Statistics
| Revision:

root / branches / Mobile_Compatible_Hito_1 / libProjectionCresques / src / org / gvsig / projection / cresques / cts / gt2 / CSLambertCC.java @ 21932

History | View | Annotate | Download (5.01 KB)

1
/*
2
 * Cresques Mapping Suite. Graphic Library for constructing mapping applications.
3
 *
4
 * Copyright (C) 2004-5.
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., 59 Temple Place - Suite 330, Boston, MA  02111-1307,USA.
19
 *
20
 * For more information, contact:
21
 *
22
 * cresques@gmail.com
23
 */
24
package org.gvsig.projection.cresques.cts.gt2;
25

    
26
import org.geotools.cs.AxisInfo;
27
import org.geotools.cs.GeographicCoordinateSystem;
28
import org.geotools.cs.Projection;
29
import org.geotools.units.Unit;
30
import org.opengis.referencing.FactoryException;
31

    
32

    
33
/**
34
 * @author "Luis W. Sevilla" <sevilla_lui@gva.es>
35
 *
36
 */
37
public class CSLambertCC extends CoordSys {
38
    public CSLambertCC(CSDatum datum, double meridian, double origin,
39
                       double sp1, double sp2, double est, double nort) {
40
        super(datum);
41

    
42
        geogCS = new GeographicCoordinateSystem(datum.getName(null),
43
                                                datum.getDatum());
44

    
45
        Unit linearUnit = Unit.METRE;
46

    
47
        javax.media.jai.ParameterList params = csFactory.createProjectionParameterList("Lambert_Conformal_Conic_2SP");
48
        params.setParameter("semi_major",
49
                            datum.getDatum().getEllipsoid().getSemiMajorAxis());
50
        params.setParameter("semi_minor",
51
                            datum.getDatum().getEllipsoid().getSemiMinorAxis());
52
        params.setParameter("central_meridian", meridian);
53
        params.setParameter("latitude_of_origin", origin);
54
        params.setParameter("standard_parallel_1", sp1);
55
        params.setParameter("standard_parallel_2", sp2);
56
        params.setParameter("false_easting", est);
57
        params.setParameter("false_northing", nort);
58

    
59
        try {
60
            Projection projection = csFactory.createProjection("Lambert",
61
                                                               "Lambert_Conformal_Conic_2SP",
62
                                                               params);
63
            projCS = csFactory.createProjectedCoordinateSystem(projection.getName()
64
                                                                         .toString(),
65
                                                               geogCS,
66
                                                               projection,
67
                                                               linearUnit,
68
                                                               AxisInfo.X,
69
                                                               AxisInfo.Y);
70
        } catch (FactoryException e) {
71
            // TODO Bloque catch generado autom?ticamente
72
            e.printStackTrace();
73
        }
74
    }
75

    
76
    public CSLambertCC(CSDatum datum, double meridian, double origin,
77
                    double sf, double est, double nort) {
78
            super(datum);
79
            
80
            geogCS = new GeographicCoordinateSystem(datum.getName(null),
81
                            datum.getDatum());
82
            
83
            Unit linearUnit = Unit.METRE;
84
            
85
            javax.media.jai.ParameterList params = csFactory.createProjectionParameterList("Lambert_Conformal_Conic_1SP");
86
            params.setParameter("semi_major",
87
                            datum.getDatum().getEllipsoid().getSemiMajorAxis());
88
            params.setParameter("semi_minor",
89
                            datum.getDatum().getEllipsoid().getSemiMinorAxis());
90
            params.setParameter("central_meridian", meridian);
91
            params.setParameter("latitude_of_origin", origin);
92
            params.setParameter("scale_factor", sf);
93
            params.setParameter("false_easting", est);
94
            params.setParameter("false_northing", nort);
95
            
96
            try {
97
                    Projection projection = csFactory.createProjection("Lambert",
98
                                    "Lambert_Conformal_Conic_1SP",
99
                                        params);
100
                    projCS = csFactory.createProjectedCoordinateSystem(projection.getName()
101
                                    .toString(),
102
                                        geogCS,
103
                                        projection,
104
                                        linearUnit,
105
                                        AxisInfo.X,
106
                                        AxisInfo.Y);
107
            } catch (FactoryException e) {
108
                    // TODO Bloque catch generado autom?ticamente
109
                    e.printStackTrace();
110
            }
111
    }
112
    
113
    public double getScale(double minX, double maxX, double w, double dpi) {
114
        double scale = super.getScale(minX, maxX, w, dpi);
115

    
116
        if (projCS != null) { // Es geogr?fico; calcula la escala.
117
            scale = ((maxX - minX) * // metros
118
                    (dpi / 2.54 * 100.0)) / // px / metro
119
                    w; // pixels
120
        }
121

    
122
        return scale;
123
    }
124
    
125
    public String toString() {
126
        return projCS.toString();
127
    }
128
}