svn-gvsig-desktop / tags / v1_1_Build_1012 / libraries / libFMap / src / com / iver / cit / gvsig / fmap / drivers / shp / write / SHPMultiLine.java @ 12987
History | View | Annotate | Download (8.54 KB)
1 |
/* gvSIG. Sistema de Informaci?n Geogr?fica de la Generalitat Valenciana
|
---|---|
2 |
*
|
3 |
* Copyright (C) 2004 IVER T.I. and Generalitat Valenciana.
|
4 |
*
|
5 |
* This program is free software; you can redistribute it and/or
|
6 |
* modify it under the terms of the GNU General Public License
|
7 |
* as published by the Free Software Foundation; either version 2
|
8 |
* of the License, or (at your option) any later version.
|
9 |
*
|
10 |
* This program is distributed in the hope that it will be useful,
|
11 |
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
12 |
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
13 |
* GNU General Public License for more details.
|
14 |
*
|
15 |
* You should have received a copy of the GNU General Public License
|
16 |
* along with this program; if not, write to the Free Software
|
17 |
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,USA.
|
18 |
*
|
19 |
* For more information, contact:
|
20 |
*
|
21 |
* Generalitat Valenciana
|
22 |
* Conselleria d'Infraestructures i Transport
|
23 |
* Av. Blasco Ib??ez, 50
|
24 |
* 46010 VALENCIA
|
25 |
* SPAIN
|
26 |
*
|
27 |
* +34 963862235
|
28 |
* gvsig@gva.es
|
29 |
* www.gvsig.gva.es
|
30 |
*
|
31 |
* or
|
32 |
*
|
33 |
* IVER T.I. S.A
|
34 |
* Salamanca 50
|
35 |
* 46005 Valencia
|
36 |
* Spain
|
37 |
*
|
38 |
* +34 963163400
|
39 |
* dac@iver.es
|
40 |
*/
|
41 |
package com.iver.cit.gvsig.fmap.drivers.shp.write; |
42 |
|
43 |
import java.awt.geom.PathIterator; |
44 |
import java.awt.geom.Rectangle2D; |
45 |
import java.nio.ByteBuffer; |
46 |
import java.nio.MappedByteBuffer; |
47 |
import java.util.ArrayList; |
48 |
|
49 |
import com.iver.cit.gvsig.fmap.core.FPoint2D; |
50 |
import com.iver.cit.gvsig.fmap.core.FPolyline2D; |
51 |
import com.iver.cit.gvsig.fmap.core.GeneralPathX; |
52 |
import com.iver.cit.gvsig.fmap.core.IGeometry; |
53 |
import com.iver.cit.gvsig.fmap.core.IGeometry3D; |
54 |
import com.iver.cit.gvsig.fmap.core.v02.FConstant; |
55 |
import com.iver.cit.gvsig.fmap.core.v02.FConverter; |
56 |
import com.iver.cit.gvsig.fmap.drivers.shp.SHP; |
57 |
|
58 |
|
59 |
/**
|
60 |
* Elemento shape de tipo multil?nea.
|
61 |
*
|
62 |
* @author Vicente Caballero Navarro
|
63 |
*/
|
64 |
public class SHPMultiLine implements SHPShape { |
65 |
protected int m_type; |
66 |
protected int[] parts; |
67 |
protected FPoint2D[] points; |
68 |
protected double[] zs; |
69 |
//double flatness = 0.8; // Por ejemplo. Cuanto m?s peque?o, m?s segmentos necesitar? la curva
|
70 |
|
71 |
/**
|
72 |
* Crea un nuevo SHPMultiLine.
|
73 |
*/
|
74 |
public SHPMultiLine() {
|
75 |
m_type = FConstant.SHAPE_TYPE_POLYLINE; |
76 |
} |
77 |
|
78 |
/**
|
79 |
* Crea un nuevo SHPMultiLine.
|
80 |
*
|
81 |
* @param type Tipo de multil?nea.
