104 lines
4.7 KiB
C
104 lines
4.7 KiB
C
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#ifndef HGL_GRAPH_TILE_DATA_INCLUDE
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#define HGL_GRAPH_TILE_DATA_INCLUDE
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#include<hgl/graph/TextureFormat.h>
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namespace hgl
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{
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namespace graph
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{
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class Texture2D;
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class Renderable;
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class Bitmap2D;
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/**
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* TileData是一种处理将大量等同贴图的管理机制，程序会自动根据显卡最大贴图处理能力来创建尽可能符合的贴图。(注意:Tile的宽高不必是2的幂)。<br>
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* Tile的增加删除，程序会做自动排序，尽可能小的影响效能。
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*/
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class TileData ///Tile数据管理
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{
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public:
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struct Object ///Tile对象
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{
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int index;
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double fl,ft;
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double fw,fh;
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int width,height;
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};
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protected:
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Texture2D *tile_texture; ///<Tile所用贴图
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TileData::Object **tile_object; ///<所有Tile对象指针
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int tile_width,tile_height; ///<tile的宽和高
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int tile_count,tile_total; ///<当前tile数量与最大数量
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int tile_rows,tile_cols; ///<贴图中可用的tile行数和列数
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protected:
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int FindSpace(); ///<寻找一个空位
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void WriteTile(int,TileData::Object *,void *,unsigned int,TextureSourceFormat,int,int); ///<写入一个Tile
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public:
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int GetWidth ()const{return tile_width;} ///<取得Tile宽
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int GetHeight ()const{return tile_height;} ///<取得Tile高
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int GetCount ()const{return tile_count;} ///<取得Tile数量
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int GetMaxCount ()const{return tile_total;} ///<取得Tile最大数量
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int GetFreeCount()const{return tile_total-tile_count;} ///<取得空余Tile数量
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Texture2D * GetTexture ()const{return tile_texture;} ///<取得贴图
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public:
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TileData(int,int,int, TextureSourceFormat);
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virtual ~TileData();
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TileData::Object *Add(void *,unsigned int,TextureSourceFormat,int=-1,int=-1); ///<增加一个Tile
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bool Delete(TileData::Object *); ///<删除一个Tile
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bool Change(TileData::Object *,void *,unsigned int,TextureSourceFormat,int=-1,int=-1); ///<更改一个Tile的数据内容
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void Clear(); ///<清除Tile数据
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};//class TileData
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template<typename T> class VertexBuffer2;
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/**
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* 渲染Tile为一个2D矩形数据到顶点缓冲区上
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* @param obj 要渲制的Tile对象
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* @param vertex 渲染到的2d顶点坐标缓冲区
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* @param tex_coord 渲染到的贴图坐标缓冲区
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* @param left 显示的左边界
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* @param top 显示的上边界
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* @param scale_width 宽度缩放比
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* @param scale_height 高度缩放比
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*/
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template<typename T1,typename T2>
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__inline void RenderToVB2DRect( VertexBuffer2<T1> *vertex,
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VertexBuffer2<T2> *tex_coord,
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const TileData::Object *obj,
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const float left,
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const float top,
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const float scale_width=1.0f,
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const float scale_height=1.0f)
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{
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if(!obj||!vertex||!tex_coord)return;
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tex_coord->WriteRect( obj->fl,
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obj->ft,
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obj->fw,
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obj->fh);
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vertex->WriteRect( left,
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top,
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scale_width*float(obj->width),
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scale_height*float(obj->height));
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}
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}//namespace graph
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}//namespace hgl
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#endif//HGL_GRAPH_TILE_DATA_INCLUDE
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