Re: Polygon with holes
- To: mathgroup at smc.vnet.net
- Subject: [mg97326] Re: [mg97290] Polygon with holes
- From: Frank Scherbaum <fscherbaum at mac.com>
- Date: Wed, 11 Mar 2009 04:21:43 -0500 (EST)
- References: <200903101034.FAA09944@smc.vnet.net>
HK Am 10.03.2009 um 11:34 schrieb Harrie Kraai: > Hi group, > > Does anyone know of a facility for Polygons (graphics) with holes > inside? > I guess there is no such thing as an oriented polygon in Mathematica? > Or a polygon consisting of disjoint lines (inner and outer contours, > clockwise and counterclockwise)? > > I can see that it is possible to connect outer and inner contours > using > a dummy line, but that is not so easy to program in a generic way. > > Solutions such as creating an artificial hole by another Polygon in > the > background colour are not really acceptable. > > Polygon's with holes would be very useful for maps etc. > > Sincerely > > HK > general you may find the general polygon clipping library of interest for your purpose. It can deal with polygons with holes. http://www.cs.man.ac.uk/~toby/alan/software/ Cheers, Frank
- References:
- Polygon with holes
- From: Harrie Kraai <hakraai@xs4all.nl>
- Polygon with holes