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#ifndef __PATHTRACER_MESH__H__
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#define __PATHTRACER_MESH__H__
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#include "luminaire.h"
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#include "material.h"
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namespace Geometry { class TriMesh; class IndexedFaceSet; }
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class mesh : public luminaire
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{
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public:
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    //ctor
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    mesh(void);
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    mesh(const std::string&);
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    ~mesh(void);
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    //geometry
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    const Geometry::TriMesh& get_trimesh(void) const;
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    void set_trimesh(const Geometry::TriMesh&);
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    const CGLA::Vec3f& triangle_normal(size_t i) const;
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    //material
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    const material* get_material(void) const;
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    void set_material(const material*);
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    //exitance (W/m2) (assuming diffuse emission)
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    CGLA::Vec3f exitance(void) const;
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    void set_exitance(const CGLA::Vec3f&);
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    //sampling of mesh luminaire
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    bool sample(const ray&, const hit_info&, CGLA::Vec3f& L,
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        CGLA::Vec3f& w) const;
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protected:
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    Geometry::TriMesh* msh_;
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    std::vector<CGLA::Vec3f> triangle_normals_;
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    Geometry::IndexedFaceSet* tangents_;
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    const material* mat_;
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    CGLA::Vec3f exitance_;
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};
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#endif
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//02566 framework, Anders Wang Kristensen, awk@imm.dtu.dk, 2007