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fix off polygon export

This commit is contained in:
alemuntoni 2021-07-06 16:43:22 +02:00
parent 094918662b
commit 0f320aa671
2 changed files with 13 additions and 3 deletions
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7
vcg/complex/algorithms/polygon_support.h
View File

@ -24,6 +24,9 @@
#ifndef __VCGLIB_POLYGON_SUPPORT
#define __VCGLIB_POLYGON_SUPPORT
#include <vcg/complex/allocate.h>
#include <vcg/complex/base.h>
#include <vcg/complex/algorithms/update/flag.h>
#include <vcg/simplex/face/jumping_pos.h>
#include <vcg/space/planar_polygon_tessellation.h>
@ -141,8 +144,8 @@ namespace tri {
{
std::vector<typename TriMeshType::VertexPointer> vs;// vertices of the polygon
ExtractPolygon(&*tfi,vs);
if (vs.size() > 3)
std::reverse(vs.begin(), vs.end());
if (vs.size() > 3)
std::reverse(vs.begin(), vs.end());
//now vs contains all the vertices of the polygon (still in the trimesh)
if (vs.size()==0)continue;
typename PolyMeshType::FaceIterator pfi = tri::Allocator<PolyMeshType>::AddFaces(pm,1);

9
wrap/io_trimesh/export_off.h
View File

@ -104,10 +104,17 @@ public:
tri::UpdateFlags<SaveMeshType>::FaceClearV(m);
for(FaceIterator fi=m.face.begin();fi!=m.face.end();++fi) if (!fi->IsD()) if (!fi->IsV()) {
vcg::tri::PolygonSupport<SaveMeshType,SaveMeshType>::ExtractPolygon(&*fi,polygon);
//not sure why this std::reverse is needed. ExtractPolygon is used in
//many other functions, and nobody complained. however, this list is
//clockwise wrt fi normal.
std::reverse(polygon.begin(), polygon.end());
if(!polygon.empty())
{
fprintf(fpout,"%d ", int(polygon.size()) );
for (size_t i=0; i<polygon.size(); i++) fprintf(fpout,"%d ", polygon[i]->Flags() );
for (size_t i=0; i<polygon.size(); i++)
fprintf(fpout,"%lu ", tri::Index(m,polygon[i]));
if( tri::HasPerFaceColor(m) && (mask & io::Mask::IOM_FACECOLOR) )
fprintf(fpout,"%i %i %i", fi->C()[0],fi->C()[1],fi->C()[2] );
fprintf(fpout,"\n");
}
}