gvsig-raster / org.gvsig.raster / trunk / org.gvsig.raster / org.gvsig.raster.lib / org.gvsig.raster.lib.impl / src / main / java / org / gvsig / raster / impl / datastruct / DefaultViewPortData.java @ 2840
History | View | Annotate | Download (9.05 KB)
1 |
/* gvSIG. Geographic Information System of the Valencian Government
|
---|---|
2 |
*
|
3 |
* Copyright (C) 2007-2008 Infrastructures and Transports Department
|
4 |
* of the Valencian Government (CIT)
|
5 |
*
|
6 |
* This program is free software; you can redistribute it and/or
|
7 |
* modify it under the terms of the GNU General Public License
|
8 |
* as published by the Free Software Foundation; either version 2
|
9 |
* of the License, or (at your option) any later version.
|
10 |
*
|
11 |
* This program is distributed in the hope that it will be useful,
|
12 |
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
13 |
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
14 |
* GNU General Public License for more details.
|
15 |
*
|
16 |
* You should have received a copy of the GNU General Public License
|
17 |
* along with this program; if not, write to the Free Software
|
18 |
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
|
19 |
* MA 02110-1301, USA.
|
20 |
*
|
21 |
*/
|
22 |
package org.gvsig.raster.impl.datastruct; |
23 |
|
24 |
import java.awt.Dimension; |
25 |
import java.awt.geom.AffineTransform; |
26 |
import java.awt.geom.Dimension2D; |
27 |
import java.awt.geom.Point2D; |
28 |
import java.awt.geom.Rectangle2D; |
29 |
|
30 |
import org.cresques.cts.ICoordTrans; |
31 |
import org.cresques.cts.IProjection; |
32 |
import org.gvsig.compat.CompatLocator; |
33 |
import org.gvsig.fmap.dal.coverage.datastruct.Extent; |
34 |
import org.gvsig.fmap.dal.coverage.datastruct.ViewPortData; |
35 |
import org.gvsig.timesupport.Time; |
36 |
import org.gvsig.tools.persistence.case1.model.ViewPort; |
37 |
|
38 |
|
39 |
/**
|
40 |
* Datos de vista sobre las capas.
|
41 |
*
|
42 |
* Mantiene un conjunto de datos necesarios, que describen el modo de
|
43 |
* ver las capas actual.
|
44 |
*
|
45 |
* @author "Luis W. Sevilla"
|
46 |
*/
|
47 |
public class DefaultViewPortData implements ViewPortData { |
48 |
/**
|
49 |
* Tipo de proyecci?n de la vista.
|
50 |
*/
|
51 |
IProjection proj = null;
|
52 |
|
53 |
/**
|
54 |
* Sistema de coordenadas de la vista.
|
55 |
*/
|
56 |
IProjection cs = null;
|
57 |
|
58 |
/**
|
59 |
* Amplitud de la vista, en coordenadas proyectadas.
|
60 |
*/
|
61 |
Extent extent = null;
|
62 |
|
63 |
/**
|
64 |
* Tama?o de la vista, en coordenadas de dispositivo.
|
65 |
*/
|
66 |
Dimension2D viewSize = null; |
67 |
|
68 |
/**
|
69 |
* Transformaci?n af?n usada en la vista actual.
|
70 |
*/
|
71 |
public AffineTransform mat = null; |
72 |
|
73 |
/**
|
74 |
* Informaci?n de tama?o en pixeles. Esta no es calculada. Solo se almacena
|
75 |
* si el usuario la necesita.
|
76 |
*/
|
77 |
public Point2D pxSize = null; |
78 |
|
79 |
private Time time = null; |
80 |
|
81 |
/**
|
82 |
* Resoluci?n (Puntos por pulgada) de la vista actual.
|
83 |
* Se necesita para los c?lculos de escala geogr?fica.
|
84 |
*
|
85 |
* Ojo: la vista podr?a tener una resoluci?n distinta que la pantalla (por
|
86 |
* ejemplo en el Layout), por lo que los usuarios de esta clase deber?an
|
87 |
* hacer un setDPI con la resoluci?n correcta (normalmente la del ViewPort).
