copy method
Copies another name
object to this instance.
Implementation
@override
CurvePath copy(Curve source) {
assert(source is CurvePath);
super.copy(source);
curves = [];
for (int i = 0, l = source.curves.length; i < l; i++) {
final curve = source.curves[i];
curves.add(curve.clone());
}
autoClose = source.autoClose;
return this;
}