stl_occ_mesh.h

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/****************************************************************************
** gmio
** Copyright Fougue (24 Jun. 2016)
** contact@fougue.pro
**
** This software is a reusable library whose purpose is to provide complete
** I/O support for various CAD file formats (eg. STL)
**
** This software is governed by the CeCILL-B license under French law and
** abiding by the rules of distribution of free software.  You can  use,
** modify and/ or redistribute the software under the terms of the CeCILL-B
** license as circulated by CEA, CNRS and INRIA at the following URL
** "http://www.cecill.info/licences/Licence_CeCILL-B_V1-en.html".
****************************************************************************/

#ifndef __cplusplus
#  error C++ compiler required
#endif

#ifndef GMIO_SUPPORT_STL_OCC_MESH_H
#define GMIO_SUPPORT_STL_OCC_MESH_H

#include "support_global.h"
#include "../gmio_stl/stl_mesh.h"
#include "../gmio_stl/stl_mesh_creator.h"

#include <vector>

#include <StlMesh_Mesh.hxx>
#include <StlMesh_MeshTriangle.hxx>
#include <TColgp_SequenceOfXYZ.hxx>

struct gmio_stl_mesh_occmesh : public gmio_stl_mesh
{
    gmio_stl_mesh_occmesh();
    explicit gmio_stl_mesh_occmesh(const StlMesh_Mesh* mesh);
    explicit gmio_stl_mesh_occmesh(const Handle_StlMesh_Mesh& hnd);

    inline const StlMesh_Mesh* mesh() const { return m_mesh; }

private:
    static void get_triangle(
            const void* cookie, uint32_t tri_id, gmio_stl_triangle* tri);

    void init_C_members();
    void init_cache();

    struct triangle_data
    {
        const StlMesh_MeshTriangle* ptr_triangle;
        const TColgp_SequenceOfXYZ* ptr_vec_vertices;
    };

    const StlMesh_Mesh* m_mesh;
    int m_mesh_domain_count;

    // Data to be used when mesh domain_count > 1
    std::vector<triangle_data> m_vec_triangle_data;
    // Data to be used when mesh domain_count == 1
    const StlMesh_SequenceOfMeshTriangle* m_seq_triangle;
    const TColgp_SequenceOfXYZ* m_seq_vertex;
};

gmio_stl_mesh_creator gmio_stl_occmesh_creator(StlMesh_Mesh* mesh);

gmio_stl_mesh_creator gmio_stl_occmesh_creator(const Handle_StlMesh_Mesh& hnd);

#endif /* GMIO_SUPPORT_STL_OCC_MESH_H */