transformPosition method

Offset transformPosition (Matrix4 transform, Offset position)

Returns the transformation of position into the coordinate system described by transform.

The z-value of position is assumed to be 0.0. If transform is null, position is returned as-is.

Implementation

static Offset transformPosition(Matrix4 transform, Offset position) {
  if (transform == null) {
    return position;
  }
  final Vector3 position3 = Vector3(position.dx, position.dy, 0.0);
  final Vector3 transformed3 = transform.perspectiveTransform(position3);
  return Offset(transformed3.x, transformed3.y);
}