|
88 |
*
|
89 |
* @see ViewPort#getDPI()
|
90 |
*/
|
91 |
int dpi = CompatLocator.getGraphicsUtils().getScreenDPI();
|
92 |
|
93 |
public DefaultViewPortData() {
|
94 |
mat = new AffineTransform(); |
95 |
mat.scale(1.0, -1.0); |
96 |
} |
97 |
|
98 |
public DefaultViewPortData(IProjection proj, Extent extent, Dimension2D size) { |
99 |
this.proj = proj;
|
100 |
this.extent = extent;
|
101 |
this.viewSize = size;
|
102 |
mat = new AffineTransform(); |
103 |
mat.scale(1.0, -1.0); |
104 |
} |
105 |
|
106 |
public IProjection getProjection() {
|
107 |
return proj;
|
108 |
} |
109 |
|
110 |
public void setProjection(IProjection proj) { |
111 |
this.proj = proj;
|
112 |
} |
113 |
|
114 |
public void reProject(ICoordTrans rp) { |
115 |
// TODO metodo reProject pendiente de implementar
|
116 |
} |
117 |
|
118 |
public void setCoordSys(IProjection cs) { |
119 |
this.cs = cs;
|
120 |
} |
121 |
|
122 |
//public void setCoordTrans(ICoordTrans ct) { this.ct = ct; }
|
123 |
public AffineTransform getMat() { |
124 |
return mat;
|
125 |
} |
126 |
|
127 |
public void setMat(AffineTransform mat) { |
128 |
this.mat = mat;
|
129 |
} |
130 |
|
131 |
public Object clone() { |
132 |
DefaultViewPortData vp = new DefaultViewPortData();
|
133 |
|
134 |
if (mat != null) { |
135 |
vp.mat = new AffineTransform(mat); |
136 |
} |
137 |
|
138 |
if (extent != null) { |
139 |
vp.extent = new ExtentImpl(extent);
|
140 |
} |
141 |
|
142 |
vp.proj = proj; |
143 |
vp.viewSize = viewSize; |
144 |
vp.dpi = dpi; |
145 |
|
146 |
return vp;
|
147 |
} |
148 |
|
149 |
/**
|
150 |
* Obtiene el ancho de la vista
|
151 |
* @return
|
152 |
*/
|
153 |
public double getWidth() { |
154 |
return viewSize.getWidth();
|
155 |
} |
156 |
|
157 |
/**
|
158 |
* Obtiene el alto de la vista
|
159 |
* @return
|
160 |
*/
|
161 |
public double getHeight() { |
162 |
return viewSize.getHeight();
|
163 |
} |
164 |
|
165 |
/**
|
166 |
* Obtiene el tama?o de la vista
|
167 |
*/
|
168 |
public Dimension2D getSize() { |
169 |
return viewSize;
|
170 |
} |
171 |
|
172 |
/**
|
173 |
* Asigna el ancho y alto de la vista
|
174 |
* @param w Ancho
|
175 |
* @param h Alto
|
176 |
*/
|
177 |
public void setSize(double w, double h) { |
178 |
setSize(new Dimension((int) w, (int) h)); |
179 |
} |
180 |
|
181 |
public void setSize(Dimension2D sz) { |
182 |
viewSize = sz; |
183 |
reExtent(); |
184 |
} |
185 |
|
186 |
public Extent getExtent() {
|
187 |
return extent;
|
188 |
} |
189 |
|
190 |
public void setExtent(Dimension2D sz) { |
191 |
Point2D.Double pt0 = new Point2D.Double(0, 0); |
192 |
Point2D.Double ptSz = new Point2D.Double(sz.getWidth(), sz.getHeight()); |
193 |
|
194 |
try {
|
195 |
mat.inverseTransform(pt0, pt0); |
196 |
mat.inverseTransform(ptSz, ptSz); |
197 |
} catch (Exception e) { |
198 |
e.printStackTrace(); |
199 |
} |
200 |
|
201 |
extent = new ExtentImpl(pt0, ptSz);
|
202 |
} |
203 |
|
204 |
/**
|
205 |
* Asigna la extensi?n del raster
|
206 |
* @param ext Extent
|
207 |
*/
|
208 |
public void setExtent(Extent ext) { |
209 |
extent = ext; |
210 |
} |
211 |
|
212 |
public void reExtent() { |
213 |
setExtent(viewSize); |
214 |
} |
215 |
|
216 |
public void setDPI(int dpi) { |
217 |
this.dpi = dpi;
|
218 |
} |
219 |
|
220 |
public int getDPI() { |
221 |
return this.dpi; |
222 |
} |
223 |
|
224 |
/**
|
225 |
* zoom a un marco.
|
226 |
*
|
227 |
* @param extent
|
228 |
*/
|
229 |
public void zoom(Extent extent) { |
230 |
double[] scale = extent.getScale(getWidth(), getHeight()); |
231 |
double escala = Math.min(scale[0], scale[1]); |
232 |
|
233 |
mat.setToIdentity(); |
234 |
mat.scale(escala, -escala); |
235 |
mat.translate(-extent.minX(), -extent.maxY()); |
236 |
this.extent = extent;
|
237 |
reExtent(); |
238 |
} |
239 |
|
240 |
/**
|
241 |
* zoom centrado en un punto.
