Reverse Orientation Not Working

BrianBehling — Thu, 29 Jul 2010 20:04:54 GMT

I am trying to reverse the orientation of a polygon but this simple operation is not working.

Dim myPolygon as IPolygon
myPolygon.ReverseOrientation()

Is there an operation I have to perform on the polygon before I use the reverseOrientation function or something?

Re: Reverse Orientation Not Working

AndrewMay — Fri, 30 Jul 2010 07:04:08 GMT

Hi
No, there's nothing special you need to do. Have you seen the following example?

http://edndoc.esri.com/arcobjects/9.2/componenthelp/esrigeometry/ReverseOrientation_Example.htm

What are you expecting to see whe you reverse the order of your polygon? The node order determines whether a ring is an inner or outer ring. I'm not sure what goes on behind the scenes so it's possible that changing the order of a polygon might not have any affect for something like a simple polygon as Arc knows this must be an outer ring and so the nodes must be in a clockwise direction.
Regards

topic Reverse Orientation Not Working in ArcObjects SDK Questions

Reverse Orientation Not Working

Re: Reverse Orientation Not Working