added Blend.h and supported it.

2023-07-11 18:48:55 +08:00
parent ca74184d39
commit 713a9f98b3
3 changed files with 530 additions and 431 deletions
--- a/inc/hgl/2d/Bitmap.h
+++ b/inc/hgl/2d/Bitmap.h
@@ -6,106 +6,109 @@
 #include<iterator>
 namespace hgl
 {
-    template<typename T> 
-    static void FillPixels(T *p,const T &color,const int length)
+    namespace bitmap
    {
-        std::fill_n(p,length,color);
-    }
-
-    /**
-     * 简单的2D象素处理
-     */
-    template<typename T> class Bitmap
-    {
-        int width,height;
-
-        T *data;
-
-    public:
-
-        Bitmap()
+        template<typename T> 
+        static void FillPixels(T *p,const T &color,const int length)
        {
-            data=nullptr;
-            width=height=0;
+            std::fill_n(p,length,color);
        }

-        ~Bitmap()
+        /**
+         * 简单的2D象素处理
+         */
+        template<typename T> class Bitmap
        {
-            delete[] data;
-        }
+            int width,height;

-        const int  GetWidth         ()const{return width;}
-        const int  GetHeight        ()const{return height;}
-        const uint GetTotalPixels   ()const{return width*height;}
-        const uint GetLineBytes     ()const{return width*sizeof(T);}
-        const uint GetTotalBytes    ()const{return width*height*sizeof(T);}
+            T *data;

-        T *GetData(){return data;}
-        T *GetData(int x,int y)
-        {
-            return (x<0||x>=width||y<0||y>=height)?nullptr:data+(y*width+x);
-        }
+        public:

-        bool Create(uint w,uint h)
-        {
-            if(!w||!h)return(false);
-
-            if(data)
+            Bitmap()
            {
-                if(width==w&&height==h)return(true);
+                data=nullptr;
+                width=height=0;
            }

-            width=w;
-            height=h;
-
-            delete[] data;
-
-            data=new T[width*height];
-
-            return(true);
-        }
-
-        void Clear()
-        {
-            if(data)
+            ~Bitmap()
            {
                delete[] data;
-                data=nullptr;
            }

-            width=height=0;
-        }
+            const int  GetWidth         ()const{return width;}
+            const int  GetHeight        ()const{return height;}
+            const uint GetTotalPixels   ()const{return width*height;}
+            const uint GetLineBytes     ()const{return width*sizeof(T);}
+            const uint GetTotalBytes    ()const{return width*height*sizeof(T);}

-        void ClearColor(const T &color)
-        {
-            if(!data)return;
-    
-            FillPixels<T>(data,color,width*height);
-        }
-
-        void Flip()
-        {
-            if(!data||height<=1)return;
-
-            const uint line_bytes=width*sizeof(T);
-
-            T *temp=new T[width];
-
-            T *top=data;
-            T *bottom=data+(width*(height-1));
-
-            while(top<bottom)
+            T *GetData(){return data;}
+            T *GetData(int x,int y)
            {
-                memcpy(temp,top,line_bytes);
-                memcpy(top,bottom,line_bytes);
-                memcpy(bottom,temp,line_bytes);
-
-                top+=width;
-                bottom-=width;
+                return (x<0||x>=width||y<0||y>=height)?nullptr:data+(y*width+x);
            }

-            delete[] temp;
-        }
-    };//template<typename T> class Bitmap
+            bool Create(uint w,uint h)
+            {
+                if(!w||!h)return(false);
+
+                if(data)
+                {
+                    if(width==w&&height==h)return(true);
+                }
+
+                width=w;
+                height=h;
+
+                delete[] data;
+
+                data=new T[width*height];
+
+                return(true);
+            }
+
+            void Clear()
+            {
+                if(data)
+                {
+                    delete[] data;
+                    data=nullptr;
+                }
+
+                width=height=0;
+            }
+
+            void ClearColor(const T &color)
+            {
+                if(!data)return;
+    
+                FillPixels<T>(data,color,width*height);
+            }
+
+            void Flip()
+            {
+                if(!data||height<=1)return;
+
+                const uint line_bytes=width*sizeof(T);
+
+                T *temp=new T[width];
+
+                T *top=data;
+                T *bottom=data+(width*(height-1));
+
+                while(top<bottom)
+                {
+                    memcpy(temp,top,line_bytes);
+                    memcpy(top,bottom,line_bytes);
+                    memcpy(bottom,temp,line_bytes);
+
+                    top+=width;
+                    bottom-=width;
+                }
+
+                delete[] temp;
+            }
+        };//template<typename T> class Bitmap
+    }//namespace bitmap
 }//namespace hgl
 #endif//HGL_2D_BITMAP_INCLUDE