|
242 |
*
|
243 |
* @param zoom
|
244 |
* @param pt
|
245 |
*/
|
246 |
public void zoom(double zoom, Point2D pt) { |
247 |
zoom(zoom, zoom, pt); |
248 |
} |
249 |
|
250 |
public void zoom(double zx, double zy, Point2D pt) { |
251 |
centerAt(pt); |
252 |
mat.scale(zx, zy); |
253 |
centerAt(pt); |
254 |
reExtent(); |
255 |
} |
256 |
|
257 |
/**
|
258 |
* Zoom a una escala (geogr?fica);
|
259 |
*
|
260 |
* @param scale
|
261 |
*/
|
262 |
public void zoomToCenter(double f) { |
263 |
Point2D.Double ptCenter = new Point2D.Double(getWidth() / 2.0, |
264 |
getHeight() / 2.0);
|
265 |
|
266 |
try {
|
267 |
mat.inverseTransform(ptCenter, ptCenter); |
268 |
} catch (Exception e) { |
269 |
e.printStackTrace(); |
270 |
} |
271 |
|
272 |
zoom(f, ptCenter); |
273 |
} |
274 |
|
275 |
/**
|
276 |
* Centrar en un punto.
|
277 |
*
|
278 |
* @param pt
|
279 |
*/
|
280 |
public void centerAt(Point2D pt) { |
281 |
Point2D.Double ptCenter = new Point2D.Double(getWidth() / 2.0, |
282 |
getHeight() / 2.0);
|
283 |
|
284 |
try {
|
285 |
mat.inverseTransform(ptCenter, ptCenter); |
286 |
mat.translate(ptCenter.x - pt.getX(), ptCenter.y - pt.getY()); |
287 |
} catch (Exception e) { |
288 |
e.printStackTrace(); |
289 |
} |
290 |
|
291 |
reExtent(); |
292 |
} |
293 |
|
294 |
/**
|
295 |
* Desplaza la vista actual.
|
296 |
*
|
297 |
* @param pt
|
298 |
*/
|
299 |
public void pan(Point2D ptIni, Point2D ptFin) { |
300 |
mat.translate(ptFin.getX() - ptIni.getX(), ptFin.getY() - ptIni.getY()); |
301 |
reExtent(); |
302 |
} |
303 |
|
304 |
public Point2D getCenter() { |
305 |
Point2D.Double ptCenter = new Point2D.Double(getWidth() / 2.0, |
306 |
getHeight() / 2.0);
|
307 |
|
308 |
try {
|
309 |
mat.inverseTransform(ptCenter, ptCenter); |
310 |
} catch (Exception e) { |
311 |
e.printStackTrace(); |
312 |
} |
313 |
|
314 |
return ptCenter;
|
315 |
} |
316 |
|
317 |
/**
|
318 |
* Calcula la transformaci?n af?n.
|
319 |
*/
|
320 |
public void calculateAffineTransform() { |
321 |
if ((viewSize == null) || (extent == null) || |
322 |
(viewSize.getWidth() <= 0) || (viewSize.getHeight() <= 0)) |
323 |
return;
|
324 |
|
325 |
AffineTransform escalado = new AffineTransform(); |
326 |
AffineTransform translacion = new AffineTransform(); |
327 |
|
328 |
double escalaX;
|
329 |
double escalaY;
|
330 |
|
331 |
escalaX = viewSize.getWidth() / extent.width(); |
332 |
escalaY = viewSize.getHeight() / extent.height(); |
333 |
|
334 |
double xCenter = extent.getCenterX();
|
335 |
double yCenter = extent.getCenterY();
|
336 |
double newHeight;
|
337 |
double newWidth;
|
338 |
|
339 |
Rectangle2D adjustedExtent = new Rectangle2D.Double(); |
340 |
double scale = 0; |
341 |
|
342 |
if (escalaX < escalaY) {
|
343 |
scale = escalaX; |
344 |
newHeight = viewSize.getHeight() / scale; |
345 |
adjustedExtent.setRect(xCenter - (extent.width() / 2.0),
|
346 |
yCenter - (newHeight / 2.0), extent.width(), newHeight);
|
347 |
} else {
|
348 |
scale = escalaY; |
349 |
newWidth = viewSize.getWidth() / scale; |
350 |
adjustedExtent.setRect(xCenter - (newWidth / 2.0),
|
351 |
yCenter - (extent.height() / 2.0), newWidth,
|
352 |
extent.height()); |
353 |
} |
354 |
escalado.setToScale(scale, -scale); |
355 |
translacion.setToTranslation(-extent.getULX(), -extent.getULY()); |
356 |
|
357 |
mat.setToIdentity(); |
358 |
mat.concatenate(escalado); |
359 |
mat.concatenate(translacion); |
360 |
} |
361 |
|
362 |
public Time getTime() { |
363 |
return time;
|
364 |
} |
365 |
|
366 |
public void setTime(Time time) { |
367 |
this.time = time;
|
368 |
} |
369 |
} |