TextureUnit.h
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TextureUnit.h
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	#ifndef _ECHOTEXTUREUNIT_H_
	#define _ECHOTEXTUREUNIT_H_

	#include <echo/Types.h>
	#include <echo/Graphics/Texture.h>
	#include <echo/Graphics/BlendMode.h>
	#include <echo/Maths/Matrix4.h>

	namespace Echo
	{
	class TextureUnit
	{
	public:
	struct TextureWrapModes
	{
	enum TextureWrapModeEnum{ CLAMP=0,
	CLAMP_TO_EDGE=1,
	REPEAT=2};
	};
	typedef TextureWrapModes::TextureWrapModeEnum TextureWrapMode;

	struct TextureGenerationModes
	{
	enum _
	{
	NONE=0,
	LINEAR=1,
	EYE_LINEAR=2,
	SPHERE=3,
	CUBE=4
	};
	};
	typedef TextureGenerationModes::_ TextureGenerationMode;

	struct TextureGenerationModeSet
	{
	struct TextureGenerationData
	{
	TextureGenerationData(){}
	virtual ~TextureGenerationData(){}
	};
	struct PlaneData : public TextureGenerationData
	{
	PlaneData() : a(0), b(0), c(1.0f), d(0){}
	~PlaneData(){}
	float a;
	float b;
	float c;
	float d;
	};
	TextureGenerationModeSet() : mMode(TextureGenerationModes::NONE){}
	~TextureGenerationModeSet(){}
	TextureGenerationMode mMode;
	PlaneData mQPlaneData;
	PlaneData mRPlaneData;
	PlaneData mSPlaneData;
	PlaneData mTPlaneData;
	};

	struct TextureFilters
	{
	enum _
	{
	NEAREST=0,
	LINEAR=1
	};
	};
	typedef TextureFilters::_ TextureFilter;

	TextureUnit();
	~TextureUnit();

	bool HasTexture() const {return !!mTexture;}

	shared_ptr<Texture> GetTexture() const {return mTexture;}
	size_t GetTextureUnitSetToUse() const {return mTextureUnitSetToUse;}
	const LayerBlendModeEx& GetBlendMode() const { return mBlendMode; }
	const LayerBlendModeEx& GetAlphaBlendMode() const { return mAlphaBlendMode; }
	const TextureWrapMode& GetWrapModeU() const { return mWrapModeU; }
	const TextureWrapMode& GetWrapModeV() const { return mWrapModeV; }
	const TextureFilter& GetMinFilter() const { return mMinFilter; }
	const TextureFilter& GetMagFilter() const { return mMagFilter; }
	const Matrix4& GetTextureMatrix() const {return mTextureMatrix;}
	const TextureGenerationModeSet& GetTexGenMode() const {return mTexGenMode;}
	Vector3 GetRotationSpeed() const {return mRotationSpeed;}
	f32 GetVScaleSpeed() const {return mVScaleSpeed;}
	f32 GetUScaleSpeed() const {return mUScaleSpeed;}
	f32 GetVScrollSpeed() const {return mVScrollSpeed;}
	f32 GetUScrollSpeed() const { return mUScrollSpeed;}

	void SetTexture(shared_ptr<Texture> texture){mTexture=texture;}
	void SetTextureUnitSetToUse(size_t textureUnitSetToUse) {mTextureUnitSetToUse = textureUnitSetToUse;}
	void SetTextureMatrix(const Matrix4& m) {mTextureMatrix=m;}
	void SetBlendMode(const LayerBlendModeEx& val) { mBlendMode = val; }
	void SetAlphaBlendMode(const LayerBlendModeEx& val) { mAlphaBlendMode = val; }
	void SetWrapModeU(const TextureWrapMode& val) { mWrapModeU = val; }
	void SetWrapModeV(const TextureWrapMode& val) { mWrapModeV = val; }
	void SetWrapMode(const TextureWrapMode& val)
	{
	SetWrapModeU(val);
	SetWrapModeV(val);
	}
	void SetMinFilter(const TextureFilter& val) { mMinFilter = val; }
	void SetMagFilter(const TextureFilter& val) { mMagFilter = val; }

	void SetFilter(const TextureFilter& val)
	{
	SetMinFilter(val);
	SetMagFilter(val);
	}
	void SetTexGenMode(TextureGenerationModeSet texGenMode) {mTexGenMode=texGenMode;}
	void SetRotationSpeed(Vector3 rotationSpeed) {mRotationSpeed = rotationSpeed;}
	void SetVScaleSpeed(f32 vScaleSpeed){mVScaleSpeed = vScaleSpeed;}
	void SetUScaleSpeed(f32 uScaleSpeed){mUScaleSpeed = uScaleSpeed;}
	void SetVScrollSpeed(f32 vScrollSpeed) {mVScrollSpeed = vScrollSpeed;}
	void SetUScrollSpeed(f32 uScrollSpeed) {mUScrollSpeed = uScrollSpeed;}

	private:
	shared_ptr<Texture> mTexture;
	LayerBlendModeEx mBlendMode; //These blend modes aren't used if a fragment shader is used.
	LayerBlendModeEx mAlphaBlendMode;
	TextureWrapMode mWrapModeU;
	TextureWrapMode mWrapModeV;
	TextureFilter mMinFilter;
	TextureFilter mMagFilter;
	TextureGenerationModeSet mTexGenMode;
	size_t mTextureUnitSetToUse;
	bool mUseTransformForStipAnimation;
	Matrix4 mTextureMatrix;
	f32 mUScrollSpeed;
	f32 mVScrollSpeed;
	f32 mUScaleSpeed;
	f32 mVScaleSpeed;
	Vector3 mRotationSpeed;
	};
	}
	#endif

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