How joining two Polygon_with_holes_2 on cgal

Question

I have two polygons (Polygon_with_holes_2) how joining it into thirth Polygon_with_holes_2

I need general solution. Get any polygon_with_holes (or not if empty hole list but still polygon_with_holes structures) and joining it with other and get polygon_with_holes. How check orientation (cgal not can joining if it not good), reducing points etc. How to do this with good code without memory leak.

Helmick

Have you tried to read any sort of documentation, doc.cgal.org/latest/Boolean_set_operations_2/… and without your code you are expecting us to be Yoda!! – Guidebook

@Frrank on docummentation no exist any example with Polygon_with_holes_2 If You clever show me. – Helmick

At least in this example boolean operation is done on polygon with holes. – Prady

@Prady You are clever.Thanks, I search this a few day. I cant vote Your ansver, sorry – Helmick

How defining Polygon_with_holes_2 without any holes? Empty? Polygon_2 outP; Polygon_2 holesP[1]; outP.push_back (Point_2 (0, 0));.... 4 point Polygon_with_holes_2 P (outP, holesP, holesP + 1); i get Explanation: Holes of the PWH intersect amongst themselves or with outer boundary Refer to the bug-reporting instructions at cgal.org/bug_report.html terminate called after throwing an instance of 'CGAL::Precondition_exception' what(): CGAL ERROR: precondition violation! Expr: is_valid_unknown_polygon(p, t) – Asthma

@Please share the code that show how you are creating the polygon. Then we can talk about boolean on the polygon. – Cassius