]);
|
|
||||||
bb.expandBy((*(_kdTree->_vertices))[p3]);
|
|
||||||
_kdTree->_boundingBoxes.push_back(bb);
|
|
||||||
|
|
||||||
_kdTree->_centers.push_back(bb.center());
|
|
||||||
|
|
||||||
_kdTree->_primitiveIndices.push_back(i);
|
|
||||||
|
|
||||||
}
|
|
||||||
|
|
||||||
KDTree* _kdTree;
|
|
||||||
|
|
||||||
};
|
|
||||||
|
|
||||||
KDTree* KDTreeBuilder::createKDTree(osg::Geometry* geometry)
|
|
||||||
{
|
|
||||||
#ifdef VERBOSE_OUTPUT
|
|
||||||
osg::notify(osg::NOTICE)<<"osg::KDTreeBuilder::createKDTree()"<<std::endl;
|
|
||||||
#endif
|
|
||||||
|
|
||||||
osg::Vec3Array* vertices = dynamic_cast<osg::Vec3Array*>(geometry->getVertexArray());
|
|
||||||
if (!vertices) return 0;
|
|
||||||
|
|
||||||
if (vertices->size() <= _targetNumTrianglesPerLeaf) return 0;
|
|
||||||
|
|
||||||
osg::ref_ptr<KDTree> kdTree = new KDTree;
|
|
||||||
kdTree->_geometry = geometry;
|
|
||||||
kdTree->_bb = kdTree->_geometry->getBound();
|
|
||||||
kdTree->_vertices = vertices;
|
|
||||||
|
|
||||||
unsigned int estimatedSize = (unsigned int)(2.0*float(vertices->size())/float(_targetNumTrianglesPerLeaf));
|
|
||||||
|
|
||||||
#ifdef VERBOSE_OUTPUT
|
|
||||||
osg::notify(osg::NOTICE)<<"kdTree->_kdNodes.reserve()="<<estimatedSize<<std::endl<<std::endl;
|
|
||||||
#endif
|
|
||||||
|
|
||||||
kdTree->_kdNodes.reserve(estimatedSize);
|
|
||||||
kdTree->_kdLeaves.reserve(estimatedSize);
|
|
||||||
|
|
||||||
computeDivisions(*kdTree);
|
|
||||||
|
|
||||||
|
|
||||||
_numVerticesProcessed += vertices->size();
|
|
||||||
|
|
||||||
unsigned int estimatedNumTriangles = vertices->size()*2;
|
|
||||||
kdTree->_primitiveIndices.reserve(estimatedNumTriangles);
|
|
||||||
kdTree->_boundingBoxes.reserve(estimatedNumTriangles);
|
|
||||||
kdTree->_triangles.reserve(estimatedNumTriangles);
|
|
||||||
kdTree->_centers.reserve(estimatedNumTriangles);
|
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
osg::TriangleIndexFunctor<TriangleIndicesCollector> collectTriangleIndices;
|
|
||||||
collectTriangleIndices._kdTree = kdTree.get();
|
|
||||||
geometry->accept(collectTriangleIndices);
|
|
||||||
|
|
||||||
kdTree->_primitiveIndices.reserve(vertices->size());
|
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
KDLeaf leaf(0, kdTree->_primitiveIndices.size());
|
|
||||||
|
|
||||||
int leafNum = kdTree->addLeaf(leaf);
|
|
||||||
|
|
||||||
osg::BoundingBox bb = kdTree->_bb;
|
|
||||||
int nodeNum = divide(*kdTree, bb, leafNum, 0);
|
|
||||||
|
|
||||||
#ifdef VERBOSE_OUTPUT
|
|
||||||
osg::notify(osg::NOTICE)<<"Root nodeNum="<<nodeNum<<std::endl;
|
|
||||||
#endif
|
|
||||||
|
|
||||||
|
|
||||||
#ifdef VERBOSE_OUTPUT
|
|
||||||
|
|
||||||
KDTreeTraverser traverser;
|
|
||||||
traverser.traverse(*kdTree);
|
|
||||||
|
|
||||||
|
