Data commit

Task/Bitmap/Wren/bitmap.wren

@@ -0,0 +1,34 @@
+import "graphics" for Canvas, ImageData, Color
+import "dome" for Window
+
+class Game {
+    static bmpCreate(name, w, h) { ImageData.create(name, w, h) }
+
+    static bmpFill(name, col) {
+        var image = ImageData[name]
+        for (x in 0...image.width) {
+            for (y in 0...image.height) image.pset(x, y, col)
+        }
+    }
+
+    static bmpPset(name, x, y, col) { ImageData[name].pset(x, y, col) }
+
+    static bmpPget(name, x, y) { ImageData[name].pget(x, y) }
+
+    static init() {
+        Window.title = "Bitmap"
+        var size = 600
+        Window.resize(size, size)
+        Canvas.resize(size, size)
+        var bmp = bmpCreate("rcbmp", size/2, size/2)
+        bmpFill("rcbmp", Color.yellow)
+        bmpPset("rcbmp", size/4, size/4, Color.blue) // 'blue' is #29ADFF on the default palette
+        var col = bmpPget("rcbmp", size/4, size/4)
+        System.print(col.toString) // check it's blue - alpha component (FF) will also be shown
+        bmp.draw(150, 150)
+    }
+
+    static update() {}
+
+    static draw(alpha) {}
+}