[postgis-devel] [PostGIS] #413: ST_OffsetCurve

PostGIS trac at osgeo.org
Wed Apr 27 06:13:27 PDT 2011

#413: ST_OffsetCurve
 Reporter:  rafalmag     |       Owner:  strk         
     Type:  enhancement  |      Status:  assigned     
 Priority:  medium       |   Milestone:  PostGIS 2.0.0
Component:  postgis      |     Version:  trunk        
 Keywords:               |  

Comment(by strk):

 FYI: upcoming GEOS-3.3.0 will have offset curve generation refactored.
 Part of this is due to JTS introducing proper single sided buffers
 The C-API function for offset curves will be named GEOSOffsetCurve
 deprecating GEOSBufferSingleSided (to avoid confusion with areal single
 sided buffers).

 An interesting interface found in JTS (for the right/left discourse) was
 to use the sign of buffer distance (negative distance == right side). Such
 interface might be found in the new GEOSOffsetCurve too.

Ticket URL: <http://trac.osgeo.org/postgis/ticket/413#comment:26>
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