getBoundBox method
Implementation
Rect getBoundBox() {
num left = x;
num right = x;
num top = y;
num bottom = y;
this.each((node, index, startNode) {
left = min(left, node.x);
top = min(top, node.y);
right = max(right, node.x);
bottom = max(bottom, node.y);
return false;
});
return Rect.fromLTRB(left.toDouble(), top.toDouble(), right.toDouble(), bottom.toDouble());
}