lerp method

Interpolates between this transform and another.

Implementation

ZoomTransform lerp(ZoomTransform other, double t) {
  return ZoomTransform(
    scale: scale + (other.scale - scale) * t,
    translateX: translateX + (other.translateX - translateX) * t,
    translateY: translateY + (other.translateY - translateY) * t,
  );
}