Hi Alan, that is great - the new code has the advantage of not involving a large number of cases and convoluted computations, even though it is still not trivial (understatement ;)), so that it ought to be easier to maintain. I have sketched a nice polygon and will implement in example 25 somewhere this week.
Regards, Arjen On 2009-12-22 03:40, Alan W. Irwin wrote: > On 2009-12-16 08:45+0100 Arjen Markus wrote: > >> - The implementation may benefit (become simpler) if you can guarantee >> that the polygons are oriented in the same way (both clockwise for >> instance). > > Hi Arjen (on list reply to your comment): > > I originally thought polygons with the same orientation (see > http://en.wikipedia.org/wiki/Curve_orientation) would not simplify the > logic, but I was incorrect so thanks very much for this idea which I have > just implemented (revision 10727). That and other fixes mean > that pages 1 and 2 of example 25 now render correctly with > -DFILL_INTERSECTION_POLYGON=ON. > > There are additional -DFILL_INTERSECTION_POLYGON=ON issues for page 3 and > above of example 25, but I feel I am finally beginning to get close to the > end of this mini-project. > > Alan > > __________________________ > Alan W. Irwin > > Astronomical research affiliation with Department of Physics and Astronomy, > University of Victoria (astrowww.phys.uvic.ca). > > Programming affiliations with the FreeEOS equation-of-state implementation > for stellar interiors (freeeos.sf.net); PLplot scientific plotting software > package (plplot.org); the libLASi project (unifont.org/lasi); the Loads of > Linux Links project (loll.sf.net); and the Linux Brochure Project > (lbproject.sf.net). > __________________________ > > Linux-powered Science > __________________________ > ------------------------------------------------------------------------------ This SF.Net email is sponsored by the Verizon Developer Community Take advantage of Verizon's best-in-class app development support A streamlined, 14 day to market process makes app distribution fast and easy Join now and get one step closer to millions of Verizon customers http://p.sf.net/sfu/verizon-dev2dev _______________________________________________ Plplot-devel mailing list Plplot-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/plplot-devel
