Hi,
I've just made the first pull request for arc support:
https://github.com/geotools/geotools/pull/498/files
This one adds:
* CircularArc, the class that manages the linearization and bbox computation
of a arc of circle by 3 points
* A bunch of actual geometry classes representing linestring and rings, made
of just circular elements (CircularString, CircularRing) and made of a mix
of circular and straight elements (CompundCurve, CompoundRing)
* WKTReader2 changed to parse into in memory curve geometry representation
* Integration with geometry converter so that
Converters.convert("CIRCULARSTRING...", Geometry.class)
works with all the curved geometries as well
* Rendering optimization, so that curves linearize using a tolerance that's
compatible with the size of the pixel on screen (so, at just the right
amount
of detail).
Here is a couple of property files and how they are rendering in the
streaming
rendering tests:
_=geom:LineString:4326,name:String
cp.1=COMPOUNDCURVE(CIRCULARSTRING(0 0, 2 0, 2 1, 2 3, 4 3),(4 3, 4 5, 1 4,
0 0))|Compound
cp.2=CIRCULARSTRING(-10 0, -8 2, -6 0, -8 -2, -10 0)|Circle
cp.3=CIRCULARSTRING(-7 -8, -5 -6, -3 -8, -1 -10, 1 -8))|Wave
_=geom:Polygon:4326,name:String
cp.1=CURVEPOLYGON(COMPOUNDCURVE(CIRCULARSTRING(0 0, 2 0, 2 1, 2 3, 4 3),(4
3, 4 5, 1 4, 0 0)), CIRCULARSTRING(1.7 1, 1.4 0.4, 1.6 0.4, 1.6 0.5, 1.7 1)
)|Complex
cp.2=CURVEPOLYGON(CIRCULARSTRING(-10 0, -8 2, -6 0, -8 -2, -10 0))|Circle
cp.3=CURVEPOLYGON(CIRCULARSTRING(-7 -8, -5 -6, -3 -8, -5 -10, -7
-8),CIRCULARSTRING(-6 -8, -5 -7, -4 -8, -5 -9, -6 -8))|Donut
Feedback welcomed. In the meantime I'm going to move on with GML encoding
and Oracle reading.
Cheers
Andrea
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