|
||||||
osg::notify(osg::NOTICE)<<"Final kdTree->_kdNodes.size()="<<kdTree->_kdNodes.size()<<std::endl;
|
|
||||||
osg::notify(osg::NOTICE)<<"Final kdTree->_kdLeaves.size()="<<kdTree->_kdLeaves.size()<<std::endl;
|
|
||||||
|
|
||||||
osg::notify(osg::NOTICE)<<"osg::KDTreeBuilder::createKDTree() completed"<<std::endl<<std::endl;
|
|
||||||
#endif
|
|
||||||
|
|
||||||
// osg::notify(osg::NOTICE)<<"kdTree->_kdNodes.size()="<<kdTree->_kdNodes.size()<<" estimated size = "<<estimatedSize<<std::endl;
|
|
||||||
// osg::notify(osg::NOTICE)<<"kdTree->_kdLeaves.size()="<<kdTree->_kdLeaves.size()<<" estimated size = "<<estimatedSize<<std::endl<<std::endl;
|
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
return kdTree.release();
|
|
||||||
}
|
|
||||||
|
|
||||||
void KDTreeBuilder::computeDivisions(KDTree& kdTree)
|
|
||||||
{
|
|
||||||
|
|
||||||
|
|
||||||
osg::Vec3 dimensions(kdTree._bb.xMax()-kdTree._bb.xMin(),
|
|
||||||
kdTree._bb.yMax()-kdTree._bb.yMin(),
|
|
||||||
kdTree._bb.zMax()-kdTree._bb.zMin());
|
|
||||||
|
|
||||||
#ifdef VERBOSE_OUTPUT
|
|
||||||
osg::notify(osg::NOTICE)<<"computeDivisions("<<_maxNumLevels<<") "<<dimensions<< " { "<<std::endl;
|
|
||||||
#endif
|
|
||||||
|
|
||||||
kdTree._axisStack.reserve(_maxNumLevels);
|
|
||||||
|
|
||||||
int level = 0;
|
|
||||||
for(unsigned int level=0; level<_maxNumLevels; ++level)
|
|
||||||
{
|
|
||||||
int axis = 0;
|
|
||||||
if (dimensions[0]>=dimensions[1])
|
|
||||||
{
|
|
||||||
if (dimensions[0]>=dimensions[2]) axis = 0;
|
|
||||||
else axis = 2;
|
|
||||||
}
|
|
||||||
else if (dimensions[1]>=dimensions[2]) axis = 1;
|
|
||||||
else axis = 2;
|
|
||||||
|
|
||||||
kdTree._axisStack.push_back(axis);
|
|
||||||
dimensions[axis] /= 2.0f;
|
|
||||||
|
|
||||||
#ifdef VERBOSE_OUTPUT
|
|
||||||
osg::notify(osg::NOTICE)<<" "<<level<<", "<<dimensions<<", "<<axis<<std::endl;
|
|
||||||
#endif
|
|
||||||
}
|
|
||||||
|
|
||||||
#ifdef VERBOSE_OUTPUT
|
|
||||||
osg::notify(osg::NOTICE)<<"}"<<std::endl;
|
|
||||||
#endif
|
|
||||||
}
|
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
int KDTreeBuilder::divide(KDTree& kdTree, osg::BoundingBox& bb, int nodeIndex, unsigned int level)
|
|
||||||
{
|
|
||||||
if (kdTree._axisStack.size()<=level) return nodeIndex;
|
|
||||||
|
|
||||||
|
|
||||||
int axis = kdTree._axisStack[level];
|
|
||||||
|
|
||||||
#ifdef VERBOSE_OUTPUT
|
|
||||||
//osg::notify(osg::NOTICE)<<"divide("<<nodeIndex<<", "<<level<< "), axis="<<axis<<std::endl;
|
|
||||||
#endif
|
|
||||||
|
|
||||||
if (nodeIndex>=0)
|
|
||||||
{
|
|
||||||
#ifdef VERBOSE_OUTPUT
|
|
||||||
osg::notify(osg::NOTICE)<<" divide node"<<std::endl;
|
|
||||||
#endif
|
|
||||||
KDNode& node = kdTree.getNode(nodeIndex);
|
|
||||||
return nodeIndex;
|
|
||||||
