fix for voronoi remesher, again

apps/sample/trimesh_voronoi_remesh/trimesh_voronoi_remesh.cpp

@@ -59,17 +59,26 @@ int main( int argc, char **argv )
   if(argc < 2 )
   {
     printf("Usage trimesh_voro mesh region_num\n");
-     return -1;
-  }
-  printf("Reading %s  \n",argv[1]);
-  int ret= tri::io::Importer<MyMesh>::Open(startMesh,argv[1]);
-  if(ret!=0)
-  {
-    printf("Unable to open %s for '%s'\n",argv[1],tri::io::ImporterPLY<MyMesh>::ErrorMsg(ret));
     return -1;
   }
-  float samplingRadius = startMesh.bbox.Diag() *0.02f;
+  printf("Reading %s  \n",argv[1]);
-  auto remeshed = Remesher<MyMesh>::Remesh(startMesh, samplingRadius, 50.0);
+  int ret = tri::io::Importer<MyMesh>::Open(startMesh,argv[1]);
+  if(ret!=0)
+  {
+    printf("Unable to open %s: '%s'\n",argv[1],tri::io::ImporterPLY<MyMesh>::ErrorMsg(ret));
+    return -1;
+  }
+  tri::UpdateBounding<MyMesh>::Box(startMesh);
+
+  float samplingRadius = startMesh.bbox.Diag() * 0.01f;
+  if (argc == 3)
+  {
+	  try {
+		samplingRadius = stof(string(argv[2]));
+	  } catch (exception &) {}
+  }
+  std::cout << "using sampling radius: " << samplingRadius << std::endl;
+  auto remeshed = Remesher<MyMesh>::Remesh(startMesh, samplingRadius, 75.0);
   
   
   tri::io::ExporterPLY<MyMesh>::Save(*remeshed,"Full.ply",tri::io::Mask::IOM_VERTCOLOR|tri::io::Mask::IOM_WEDGTEXCOORD );

vcg/complex/algorithms/voronoi_processing.h

@@ -1260,7 +1260,7 @@ static int RestrictedVoronoiRelaxing(MeshType &m, std::vector<CoordType> &seedPo
         if(sumVec[i].first != 0)
         {
           newseedVec.push_back(sumVec[i].second /ScalarType(sumVec[i].first));
-          if(vpp.seedPerturbationProbability > RandomGenerator().generate01())
+          if(vpp.seedPerturbationProbability > 0  && (vpp.seedPerturbationProbability > RandomGenerator().generate01()))
             newseedVec.back()+=math::GeneratePointInUnitBallUniform<ScalarType,math::MarsenneTwisterRNG>( RandomGenerator())*perturb;
           newfixedVec.push_back(false);
         }