getBounds method

Rect getBounds ()

Computes the bounding rectangle for this path.

A path containing only axis-aligned points on the same straight line will have no area, and therefore Rect.isEmpty will return true for such a path. Consider checking rect.width + rect.height > 0.0 instead, or using the computeMetrics API to check the path length.

For many more elaborate paths, the bounds may be inaccurate. For example, when a path contains a circle, the points used to compute the bounds are the circle's implied control points, which form a square around the circle; if the circle has a transformation applied using transform then that square is rotated, and the (axis-aligned, non-rotated) bounding box therefore ends up grossly overestimating the actual area covered by the circle.

Implementation 

// see https://skia.org/user/api/SkPath_Reference#SkPath_getBounds
Rect getBounds() {
  final Float32List rect = _getBounds();
  return new Rect.fromLTRB(rect[0], rect[1], rect[2], rect[3]);
}