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Added EdgeBarycentricToFaceBarycentric to convert an edge position into a face barycentric position

This commit is contained in:
Paolo Cignoni 2013-06-24 07:31:11 +00:00
parent 5049407069
commit 49d759af2a
1 changed files with 35 additions and 26 deletions
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29
vcg/complex/algorithms/update/topology.h
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@ -42,6 +42,7 @@ class UpdateTopology
public: public:
typedef UpdateMeshType MeshType; typedef UpdateMeshType MeshType;
typedef typename MeshType::ScalarType ScalarType;
typedef typename MeshType::VertexType VertexType; typedef typename MeshType::VertexType VertexType;
typedef typename MeshType::VertexPointer VertexPointer; typedef typename MeshType::VertexPointer VertexPointer;
typedef typename MeshType::VertexIterator VertexIterator; typedef typename MeshType::VertexIterator VertexIterator;
@ -69,8 +70,8 @@ public:
PEdge() {} PEdge() {}
void Set( FacePointer pf, const int nz ) void Set( FacePointer pf, const int nz )
{ {
assert(pf!=0); assert(pf!=0);
assert(nz>=0); assert(nz>=0);
assert(nz<pf->VN()); assert(nz<pf->VN());
@ -82,20 +83,28 @@ void Set( FacePointer pf, const int nz )
if( v[0] > v[1] ) math::Swap(v[0],v[1]); if( v[0] > v[1] ) math::Swap(v[0],v[1]);
f = pf; f = pf;
z = nz; z = nz;
} }
inline bool operator < ( const PEdge & pe ) const inline bool operator < ( const PEdge & pe ) const
{ {
if( v[0]<pe.v[0] ) return true; if( v[0]<pe.v[0] ) return true;
else if( v[0]>pe.v[0] ) return false; else if( v[0]>pe.v[0] ) return false;
else return v[1] < pe.v[1]; else return v[1] < pe.v[1];
} }
inline bool operator == ( const PEdge & pe ) const inline bool operator == ( const PEdge & pe ) const
{ {
return v[0]==pe.v[0] && v[1]==pe.v[1]; return v[0]==pe.v[0] && v[1]==pe.v[1];
} }
/// Convert from edge barycentric coord to the face baricentric coord a point on the current edge.
/// Face barycentric coordinates are relative to the edge face.
inline Point3<ScalarType> EdgeBarycentricToFaceBarycentric(ScalarType u) const
{
Point3<ScalarType> interp(0,0,0);
interp[ this->z ] = u;
interp[(this->z+1)%3] = 1.0f-u;
return interp;
}
}; };
// Fill a vector with all the edges of the mesh. // Fill a vector with all the edges of the mesh.