svn-gvsig-desktop / tags / gvSIGv0_6_1RELEASE / libraries / libCq CMS for java.old / src / org / cresques / geo / Projection.java @ 5222
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| 1 | 2809 | nacho | /*
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| 2 | * Cresques Mapping Suite. Graphic Library for constructing mapping applications.
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| 3 | *
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| 4 | * Copyright (C) 2004-5.
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| 5 | *
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| 6 | * This program is free software; you can redistribute it and/or
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| 7 | * modify it under the terms of the GNU General Public License
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| 8 | * as published by the Free Software Foundation; either version 2
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| 9 | * of the License, or (at your option) any later version.
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| 10 | *
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| 11 | * This program is distributed in the hope that it will be useful,
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| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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| 14 | * GNU General Public License for more details.
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| 15 | *
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| 16 | * You should have received a copy of the GNU General Public License
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| 17 | * along with this program; if not, write to the Free Software
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| 18 | * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,USA.
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| 19 | *
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| 20 | * For more information, contact:
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| 21 | *
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| 22 | * cresques@gmail.com
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| 23 | */
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| 24 | 2 | luisw | package org.cresques.geo; |
| 25 | |||
| 26 | 2809 | nacho | import org.cresques.cts.IDatum; |
| 27 | import org.cresques.cts.IProjection; |
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| 28 | |||
| 29 | 2 | luisw | import java.awt.Color; |
| 30 | import java.awt.Graphics2D; |
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| 31 | import java.awt.geom.Point2D; |
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| 32 | |||
| 33 | 92 | luisw | |
| 34 | abstract public class Projection implements IProjection { |
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| 35 | 2809 | nacho | public static int NORTH = 0; |
| 36 | public static int SOUTH = 1; |
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| 37 | static String name = "Sin Proyeccion"; |
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| 38 | static String abrev = "None"; |
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| 39 | private static final Color basicGridColor = new Color(64, 64, 64, 128); |
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| 40 | Color gridColor = basicGridColor;
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| 41 | Ellipsoid eli = Ellipsoid.hayford; |
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| 42 | Graticule grid; |
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| 43 | |||
| 44 | public Projection() {
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| 45 | eli = Ellipsoid.hayford; |
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| 46 | } |
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| 47 | |||
| 48 | public Projection(Ellipsoid e) {
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| 49 | eli = e; |
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| 50 | } |
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| 51 | |||
| 52 | public String getName() { |
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| 53 | return name;
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| 54 | } |
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| 55 | |||
| 56 | abstract public String getAbrev(); |
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| 57 | |||
| 58 | public IDatum getDatum() {
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| 59 | return eli;
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| 60 | } |
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| 61 | |||
| 62 | public double[] getElliPar() { |
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| 63 | return eli.getParam();
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| 64 | } |
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| 65 | |||
| 66 | abstract public Point2D createPoint(double x, double y); |
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| 67 | |||
| 68 | public Point2D createPoint(Point2D pt) { |
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| 69 | return createPoint(pt.getX(), pt.getY());
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| 70 | } |
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| 71 | |||
| 72 | public static IProjection getProjectionByName(IDatum eli, String name) { |
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| 73 | if (name.indexOf("UTM") >= 0) { |
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| 74 | return UtmZone.getProjectionByName(eli, name);
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| 75 | } |
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| 76 | |||
| 77 | if (name.indexOf("GEO") >= 0) { |
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| 78 | return Geodetic.getProjectionByName(eli, name);
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| 79 | } |
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| 80 | |||
| 81 | if (name.indexOf("MERC") >= 0) { |
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| 82 | return Mercator.getProjectionByName(eli, name);
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| 83 | } |
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| 84 | |||
| 85 | return null; |
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| 86 | } |
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| 87 | |||
| 88 | public ReProjection getReproyectionTo(Projection proj) {
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| 89 | ReProjection rp = new ReProjection(this, proj); |
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| 90 | |||
| 91 | return rp;
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| 92 | } |
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| 93 | |||
| 94 | abstract public Point2D toGeo(Point2D pt); |
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| 95 | |||
| 96 | abstract public Point2D fromGeo(Point2D gPt, Point2D mPt); |
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| 97 | |||
| 98 | public void setGridColor(Color c) { |
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| 99 | gridColor = c; |
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| 100 | } |
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| 101 | |||
| 102 | public Color getGridColor() { |
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| 103 | return gridColor;
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| 104 | } |
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| 105 | |||
| 106 | public static String coordToString(double coord, String fmt, boolean isLat) { |
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| 107 | String txt = fmt;
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| 108 | int donde;
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| 109 | donde = txt.indexOf("%G");
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| 110 | |||
| 111 | if (donde >= 0) { |
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| 112 | int deg = (int) coord; |
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| 113 | |||
| 114 | if ((fmt.indexOf("%N") >= 0) && (deg < 0)) { |
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| 115 | deg = -deg; |
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| 116 | } |
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| 117 | |||
| 118 | txt = txt.substring(0, donde) + Integer.toString(deg) + |
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| 119 | txt.substring(donde + 2);
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| 120 | } |
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| 121 | |||
| 122 | donde = txt.indexOf("%M");
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| 123 | |||
| 124 | if (donde >= 0) { |
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| 125 | int min = (int) ((coord - (int) coord) * 60.0) % 60; |
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| 126 | |||
| 127 | if ((fmt.indexOf("%N") >= 0) && (min < 0)) { |
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| 128 | min = -min; |
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| 129 | } |
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| 130 | |||
| 131 | txt = txt.substring(0, donde) + Integer.toString(min) + |
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| 132 | txt.substring(donde + 2);
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| 133 | ; |
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| 134 | } |
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| 135 | |||
| 136 | donde = txt.indexOf("%N");
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| 137 | |||
| 138 | if (donde >= 0) { |
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| 139 | String t = ""; |
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| 140 | |||
| 141 | if (isLat) {
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| 142 | if (coord > 0) { |
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| 143 | t = "N";
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| 144 | } else if (coord < 0) { |
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| 145 | t = "S";
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| 146 | } |
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| 147 | } else {
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| 148 | if (coord > 0) { |
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| 149 | t = "E";
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| 150 | } else if (coord < 0) { |
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| 151 | t = "W";
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| 152 | } |
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| 153 | } |
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| 154 | |||
| 155 | txt = txt.substring(0, donde) + t + txt.substring(donde + 2); |
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| 156 | ; |
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| 157 | } |
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| 158 | |||
| 159 | return txt;
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| 160 | } |
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| 161 | |||
| 162 | abstract public void drawGrid(Graphics2D g, ViewPortData vp); |
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| 163 | 4462 | luisw2 | |
| 164 | public boolean isProjected() { |
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| 165 | return false; |
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| 166 | } |
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| 167 | 2 | luisw | } |