From 07de5590ffb92ac391dfe483141b09fcc3255c2f Mon Sep 17 00:00:00 2001
From: Paolo Cignoni <paolo.cignoni@isti.cnr.it>
Date: Thu, 29 Nov 2018 00:32:58 +0100
Subject: [PATCH] Added support of polygonal mesh to OFF

(not only bitpoly also the plain poly mesh)
---
 wrap/io_trimesh/export_off.h | 29 ++++++-----------------------
 1 file changed, 6 insertions(+), 23 deletions(-)

diff --git a/wrap/io_trimesh/export_off.h b/wrap/io_trimesh/export_off.h
index 26a0e019..c3a54f99 100644
--- a/wrap/io_trimesh/export_off.h
+++ b/wrap/io_trimesh/export_off.h
@@ -77,17 +77,9 @@ public:
     fprintf(fpout,"%d %d 0\n", m.vn, polynumber); // note that as edge number we simply write zero
 
     //vertices
-    int j;
-    std::vector<int> FlagV;
-    VertexPointer  vp;
-    VertexIterator vi;
     const int DGT = vcg::tri::io::Precision<ScalarType>::digits();
-
-    for(j=0,vi=m.vert.begin();vi!=m.vert.end();++vi)
+    for(auto vp=m.vert.begin();vp!=m.vert.end();++vp)
     {
-      vp=&(*vi);
-      if (vcg::tri::HasPerVertexFlags(m))
-        FlagV.push_back(vp->Flags()); // Save vertex flags
       if( ! vp->IsD() )
       {	// ***** ASCII *****
 
@@ -102,15 +94,9 @@ public:
           fprintf(fpout,"%g %g ",vp->T().u(),vp->T().v());
 
         fprintf(fpout,"\n");
-
-
-        vp->Flags()=j; // Trucco! Nascondi nei flags l'indice del vertice non deletato!
-        j++;
       }
     }
 
-    assert(j==m.vn);
-
 
     if (mask &io::Mask::IOM_BITPOLYGONAL) {
       tri::RequireFFAdjacency(m);
@@ -131,19 +117,16 @@ public:
       {
         if( ! fi->IsD() )
         {
+          fprintf(fpout,"%i ",fi->VN());
+          for(int i=0;i<fi->VN();++i)
+              fprintf(fpout,"%lu ",tri::Index(m,fi->V(i)));
           if( tri::HasPerFaceColor(m)  && (mask & io::Mask::IOM_FACECOLOR) )
-            fprintf(fpout,"3 %d %d %d %i %i %i\n", fi->cV(0)->Flags(),	fi->cV(1)->Flags(), fi->cV(2)->Flags(), fi->C()[0],fi->C()[1],fi->C()[2] );
-            else
-          fprintf(fpout,"3 %d %d %d\n", fi->cV(0)->Flags(),	fi->cV(1)->Flags(), fi->cV(2)->Flags() );
+            fprintf(fpout,"%i %i %i", fi->C()[0],fi->C()[1],fi->C()[2] );
+          fprintf(fpout,"\n");
         }
       }
     }
 
-    // Recupera i flag originali
-    j=0;
-    for(vi=m.vert.begin();vi!=m.vert.end();++vi)
-      (*vi).Flags()=FlagV[j++];
-
 	int result = 0;
 	if (ferror(fpout)) result = 2;
 	fclose(fpout);