}
|
|
||||||
else
|
|
||||||
{
|
|
||||||
|
|
||||||
if (kdTree.getLeaf(nodeIndex).second<=_targetNumTrianglesPerLeaf) return nodeIndex;
|
|
||||||
|
|
||||||
//osg::notify(osg::NOTICE)<<" divide leaf"<<std::endl;
|
|
||||||
|
|
||||||
int nodeNum = kdTree.addNode(KDNode());
|
|
||||||
|
|
||||||
float original_min = bb._min[axis];
|
|
||||||
float original_max = bb._max[axis];
|
|
||||||
|
|
||||||
float mid = (original_min+original_max)*0.5f;
|
|
||||||
|
|
||||||
{
|
|
||||||
KDLeaf& leaf = kdTree.getLeaf(nodeIndex);
|
|
||||||
|
|
||||||
//osg::Vec3Array* vertices = kdTree._vertices.get();
|
|
||||||
KDTree::CenterList& centers = kdTree._centers;
|
|
||||||
|
|
||||||
int end = leaf.first+leaf.second-1;
|
|
||||||
int left = leaf.first;
|
|
||||||
int right = leaf.first+leaf.second-1;
|
|
||||||
|
|
||||||
while(left<right)
|
|
||||||
{
|
|
||||||
while(left<right && (centers[kdTree._primitiveIndices[left]][axis]<=mid)) { ++left; }
|
|
||||||
|
|
||||||
while(left<right && (centers[kdTree._primitiveIndices[right]][axis]>mid)) { --right; }
|
|
||||||
|
|
||||||
while(left<right && (centers[kdTree._primitiveIndices[right]][axis]>mid)) { --right; }
|
|
||||||
|
|
||||||
if (left<right)
|
|
||||||
{
|
|
||||||
std::swap(kdTree._primitiveIndices[left], kdTree._primitiveIndices[right]);
|
|
||||||
++left;
|
|
||||||
--right;
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
if (left==right)
|
|
||||||
{
|
|
||||||
if (centers[kdTree._primitiveIndices[left]][axis]<=mid) ++left;
|
|
||||||
else --right;
|
|
||||||
}
|
|
||||||
|
|
||||||
KDLeaf leftLeaf(leaf.first, (right-leaf.first)+1);
|
|
||||||
KDLeaf rightLeaf(left, (end-left)+1);
|
|
||||||
|
|
||||||
#if 0
|
|
||||||
osg::notify(osg::NOTICE)<<"In leaf.first ="<<leaf.first <<" leaf.second ="<<leaf.second<<std::endl;
|
|
||||||
osg::notify(osg::NOTICE)<<" leftLeaf.first ="<<leftLeaf.first <<" leftLeaf.second ="<<leftLeaf.second<<std::endl;
|
|
||||||
osg::notify(osg::NOTICE)<<" rightLeaf.first="<<rightLeaf.first<<" rightLeaf.second="<<rightLeaf.second<<std::endl;
|
|
||||||
osg::notify(osg::NOTICE)<<" left="<<left<<" right="<<right<<std::endl;
|
|
||||||
|
|
||||||
if (leaf.second != (leftLeaf.second +rightLeaf.second))
|
|
||||||
{
|
|
||||||
osg::notify(osg::NOTICE)<<"*** Error in size, leaf.second="<<leaf.second
|
|
||||||
<<", leftLeaf.second="<<leftLeaf.second
|
|
||||||
<<", rightLeaf.second="<<rightLeaf.second<<std::endl;
|
|
||||||
}
|
|
||||||
else
|
|
||||||
{
|
|
||||||
osg::notify(osg::NOTICE)<<"Size OK, leaf.second="<<leaf.second
|
|
||||||
<<", leftLeaf.second="<<leftLeaf.second
|
|
||||||
<<", rightLeaf.second="<<rightLeaf.second<<std::endl;
|
|
||||||
}
|
|
||||||
#endif
|
|
||||||
if (leftLeaf.second<=0)
|
|
||||||
{
|
|
||||||
