[postgis-devel] Issue 58 in postgis: bounding box of circular string is incorrect

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Issue 58: bounding box of circular string is incorrect
http://code.google.com/p/postgis/issues/detail?id=58

New issue report by mrk.leslie:
Execute:

select ST_Box2d('CIRCULARSTRING(220268.439465645
150415.359530563,220227.333322076 150505.561285879,220227.353105332
150406.434743975)'::geometry);

Result:

BOX(220227.34375 150406.421875,220268.453125 150415.375)

Expected:

BOX(220187.375 150406.421875,220288.828125 150506.71875)

Reported at:
http://www.nabble.com/bounding-box-incorrect-on-circularstring-td19751567.html

This seems to be a problem in determining the angle of sweep of the arc.
Because it's nearly a full circle, it takes the shorter path between the
end points, ignoring the midpoint.


Issue attributes:
	Status: New
	Owner: ----
	Labels: Type-Defect Priority-Medium

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