I see what you mean. For this project, true offset isn't important. Resizing is perfect. Is there a built in function for resizing?
Steve On Fri, May 4, 2012 at 2:10 PM, Stephen Woodbridge <[email protected]>wrote: > On 5/4/2012 11:26 AM, Steve Nelson wrote: > >> Does anyone have a function that can create an offset polygon? >> >> In other words, if I have a polygon made up of 5 points have the same >> polygon shape, just a larger size? >> > > Hi Steve, > > These are not the same thing. > > If you want the same shape only larger then you are looking a scale. > If you want and offset, this is MUCH more complicated because you have to > deal with changes in topology, like if you have a small V shape then you > offset might cause these to be removed like: > > ----------------- offset > > ------\ /------- curve > \/ > > or if your polygon has a hole then an offset could result in a smaller > hole or with the hole getting filled in and removed. There are many cases > like this. These are just a couple of examples to give you the idea. > > So what DO you need? Resizing via scale is easy, True offset is hard! > > -Steve W > ______________________________**_________________ > Users mailing list > [email protected] > http://lists.osgeo.org/**mailman/listinfo/openlayers-**users<http://lists.osgeo.org/mailman/listinfo/openlayers-users> >
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