FGFS-4.1/simgear
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Avoid duplicate triangles.

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Modified Files:
	simgear/scene/bvh/BVHStaticGeometryBuilder.hxx
This commit is contained in:
frohlich
2009-03-03 08:25:19 +00:00
committed by Tim Moore
parent addf47600d
commit 2564432e71
1 changed files with 12 additions and 0 deletions
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12
simgear/scene/bvh/BVHStaticGeometryBuilder.hxx
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@@ -18,6 +18,10 @@
#ifndef BVHStaticGeometryBuilder_hxx
#define BVHStaticGeometryBuilder_hxx
#include <algorithm>
#include <map>
#include <set>
#include <simgear/structure/SGReferenced.hxx>
#include <simgear/structure/SGSharedPtr.hxx>
@@ -71,6 +75,9 @@ public:
typedef std::map<SGVec3f, unsigned> VertexMap;
VertexMap _vertexMap;
typedef std::set<SGVec3<unsigned> > TriangleSet;
TriangleSet _triangleSet;
void setCurrentMaterial(const SGMaterial* material)
{
_currentMaterial = material;
@@ -98,6 +105,11 @@ public:
void addTriangle(const SGVec3f& v1, const SGVec3f& v2, const SGVec3f& v3)
{
unsigned indices[3] = { addVertex(v1), addVertex(v2), addVertex(v3) };
std::sort(indices, indices + 3);
SGVec3<unsigned> indexKey(indices);
if (_triangleSet.find(indexKey) != _triangleSet.end())
return;
_triangleSet.insert(indexKey);
BVHStaticTriangle* staticTriangle;
staticTriangle = new BVHStaticTriangle(_currentMaterialIndex, indices);
_leafRefList.push_back(LeafRef(staticTriangle, *_staticData));