First checkin for OpenMesh 2.0

git-svn-id: http://www.openmesh.org/svnrepo/OpenMesh/trunk@2 fdac6126-5c0c-442c-9429-916003d36597

Doc/Tutorial/02-iterators/smooth.cc

@@ -0,0 +1,76 @@
+#include <iostream>
+#include <vector>
+// -------------------- OpenMesh
+#include <OpenMesh/Core/IO/MeshIO.hh>
+#include <OpenMesh/Core/Mesh/TriMesh_ArrayKernelT.hh>
+
+typedef OpenMesh::TriMesh_ArrayKernelT<>  MyMesh;
+
+
+int main(int argc, char **argv)
+{
+  MyMesh  mesh;
+
+
+  // check command line options
+  if (argc != 4) 
+  {
+    std::cerr << "Usage:  " << argv[0] << " #iterations infile outfile\n";
+    return 1;
+  }
+
+
+  // read mesh from stdin
+  if ( ! OpenMesh::IO::read_mesh(mesh, argv[2]) )
+  {
+    std::cerr << "Error: Cannot read mesh from " << argv[2] << std::endl;
+    return 1;
+  }
+
+
+  // this vector stores the computed centers of gravity
+  std::vector<MyMesh::Point>  cogs;
+  std::vector<MyMesh::Point>::iterator cog_it;
+  cogs.reserve(mesh.n_vertices());
+
+
+  // smoothing mesh argv[1] times
+  MyMesh::VertexIter          v_it, v_end(mesh.vertices_end());
+  MyMesh::VertexVertexIter    vv_it;
+  MyMesh::Point               cog;
+  MyMesh::Scalar              valence;
+  unsigned int                i, N(atoi(argv[1]));
+
+
+  for (i=0; i < N; ++i)
+  {
+    cogs.clear();
+    for (v_it=mesh.vertices_begin(); v_it!=v_end; ++v_it)
+    {
+      cog[0] = cog[1] = cog[2] = valence = 0.0;
+      
+      for (vv_it=mesh.vv_iter( v_it ); vv_it; ++vv_it)
+      {
+        cog += mesh.point( vv_it );
+        ++valence;
+      }
+
+      cogs.push_back(cog / valence);
+    }
+    
+    for (v_it=mesh.vertices_begin(), cog_it=cogs.begin(); 
+         v_it!=v_end; ++v_it, ++cog_it)
+      if ( !mesh.is_boundary( v_it ) )
+        mesh.set_point( v_it, *cog_it );
+  }
+
+
+  // write mesh to stdout
+  if ( ! OpenMesh::IO::write_mesh(mesh, argv[3]) )
+  {
+    std::cerr << "Error: cannot write mesh to " << argv[3] << std::endl;
+    return 1;
+  }
+
+  return 0;
+}