Vishful thinking…

ESRI SL API Contrib – Point in polygon & buffer point for the WGS84 spatial reference system

Posted in Uncategorized by viswaug on May 27, 2009

I just added some utility methods to the ESRI Silverlight API Contrib project that do the following

  1. Determine if a point is inside a polygon. Find the code here
  2. Buffer a point in the WGS84 spatial reference system. Find the code here
  3. Midpoint of two points in the WGS84 spatial reference system. Find the code here
  4. Find the end point given an origin point with a distance and an angle. Find the code here

The above methods should help you avoid some HTTP requests back to the ArcGIS Server to perform these spatial operations. Thus reducing the load on your ArcGIS Server and also increasing the performance of your web application by sticking to Steve Souders’s performance rule number one even though this is a Silverlight client.