polygonmesh_dual.cpp

/****************************************************************************
* VCGLib                                                            o o     *
* Visual and Computer Graphics Library                            o     o   *
*                                                                _   O  _   *
* Copyright(C) 2004-2016                                           \/)\/    *
* Visual Computing Lab                                            /\/|      *
* ISTI - Italian National Research Council                           |      *
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* it under the terms of the GNU General Public License as published by      *
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* (at your option) any later version.                                       *
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* This program is distributed in the hope that it will be useful,           *
* but WITHOUT ANY WARRANTY; without even the implied warranty of            *
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the             *
* GNU General Public License (http://www.gnu.org/licenses/gpl.txt)          *
* for more details.                                                         *
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****************************************************************************/

#include <vcg/complex/complex.h>

/*include the algorithms for updating: */
#include <vcg/complex/algorithms/update/bounding.h>
#include <vcg/complex/algorithms/update/normal.h>

#include <vcg/complex/algorithms/clean.h>
#include <vcg/complex/algorithms/create/platonic.h>

#include <wrap/io_trimesh/export_obj.h>
#include <wrap/io_trimesh/import_obj.h>

#include <vcg/complex/algorithms/dual_meshing.h>

#include <vcg/complex/algorithms/polygon_support.h>

using namespace vcg;
using namespace std;

// forward declarations
class TFace;
class TVertex;

struct TUsedTypes: public vcg::UsedTypes< vcg::Use<TVertex>::AsVertexType, vcg::Use<TFace>::AsFaceType >{};

/* Definition of a mesh of triangles
*/
class TVertex : public Vertex< TUsedTypes,
    vertex::BitFlags,
    vertex::Coord3f,
    vertex::Normal3f,
    vertex::Mark >{};

class TFace   : public Face<   TUsedTypes,
    face::VertexRef,    // three pointers to vertices
    face::Normal3f,             // normal
    face::BitFlags,             // flags
    face::FFAdj                 // three pointers to adjacent faces
> {};

/* the mesh is a container of vertices and a container of faces */
class TMesh   : public vcg::tri::TriMesh< vector<TVertex>, vector<TFace> > {};


/* Definition of a mesh of polygons that also supports half-edges
*/
class PFace;
class PVertex;

struct PUsedTypes: public vcg::UsedTypes<vcg::Use<PVertex>  ::AsVertexType,
                                          vcg::Use<PFace>       ::AsFaceType>{};

class PVertex:public vcg::Vertex<       PUsedTypes,
                                    vcg::vertex::Coord3f,
                                    vcg::vertex::Normal3f,
                                    vcg::vertex::Mark,
                                    vcg::vertex::BitFlags>{} ;

class PFace:public vcg::Face<
     PUsedTypes
    ,vcg::face::PolyInfo // this is necessary  if you use component in vcg/simplex/face/component_polygon.h
                         // It says "this class is a polygon and the memory for its components (e.g. pointer to its vertices
                         // will be allocated dynamically")
    ,vcg::face::PFVAdj   // Pointer to the vertices (just like FVAdj )
    ,vcg::face::PFVAdj
    ,vcg::face::PFFAdj   // Pointer to edge-adjacent face (just like FFAdj )
    ,vcg::face::BitFlags // bit flags
    ,vcg::face::Normal3f // normal
> {};

class PMesh: public
    vcg::tri::TriMesh<
    std::vector<PVertex>,       // the vector of vertices
    std::vector<PFace >     // the vector of faces
    >{};

TMesh primalT;
PMesh primal,dual;

int     main(int argc, char *argv[])
{
    (void)argc;
    (void)argv;

    vcg::tri::Sphere<TMesh>(primalT,2);
    vcg::tri::PolygonSupport<TMesh,PMesh>::ImportFromTriMesh(primal,primalT);

    vcg::tri::DualMeshing<PMesh>::MakeDual(primal,dual);
    vcg::tri::io::ExporterOBJ<PMesh>::Save(dual,"./dual.obj",vcg::tri::io::Mask::IOM_BITPOLYGONAL);

    vcg::tri::DualMeshing<PMesh>::MakeDual(dual,primal);
    vcg::tri::io::ExporterOBJ<PMesh>::Save(primal,"./dual_dual.obj",vcg::tri::io::Mask::IOM_BITPOLYGONAL);

}