//osg::notify(osg::NOTICE)<<"LeftLeaf empty"<<std::endl;
|
|
||||||
kdTree.getNode(nodeNum).first = 0;
|
|
||||||
kdTree.getNode(nodeNum).second = kdTree.replaceLeaf(nodeIndex, rightLeaf);
|
|
||||||
}
|
|
||||||
else if (rightLeaf.second<=0)
|
|
||||||
{
|
|
||||||
//osg::notify(osg::NOTICE)<<"RightLeaf empty"<<std::endl;
|
|
||||||
kdTree.getNode(nodeNum).first = kdTree.replaceLeaf(nodeIndex, leftLeaf);
|
|
||||||
kdTree.getNode(nodeNum).second = 0;
|
|
||||||
}
|
|
||||||
else
|
|
||||||
{
|
|
||||||
kdTree.getNode(nodeNum).first = kdTree.replaceLeaf(nodeIndex, leftLeaf);
|
|
||||||
kdTree.getNode(nodeNum).second = kdTree.addLeaf(rightLeaf);
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
|
|
||||||
int originalLeftChildIndex = kdTree.getNode(nodeNum).first;
|
|
||||||
int originalRightChildIndex = kdTree.getNode(nodeNum).second;
|
|
||||||
|
|
||||||
|
|
||||||
float restore = bb._max[axis];
|
|
||||||
bb._max[axis] = mid;
|
|
||||||
|
|
||||||
//osg::notify(osg::NOTICE)<<" divide leftLeaf "<<kdTree.getNode(nodeNum).first<<std::endl;
|
|
||||||
int leftChildIndex = divide(kdTree, bb, originalLeftChildIndex, level+1);
|
|
||||||
|
|
||||||
bb._max[axis] = restore;
|
|
||||||
|
|
||||||
restore = bb._min[axis];
|
|
||||||
bb._min[axis] = mid;
|
|
||||||
|
|
||||||
//osg::notify(osg::NOTICE)<<" divide rightLeaf "<<kdTree.getNode(nodeNum).second<<std::endl;
|
|
||||||
int rightChildIndex = divide(kdTree, bb, originalRightChildIndex, level+1);
|
|
||||||
|
|
||||||
bb._min[axis] = restore;
|
|
||||||
|
|
||||||
kdTree.getNode(nodeNum).first = leftChildIndex;
|
|
||||||
kdTree.getNode(nodeNum).second = rightChildIndex;
|
|
||||||
|
|
||||||
|
|
||||||
return nodeNum;
|
|
||||||
}
|
|
||||||
|
|
||||||
|
|
||||||
}
|
|
||||||
|
|
||||||
}
|
|
||||||
@ -1,317 +0,0 @@
|
|||||||
/* OpenSceneGraph example, osgintersection.
|
|
||||||
*
|
|
||||||
* Permission is hereby granted, free of charge, to any person obtaining a copy
|
|
||||||
* of this software and associated documentation files (the "Software"), to deal
|
|
||||||
* in the Software without restriction, including without limitation the rights
|
|
||||||
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
|
||||||
* copies of the Software, and to permit persons to whom the Software is
|
|
||||||
* furnished to do so, subject to the following conditions:
|
|
||||||
*
|
|
||||||
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
|
||||||
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
||||||
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
|
||||||
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
|
||||||
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
|
||||||
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
|
|
||||||
* THE SOFTWARE.
