Index: sky/examples/raw/spinning_square.dart |
diff --git a/sky/examples/raw/spinning_square.dart b/sky/examples/raw/spinning_square.dart |
new file mode 100644 |
index 0000000000000000000000000000000000000000..155f5ccc685d798a0cd0d786fb2f867685e4eb85 |
--- /dev/null |
+++ b/sky/examples/raw/spinning_square.dart |
@@ -0,0 +1,25 @@ |
+// Copyright 2015 The Chromium Authors. All rights reserved. |
+// Use of this source code is governed by a BSD-style license that can be |
+// found in the LICENSE file. |
+ |
+import 'dart:sky'; |
+ |
+double timeBase = null; |
+ |
+void beginFrame(double timeStamp) { |
+ if (timeBase == null) |
+ timeBase = timeStamp; |
+ double delta = timeStamp - timeBase; |
+ PictureRecorder canvas = new PictureRecorder(view.width, view.height); |
+ canvas.translate(view.width / 2.0, view.height / 2.0); |
+ canvas.rotateDegrees(delta / 10); |
+ canvas.drawRect(new Rect()..setLTRB(-100.0, -100.0, 100.0, 100.0), |
+ new Paint()..setARGB(255, 0, 255, 0)); |
+ view.picture = canvas.endRecording(); |
+ view.scheduleFrame(); |
+} |
+ |
+void main() { |
+ view.setBeginFrameCallback(beginFrame); |
+ view.scheduleFrame(); |
+} |