FishEye: file HibernateSpatial/trunk/hibernate-spatial-sqlserver/src/main/java/org/hibernatespatial/sqlserver/convertors/PolygonEncoder.java

Annotated File View

maesenka	149	1	/*
maesenka	201	2	* $Id: PolygonEncoder.java 201 2010-04-05 13:49:25Z maesenka $
maesenka	149	3	*
		4	* This file is part of Hibernate Spatial, an extension to the
		5	* hibernate ORM solution for geographic data.
		6	*
maesenka	163	7	* Copyright © 2007-2010 Geovise BVBA
maesenka	149	8	*
		9	* This library is free software; you can redistribute it and/or
		10	* modify it under the terms of the GNU Lesser General Public
		11	* License as published by the Free Software Foundation; either
		12	* version 2.1 of the License, or (at your option) any later version.
		13	*
		14	* This library is distributed in the hope that it will be useful,
		15	* but WITHOUT ANY WARRANTY; without even the implied warranty of
		16	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
		17	* Lesser General Public License for more details.
		18	*
		19	* You should have received a copy of the GNU Lesser General Public
		20	* License along with this library; if not, write to the Free Software
		21	* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
		22	*
		23	* For more information, visit: http://www.hibernatespatial.org/
		24	*/
		25
		26	package org.hibernatespatial.sqlserver.convertors;
		27
maesenka	156	28	import com.vividsolutions.jts.geom.Coordinate;
maesenka	149	29	import com.vividsolutions.jts.geom.Geometry;
		30	import com.vividsolutions.jts.geom.LineString;
		31	import com.vividsolutions.jts.geom.Polygon;
		32
maesenka	156	33	import java.util.List;
maesenka	156	34
maesenka	201	35	/**
		36	* <code>Encoder</code> for Polygons.
		37	*
		38	* @uthor Karel Maesen, Geovise BVBA
		39	*/
		40	class PolygonEncoder extends AbstractEncoder<Polygon> {
maesenka	149	41
		42	public boolean accepts(Geometry geom) {
		43	return geom instanceof Polygon;
		44	}
		45
maesenka	156	46	@Override
maesenka	156	47	protected void encode(Geometry geom, int parentShapeIndex, List<Coordinate> coordinates, List<Figure> figures, List<Shape> shapes) {
maesenka	162	48	if (!(geom instanceof Polygon)) throw new IllegalArgumentException("Polygon geometry expected.");
		49	if (geom.isEmpty()) {
		50	shapes.add(new Shape(parentShapeIndex, -1, OpenGisType.POLYGON));
		51	return;
		52	}
		53	Polygon polygon = (Polygon) geom;
maesenka	156	54	int figureOffset = figures.size();
maesenka	162	55	shapes.add(new Shape(parentShapeIndex, figureOffset, OpenGisType.POLYGON));
maesenka	156	56
		57	int pointOffset = coordinates.size();
		58	addExteriorRing(polygon, coordinates, figures);
		59	addInteriorRings(polygon, coordinates, figures);
		60
maesenka	150	61	}
maesenka	150	62
maesenka	156	63
maesenka	162	64	private void addInteriorRings(Polygon geom, List<Coordinate> coordinates, List<Figure> figures) {
maesenka	162	65	for (int idx = 0; idx < geom.getNumInteriorRing(); idx++) {
maesenka	156	66	addInteriorRing(geom.getInteriorRingN(idx), coordinates, figures);
maesenka	149	67	}
		68	}
		69
maesenka	156	70	private void addInteriorRing(LineString ring, List<Coordinate> coordinates, List<Figure> figures) {
		71	int pointOffset = coordinates.size();
		72	addPoints(ring, coordinates);
maesenka	150	73	Figure figure = new Figure(FigureAttribute.InteriorRing, pointOffset);
maesenka	156	74	figures.add(figure);
maesenka	156	75
maesenka	149	76	}
maesenka	149	77
maesenka	156	78	private void addPoints(LineString ring, List<Coordinate> coordinates) {
maesenka	162	79	for (Coordinate c : ring.getCoordinates()) {
maesenka	156	80	coordinates.add(c);
		81	}
		82	}
		83
		84	private void addExteriorRing(Polygon geom, List<Coordinate> coordinates, List<Figure> figures) {
maesenka	149	85	LineString shell = geom.getExteriorRing();
maesenka	156	86	int offset = coordinates.size();
maesenka	156	87	addPoints(shell, coordinates);
maesenka	149	88	Figure exterior = new Figure(FigureAttribute.ExteriorRing, offset);
maesenka	156	89	figures.add(exterior);
maesenka	149	90	}
maesenka	149	91
maesenka	156	92
maesenka	149	93	}

FishEye

View

Diff

Annotations

Annotated File View