|
82 |
*
|
83 |
* @throws ShapefileException
|
84 |
*/
|
85 |
public SHPMultiLine(int type) throws ShapefileException { |
86 |
if ((type != FConstant.SHAPE_TYPE_POLYLINE) &&
|
87 |
(type != FConstant.SHAPE_TYPE_POLYLINEM) && |
88 |
(type != FConstant.SHAPE_TYPE_POLYLINEZ)) { |
89 |
throw new ShapefileException("No es de tipo 3,13 ni 23"); |
90 |
} |
91 |
|
92 |
m_type = type; |
93 |
} |
94 |
|
95 |
/**
|
96 |
* @see com.iver.cit.gvsig.fmap.shp.SHPShape#getShapeType()
|
97 |
*/
|
98 |
public int getShapeType() { |
99 |
return m_type;
|
100 |
} |
101 |
|
102 |
/**
|
103 |
* @see com.iver.cit.gvsig.fmap.shp.SHPShape#read(MappedByteBuffer, int)
|
104 |
*/
|
105 |
public IGeometry read(MappedByteBuffer buffer, int type) { |
106 |
double minX = buffer.getDouble();
|
107 |
double minY = buffer.getDouble();
|
108 |
double maxX = buffer.getDouble();
|
109 |
double maxY = buffer.getDouble();
|
110 |
Rectangle2D rec = new Rectangle2D.Double(minX, minY, maxX - minX, |
111 |
maxY - maxY); |
112 |
|
113 |
int numParts = buffer.getInt();
|
114 |
int numPoints = buffer.getInt(); //total number of points |
115 |
|
116 |
int[] partOffsets = new int[numParts]; |
117 |
|
118 |
for (int i = 0; i < numParts; i++) { |
119 |
partOffsets[i] = buffer.getInt(); |
120 |
} |
121 |
|
122 |
FPoint2D[] points = new FPoint2D[numPoints]; |
123 |
|
124 |
for (int t = 0; t < numPoints; t++) { |
125 |
points[t] = new FPoint2D(buffer.getDouble(), buffer.getDouble());
|
126 |
} |
127 |
|
128 |
/* if (type == FConstant.SHAPE_TYPE_POLYLINEZ) {
|
129 |
//z min, max
|
130 |
buffer.position(buffer.position() + (2 * 8));
|
131 |
for (int t = 0; t < numPoints; t++) {
|
132 |
points[t].z = buffer.getDouble(); //z value
|
133 |
}
|
134 |
}
|
135 |
*/
|
136 |
return (IGeometry) new FPolyline2D(getGeneralPathX(points, partOffsets)); |
137 |
} |
138 |
|
139 |
/**
|
140 |
* @see com.iver.cit.gvsig.fmap.shp.SHPShape#write(ByteBuffer, IGeometry)
|
141 |
*/
|
142 |
public void write(ByteBuffer buffer, IGeometry geometry) { |
143 |
Rectangle2D rec = geometry.getBounds2D();
|
144 |
buffer.putDouble(rec.getMinX()); |
145 |
buffer.putDouble(rec.getMinY()); |
146 |
buffer.putDouble(rec.getMaxX()); |
147 |
buffer.putDouble(rec.getMaxY()); |
148 |
int numParts = parts.length;
|
149 |
int npoints = points.length;
|
150 |
buffer.putInt(numParts); |
151 |
buffer.putInt(npoints); |
152 |
|
153 |
for (int i = 0; i < numParts; i++) { |
154 |
buffer.putInt(parts[i]); |
155 |
} |
156 |
|
157 |
for (int t = 0; t < npoints; t++) { |
158 |
buffer.putDouble(points[t].getX()); |
159 |
buffer.putDouble(points[t].getY()); |
160 |
} |
161 |
|
162 |
if (m_type == FConstant.SHAPE_TYPE_POLYLINEZ) {
|
163 |
double[] zExtreame = SHP.getZMinMax(zs); |
164 |
if (Double.isNaN(zExtreame[0])) { |
165 |
buffer.putDouble(0.0);
|
166 |
buffer.putDouble(0.0);
|
167 |
} else {
|
168 |
buffer.putDouble(zExtreame[0]);
|
169 |
buffer.putDouble(zExtreame[1]);
|
170 |
} |
171 |
for (int t = 0; t < npoints; t++) { |
172 |
double z = zs[t];
|
173 |
if (Double.isNaN(z)) { |
174 |
buffer.putDouble(0.0);
|
175 |
} else {
|
176 |
buffer.putDouble(z); |
177 |
} |
178 |
} |
179 |
|
180 |
} |
181 |
if (m_type == FConstant.SHAPE_TYPE_POLYLINEM) {
|
182 |
buffer.putDouble(-10E40);
|
183 |
buffer.putDouble(-10E40);
|
184 |
for (int t = 0; t < npoints; t++) { |
185 |
buffer.putDouble(-10E40);
|
186 |
} |
187 |
} |
188 |
|
189 |
} |
190 |
|
191 |
/**
|
192 |
* @see com.iver.cit.gvsig.fmap.shp.SHPShape#getLength(int)
|
193 |
*/
|
194 |
public int getLength(IGeometry fgeometry) { |
195 |
int numlines;
|
196 |
int numpoints;
|
197 |
int length;
|
198 |
|
199 |
numlines = parts.length; |
200 |
numpoints = points.length; |
201 |
if (m_type == FConstant.SHAPE_TYPE_POLYLINE) {
|
202 |
length = 44 + (4 * numlines) + (numpoints * 16); |
203 |
} else if (m_type == FConstant.SHAPE_TYPE_POLYLINEM) { |
204 |
length = 44 + (4 * numlines) + (numpoints * 16) + 8 + 8 + |
205 |
(8 * numpoints);
|
206 |
} else if (m_type == FConstant.SHAPE_TYPE_POLYLINEZ) { |
207 |
length = 44 + (4 * numlines) + (numpoints * 16) + |
208 |
(8 * numpoints) + 8 + 8; |
209 |
} else {
|
210 |
throw new IllegalStateException("Expected ShapeType of Arc, got " + |
211 |
m_type); |
212 |
} |
213 |
|
214 |
return length;
|
215 |
} |
216 |
|
217 |
/**
|
218 |
* DOCUMENT ME!
