stl_occ_mesh.h

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

#pragma once

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

#include <BRepBuilderAPI_CellFilter.hxx>
#include <BRepBuilderAPI_VertexInspector.hxx>
#include <StlMesh_Mesh.hxx>
#include <StlMesh_MeshTriangle.hxx>
#include <TColgp_SequenceOfXYZ.hxx>
#include <vector>

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

    const Handle_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();

    struct domain_data {
        std::vector<const gp_XYZ*> vec_coords;
    };

    struct triangle_data {
        const StlMesh_MeshTriangle* ptr_triangle;
        const domain_data* ptr_domain;
    };

    Handle_StlMesh_Mesh m_mesh;
    std::vector<domain_data> m_vec_domain_data;
    std::vector<triangle_data> m_vec_triangle_data;
};

struct gmio_stl_mesh_creator_occmesh : public gmio_stl_mesh_creator
{
    gmio_stl_mesh_creator_occmesh();
    explicit gmio_stl_mesh_creator_occmesh(const Handle_StlMesh_Mesh& hnd);

    const Handle_StlMesh_Mesh& mesh() const { return m_mesh; }

private:
    static void begin_solid(
            void* cookie, const struct gmio_stl_mesh_creator_infos* infos);
    static void add_triangle(
            void* cookie, uint32_t tri_id, const gmio_stl_triangle* tri);

    void init();
    int add_unique_vertex(const gmio_vec3f& v);

    Handle_StlMesh_Mesh m_mesh;
    BRepBuilderAPI_CellFilter m_filter;
    BRepBuilderAPI_VertexInspector m_inspector;
};