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#ifndef __PATHTRACER_MESH__HPP__

#define __PATHTRACER_MESH__HPP__

#include "luminaire.hpp"

#include "material.hpp"

namespace Geometry { class TriMesh; class IndexedFaceSet; }

class mesh : public luminaire

{

public:

	//ctor

	mesh(void);

	mesh(const std::string&);

	~mesh(void);

	//geometry

	const Geometry::TriMesh& get_trimesh(void) const;

	void set_trimesh(const Geometry::TriMesh&);

	const CGLA::Vec3f& triangle_normal(size_t i) const;

	//material

	const material* get_material(void) const;

	void set_material(const material*);

	//exitance (W/m2) (assuming diffuse emission)

	CGLA::Vec3f exitance(void) const;

	void set_exitance(const CGLA::Vec3f&);

	//sampling of mesh luminaire

	bool sample(const ray&, const hit_info&, CGLA::Vec3f& L, 

		CGLA::Vec3f& w) const;

protected:

	Geometry::TriMesh* msh_;

	std::vector<CGLA::Vec3f> triangle_normals_;

	Geometry::IndexedFaceSet* tangents_;

	const material* mat_;

	CGLA::Vec3f exitance_;

};

#endif

//02566 framework, Anders Wang Kristensen, awk@imm.dtu.dk, 2007