|
219 |
*
|
220 |
* @param po DOCUMENT ME!
|
221 |
* @param pa DOCUMENT ME!
|
222 |
*
|
223 |
* @return DOCUMENT ME!
|
224 |
*/
|
225 |
protected GeneralPathX getGeneralPathX(FPoint2D[] po, int[] pa) { |
226 |
GeneralPathX gPX = new GeneralPathX(GeneralPathX.WIND_EVEN_ODD,
|
227 |
po.length); |
228 |
int j = 0; |
229 |
|
230 |
for (int i = 0; i < po.length; i++) { |
231 |
if (i == pa[j]) {
|
232 |
gPX.moveTo(po[i].getX(), po[i].getY()); |
233 |
|
234 |
if (j < (pa.length - 1)) { |
235 |
j++; |
236 |
} |
237 |
} else {
|
238 |
gPX.lineTo(po[i].getX(), po[i].getY()); |
239 |
} |
240 |
} |
241 |
|
242 |
return gPX;
|
243 |
} |
244 |
|
245 |
/**
|
246 |
* @see com.iver.cit.gvsig.fmap.shp.SHPShape#obtainsPoints(com.iver.cit.gvsig.fmap.core.GeneralPathXIterator)
|
247 |
*/
|
248 |
public void obtainsPoints(IGeometry g) { |
249 |
if (FConstant.SHAPE_TYPE_POLYLINEZ == m_type || FConstant.SHAPE_TYPE_POLYGONZ == m_type){
|
250 |
zs=((IGeometry3D)g).getZs(); |
251 |
} |
252 |
ArrayList arrayPoints = null; |
253 |
ArrayList arrayParts = new ArrayList(); |
254 |
PathIterator theIterator = g.getPathIterator(null, FConverter.FLATNESS); //polyLine.getPathIterator(null, flatness); |
255 |
double[] theData = new double[6]; |
256 |
int numParts = 0; |
257 |
while (!theIterator.isDone()) {
|
258 |
//while not done
|
259 |
int theType = theIterator.currentSegment(theData);
|
260 |
|
261 |
//Populate a segment of the new
|
262 |
// GeneralPathX object.
|
263 |
//Process the current segment to populate a new
|
264 |
// segment of the new GeneralPathX object.
|
265 |
|
266 |
switch (theType) {
|
267 |
case PathIterator.SEG_MOVETO: |
268 |
|
269 |
// System.out.println("SEG_MOVETO");
|
270 |
if (arrayPoints == null) { |
271 |
arrayPoints = new ArrayList(); |
272 |
arrayParts.add(new Integer(0)); |
273 |
} else {
|
274 |
arrayParts.add(new Integer(arrayPoints.size())); |
275 |
} |
276 |
|
277 |
numParts++; |
278 |
|
279 |
arrayPoints.add(new FPoint2D(theData[0], theData[1])); |
280 |
|
281 |
break;
|
282 |
|
283 |
case PathIterator.SEG_LINETO: |
284 |
|
285 |
// System.out.println("SEG_LINETO");
|
286 |
arrayPoints.add(new FPoint2D(theData[0], theData[1])); |
287 |
|
288 |
break;
|
289 |
|
290 |
case PathIterator.SEG_QUADTO: |
291 |
System.out.println("Not supported here"); |
292 |
|
293 |
break;
|
294 |
|
295 |
case PathIterator.SEG_CUBICTO: |
296 |
System.out.println("Not supported here"); |
297 |
|
298 |
break;
|
299 |
|
300 |
case PathIterator.SEG_CLOSE: |
301 |
System.out.println("SEG_CLOSE"); |
302 |
|
303 |
// A?adimos el primer punto para cerrar.
|
304 |
FPoint2D firstPoint = (FPoint2D) arrayPoints.get(0);
|
305 |
arrayPoints.add(new FPoint2D(firstPoint.getX(),
|
306 |
firstPoint.getY())); |
307 |
|
308 |
break;
|
309 |
} //end switch
|
310 |
|
311 |
theIterator.next(); |
312 |
} |
313 |
|
314 |
Integer[] integers = (Integer[]) arrayParts.toArray(new Integer[0]); |
315 |
parts = new int[integers.length]; |
316 |
for (int i = 0; i < integers.length; i++) { |
317 |
parts[i] = integers[i].intValue(); |
318 |
} |
319 |
if (arrayPoints==null){ |
320 |
points=new FPoint2D[0]; |
321 |
return;
|
322 |
} |
323 |
points = (FPoint2D[]) arrayPoints.toArray(new FPoint2D[0]); |
324 |
|
325 |
} |
326 |
|
327 |
// public void setFlatness(double flatness) {
|
328 |
// this.flatness=flatness;
|
329 |
// }
|
330 |
} |