68a3ff3136
git-svn-id: http://www.openmesh.org/svnrepo/OpenMesh/trunk@990 fdac6126-5c0c-442c-9429-916003d36597
181 lines
7.0 KiB
C++
181 lines
7.0 KiB
C++
/*===========================================================================*\
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* *
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* OpenMesh *
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* Copyright (C) 2001-2014 by Computer Graphics Group, RWTH Aachen *
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* www.openmesh.org *
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* *
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*---------------------------------------------------------------------------*
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* This file is part of OpenMesh. *
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* *
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* OpenMesh is free software: you can redistribute it and/or modify *
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* it under the terms of the GNU Lesser General Public License as *
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* published by the Free Software Foundation, either version 3 of *
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* the License, or (at your option) any later version with the *
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* following exceptions: *
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* *
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* If other files instantiate templates or use macros *
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* or inline functions from this file, or you compile this file and *
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* link it with other files to produce an executable, this file does *
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* not by itself cause the resulting executable to be covered by the *
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* GNU Lesser General Public License. This exception does not however *
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* invalidate any other reasons why the executable file might be *
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* covered by the GNU Lesser General Public License. *
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* *
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* OpenMesh is distributed in the hope that it will be useful, *
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* but WITHOUT ANY WARRANTY; without even the implied warranty of *
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
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* GNU Lesser General Public License for more details. *
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* *
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* You should have received a copy of the GNU LesserGeneral Public *
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* License along with OpenMesh. If not, *
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* see <http://www.gnu.org/licenses/>. *
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* *
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\*===========================================================================*/
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/*===========================================================================*\
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* *
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* $Revision: 736 $ *
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* $Date: 2012-10-08 09:30:49 +0200 (Mo, 08. Okt 2012) $ *
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* *
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\*===========================================================================*/
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#include <iostream>
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// -------------------- OpenMesh
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#include <OpenMesh/Core/IO/MeshIO.hh>
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#include <OpenMesh/Core/Mesh/PolyMesh_ArrayKernelT.hh>
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#include <OpenMesh/Core/System/config.h>
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#include <OpenMesh/Core/Mesh/Status.hh>
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// ----------------------------------------------------------------------------
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struct MyTraits : public OpenMesh::DefaultTraits
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{
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VertexAttributes(OpenMesh::Attributes::Status);
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FaceAttributes(OpenMesh::Attributes::Status);
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EdgeAttributes(OpenMesh::Attributes::Status);
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};
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typedef OpenMesh::PolyMesh_ArrayKernelT<MyTraits> MyMesh;
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// ----------------------------------------------------------------------------
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// Build a simple cube and delete it except one face
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int main()
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{
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MyMesh mesh;
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// generate vertices
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MyMesh::VertexHandle vhandle[8];
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MyMesh::FaceHandle fhandle[6];
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vhandle[0] = mesh.add_vertex(MyMesh::Point(-1, -1, 1));
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vhandle[1] = mesh.add_vertex(MyMesh::Point( 1, -1, 1));
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vhandle[2] = mesh.add_vertex(MyMesh::Point( 1, 1, 1));
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vhandle[3] = mesh.add_vertex(MyMesh::Point(-1, 1, 1));
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vhandle[4] = mesh.add_vertex(MyMesh::Point(-1, -1, -1));
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vhandle[5] = mesh.add_vertex(MyMesh::Point( 1, -1, -1));
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vhandle[6] = mesh.add_vertex(MyMesh::Point( 1, 1, -1));
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vhandle[7] = mesh.add_vertex(MyMesh::Point(-1, 1, -1));
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// generate (quadrilateral) faces
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std::vector<MyMesh::VertexHandle> tmp_face_vhandles;
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tmp_face_vhandles.clear();
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tmp_face_vhandles.push_back(vhandle[0]);
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tmp_face_vhandles.push_back(vhandle[1]);
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tmp_face_vhandles.push_back(vhandle[2]);
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tmp_face_vhandles.push_back(vhandle[3]);
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fhandle[0] = mesh.add_face(tmp_face_vhandles);
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tmp_face_vhandles.clear();
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tmp_face_vhandles.push_back(vhandle[7]);
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tmp_face_vhandles.push_back(vhandle[6]);
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tmp_face_vhandles.push_back(vhandle[5]);
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tmp_face_vhandles.push_back(vhandle[4]);
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fhandle[1] = mesh.add_face(tmp_face_vhandles);
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tmp_face_vhandles.clear();
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tmp_face_vhandles.push_back(vhandle[1]);
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tmp_face_vhandles.push_back(vhandle[0]);
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tmp_face_vhandles.push_back(vhandle[4]);
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tmp_face_vhandles.push_back(vhandle[5]);
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fhandle[2] = mesh.add_face(tmp_face_vhandles);
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tmp_face_vhandles.clear();
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tmp_face_vhandles.push_back(vhandle[2]);
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tmp_face_vhandles.push_back(vhandle[1]);
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tmp_face_vhandles.push_back(vhandle[5]);
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tmp_face_vhandles.push_back(vhandle[6]);
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fhandle[3] = mesh.add_face(tmp_face_vhandles);
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tmp_face_vhandles.clear();
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tmp_face_vhandles.push_back(vhandle[3]);
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tmp_face_vhandles.push_back(vhandle[2]);
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tmp_face_vhandles.push_back(vhandle[6]);
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tmp_face_vhandles.push_back(vhandle[7]);
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fhandle[4] = mesh.add_face(tmp_face_vhandles);
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tmp_face_vhandles.clear();
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tmp_face_vhandles.push_back(vhandle[0]);
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tmp_face_vhandles.push_back(vhandle[3]);
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tmp_face_vhandles.push_back(vhandle[7]);
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tmp_face_vhandles.push_back(vhandle[4]);
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fhandle[5] = mesh.add_face(tmp_face_vhandles);
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// And now delete all faces and vertices
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// except face (vh[7], vh[6], vh[5], vh[4])
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// whose handle resides in fhandle[1]
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// Delete face 0
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mesh.delete_face(fhandle[0], false);
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// ... face 2
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mesh.delete_face(fhandle[2], false);
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// ... face 3
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mesh.delete_face(fhandle[3], false);
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// ... face 4
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mesh.delete_face(fhandle[4], false);
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// ... face 5
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mesh.delete_face(fhandle[5], false);
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// If isolated vertices result in a face deletion
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// they have to be deleted manually. If you want this
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// to happen automatically, change the second parameter
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// to true.
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// Now delete the isolated vertices 0, 1, 2 and 3
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mesh.delete_vertex(vhandle[0], false);
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mesh.delete_vertex(vhandle[1], false);
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mesh.delete_vertex(vhandle[2], false);
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mesh.delete_vertex(vhandle[3], false);
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// Delete all elements that are marked as deleted
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// from memory.
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mesh.garbage_collection();
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// write mesh to output.obj
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try {
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if ( !OpenMesh::IO::write_mesh(mesh, "output.off") ) {
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std::cerr << "Cannot write mesh to file 'output.off'" << std::endl;
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return 1;
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}
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}
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catch( std::exception& x )
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{
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std::cerr << x.what() << std::endl;
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return 1;
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}
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return 0;
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}
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