Current Progress: CGAL lib and Curve Editor

Just successfully got the output of union operation for two polygons using CGAL.

experimental results:

                                                     original polygons

                                                   union operator

                                                      intersection operator

                                                     subtraction operator

Some tips:

The variable <Number_type> in the examples should be specified, and float is working well.

The points composing the polygons should be arranged counter clockwise in the x-y plane, or the program will crash down.

CGAL Polygon_2 class could close a polygon automatically, which means we do not have to reload the starting point as the ending point.

The input type of union operation should be Polygon_2, while the output should be Polygon_with_holes_2.

The type of Polygon_2 is actually a list, so [] operator is very convenient. However, Polygon_with_holes_2 is much more complex, and the member function outer_boundary() could get the result as Polygon_2 for further conversion to vec3 and curve editor drawer.

Something annoying is that, IntelliSence does not work for this project. oops...

Cheers, let's carry on to more excitement!