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Commit b7ecd447 authored by Pierre Kraemer's avatar Pierre Kraemer
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ajout collector + debut integration normal cycles

parent 306ac488
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Showing with 135 additions and 13 deletions
include/Algo/Geometry/curvature.h
View file @ b7ecd447
......@@ -116,7 +116,7 @@ void computeCurvatureVertex_NormalCycles(
typename PFP::TVEC3& Kmin,
typename PFP::TVEC3& Knormal) ;
} // namespace Geoemtry
} // namespace Geometry
} // namespace Algo
......
include/Algo/Geometry/curvature.hpp
View file @ b7ecd447
......@@ -337,10 +337,74 @@ void computeCurvatureVertex_NormalCycles(
typename PFP::TVEC3& Kmin,
typename PFP::TVEC3& Knormal)
{
Collector_WithinSphere<PFP> neigh(map, position);
typedef typename PFP::VEC3 VEC3 ;
typedef typename PFP::REAL REAL ;
Algo::Selection::Collector_WithinSphere<PFP> neigh(map, position) ;
neigh.init(dart, radius) ;
neigh.collect() ;
neigh.computeArea() ;
VEC3 center = position[neigh.getCenter()] ;
typename PFP::MATRIX33 tensor(0) ;
// inside
const std::vector<Dart>& vd1 = neigh.getInsideEdges() ;
for (std::vector<Dart>::const_iterator it = vd1.begin(); it != vd1.end(); ++it)
{
const VEC3 e = position[map.phi2(*it)] - position[*it] ;
tensor += Geom::transposed_vectors_mult(e,e) * angles[*it] * (1 / e.norm()) ;
}
// border
const std::vector<Dart>& vd2 = neigh.getBorder() ;
for (std::vector<Dart>::const_iterator it = vd2.begin(); it != vd2.end(); ++it)
{
const VEC3 e = position[map.phi2(*it)] - position[*it] ;
const REAL alpha = neigh.intersect_SphereEdge(*it, map.phi2(*it)) ;
tensor += Geom::transposed_vectors_mult(e,e) * angles[*it] * (1 / e.norm()) * alpha ;
}
tensor /= neigh.getArea() ;
long int n = 3, lda = 3, info, lwork = 9 ;
char jobz='V', uplo = 'U' ;
float work[9] ;
float w[3] ;
float a[3*3] = {
tensor(0,0), 0.0f, 0.0f,
tensor(1,0), tensor(1,1), 0.0f,
tensor(2,0), tensor(2,1), tensor(2,2)
} ;
// Solve eigenproblem
ssyev_(&jobz, &uplo, (integer*)&n, a, (integer*)&lda, w, work, (integer*)&lwork, (integer*)&info) ;
// Check for convergence
if(info > 0)
std::cerr << "clapack ssyev_ failed to compute eigenvalues : exit with code " << info << std::endl ;
// sort eigen components : w[s[0]] has minimal absolute value ; kmin = w[s[1]] <= w[s[2]] = kmax
int s[3] = {0, 1, 2} ;
int tmp ;
if (abs(w[s[2]]) < abs(w[s[1]])) { tmp = s[1] ; s[1] = s[2] ; s[2] = tmp ; }
if (abs(w[s[1]]) < abs(w[s[0]])) { tmp = s[0] ; s[0] = s[1] ; s[1] = tmp ; }
if (w[s[2]] < w[s[1]]) { tmp = s[1] ; s[1] = s[2] ; s[2] = tmp ; }
kmin[dart] = w[s[1]] ;
kmax[dart] = w[s[2]] ;
VEC3& dirMin = Kmin[dart] ;
dirMin[0] = a[3*s[2]];
dirMin[1] = a[3*s[2]+1];
dirMin[2] = a[3*s[2]+2]; // warning : Kmin and Kmax are switched
VEC3& dirMax = Kmax[dart] ;
dirMax[0] = a[3*s[1]];
dirMax[1] = a[3*s[1]+1];
dirMax[2] = a[3*s[1]+2]; // warning : Kmin and Kmax are switched
VEC3& dirNormal = Knormal[dart] ;
dirNormal[0] = a[3*s[0]];
dirNormal[1] = a[3*s[0]+1];
dirNormal[2] = a[3*s[0]+2];
if (dirNormal * normal[dart] < 0)
dirNormal *= -1; // change orientation
}
} // namespace Geometry
......
