scaleY property

double get scaleY

Derived Y scale (convenience accessor).

This derives the sign from the matrix determinant and scaleX, so reflections may be represented as a 180° rotation + negative Y scale.

Implementation

double get scaleY {
  final sx = scaleX;
  if (sx == 0) return 0;
  final det = transform.a * transform.d - transform.b * transform.c;
  return det / sx;
}

set scaleY (double value)

Implementation

set scaleY(double value) {
  transform = Transform2D.trs(
    translation: position,
    rotationDeg: rotationDeg,
    scaleX: scaleX,
    scaleY: value,
  );
}