svn-gvsig-desktop / branches / v2_0_0_prep / libraries / libFMap_geometries / src / org / gvsig / fmap / geom / operation / relationship / Intersects.java @ 40359
History | View | Annotate | Download (3.38 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 |
|
23 |
/*
|
24 |
* AUTHORS (In addition to CIT):
|
25 |
* 2008 IVER T.I. S.A. {{Task}}
|
26 |
*/
|
27 |
|
28 |
/**
|
29 |
*
|
30 |
*/
|
31 |
package org.gvsig.fmap.geom.operation.relationship; |
32 |
|
33 |
import org.gvsig.fmap.geom.Geometry; |
34 |
import org.gvsig.fmap.geom.GeometryLocator; |
35 |
import org.gvsig.fmap.geom.operation.GeometryOperation; |
36 |
import org.gvsig.fmap.geom.operation.GeometryOperationContext; |
37 |
import org.gvsig.fmap.geom.operation.GeometryOperationException; |
38 |
import org.gvsig.fmap.geom.operation.GeometryOperationNotSupportedException; |
39 |
import org.gvsig.fmap.geom.operation.tojts.ToJTS; |
40 |
import org.gvsig.fmap.geom.primitive.impl.DefaultNullGeometry; |
41 |
|
42 |
/**
|
43 |
* @author jmvivo
|
44 |
*
|
45 |
*/
|
46 |
public class Intersects extends GeometryOperation { |
47 |
public static final String NAME = "intersects"; |
48 |
public static final int CODE = GeometryLocator.getGeometryManager(). |
49 |
getGeometryOperationCode(NAME); |
50 |
|
51 |
/*
|
52 |
* (non-Javadoc)
|
53 |
*
|
54 |
* @see org.gvsig.fmap.geom.operation.GeometryOperation#getOperationIndex()
|
55 |
*/
|
56 |
public int getOperationIndex() { |
57 |
return CODE;
|
58 |
} |
59 |
|
60 |
/*
|
61 |
* (non-Javadoc)
|
62 |
*
|
63 |
* @see org.gvsig.fmap.geom.operation.GeometryOperation#invoke(org.gvsig.fmap.geom.Geometry,
|
64 |
* org.gvsig.fmap.geom.operation.GeometryOperationContext)
|
65 |
*/
|
66 |
public Object invoke(Geometry geom, GeometryOperationContext ctx) |
67 |
throws GeometryOperationException {
|
68 |
Geometry otherGeom = (Geometry) ctx.getAttribute("geom");
|
69 |
if (otherGeom instanceof DefaultNullGeometry || geom instanceof DefaultNullGeometry || !otherGeom.getEnvelope().intersects(geom.getEnvelope())){ |
70 |
return new Boolean(false); |
71 |
} |
72 |
// TODO optimizar esto para los rectangulos (envelope)
|
73 |
com.vividsolutions.jts.geom.Geometry jtsGeom = null;
|
74 |
com.vividsolutions.jts.geom.Geometry otherJtsGeom = null;
|
75 |
try {
|
76 |
jtsGeom = (com.vividsolutions.jts.geom.Geometry) geom |
77 |
.invokeOperation(ToJTS.CODE, null);
|
78 |
} catch (GeometryOperationNotSupportedException e) {
|
79 |
throw new GeometryOperationException(geom.getType(), CODE, e); |
80 |
} |
81 |
try {
|
82 |
|
83 |
otherJtsGeom = (com.vividsolutions.jts.geom.Geometry) otherGeom |
84 |
.invokeOperation(ToJTS.CODE, null);
|
85 |
} catch (GeometryOperationNotSupportedException e) {
|
86 |
throw new GeometryOperationException(otherGeom.getType(), CODE, e); |
87 |
} |
88 |
if (jtsGeom!=null && otherJtsGeom!=null) |
89 |
return new Boolean(jtsGeom.intersects(otherJtsGeom)); |
90 |
return new Boolean(false); |
91 |
} |
92 |
|
93 |
} |