include/Algo/Geometry/normal.h
View file @ b7ecd447
......@@ -37,16 +37,16 @@ namespace Geometry
{
template <typename PFP>
typename PFP::VEC3 triangleNormal(typename PFP::MAP& map, Dart d, const typename PFP::TVEC3& position);
typename PFP::VEC3 triangleNormal(typename PFP::MAP& map, Dart d, const typename PFP::TVEC3& position) ;
template <typename PFP>
typename PFP::VEC3 faceNormal(typename PFP::MAP& map, Dart d, const typename PFP::TVEC3& position);
typename PFP::VEC3 faceNormal(typename PFP::MAP& map, Dart d, const typename PFP::TVEC3& position) ;
template <typename PFP>
typename PFP::VEC3 vertexNormal(typename PFP::MAP& map, Dart d, const typename PFP::TVEC3& position);
typename PFP::VEC3 vertexNormal(typename PFP::MAP& map, Dart d, const typename PFP::TVEC3& position) ;
template <typename PFP>
void computeNormalFaces(typename PFP::MAP& map, const typename PFP::TVEC3& position, typename PFP::TVEC3& face_normal, const FunctorSelect& select = SelectorTrue(), unsigned int thread=0) ;
void computeNormalFaces(typename PFP::MAP& map, const typename PFP::TVEC3& position, typename PFP::TVEC3& face_normal, const FunctorSelect& select = SelectorTrue(), unsigned int thread = 0) ;
/**
* compute normals of vertices
......@@ -57,7 +57,13 @@ void computeNormalFaces(typename PFP::MAP& map, const typename PFP::TVEC3& posit
* @ param th the thread number
*/
template <typename PFP>
void computeNormalVertices(typename PFP::MAP& map, const typename PFP::TVEC3& position, typename PFP::TVEC3& normal, const FunctorSelect& select = SelectorTrue(), unsigned int thread=0) ;
void computeNormalVertices(typename PFP::MAP& map, const typename PFP::TVEC3& position, typename PFP::TVEC3& normal, const FunctorSelect& select = SelectorTrue(), unsigned int thread = 0) ;
template <typename PFP>
typename PFP::REAL computeAngleBetweenNormalsOnEdge(typename PFP::MAP& map, Dart d, typename PFP::TVEC3& position) ;
template <typename PFP>
void computeAnglesBetweenNormalsOnEdges(typename PFP::MAP& map, typename PFP::TVEC3& position, typename PFP::TREAL& angles, const FunctorSelect& select = SelectorTrue(), unsigned int thread = 0) ;
} // namespace Geometry
......
include/Algo/Geometry/normal.hpp
View file @ b7ecd447
......@@ -112,7 +112,7 @@ void computeNormalFaces(typename PFP::MAP& map, const typename PFP::TVEC3& posit
}
template <typename PFP>
class computeNormalVerticesFunctor: public FunctorMap<typename PFP::MAP>
class computeNormalVerticesFunctor : public FunctorMap<typename PFP::MAP>
{
protected:
typename PFP::MAP& m_map;
......@@ -120,8 +120,8 @@ protected:
typename PFP::TVEC3& m_normal;
public:
computeNormalVerticesFunctor(typename PFP::MAP& map, const typename PFP::TVEC3& position, typename PFP::TVEC3& normal):
m_map(map), m_position(position), m_normal(normal) {}
m_map(map), m_position(position), m_normal(normal)
{}
bool operator()(Dart d)
{
m_normal[d] = vertexNormal<PFP>(m_map, d, m_position) ;
......@@ -129,12 +129,10 @@ public:
}
};
template <typename PFP>
void computeNormalVertices(typename PFP::MAP& map, const typename PFP::TVEC3& position, typename PFP::TVEC3& normal, const FunctorSelect& select, unsigned int thread)
{
CellMarker marker(map, VERTEX,thread);
CellMarker marker(map, VERTEX, thread);
for(Dart d = map.begin(); d != map.end(); map.next(d))
{
if(select(d) && !marker.isMarked(d))
......@@ -145,6 +143,50 @@ void computeNormalVertices(typename PFP::MAP& map, const typename PFP::TVEC3& po
}
}
template <typename PFP>
typename PFP::REAL computeAngleBetweenNormalsOnEdge(typename PFP::MAP& map, Dart d, typename PFP::TVEC3& position)
{
typedef typename PFP::VEC3 VEC3 ;
Dart dd = map.phi2(d) ;
const VEC3 n1 = faceNormal<PFP>(map, d, position) ;
const VEC3 n2 = faceNormal<PFP>(map, dd, position) ;
VEC3 e = position[dd] - position[d] ;
e.normalize() ;
typename PFP::REAL s = e * (n1 ^ n2) ;
typename PFP::REAL c = n1 * n2 ;
typename PFP::REAL a(0) ;
// the following trick is useful for avoiding NaNs (due to floating point errors)
if (c > 0.5)
a = asin(s) ;
else
{
if(c < -1)
c = -1 ;
if (s >= 0)
a = acos(c) ;
else
a = -acos(c) ;
}
if (isnan(a))
std::cerr<< "Warning : computeAngleBetweenNormalsOnEdge returns NaN on edge "<< d << "-" << dd << std::endl ;
return a ;
}
template <typename PFP>
void computeAnglesBetweenNormalsOnEdges(typename PFP::MAP& map, typename PFP::TVEC3& position, typename PFP::TREAL& angles, const FunctorSelect& select, unsigned int thread)
{
CellMarker me(map, EDGE, thread) ;
for(Dart d = map.begin(); d != map.end(); map.next(d))
{
if(select(d) && !me.isMarked(d))
{
me.mark(d) ;
angles[d] = computeAngleBetweenNormalsOnEdge<PFP>(map, d, position) ;
}
}
}
} // namespace Geometry
} // namespace Algo
......
include/Algo/Selection/collector.h
View file @ b7ecd447
......@@ -35,6 +35,9 @@
namespace CGoGN
{
namespace Algo
{
namespace Selection
{
......@@ -154,6 +157,8 @@ public:
} // namespace Selection
} // namespace Algo
} // namespace CGoGN
#include "Algo/Selection/collector.hpp"
......
include/Algo/Selection/collector.hpp
View file @ b7ecd447
......@@ -25,6 +25,9 @@
namespace CGoGN
{
namespace Algo
{
namespace Selection
{
......@@ -201,4 +204,6 @@ void Collector_WithinSphere<PFP>::computeArea()
} // namespace Selection
} // namespace Algo
} // namespace CGoGN
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