setScale method

void setScale(
  1. double factor,
  2. Offset focalPoint
)

Implementation

void setScale(double factor, Offset focalPoint) {
  _offset = Offset(
    focalPoint.dx * (1 - factor),
    focalPoint.dy * (1 - factor),
  );
  scale = factor;

  for (final listener in _onScaleUpdateListeners) {
    listener(scale);
  }
  notifyListeners();
}