Add get maximum inscribed circle method to Geometry (#79)

Author: jericks

doc/api/geom/geometry.rst

@@ -266,6 +266,13 @@ Common Geometry Methods
     :attr:`projection` of this geometry must be set before calling this
     method.  Returns a new geometry.
 
+.. function:: Geometry.getMaximumInscribedCircle
+
+    :arg config: :`Object` tolerance property defaults to 1.0
+    :returns: :class:`geom.Geometry`
+
+    Get the maximum inscribed circle for this Geometry.
+
 .. function:: Geometry.within
 
     :arg other: :class:`geom.Geometry`

src/main/java/org/geoscript/js/geom/Geometry.java

@@ -6,6 +6,7 @@
 import java.util.List;
 import java.util.Objects;
 
+import org.locationtech.jts.algorithm.construct.MaximumInscribedCircle;
 import org.locationtech.jts.densify.Densifier;
 import org.geoscript.js.GeoObject;
 import org.geoscript.js.proj.Projection;
@@ -341,6 +342,16 @@ public ScriptableObject randomPoints(int number) {
         return points;
     }
 
+    @JSFunction
+    public Geometry getMaximumInscribedCircle(NativeObject config) {
+        double tolerance = getDouble(config.getOrDefault("tolerance", 1.0));
+        MaximumInscribedCircle algorithm = new MaximumInscribedCircle(getGeometry(), tolerance);
+        return (Geometry) GeometryWrapper.wrap(
+                getParentScope(),
+                algorithm.getCenter().buffer(algorithm.getRadiusLine().getLength())
+        );
+    }
+
     @JSFunction
     public ScriptableObject createDelaunayTriangles(boolean isConforming) {
         org.locationtech.jts.geom.Geometry geom;

src/test/resources/org/geoscript/js/tests/geoscript/test_geom.js

@@ -186,6 +186,20 @@ exports["test: create conforming delaunay triangles"] = function() {
 
 }
 
+exports["test: maximum inscribed circle"] = function() {
+
+    var geom = new GEOM.Polygon([[
+        [-122.38855361938475, 47.5805786829606], [-122.38636493682861, 47.5783206388176],
+        [-122.38700866699219, 47.5750491969984], [-122.38177299499512, 47.57502024527343],
+        [-122.38481998443604, 47.5780600889959], [-122.38151550292969, 47.5805786829606],
+        [-122.38855361938475, 47.5805786829606]
+    ]]);
+    ASSERT.ok(geom instanceof GEOM.Polygon);
+    var circle = geom.getMaximumInscribedCircle({tolerance: 1.0});
+    ASSERT.ok(circle instanceof GEOM.Polygon);
+
+}
+
 exports["test: create non-conforming delaunay triangles"] = function() {
 
     var geom = GEOM.Point([1,1]).buffer(50)