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added function SetQasDistorsion and minor changes

This commit is contained in:
Nico Pietroni 2012-09-18 15:14:12 +00:00
parent 62b1a26ecf
commit 0cde611654
1 changed files with 33 additions and 12 deletions
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45
vcg/complex/algorithms/parametrization/distortion.h
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@ -27,7 +27,7 @@
namespace vcg { namespace vcg {
namespace tri{ namespace tri{
template <class MeshType, bool PerWedgeFlag=false> template <class MeshType, bool PerWedgeFlag=true>
class Distortion class Distortion
{ {
typedef typename MeshType::FaceType FaceType; typedef typename MeshType::FaceType FaceType;
@ -56,23 +56,23 @@ namespace vcg {
return AreaUV; return AreaUV;
} }
static ScalarType EdgeLenght3D(FaceType *f,int e) static ScalarType EdgeLenght3D(const FaceType *f,int e)
{ {
assert((e>=0)&&(e<3)); assert((e>=0)&&(e<3));
ScalarType lenght=(f->P0(e)-f->P1(e)).Norm(); ScalarType lenght=(f->P0(e)-f->P1(e)).Norm();
return (lenght); return (lenght);
} }
static ScalarType EdgeLenghtUV(FaceType *f,int e) static ScalarType EdgeLenghtUV(const FaceType *f,int e)
{ {
assert((e>=0)&&(e<3)); assert((e>=0)&&(e<3));
Point2<ScalarType> uv0,uv1; Point2<ScalarType> uv0,uv1;
if(PerWedgeFlag) { if(PerWedgeFlag) {
uv0=f->WT(e+0).P(); uv0=f->cWT(e+0).P();
uv1=f->WT((e+1)%3).P(); uv1=f->cWT((e+1)%3).P();
} else { } else {
uv0=f->V0(e)->T().P(); uv0=f->cV0(e)->T().P();
uv1=f->V1(e)->T().P(); uv1=f->cV1(e)->T().P();
} }
ScalarType UVlenght=Distance(uv0,uv1); ScalarType UVlenght=Distance(uv0,uv1);
return UVlenght; return UVlenght;
@ -149,6 +149,7 @@ namespace vcg {
public: public:
typedef enum DistType{AreaDist,EdgeDist,AngleDist};
///return the absolute difference between angle in 3D space and texture space ///return the absolute difference between angle in 3D space and texture space
///Actually the difference in cos space ///Actually the difference in cos space
@ -179,9 +180,9 @@ namespace vcg {
} }
///return the global scaling factors from 3D to UV ///return the global scaling factors from 3D to UV
static ScalarType MeshScalingFactor(MeshType &m, static void MeshScalingFactor(const MeshType &m,
ScalarType &AreaScale, ScalarType &AreaScale,
ScalarType &EdgeScale) ScalarType &EdgeScale)
{ {
ScalarType SumArea3D=0; ScalarType SumArea3D=0;
ScalarType SumArea2D=0; ScalarType SumArea2D=0;
@ -204,7 +205,7 @@ namespace vcg {
///return the variance of edge lenght, normalized in absolute value, ///return the variance of edge lenght, normalized in absolute value,
// the needed scaling factor EdgeScaleVal may be calculated // the needed scaling factor EdgeScaleVal may be calculated
///by using the ScalingFactor function ///by using the ScalingFactor function
static ScalarType EdgeDistortion(FaceType *f,int e, static ScalarType EdgeDistortion(const FaceType *f,int e,
ScalarType EdgeScaleVal) ScalarType EdgeScaleVal)
{ {
ScalarType edgeUV=EdgeLenghtUV(f,e)*EdgeScaleVal; ScalarType edgeUV=EdgeLenghtUV(f,e)*EdgeScaleVal;
@ -218,7 +219,7 @@ namespace vcg {
///return the variance of area, normalized ///return the variance of area, normalized
///in absolute value, the scalar AreaScaleVal may be calculated ///in absolute value, the scalar AreaScaleVal may be calculated
///by using the ScalingFactor function ///by using the ScalingFactor function
static ScalarType AreaDistortion(FaceType *f, static ScalarType AreaDistortion(const FaceType *f,
ScalarType AreaScaleVal) ScalarType AreaScaleVal)
{ {
ScalarType areaUV=AreaUV(f)*AreaScaleVal; ScalarType areaUV=AreaUV(f)*AreaScaleVal;
@ -266,6 +267,26 @@ namespace vcg {
} }
return UDdist; return UDdist;
} }
static void SetQasDistorsion(MeshType &m,
DistType DType=AreaDist)
{
ScalarType edge_scale,area_scale;
MeshScalingFactor(m,area_scale,edge_scale);
for (int i=0;i<m.face.size();i++)
{
if (m.face[i].IsD())continue;
if (DType==AreaDist)
m.face[i].Q()=1-AreaDistortion(&m.face[i],area_scale);
else
if (DType==AngleDist)
m.face[i].Q()=1-AngleDistortion(&m.face[i]);
else
m.face[i].Q()=3-EdgeDistortion(&m.face[i],0,edge_scale)-
EdgeDistortion(&m.face[i],1,edge_scale)-
EdgeDistortion(&m.face[i],2,edge_scale);
}
}
}; };
} }
} }