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Merge pull request #260 from blobfish/primitiveIndex

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Intersections and primitive index
This commit is contained in:
OpenSceneGraph git repository 2017-06-19 08:12:47 +01:00 committed by GitHub
commit 9ba59eceaa
5 changed files with 55 additions and 26 deletions
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4
examples/osgkeyboardmouse/osgkeyboardmouse.cpp
View File

@ -349,7 +349,9 @@ public:
if (picker->containsIntersections())
{
osgUtil::LineSegmentIntersector::Intersection intersection = picker->getFirstIntersection();
osg::notify(osg::NOTICE)<<"Picked "<<intersection.localIntersectionPoint<<std::endl;
osg::notify(osg::NOTICE)<<"Picked "<<intersection.localIntersectionPoint<<std::endl
<<" primitive index "<<intersection.primitiveIndex
<<std::endl;
osg::NodePath& nodePath = intersection.nodePath;
node = (nodePath.size()>=1)?nodePath[nodePath.size()-1]:0;

23
include/osg/KdTree
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@ -69,41 +69,45 @@ class OSG_EXPORT KdTree : public osg::Shape
inline unsigned int addPoint(unsigned int p0)
{
unsigned int i = _vertexIndices.size();
_primitiveIndices.push_back(i);
_vertexIndices.push_back(_primitiveIndices.size() + _degenerateCount);
_vertexIndices.push_back(1);
_vertexIndices.push_back(p0);
_primitiveIndices.push_back(i);
return i;
}
inline unsigned int addLine(unsigned int p0, unsigned int p1)
{
unsigned int i = _vertexIndices.size();
_primitiveIndices.push_back(i);
_vertexIndices.push_back(_primitiveIndices.size() + _degenerateCount);
_vertexIndices.push_back(2);
_vertexIndices.push_back(p0);
_vertexIndices.push_back(p1);
_primitiveIndices.push_back(i);
return i;
}
inline unsigned int addTriangle(unsigned int p0, unsigned int p1, unsigned int p2)
{
unsigned int i = _vertexIndices.size();
_primitiveIndices.push_back(i);
_vertexIndices.push_back(_primitiveIndices.size() + _degenerateCount);
_vertexIndices.push_back(3);
_vertexIndices.push_back(p0);
_vertexIndices.push_back(p1);
_vertexIndices.push_back(p2);
_primitiveIndices.push_back(i);
return i;
}
inline unsigned int addQuad(unsigned int p0, unsigned int p1, unsigned int p2, unsigned int p3)
{
unsigned int i = _vertexIndices.size();
_primitiveIndices.push_back(i);
_vertexIndices.push_back(_primitiveIndices.size() + _degenerateCount);
_vertexIndices.push_back(4);
_vertexIndices.push_back(p0);
_vertexIndices.push_back(p1);
_vertexIndices.push_back(p2);
_vertexIndices.push_back(p3);
_primitiveIndices.push_back(i);
return i;
}
@ -154,13 +158,14 @@ class OSG_EXPORT KdTree : public osg::Shape
for(int i=istart; i<iend; ++i)
{
unsigned int primitiveIndex = _primitiveIndices[i];
unsigned int originalPIndex = _vertexIndices[primitiveIndex++];
unsigned int numVertices = _vertexIndices[primitiveIndex++];
switch(numVertices)
{
case(1): functor.intersect(_vertices.get(), i, _vertexIndices[primitiveIndex]); break;
case(2): functor.intersect(_vertices.get(), i, _vertexIndices[primitiveIndex], _vertexIndices[primitiveIndex+1]); break;
case(3): functor.intersect(_vertices.get(), i, _vertexIndices[primitiveIndex], _vertexIndices[primitiveIndex+1], _vertexIndices[primitiveIndex+2]); break;
case(4): functor.intersect(_vertices.get(), i, _vertexIndices[primitiveIndex], _vertexIndices[primitiveIndex+1], _vertexIndices[primitiveIndex+2], _vertexIndices[primitiveIndex+3]); break;
case(1): functor.intersect(_vertices.get(), originalPIndex, _vertexIndices[primitiveIndex]); break;
case(2): functor.intersect(_vertices.get(), originalPIndex, _vertexIndices[primitiveIndex], _vertexIndices[primitiveIndex+1]); break;
case(3): functor.intersect(_vertices.get(), originalPIndex, _vertexIndices[primitiveIndex], _vertexIndices[primitiveIndex+1], _vertexIndices[primitiveIndex+2]); break;
case(4): functor.intersect(_vertices.get(), originalPIndex, _vertexIndices[primitiveIndex], _vertexIndices[primitiveIndex+1], _vertexIndices[primitiveIndex+2], _vertexIndices[primitiveIndex+3]); break;
default : OSG_NOTICE<<"Warning: KdTree::intersect() encounted unsupported primitive size of "<<numVertices<<std::endl; break;
}
}
@ -174,7 +179,7 @@ class OSG_EXPORT KdTree : public osg::Shape
}
}
unsigned int _degenerateCount;
protected:

