001 //$HeadURL: https://svn.wald.intevation.org/svn/deegree/base/branches/2.3_testing/src/org/deegree/io/shpapi/SHPPolyLine3D.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.io.shpapi;
037
038 import org.deegree.model.spatialschema.ByteUtils;
039 import org.deegree.model.spatialschema.Curve;
040 import org.deegree.model.spatialschema.LineString;
041
042 /**
043 *
044 *
045 *
046 * @version $Revision: 18195 $
047 * @author <a href="mailto:poth@lat-lon.de">Andreas Poth</a>
048 * @author last edited by: $Author: mschneider $
049 *
050 * @version 1.0. $Revision: 18195 $, $Date: 2009-06-18 17:55:39 +0200 (Do, 18. Jun 2009) $
051 *
052 * @since 2.0
053 */
054 public class SHPPolyLine3D extends SHPPolyLine {
055
056 /**
057 * @param recBuf
058 */
059 public SHPPolyLine3D( byte[] recBuf ) {
060
061 super( recBuf );
062
063 int pointsStart = 0;
064 int sumPoints = 0;
065
066 envelope = ShapeUtils.readBox( recBuf, 4 );
067
068 numParts = ByteUtils.readLEInt( recBuffer, 36 );
069 numPoints = ByteUtils.readLEInt( recBuffer, 40 );
070
071 pointsStart = ShapeConst.PARTS_START + ( numParts * 4 );
072
073 points = new SHPPoint[numParts][];
074
075 for ( int j = 0; j < numParts; j++ ) {
076
077 int firstPointNo = 0;
078 int nextFirstPointNo = 0;
079 int offset = 0;
080 int lnumPoints = 0;
081
082 // get number of first point of current part out of ESRI shape Record:
083 firstPointNo = ByteUtils.readLEInt( recBuffer, ShapeConst.PARTS_START + ( j * 4 ) );
084
085 // calculate offset of part in bytes, count from the beginning of recordbuffer
086 offset = pointsStart + ( firstPointNo * 16 );
087
088 // get number of first point of next part ...
089 if ( j < numParts - 1 ) {
090 // ... usually out of ESRI shape Record
091 nextFirstPointNo = ByteUtils.readLEInt( recBuffer, ShapeConst.PARTS_START + ( ( j + 1 ) * 4 ) );
092 }
093 // ... for the last part as total number of points
094 else if ( j == numParts - 1 ) {
095 nextFirstPointNo = numPoints;
096 }
097
098 // calculate number of points per part due to distance and
099 // calculate some checksum for the total number of points to be worked
100 lnumPoints = nextFirstPointNo - firstPointNo;
101 sumPoints += lnumPoints;
102
103 // allocate memory for the j-th part
104 points[j] = new SHPPoint[lnumPoints];
105
106 int zPos = pointsStart + 16 * numPoints + 16;
107
108 // create the points of the j-th part from the buffer
109 for ( int i = 0; i < lnumPoints; i++ ) {
110 double z = ByteUtils.readLEDouble( recBuffer, zPos );
111 zPos += 8;
112 SHPPoint dummyPoint = new SHPPoint( recBuf, offset + ( i * 16 ) );
113 points[j][i] = new SHPPoint3D( dummyPoint.x, dummyPoint.y, z );
114 }
115
116 }
117
118 }
119
120 /**
121 * @param curve
122 */
123 public SHPPolyLine3D( Curve[] curve ) {
124 super( curve );
125 double xmin = curve[0].getEnvelope().getMin().getX();
126 double xmax = curve[0].getEnvelope().getMax().getX();
127 double ymin = curve[0].getEnvelope().getMin().getY();
128 double ymax = curve[0].getEnvelope().getMax().getY();
129
130 numParts = curve.length;
131
132 numPoints = 0;
133
134 points = new SHPPoint[numParts][];
135
136 try {
137 // create SHPPoints from the GM_Points array
138 for ( int i = 0; i < numParts; i++ ) {
139
140 LineString ls = curve[i].getAsLineString();
141
142 numPoints += ls.getNumberOfPoints();
143
144 points[i] = new SHPPoint3D[ls.getNumberOfPoints()];
145
146 for ( int j = 0; j < ls.getNumberOfPoints(); j++ ) {
147 points[i][j] = new SHPPoint3D( ls.getPositionAt( j ) );
148 if ( points[i][j].x > xmax ) {
149 xmax = points[i][j].x;
150 } else if ( points[i][j].x < xmin ) {
151 xmin = points[i][j].x;
152 }
153 if ( points[i][j].y > ymax ) {
154 ymax = points[i][j].y;
155 } else if ( points[i][j].y < ymin ) {
156 ymin = points[i][j].y;
157 }
158 }
159
160 }
161 } catch ( Exception e ) {
162 System.out.println( "SHPPolyLine:: " + e );
163 }
164
165 envelope = new SHPEnvelope( xmin, xmax, ymax, ymin );
166 }
167
168 /**
169 * @param points
170 */
171 public SHPPolyLine3D( SHPPoint3D[][] points ) {
172 super( (Curve[]) null );
173 this.points = points;
174 this.numParts = points.length;
175
176 }
177
178 }