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Added SplitSelectedVertexOnEdgeMesh that split an edge mesh along the selected vertices. Useful to decompose an edgemesh into simple manifold polylines.

This commit is contained in:
Paolo Cignoni 2014-08-26 01:42:09 +00:00
parent a9202ed7db
commit c6e5015090
1 changed files with 71 additions and 0 deletions
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71
vcg/complex/algorithms/clean.h
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@ -28,6 +28,7 @@
#include <vcg/complex/complex.h>
#include <vcg/simplex/face/pos.h>
#include <vcg/simplex/face/topology.h>
#include <vcg/simplex/edge/topology.h>
#include <vcg/complex/algorithms/closest.h>
#include <vcg/space/index/grid_static_ptr.h>
#include <vcg/space/index/spatial_hashing.h>
@ -457,6 +458,60 @@ public:
return count_removed;
}
static int SplitSelectedVertexOnEdgeMesh(MeshType& m)
{
tri::RequireCompactness(m);
tri::UpdateFlags<MeshType>::VertexClearV(m);
for(size_t i=0;i<m.edge.size();++i)
{
for(int j=0;j<2;++j)
{
VertexPointer vp = m.edge[i].V(j);
if(vp->IsS())
{
if(!vp->IsV())
m.edge[i].V(j) = &*(tri::Allocator<MeshType>::AddVertex(m,vp->P()));
else vp->SetV();
}
}
}
}
static void SelectNonManifoldVertexOnEdgeMesh(MeshType &m)
{
tri::RequireCompactness(m);
tri::UpdateSelection<MeshType>::VertexClear(m);
std::vector<int> cnt(m.vn,0);
for(size_t i=0;i<m.edge.size();++i)
{
cnt[tri::Index(m,m.edge[i].V(0))]++;
cnt[tri::Index(m,m.edge[i].V(1))]++;
}
for(size_t i=0;i<m.vert.size();++i)
if(cnt[i]>2) m.vert[i].SetS();
}
static void SelectCreaseVertexOnEdgeMesh(MeshType &m, ScalarType AngleRadThr)
{
tri::RequireCompactness(m);
tri::RequireVEAdjacency(m);
tri::UpdateTopology<MeshType>::VertexEdge(m);
for(size_t i=0;i<m.vert.size();++i)
{
std::vector<VertexPointer> VVStarVec;
edge::VVStarVE<typename MeshType::EdgeType>(&(m.vert[i]),VVStarVec);
if(VVStarVec.size()==2)
{
CoordType v0 = m.vert[i].P() - VVStarVec[0]->P();
CoordType v1 = m.vert[i].P() - VVStarVec[1]->P();
float angle = M_PI-vcg::Angle(v0,v1);
if(angle > AngleRadThr) m.vert[i].SetS();
}
}
}
/// Removal of faces that were incident on a non manifold edge.
@ -623,6 +678,22 @@ public:
}
static bool IsFaceFauxConsistent(MeshType &m)
{
RequirePerFaceFlags(m);
RequireFFAdjacency(m);
for(FaceIterator fi=m.face.begin();fi!=m.face.end();++fi) if(!(*fi).IsD())
{
for(int z=0;z<(*fi).VN();++z)
{
FacePointer fp = fi->FFp(z);
int zp = fi->FFi(z);
if(fi->IsF(z) != fp->IsF(zp)) return false;
}
}
return true;
}
/**
* Is the mesh only composed by triangles? (non polygonal faces)
*/