|
|
||||||
*/
|
|
||||||
|
|
||||||
#ifndef VARIABLEDIVISION_H
|
|
||||||
#define VARIABLEDIVISION_H
|
|
||||||
|
|
||||||
|
|
||||||
#include <osgDB/ReadFile>
|
|
||||||
|
|
||||||
#include <osg/ArgumentParser>
|
|
||||||
#include <osg/ApplicationUsage>
|
|
||||||
#include <osg/Timer>
|
|
||||||
#include <osg/CoordinateSystemNode>
|
|
||||||
#include <osg/Notify>
|
|
||||||
#include <osg/io_utils>
|
|
||||||
#include <osg/Geometry>
|
|
||||||
#include <osg/TriangleIndexFunctor>
|
|
||||||
|
|
||||||
|
|
||||||
#include <osgUtil/IntersectionVisitor>
|
|
||||||
#include <osgUtil/LineSegmentIntersector>
|
|
||||||
#include <osgUtil/UpdateVisitor>
|
|
||||||
|
|
||||||
#include <osgSim/LineOfSight>
|
|
||||||
#include <osgSim/HeightAboveTerrain>
|
|
||||||
#include <osgSim/ElevationSlice>
|
|
||||||
|
|
||||||
#include <iostream>
|
|
||||||
|
|
||||||
|
|
||||||
namespace variabledivision
|
|
||||||
{
|
|
||||||
|
|
||||||
typedef int value_type;
|
|
||||||
typedef std::vector< value_type > Indices;
|
|
||||||
|
|
||||||
//#define VERBOSE_OUTPUT
|
|
||||||
|
|
||||||
struct KDNode
|
|
||||||
{
|
|
||||||
KDNode():
|
|
||||||
first(0),
|
|
||||||
second(0) {}
|
|
||||||
|
|
||||||
KDNode(value_type f, value_type s):
|
|
||||||
first(f),
|
|
||||||
second(s) {}
|
|
||||||
|
|
||||||
value_type first;
|
|
||||||
value_type second;
|
|
||||||
|
|
||||||
osg::BoundingBox bb;
|
|
||||||
};
|
|
||||||
|
|
||||||
|
|
||||||
struct KDLeaf
|
|
||||||
{
|
|
||||||
KDLeaf():
|
|
||||||
first(0),
|
|
||||||
second(0) {}
|
|
||||||
|
|
||||||
KDLeaf(value_type f, value_type s):
|
|
||||||
first(f),
|
|
||||||
second(s) {}
|
|
||||||
|
|
||||||
value_type first;
|
|
||||||
value_type second;
|
|
||||||
|
|
||||||
osg::BoundingBox bb;
|
|
||||||
};
|
|
||||||
|
|
||||||
struct Triangle
|
|
||||||
{
|
|
||||||
Triangle(unsigned int p1, unsigned int p2, unsigned int p3):
|
|
||||||
_p1(p1), _p2(p2), _p3(p3) {}
|
|
||||||
|
|
||||||
bool operator < (const Triangle& rhs) const
|
|
||||||
{
|
|
||||||
if (_p1<rhs._p1) return true;
|
|
||||||
if (_p1>rhs._p1) return false;
|
|
||||||
if (_p2<rhs._p2) return true;
|
|
||||||
if (_p2>rhs._p2) return false;
|
|
||||||
return _p3<rhs._p3;
|
|
||||||
}
|
|
||||||
|
|
||||||
unsigned int _p1;
|
|
||||||
unsigned int _p2;
|
|
||||||
unsigned int _p3;
|
|
||||||
};
|
|
||||||
|
|
||||||
class KDTree : public osg::Shape
|
|
||||||
{
|
|
||||||
public:
|
|
||||||
|
|
||||||
|
|
||||||
KDTree() {}
|
|
||||||
|
|
||||||
KDTree(const KDTree& rhs, const osg::CopyOp& copyop=osg::CopyOp::SHALLOW_COPY):
|
|
||||||
Shape(rhs,copyop) {}
|
|
||||||
|
|
||||||
META_Shape(osg, KDTree)
|
|
||||||
|
|
||||||
|
|
||||||
typedef std::vector< unsigned int > AxisStack;
|
|
||||||
typedef std::vector< KDNode > KDNodeList;
|
|
||||||
typedef std::vector< KDLeaf > KDLeafList;
|
|
||||||
|
|
||||||
/// note, leafNum is negative to distinguish from nodeNum
|
|
||||||
