Syntax for Islands

Any extrusion with islands or cutouts will have a polygon count of 2 or more. The first polygon is, by definition, the parent and is treated as "dark." All subsequent polygons are children and cut away from the parent.

Rules

• The parent polygon may not self intersect or self-touch.

• A child polygon may not self intersect or self touch

• child polygons may not touch or overlap the parent

• child polygons may not touch or overlap each other.

• a circle can be used as a parent or as a child