97f515985d
git-svn-id: http://www.openmesh.org/svnrepo/OpenMesh/trunk@2 fdac6126-5c0c-442c-9429-916003d36597
95 lines
2.4 KiB
C++
95 lines
2.4 KiB
C++
#include <iostream>
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#include <typeinfo>
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// --------------------
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#include <OpenMesh/Core/IO/MeshIO.hh>
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#include <OpenMesh/Core/Mesh/TriMesh_ArrayKernelT.hh>
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#include <OpenMesh/Core/Geometry/VectorT.hh>
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#ifndef DOXY_IGNORE_THIS
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// Define my personal traits
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struct MyTraits : OpenMesh::DefaultTraits
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{
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// Let Point and Normal be a vector of doubles
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typedef OpenMesh::Vec3d Point;
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typedef OpenMesh::Vec3d Normal;
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// Already defined in OpenMesh::DefaultTraits
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// HalfedgeAttributes( OpenMesh::Attributes::PrevHalfedge );
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// Uncomment next line to disable attribute PrevHalfedge
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// HalfedgeAttributes( OpenMesh::Attributes::None );
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//
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// or
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//
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// HalfedgeAttributes( 0 );
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};
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#endif
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// Define my mesh with the new traits!
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typedef OpenMesh::TriMesh_ArrayKernelT<MyTraits> MyMesh;
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// ------------------------------------------------------------------ main ----
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int main(int argc, char **argv)
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{
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MyMesh mesh;
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if (argc!=2)
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{
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std::cerr << "Usage: " << argv[0] << " <input>\n";
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return 1;
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}
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// Just make sure that point element type is double
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if ( typeid( OpenMesh::vector_traits<MyMesh::Point>::value_type )
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!= typeid(double) )
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{
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std::cerr << "Ouch! ERROR! Data type is wrong!\n";
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return 1;
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}
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// Make sure that normal element type is double
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if ( typeid( OpenMesh::vector_traits<MyMesh::Normal>::value_type )
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!= typeid(double) )
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{
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std::cerr << "Ouch! ERROR! Data type is wrong!\n";
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return 1;
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}
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// Add vertex normals as default property (ref. previous tutorial)
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mesh.request_vertex_normals();
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// Add face normals as default property
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mesh.request_face_normals();
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// load a mesh
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OpenMesh::IO::Options opt;
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if ( ! OpenMesh::IO::read_mesh(mesh,argv[1], opt))
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{
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std::cerr << "Error loading mesh from file " << argv[1] << std::endl;
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return 1;
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}
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// If the file did not provide vertex normals, then calculate them
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if ( !opt.check( OpenMesh::IO::Options::VertexNormal ) &&
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mesh.has_face_normals() && mesh.has_vertex_normals() )
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{
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// let the mesh update the normals
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mesh.update_normals();
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}
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// move all vertices one unit length along it's normal direction
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for (MyMesh::VertexIter v_it = mesh.vertices_begin();
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v_it != mesh.vertices_end(); ++v_it)
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{
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std::cout << "Vertex #" << v_it << ": " << mesh.point( v_it );
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mesh.set_point( v_it, mesh.point(v_it)+mesh.normal(v_it) );
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std::cout << " moved to " << mesh.point( v_it ) << std::endl;
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}
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return 0;
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}
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