cgal_intersect

syntax

cgal_intersect(polygon_data_item1, polygon_data_item2)

description

cgal_intersect(polygon_data_item1, polygon_data_item2) results in a data item with the intersection of the two polygon arguments. The result contains, for each element, the area that both polygon arguments have in common.

The operator is applied element-by-element. Both domains need to match, or one of the arguments needs to be a parameter (void domain).

The cgal_ prefix of the function name indicates that the implementation of the operator uses CGAL, which provides exact predicates and exact constructions for maximum numerical precision.

applies to

attribute polygon_data_item1 with a polygon value type
attribute polygon_data_item2 with a polygon value type

The value types of both arguments must be compatible (same point type).

conditions

The composition type of both arguments needs to be polygon.
The domains of the two arguments must match, or one argument must have a void domain (parameter).

since version

14.0

example

attribute<dpoint> geometry_intersection (district) := cgal_intersect(district/geometry, municipality/geometry);