/**
* H2GIS is a library that brings spatial support to the H2 Database Engine
* <http://www.h2database.com>. H2GIS is developed by CNRS
* <http://www.cnrs.fr/>.
*
* This code is part of the H2GIS project. H2GIS is free software;
* you can redistribute it and/or modify it under the terms of the GNU
* Lesser General Public License as published by the Free Software Foundation;
* version 3.0 of the License.
*
* H2GIS is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License
* for more details <http://www.gnu.org/licenses/>.
*
*
* For more information, please consult: <http://www.h2gis.org/>
* or contact directly: info_at_h2gis.org
*/
package org.h2gis.functions.spatial.create;
import com.vividsolutions.jts.algorithm.MinimumBoundingCircle;
import com.vividsolutions.jts.geom.Geometry;
import com.vividsolutions.jts.geom.Point;
import org.h2gis.api.DeterministicScalarFunction;
/**
* Compute the minimum bounding circle center of a geometry
* @author Nicolas Fortin
*/
public class ST_BoundingCircleCenter extends DeterministicScalarFunction {
/**
* Constructor
*/
public ST_BoundingCircleCenter() {
addProperty(PROP_REMARKS, "Compute the minimum bounding circle center of a geometry." +
"This function is more precise than the conjunction of ST_CENTROID and ST_BoundingCircle");
}
@Override
public String getJavaStaticMethod() {
return "getCircumCenter";
}
/**
* Compute the minimum bounding circle center of a geometry
* @param geometry Any geometry
* @return Minimum bounding circle center point
*/
public static Point getCircumCenter(Geometry geometry) {
if(geometry == null || geometry.getNumPoints() == 0) {
return null;
}
return geometry.getFactory().createPoint(new MinimumBoundingCircle(geometry).getCentre());
}
}