int addLeaf(const KDLeaf& leaf) { int num = _kdLeaves.size(); _kdLeaves.push_back(leaf); return -(num+1); }
|
|
||||||
|
|
||||||
int replaceLeaf(int leafNum, const KDLeaf& leaf)
|
|
||||||
{
|
|
||||||
int num = -leafNum-1;
|
|
||||||
|
|
||||||
if (num>_kdLeaves.size()-1)
|
|
||||||
{
|
|
||||||
osg::notify(osg::NOTICE)<<"Warning: replaceChild("<<leafNum<<", leaf), num = "<<num<<" _kdLeaves.size()="<<_kdLeaves.size()<<std::endl;
|
|
||||||
return leafNum;
|
|
||||||
}
|
|
||||||
|
|
||||||
_kdLeaves[num] = leaf; return leafNum;
|
|
||||||
}
|
|
||||||
|
|
||||||
/// note, leafNum is negative to distinguish from nodeNum
|
|
||||||
KDLeaf& getLeaf(int leafNum)
|
|
||||||
{
|
|
||||||
int num = -leafNum-1;
|
|
||||||
if (num<0 || num>_kdLeaves.size()-1)
|
|
||||||
{
|
|
||||||
osg::notify(osg::NOTICE)<<"Warning: getLeaf("<<leafNum<<", num = "<<num<<") _kdLeaves.size()="<<_kdLeaves.size()<<std::endl;
|
|
||||||
}
|
|
||||||
|
|
||||||
return _kdLeaves[num];
|
|
||||||
}
|
|
||||||
|
|
||||||
int addNode(const KDNode& node)
|
|
||||||
{
|
|
||||||
int num = _kdNodes.size();
|
|
||||||
_kdNodes.push_back(node);
|
|
||||||
return num;
|
|
||||||
}
|
|
||||||
|
|
||||||
/// note, nodeNum is positive to distinguish from leftNum
|
|
||||||
KDNode& getNode(int nodeNum)
|
|
||||||
{
|
|
||||||
if (nodeNum<0 || nodeNum>_kdNodes.size()-1)
|
|
||||||
{
|
|
||||||
osg::notify(osg::NOTICE)<<"Warning: getNode("<<nodeNum<<") _kdNodes.size()="<<_kdNodes.size()<<std::endl;
|
|
||||||
}
|
|
||||||
return _kdNodes[nodeNum];
|
|
||||||
}
|
|
||||||
|
|
||||||
osg::BoundingBox& getBounindingBox(int nodeNum)
|
|
||||||
{
|
|
||||||
if (nodeNum<0)
|
|
||||||
{
|
|
||||||
int num = -nodeNum-1;
|
|
||||||
return _kdLeaves[num].bb;
|
|
||||||
}
|
|
||||||
else
|
|
||||||
{
|
|
||||||
return _kdNodes[nodeNum].bb;
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
|
|
||||||
typedef std::vector< osg::BoundingBox > BoundingBoxList;
|
|
||||||
typedef std::vector< Triangle > TriangleList;
|
|
||||||
typedef std::vector< osg::Vec3 > CenterList;
|
|
||||||
|
|
||||||
osg::observer_ptr<osg::Geometry> _geometry;
|
|
||||||
|
|
||||||
osg::BoundingBox _bb;
|
|
||||||
|
|
||||||
AxisStack _axisStack;
|
|
||||||
KDNodeList _kdNodes;
|
|
||||||
KDLeafList _kdLeaves;
|
|
||||||
|
|
||||||
osg::ref_ptr<osg::Vec3Array> _vertices;
|
|
||||||
|
|
||||||
Indices _primitiveIndices;
|
|
||||||
|
|
||||||
BoundingBoxList _boundingBoxes;
|
|
||||||
TriangleList _triangles;
|
|
||||||
CenterList _centers;
|
|
||||||
};
|
|
||||||
|
|
||||||
class KDTreeTraverser
|
|
||||||
{
|
|
||||||
public:
|
|
||||||
|
|
||||||
|
|
||||||
std::ostream& output(unsigned int level)
|
|
||||||
{
|
|
||||||
for(unsigned int i=0; i<level; ++i)
|
|
||||||
{
|
|
||||||
osg::notify(osg::NOTICE)<<" ";
|
|
||||||
}
|
|
||||||
return osg::notify(osg::NOTICE);
|
|
||||||
}
|
|
||||||
|
|
||||||
|
|
||||||
void traverse(KDTree& tree, KDLeaf& leaf, unsigned int level)
|
|
||||||
{
|
|
||||||
output(level)<<"leaf("<<level<<") { ";
