sky/examples/raw/custom_paint_without_element.sky

<script>
import "dart:math";
import 'dart:sky';

void main() {
  double width = window.innerWidth.toDouble();
  double height = window.innerHeight.toDouble();

  PictureRecorder recorder = new PictureRecorder(width, height);
  double radius = min(width, height) * 0.45;

  Paint paint = new Paint()..setARGB(255, 0, 255, 0);

  recorder.drawCircle(width / 2, height / 2, radius, paint);

  document.rootPicture = recorder.endRecording();
}
</script>