[OpenLayers-Users] offset polygon

[Steve Nelson]

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
<woodbri at swoodbridge.com>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
> Users at lists.osgeo.org
> http://lists.osgeo.org/**mailman/listinfo/openlayers-**users<http://lists.osgeo.org/mailman/listinfo/openlayers-users>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://lists.osgeo.org/pipermail/openlayers-users/attachments/20120504/ed7cf607/attachment.html