|
|
||||||
|
|
||||||
unsigned int end = leaf.first+leaf.second;
|
|
||||||
for(unsigned int i=leaf.first; i<end; ++i)
|
|
||||||
{
|
|
||||||
if (i==leaf.first) osg::notify(osg::NOTICE)<<tree._primitiveIndices[i];
|
|
||||||
else osg::notify(osg::NOTICE)<<", "<<tree._primitiveIndices[i];
|
|
||||||
}
|
|
||||||
|
|
||||||
osg::notify(osg::NOTICE)<<"}"<<std::endl;;
|
|
||||||
|
|
||||||
}
|
|
||||||
|
|
||||||
void traverse(KDTree& tree, value_type nodeIndex, unsigned int level)
|
|
||||||
{
|
|
||||||
output(level)<<"traverse("<<nodeIndex<<", "<< level<<") { "<<std::endl;
|
|
||||||
|
|
||||||
if (nodeIndex>=0)
|
|
||||||
{
|
|
||||||
KDNode& node = tree._kdNodes[nodeIndex];
|
|
||||||
if (node.first) traverse(tree,node.first,level+1);
|
|
||||||
else output(level+1)<<"empty left child()"<<std::endl;
|
|
||||||
|
|
||||||
if (node.second) traverse(tree,node.second,level+1);
|
|
||||||
else output(level+1)<<"empty right child()"<<std::endl;
|
|
||||||
}
|
|
||||||
else
|
|
||||||
{
|
|
||||||
value_type leafIndex = -nodeIndex-1;
|
|
||||||
|
|
||||||
KDLeaf& leaf = tree._kdLeaves[leafIndex];
|
|
||||||
traverse(tree, leaf, level);
|
|
||||||
|
|
||||||
}
|
|
||||||
|
|
||||||
output(level)<<"}"<<std::endl;;
|
|
||||||
}
|
|
||||||
|
|
||||||
|
|
||||||
void traverse(KDTree& tree)
|
|
||||||
{
|
|
||||||
osg::notify(osg::NOTICE)<<"traverse(tree)"<<std::endl;
|
|
||||||
if (!tree._kdNodes.empty())
|
|
||||||
{
|
|
||||||
traverse(tree,0,0);
|
|
||||||
}
|
|
||||||
else if (!tree._kdLeaves.empty())
|
|
||||||
{
|
|
||||||
traverse(tree, tree._kdLeaves.front(), 0);
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
};
|
|
||||||
|
|
||||||
class KDTreeBuilder : public osg::NodeVisitor
|
|
||||||
{
|
|
||||||
public:
|
|
||||||
|
|
||||||
KDTreeBuilder():
|
|
||||||
osg::NodeVisitor(osg::NodeVisitor::TRAVERSE_ALL_CHILDREN),
|
|
||||||
_maxNumLevels(16),
|
|
||||||
_targetNumTrianglesPerLeaf(4),
|
|
||||||
_numVerticesProcessed(0),
|
|
||||||
_processTriangles(true)
|
|
||||||
{
|
|
||||||
}
|
|
||||||
|
|
||||||
|
|
||||||
void apply(osg::Geode& geode)
|
|
||||||
{
|
|
||||||
for(unsigned int i=0; i<geode.getNumDrawables(); ++i)
|
|
||||||
{
|
|
||||||
osg::Geometry* geom = geode.getDrawable(i)->asGeometry();
|
|
||||||
if (geom)
|
|
||||||
{
|
|
||||||
geom->setShape(createKDTree(geom));
|
|
||||||
}
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
KDTree* createKDTree(osg::Geometry* geometry);
|
|
||||||
|
|
||||||
void computeDivisions(KDTree& kdTree);
|
|
||||||
|
|
||||||
int divide(KDTree& kdTree, osg::BoundingBox& bb, int nodeIndex, unsigned int level);
|
|
||||||
|
|
||||||
unsigned int _maxNumLevels;
|
|
||||||
unsigned int _targetNumTrianglesPerLeaf;
|
|
||||||
|
|
||||||
unsigned int _numVerticesProcessed;
|
|
||||||
bool _processTriangles;
|
|
||||||
|
|
||||||
};
|
|
||||||
|
|
||||||
|
|
||||||
}
|
|
||||||
|
|
||||||
#endif
|
|
||||||
Loading…
Reference in New Issue
Block a user