Distance calculation support for arc features (circstring, compoundcurve, curvepolygon)

[pramsey]

Add support for 2D distance calculations against the ISO SQL/MM curved features:

• CircularString
• CompoundCurve
• CurvePolygon
• MultiCurve
• MultiSurface

[pramsey]

Support for arc/pt, arc/seg, arc/arc distance calculation added at r10335

[pramsey]

Added a length calculation at r10337

[pramsey]

Added point-in-polygon test for arc-based geometries at r10384

[pramsey]

Committed to trunk at r11219

[pramsey]

Remove old unused brute force distance manager at r11227

[robe]

and of course he did not document the change in user facing documentation. Don't worry I will.

[robe]

flagged on ST_Distance at r11228, still need to put in some examples. I'll close after I do that.

[robe]

pramsey — I know how much you hate postgresql regress tests, but any chance you can add some in measures.sql or a separate file. These things always seem to behave differently when put under the postgresql microscope than when in cunit.

[robe]

I did notice you have a postgresql test buried in the tickets. I GUESS that will do so never mind unless you have time.

[robe]

Does this change ST_DWithin support as well or can you make it do so if it doesn't in 2.1?

[pramsey]

It should affect DWithin, because DWithin calls into the same code path.

[robe]

okay flagged ST_Dwithin as well as now supporting curves in r11230.

haven't put any examples in but may not be getting to that anytime soon.