7
src/osg/KdTree.cpp
View File

@ -86,6 +86,7 @@ struct PrimitiveIndicesCollector
if (v0==v1)
{
//OSG_NOTICE<<"Disgarding degenerate triangle"<<std::endl;
_buildKdTree->_kdTree._degenerateCount++;
return;
}
@ -111,6 +112,7 @@ struct PrimitiveIndicesCollector
if (v0==v1 || v1==v2 || v2==v0)
{
//OSG_NOTICE<<"Disgarding degenerate triangle"<<std::endl;
_buildKdTree->_kdTree._degenerateCount++;
return;
}
@ -138,6 +140,7 @@ struct PrimitiveIndicesCollector
if (v0==v1 || v1==v2 || v2==v0 || v3==v0 || v3==v1 || v3==v2)
{
//OSG_NOTICE<<"Disgarding degenerate quad"<<std::endl;
_buildKdTree->_kdTree._degenerateCount++;
return;
}
@ -287,6 +290,7 @@ int BuildKdTree::divide(KdTree::BuildOptions& options, osg::BoundingBox& bb, int
for(int i=istart; i<=iend; ++i)
{
unsigned int primitiveIndex = _kdTree.getPrimitiveIndices()[_primitiveIndices[i]];
primitiveIndex++; //skip original Primitive index
unsigned int numPoints = _kdTree.getVertexIndices()[primitiveIndex++];
for(; numPoints>0; --numPoints)
@ -480,12 +484,13 @@ KdTree::BuildOptions::BuildOptions():
//
// KdTree
KdTree::KdTree()
KdTree::KdTree() : _degenerateCount(0)
{
}
KdTree::KdTree(const KdTree& rhs, const osg::CopyOp& copyop):
Shape(rhs, copyop),
_degenerateCount(rhs._degenerateCount),
_vertices(rhs._vertices),
_kdNodes(rhs._kdNodes)
{

4
src/osgUtil/LineSegmentIntersector.cpp
View File

@ -357,15 +357,15 @@ struct IntersectFunctor
// handle triangles
void operator()(const osg::Vec3& v0, const osg::Vec3& v1, const osg::Vec3& v2, bool /*treatVertexDataAsTemporary*/)
{
++_primitiveIndex;
intersect(v0,v1,v2);
++_primitiveIndex;
}
void operator()(const osg::Vec3& v0, const osg::Vec3& v1, const osg::Vec3& v2, const osg::Vec3& v3, bool /*treatVertexDataAsTemporary*/)
{
++_primitiveIndex;
intersect(v0,v1,v3);
intersect(v1,v2,v3);
++_primitiveIndex;
}
void intersect(const osg::Vec3Array*, int , unsigned int)

35
src/osgUtil/PolytopeIntersector.cpp
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@ -256,9 +256,11 @@ struct IntersectFunctor
{
if (_settings->_limitOneIntersection && _hit) return;
if ((_settings->_primitiveMask&PolytopeIntersector::POINT_PRIMITIVES)==0)
{
++_primitiveIndex;
if ((_settings->_primitiveMask&PolytopeIntersector::POINT_PRIMITIVES)==0) return;
return;
}
// initialize the set of vertices to test.
src.clear();
@ -278,7 +280,11 @@ struct IntersectFunctor
{
const osg::Plane& plane=*pitr;
double d1=plane.distance(v0);
if (d1<0.0) return; // point outside
if (d1<0.0) // point outside
{
++_primitiveIndex;
return;
}
}
}
}
@ -286,6 +292,8 @@ struct IntersectFunctor
src.push_back(v0);
addIntersection();
++_primitiveIndex;
}
// handle lines
@ -293,9 +301,11 @@ struct IntersectFunctor
{
if (_settings->_limitOneIntersection && _hit) return;
if ((_settings->_primitiveMask&PolytopeIntersector::LINE_PRIMITIVES)==0)
{
++_primitiveIndex;
if ((_settings->_primitiveMask&PolytopeIntersector::LINE_PRIMITIVES)==0) return;
return;
}
src.clear();
src.push_back(v0);
@ -305,6 +315,7 @@ struct IntersectFunctor
{
addIntersection();
}
++_primitiveIndex;
}
// handle triangles
@ -312,9 +323,11 @@ struct IntersectFunctor
{
if (_settings->_limitOneIntersection && _hit) return;
if ((_settings->_primitiveMask&PolytopeIntersector::TRIANGLE_PRIMITIVES)==0)
{
++_primitiveIndex;
if ((_settings->_primitiveMask&PolytopeIntersector::TRIANGLE_PRIMITIVES)==0) return;
return;
}
src.clear();
src.push_back(v0);
@ -326,15 +339,18 @@ struct IntersectFunctor
{
addIntersection();
}
++_primitiveIndex;
}
void operator()(const osg::Vec3& v0, const osg::Vec3& v1, const osg::Vec3& v2, const osg::Vec3& v3, bool /*treatVertexDataAsTemporary*/)
{
if (_settings->_limitOneIntersection && _hit) return;
if ((_settings->_primitiveMask&PolytopeIntersector::TRIANGLE_PRIMITIVES)==0)
{
++_primitiveIndex;
if ((_settings->_primitiveMask&PolytopeIntersector::TRIANGLE_PRIMITIVES)==0) return;
return;
}
src.clear();
@ -348,6 +364,7 @@ struct IntersectFunctor
{
addIntersection();
}
++_primitiveIndex;
}
void intersect(const osg::Vec3Array* vertices, int primitiveIndex, unsigned int p0)