apply method
- Rect base
base displaced by the current delta: shifted by offset, scaled
about its center by scaleX and scaleY.
Implementation
Rect apply(Rect base) {
if (isIdentity) {
return base;
}
return .fromCenter(
center: base.center + _offset,
width: base.width * _scaleX,
height: base.height * _scaleY,
);
}