*修改代码结构

1 files changed, 17 insertions, 3 deletions

diff --git a/src/libjin/Graphics/je_bitmap.cpp b/src/libjin/Graphics/je_bitmap.cpp
index 711b8b5..cdab46d 100644
--- a/src/libjin/Graphics/je_bitmap.cpp
+++ b/src/libjin/Graphics/je_bitmap.cpp
@@ -56,6 +56,20 @@ namespace JinEngine
 			return bitmap;
 		}
 
+        /*static*/ Bitmap* Bitmap::createBitmap(int width, int height, std::function<Color(int, int, int, int)> drawer)
+        {
+            Bitmap* bitmap = new Bitmap(width, height);
+            for (int y = 0; y < height; ++y)
+            {
+                for (int x = 0; x < width; ++x)
+                {
+                    Color c = drawer(width, height, x, y);
+                    bitmap->setPixel(c, x, y);
+                }
+            }
+            return bitmap;
+        }
+
 		/*static */ Bitmap* Bitmap::clone(const Bitmap* bitmap)
 		{
 			Bitmap* b = new Bitmap();
@@ -78,7 +92,7 @@ namespace JinEngine
 			height = h; 
 			pixels = new Color[w*h];
             if (pixels == nullptr)
-                throw Exception("Not enough memory.");
+                throw Exception("No enough memory.");
 		}
 
 		Bitmap::~Bitmap()
@@ -110,8 +124,8 @@ namespace JinEngine
 
 		void Bitmap::setPixel(const Color& c, int x, int y)
 		{
-			if (pixels == nullptr)
-				return;
+            if (pixels == nullptr)
+                throw Exception("Bitmap don't have pixel space.");
 			if (without<int>(x, 0, width - 1) || without<int>(y, 0, height - 1))
 				return;
             if (x + y * width >= width * height)