001 //$HeadURL: https://svn.wald.intevation.org/svn/deegree/base/branches/2.3_testing/src/org/deegree/model/spatialschema/CurveBoundaryImpl.java $
002 /*----------------------------------------------------------------------------
003 This file is part of deegree, http://deegree.org/
004 Copyright (C) 2001-2009 by:
005 Department of Geography, University of Bonn
006 and
007 lat/lon GmbH
008
009 This library is free software; you can redistribute it and/or modify it under
010 the terms of the GNU Lesser General Public License as published by the Free
011 Software Foundation; either version 2.1 of the License, or (at your option)
012 any later version.
013 This library is distributed in the hope that it will be useful, but WITHOUT
014 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
015 FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
016 details.
017 You should have received a copy of the GNU Lesser General Public License
018 along with this library; if not, write to the Free Software Foundation, Inc.,
019 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
020
021 Contact information:
022
023 lat/lon GmbH
024 Aennchenstr. 19, 53177 Bonn
025 Germany
026 http://lat-lon.de/
027
028 Department of Geography, University of Bonn
029 Prof. Dr. Klaus Greve
030 Postfach 1147, 53001 Bonn
031 Germany
032 http://www.geographie.uni-bonn.de/deegree/
033
034 e-mail: info@deegree.org
035 ----------------------------------------------------------------------------*/
036 package org.deegree.model.spatialschema;
037
038 import java.io.Serializable;
039
040 import org.deegree.framework.log.ILogger;
041 import org.deegree.framework.log.LoggerFactory;
042 import org.deegree.model.crs.CoordinateSystem;
043
044 /**
045 * default implementation of the CurveBoundary interface from package deegree.model.spatialschema.
046 *
047 * <p>
048 * ------------------------------------------------------------
049 * </p>
050 *
051 * @version 10.6.2001
052 * @author Andreas Poth
053 */
054
055 public class CurveBoundaryImpl extends PrimitiveBoundaryImpl implements CurveBoundary, Serializable {
056
057 private ILogger LOG = LoggerFactory.getLogger( CurveBoundaryImpl.class );
058
059 /** Use serialVersionUID for interoperability. */
060 private final static long serialVersionUID = 4226497939552424434L;
061
062 private Position ep = null;
063
064 private Position sp = null;
065
066 /**
067 * constructor of curve_boundary with CS_CoordinateSystem and startpoint and endpoint
068 *
069 * @param crs
070 * @param sp
071 * @param ep
072 */
073 protected CurveBoundaryImpl( CoordinateSystem crs, Position sp, Position ep ) {
074 super( crs );
075
076 this.sp = sp;
077 this.ep = ep;
078
079 setValid( false );
080 }
081
082 /**
083 * The operation "dimension" shall return the inherent dimension of this Geometry, which shall be less than or equal
084 * to the coordinate dimension. The dimension of a collection of geometric objects shall be the largest dimension of
085 * any of its pieces. Points are 0-dimensional, curves are 1-dimensional, surfaces are 2-dimensional, and solids are
086 * 3-dimensional.
087 */
088 public int getDimension() {
089 return 1;
090 }
091
092 /**
093 * The operation "coordinateDimension" shall return the dimension of the coordinates that define this Geometry,
094 * which must be the same as the coordinate dimension of the coordinate reference system for this Geometry.
095 */
096 public int getCoordinateDimension() {
097 return getStartPoint().getCoordinateDimension();
098 }
099
100 /**
101 * @return a shallow copy of the geometry
102 */
103 @Override
104 public Object clone() {
105 CurveBoundary cb = null;
106
107 try {
108 cb = new CurveBoundaryImpl( getCoordinateSystem(), sp, ep );
109 } catch ( Exception ex ) {
110 LOG.logError( ex.getMessage(), ex );
111 }
112
113 return cb;
114 }
115
116 /**
117 * returns the StartPoint of the boundary
118 */
119 public Position getStartPoint() {
120 return sp;
121 }
122
123 /**
124 * returns the EndPoint of the boundary
125 */
126 public Position getEndPoint() {
127 return ep;
128 }
129
130 /**
131 * checks if this curve is completely equal to the submitted geometry
132 *
133 * @param other
134 * object to compare to
135 */
136 @Override
137 public boolean equals( Object other ) {
138 if ( !super.equals( other ) || !( other instanceof CurveBoundaryImpl ) ) {
139 return false;
140 }
141
142 if ( !ep.equals( ( (CurveBoundary) other ).getEndPoint() )
143 || !sp.equals( ( (CurveBoundary) other ).getStartPoint() ) ) {
144 return false;
145 }
146
147 return true;
148 }
149
150 /**
151 * The Boolean valued operation "intersects" shall return TRUE if this Geometry intersects another Geometry. Within
152 * a Complex, the Primitives do not intersect one another. In general, topologically structured data uses shared
153 * geometric objects to capture intersection information.
154 */
155 @Override
156 public boolean intersects( Geometry gmo ) {
157 boolean inter = false;
158 Point p1 = new PointImpl( sp, crs );
159 Point p2 = new PointImpl( ep, crs );
160
161 try {
162 if ( gmo instanceof Point ) {
163 inter = LinearIntersects.intersects( p1, (Point) gmo );
164
165 if ( !inter ) {
166 inter = LinearIntersects.intersects( p2, (Point) gmo );
167 }
168 } else if ( gmo instanceof Curve ) {
169 inter = LinearIntersects.intersects( p1, (Curve) gmo );
170
171 if ( !inter ) {
172 inter = LinearIntersects.intersects( p2, (Curve) gmo );
173 }
174 } else if ( gmo instanceof Surface ) {
175 inter = LinearIntersects.intersects( p1, (Surface) gmo );
176
177 if ( !inter ) {
178 inter = LinearIntersects.intersects( p2, (Surface) gmo );
179 }
180 } else if ( gmo instanceof MultiPrimitive ) {
181 inter = intersectsMultiPrimitive( (MultiPrimitive) gmo );
182 }
183 } catch ( Exception e ) {
184 // do nothing
185 }
186
187 return inter;
188 }
189
190 /**
191 * the operations returns true if the submitted multi primitive intersects with the curve segment
192 */
193 private boolean intersectsMultiPrimitive( MultiPrimitive mprim )
194 throws Exception {
195 boolean inter = false;
196
197 int cnt = mprim.getSize();
198
199 for ( int i = 0; i < cnt; i++ ) {
200 if ( intersects( mprim.getPrimitiveAt( i ) ) ) {
201 inter = true;
202 break;
203 }
204 }
205
206 return inter;
207 }
208
209 /**
210 * calculates the envelope of the curve boundary
211 */
212 private void calculateEnvelope() {
213 double[] min = sp.getAsArray().clone();
214 double[] max = ep.getAsArray().clone();
215
216 for ( int i = 0; i < min.length; i++ ) {
217 if ( min[i] > max[i] ) {
218 double d = min[i];
219 min[i] = max[i];
220 max[i] = d;
221 }
222 }
223
224 envelope = new EnvelopeImpl( new PositionImpl( min ), new PositionImpl( max ), this.crs );
225 }
226
227 /**
228 * calculates the envelope of the curve boundary
229 */
230 @Override
231 protected void calculateParam() {
232 calculateEnvelope();
233 setValid( true );
234 }
235
236 @Override
237 public String toString() {
238 return "point1: [" + sp + "] - point2: [" + ep + "]";
239 }
240 }