message: Use frame.x|y in getImageData call for CanvasExtract
diff: @@ -158,7 +158,12 @@ export class CanvasExtract
  frame.height = renderer.height;
  }
  - return context.getImageData(0, 0, frame.width * resolution, frame.height * resolution).data;
  + const x = frame.x * resolution;
  + const y = frame.y * resolution;
  + const width = frame.width * resolution;
  + const height = frame.height * resolution;
  +
  + return context.getImageData(x, y, width, height).data;
  }
  /**
  