getBounds abstract method
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.
// see https://skia.org/user/api/SkPath_Reference#SkPath_getBounds Rect getBounds();