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slight change to ExtractPolygon to do not need anything for purely triangular meshes

This commit is contained in:
Paolo Cignoni 2017-07-23 09:34:23 +02:00
parent 005adde169
commit c2f0aee10d
1 changed files with 14 additions and 5 deletions
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19
vcg/complex/algorithms/polygon_support.h
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@ -166,14 +166,23 @@ namespace tri {
{ {
vs.clear(); vs.clear();
fs.clear(); fs.clear();
if(tfp->IsV()) return;
// all faux edges return an empty vertex vector!
if( tfp->IsF(0) && tfp->IsF(1) && tfp->IsF(2)) return;
// all NON faux edges just return triangle!
if((!tfp->IsF(0)) && (!tfp->IsF(1)) && (!tfp->IsF(2)))
{
vs.push_back(tfp->V(0)); vs.push_back(tfp->V(1)); vs.push_back(tfp->V(2));
fs.push_back(tfp);
return;
}
// find a non faux edge // find a non faux edge
int se = -1; int se = -1;
for(int i=0; i<3; i++) if (!( tfp->IsF(i))) { se = i; break;} for(int i=0; i<3; i++) if (!( tfp->IsF(i))) { se = i; break;}
assert(se !=-1);
// all faux edges return an empty vertex vector!
if(se==-1) return;
if(tfp->IsV()) return;
// initialize a pos on the first non faux edge // initialize a pos on the first non faux edge
face::Pos<typename TriMeshType::FaceType> start(tfp,se,tfp->V(se)); face::Pos<typename TriMeshType::FaceType> start(tfp,se,tfp->V(se));
face::Pos<typename TriMeshType::FaceType> p(start); face::Pos<typename TriMeshType::FaceType> p(start);