[OpenLayers-Dev] trace along feature

Gagan Bansal gaganbansal123 at gmail.com
Fri Aug 5 01:54:02 EDT 2011


In one of my project there is requirement of tracing of feature along
another feature while drawing a new feature. I have written control for this
(Trace). There are are some issues for that i need suggestion.
Here is the working example -
code for trace control -

- for the Trace control I am taking input as Snapping object, instead of
extending the Snapping class, what could be the best way.
- here I require some Linear Referencing functions so written those
functions. Are LRS functions available in OpenLayers 
- I have made slight modification in Snapping control - snap event returns
the snapped Feature also. Here is the diff (
- Is this control can be part of the OpenLayers?  In case yes, how can I
contribute it.


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