/// <summary>
/// Returns a csg consisting of the polygons of this csg and the specified csg.
///
/// The purpose of this method is to allow fast union operations for objects that do not intersect.
///
/// </summary>
///
/// <p>
/// <b>WARNING:</b> this method does not apply the csg algorithms. Therefore, please ensure that this csg and the
/// specified csg do not intersect.
///
/// <param name="csg">csg</param>
///
/// <returns>a csg consisting of the polygons of this csg and the specified csg</returns>
///
public CSG dumbUnion(CSG csg)
{
CSG result = this.clone();
CSG other = csg.clone();
result.polygons.AddRange(other.polygons);
return(result);
}
private CSG _unionNoOpt(CSG csg)
{
Node a = new Node(this.clone().polygons);
Node b = new Node(csg.clone().polygons);
a.clipTo(b);
b.clipTo(a);
b.invert();
b.clipTo(a);
b.invert();
a.build(b.allPolygons());
return(CSG.fromPolygons(a.allPolygons()).optimization(getOptType()));
}
