[postgis-devel] [PostGIS] #755: Bug in 3d-distance functions

[PostGIS]

#755: Bug in 3d-distance functions
---------------------+------------------------------------------------------
 Reporter:  nicklas  |       Owner:  pramsey      
     Type:  defect   |      Status:  new          
 Priority:  medium   |   Milestone:  PostGIS 2.0.0
Component:  postgis  |     Version:  trunk        
 Keywords:           |  
---------------------+------------------------------------------------------
 This gives right answer: POINT(0 5 3)

 {{{
 select st_asewkt(st_3dclosestpoint(
 'POLYGON((0 0 0,0 0 5,0 10 5,0 10 0, 0 0 0))'::geometry,
 'POINT(5 5 3)'::geometry))
 }}}

 But this gives wrong answer POINT(5 0 5) instead of POINT(5 0 3)
 {{{
 select st_asewkt(st_3dclosestpoint(
 'POLYGON((0 0 0,0 0 5,10 0 5,10 0 0, 0 0 0))'::geometry,
 'POINT(5 5 3)'::geometry))
 }}}

 It finds the closest distance when checking against the boudary instead of
 against the surface. And as shown above it is not consistent.

 I will take a look soon.

 /Nicklas

-- 
Ticket URL: <http://trac.osgeo.org/postgis/ticket/755>
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