Examples of com.vividsolutions.jts.algorithm.MinimumBoundingCircle

com.vividsolutions.jts.algorithm.MinimumBoundingCircle

Computes the Minimum Bounding Circle (MBC) for the points in a {@link Geometry}. The MBC is the smallest circle which contains all the input points (this is sometimes known as the Smallest Enclosing Circle). This is equivalent to computing the Maximum Diameter of the input point set.

The geometric circle can be specified in two equivalent ways, both of which are provide as output by this class:

As a centre point and a radius
By the set of points defining the circle. Depending on the number of points in the input and their relative positions, this will be specified by anywhere from 0 to 3 points. 0 or 1 points indicate an empty or trivial input point arrangment. 2 or 3 points define a circle which contains all the input points.

The class also provides a Geometry which approximates the shape of the MBC (although as an approximation it is not guaranteed to cover all the input points.) @author Martin Davis

        Function exp = ff.function("mincircle", ff.property("geom"));
        SimpleFeatureIterator iter = featureCollection.features();
        while (iter.hasNext()) {
            SimpleFeature feature = iter.next();
            Geometry geom = (Geometry) feature.getDefaultGeometry();
            Geometry circle = new MinimumBoundingCircle(geom).getCircle();
            Object value = exp.evaluate(feature);
            assertTrue(value instanceof Polygon);
            assertTrue(circle.equals((Geometry) value));
        }
        iter.close();

           return _this.getInteriorRingN(arg1);
     }
     
     static public Geometry minimumCircle(Geometry g) {
         if (g == null) return null;
         MinimumBoundingCircle circle = new MinimumBoundingCircle(g);
         return circle.getCircle();
     }

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