YiSpriteSheet.h

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// © You i Labs Inc. 2000-2017. All rights reserved.
#ifndef _YI_SPRITE_SHEET_H_
#define _YI_SPRITE_SHEET_H_

#include "asset/YiAssetTexture.h"
#include "framework/YiPredef.h"

#include <glm/mat3x3.hpp>

class CYIMaterial;
class CYIMesh;

class SpriteSheet
{
    public:

        SpriteSheet(const std::shared_ptr<CYIAssetTexture> &pTextureAsset, float fSubimageWidth, float fSubimageHeight);
        ~SpriteSheet();
        
        void DisplayFrame(int32_t nIndex);

        const std::shared_ptr<CYIMesh> &GetMesh() const;
        const std::shared_ptr<CYIMaterial> GetMaterial() const;

    private:
        std::shared_ptr<CYIAssetTexture> m_TextureAsset;
        float m_fSubimageWidth;
        float m_fSubimageHeight;
        uint32_t m_uImageMapWidth;
        uint32_t m_uImageMapHeight;

        std::shared_ptr<CYIMesh> m_pMesh;
        std::shared_ptr<CYIMaterial> m_pMaterial;

        glm::mat3 CalculateTextureMatrix(int32_t nIndex);
};

#endif // _YI_SPRITE_SHEET_H_