convertPointToBoxSpace method
Converts a point from the local coordinate system of the node to the coordinate system of the SpriteBox.
var pointInBoxCoordinates =
myNode.convertPointToBoxSpace(localPoint);
Implementation
Offset convertPointToBoxSpace(Offset nodePoint) {
assert(_spriteBox != null);
Vector4 v = _nodeToBoxMatrix()
.transform(Vector4(nodePoint.dx, nodePoint.dy, 0.0, 1.0));
return Offset(v[0], v[1]);
}