I've had customers ask how they can get access to the geometry displayed by a HOOPS cutting plane as it intersects geometric objects.
HOOPS provides a function that will return you a HC_KEY for the cutting plane geometry:
void HImCuttingGeometry::CreateCuttingGeometry(HC_KEY source_key, HC_KEY target_key, bool honor_modelling_matrices)
It retrieves all capping geometry below the source_key and dumps it into the target_key. If the final argument is true, modelling matrices will be applied to the resultant geometry in order to move them to the same location in world space as their sources.
