#ifndef TMESHIMAGE_INCLUDED
#define TMESHIMAGE_INCLUDED

#include <memory>

// TnzCore includes
#include "tsmartpointer.h"
#include "tpersist.h"
#include "tgeometry.h"
#include "timage.h"

// tcg includes
#include "tcg_wrap.h"
#include "tcg/tcg_vertex.h"
#include "tcg/tcg_edge.h"
#include "tcg/tcg_face.h"
#include "tcg/tcg_mesh.h"
#include "tcg/tcg_mesh_bgl.h"

#undef DVAPI
#undef DVVAR
#ifdef TVECTORIMAGE_EXPORTS
#define DVAPI DV_EXPORT_API
#define DVVAR DV_EXPORT_VAR
#else
#define DVAPI DV_IMPORT_API
#define DVVAR DV_IMPORT_VAR
#endif

//===========================================

//    Forward declarations

//===========================================

//***********************************************************************************
//    TTextureVertex (Textured Mesh Vertex Type)  declaration
//***********************************************************************************

struct RigidPoint : public TPointD {
	double rigidity;

public:
	RigidPoint() : TPointD(), rigidity(1.0) {}
	explicit RigidPoint(double x, double y, double rigidity_ = 1.0)
		: TPointD(x, y), rigidity(rigidity_) {}
	explicit RigidPoint(const TPointD &point, double rigidity_ = 1.0)
		: TPointD(point), rigidity(rigidity_) {}

	RigidPoint &operator=(const TPointD &p)
	{
		TPointD::operator=(p);
		return *this;
	}

public:
	RigidPoint operator+(const RigidPoint &other) const
	{
		return RigidPoint(x + other.x, y + other.y, rigidity + other.rigidity);
	}

	RigidPoint &operator+=(const RigidPoint &other)
	{
		x += other.x, y += other.y, rigidity += other.rigidity;
		return *this;
	}

	RigidPoint operator-(const RigidPoint &other) const
	{
		return RigidPoint(x - other.x, y - other.y, rigidity - other.rigidity);
	}

	RigidPoint &operator-=(const RigidPoint &other)
	{
		x -= other.x, y -= other.y, rigidity -= other.rigidity;
		return *this;
	}

	friend RigidPoint operator*(double a, const RigidPoint &b)
	{
		return RigidPoint(a * b.x, a * b.y, a * b.rigidity);
	}

	friend RigidPoint operator*(const RigidPoint &a, double b)
	{
		return RigidPoint(a.x * b, a.y * b, a.rigidity * b);
	}

	RigidPoint &operator*=(double a)
	{
		x *= a, y *= a, rigidity *= a;
		return *this;
	}

	friend RigidPoint operator*(const TAffine &aff, const RigidPoint &p)
	{
		return RigidPoint(aff.operator*(p), p.rigidity);
	}
};

//-----------------------------------------------------------------------------

typedef tcg::Vertex<RigidPoint> TTextureVertex;

//=================================================================================

namespace tcg
{

template <>
struct point_traits<RigidPoint> {
	typedef RigidPoint point_type;
	typedef double value_type;
	typedef double float_type;

	inline static value_type x(const point_type &p) { return p.x; }
	inline static value_type y(const point_type &p) { return p.y; }
};

} // namespace tcg

//***********************************************************************************
//    TTextureMesh (Textured Mesh Type)  declaration
//***********************************************************************************

class DVAPI TTextureMesh : public tcg::TriMesh<TTextureVertex, tcg::Edge, tcg::FaceN<3>>, public TSmartObject, public TPersist
{
	PERSIST_DECLARATION(TTextureMesh)
	DECLARE_CLASS_CODE

public:
	TTextureMesh();

	TTextureMesh(const TTextureMesh &);
	TTextureMesh &operator=(const TTextureMesh &);

	int faceContaining(const TPointD &p) const;
	bool faceContains(int f, const TPointD &p) const;

	TRectD getBBox() const;

	void saveData(TOStream &os);
	void loadData(TIStream &is);
};

//-----------------------------------------------------------------------------

#ifdef _WIN32
template class DVAPI TSmartPointerT<TTextureMesh>;
#endif

typedef TSmartPointerT<TTextureMesh> TTextureMeshP;

//-----------------------------------------------------------------------------

namespace boost
{

template <>
struct graph_traits<TTextureMesh>
	: public graph_traits<tcg::Mesh<TTextureMesh::vertex_type,
									TTextureMesh::edge_type,
									TTextureMesh::face_type>> {
};

} // namespace boost

//***********************************************************************************
//    TMeshImage (Textured Mesh Image)  declaration
//***********************************************************************************

class DVAPI TMeshImage : public TImage
{
	class Imp;
	std::shared_ptr<Imp> m_imp;

public:
	typedef std::vector<TTextureMeshP> meshes_container;

public:
	TMeshImage();
	TMeshImage(std::shared_ptr<Imp> imp);
	~TMeshImage();

	TMeshImage(const TMeshImage &other);
	TMeshImage &operator=(TMeshImage other);

	TImage::Type getType() const { return TImage::MESH; }

	TRectD getBBox() const;
	TImage *cloneImage() const;

	void getDpi(double &dpix, double &dpiy) const;
	void setDpi(double dpix, double dpiy);

	const meshes_container &meshes() const;
	meshes_container &meshes();

	friend void swap(TMeshImage &a, TMeshImage &b)
	{
		std::swap(a.m_imp, b.m_imp);
	}
};

//-----------------------------------------------------------------------------

#ifdef _WIN32
template class DVAPI TSmartPointerT<TMeshImage>;
template class DVAPI TDerivedSmartPointerT<TMeshImage, TImage>;
#endif

class DVAPI TMeshImageP : public TDerivedSmartPointerT<TMeshImage, TImage>
{
public:
	TMeshImageP() {}
	TMeshImageP(TMeshImage *image) : DerivedSmartPointer(image) {}
	TMeshImageP(TImageP image) : DerivedSmartPointer(image) {}
#if !defined(_WIN32)
	TMeshImageP(TImage *image) : DerivedSmartPointer(TImageP(image))
	{
	}
#endif
	operator TImageP()
	{
		return TImageP(m_pointer);
	}
};

#endif // TMESHIMAGE_INCLUDED