root / tags / v1_1_Build_1004 / libraries / libFMap / src / com / iver / cit / gvsig / fmap / tools / AreaListenerImpl.java @ 12319
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1 | 1100 | fjp | /* gvSIG. Sistema de Informaci?n Geogr?fica de la Generalitat Valenciana
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2 | *
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3 | * Copyright (C) 2004 IVER T.I. and Generalitat Valenciana.
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4 | *
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5 | * This program is free software; you can redistribute it and/or
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6 | * modify it under the terms of the GNU General Public License
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7 | * as published by the Free Software Foundation; either version 2
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8 | * of the License, or (at your option) any later version.
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9 | *
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10 | * This program is distributed in the hope that it will be useful,
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11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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13 | * GNU General Public License for more details.
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14 | *
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15 | * You should have received a copy of the GNU General Public License
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16 | * along with this program; if not, write to the Free Software
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17 | * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,USA.
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18 | *
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19 | * For more information, contact:
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20 | *
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21 | * Generalitat Valenciana
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22 | * Conselleria d'Infraestructures i Transport
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23 | * Av. Blasco Ib??ez, 50
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24 | * 46010 VALENCIA
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25 | * SPAIN
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26 | *
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27 | * +34 963862235
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28 | * gvsig@gva.es
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29 | * www.gvsig.gva.es
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30 | *
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31 | * or
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32 | *
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33 | * IVER T.I. S.A
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34 | * Salamanca 50
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35 | * 46005 Valencia
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36 | * Spain
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37 | *
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38 | * +34 963163400
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39 | * dac@iver.es
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40 | */
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41 | 288 | vcaballero | package com.iver.cit.gvsig.fmap.tools; |
42 | |||
43 | 9590 | caballero | import com.iver.cit.gvsig.fmap.MapContext; |
44 | 1223 | fernando | import com.iver.cit.gvsig.fmap.MapControl; |
45 | 1050 | vcaballero | import com.iver.cit.gvsig.fmap.ViewPort; |
46 | import com.iver.cit.gvsig.fmap.tools.Events.MeasureEvent; |
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47 | 1221 | fernando | import com.iver.cit.gvsig.fmap.tools.Listeners.PolylineListener; |
48 | 10004 | caballero | import com.iver.cit.gvsig.fmap.tools.geo.Geo; |
49 | 1050 | vcaballero | |
50 | 291 | vcaballero | import java.awt.Cursor; |
51 | import java.awt.Image; |
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52 | 288 | vcaballero | import java.awt.Point; |
53 | 291 | vcaballero | import java.awt.Toolkit; |
54 | 288 | vcaballero | import java.awt.geom.Point2D; |
55 | |||
56 | 291 | vcaballero | import javax.swing.ImageIcon; |
57 | 288 | vcaballero | |
58 | 291 | vcaballero | |
59 | 288 | vcaballero | /**
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60 | 1050 | vcaballero | * Implementaci?n de la interfaz MeasureListener como herramienta para medir el
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61 | * ?rea.
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62 | 288 | vcaballero | *
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63 | * @author Vicente Caballero Navarro
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64 | */
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65 | 1221 | fernando | public class AreaListenerImpl implements PolylineListener { |
66 | 1223 | fernando | private final Image iarea = new ImageIcon(MapControl.class.getResource( |
67 | 1050 | vcaballero | "images/AreaCursor.gif")).getImage();
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68 | 291 | vcaballero | private Cursor cur = Toolkit.getDefaultToolkit().createCustomCursor(iarea, |
69 | 1050 | vcaballero | new Point(16, 16), ""); |
70 | 1223 | fernando | protected MapControl mapCtrl;
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71 | 1050 | vcaballero | protected MeasureEvent event;
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72 | 288 | vcaballero | |
73 | 1050 | vcaballero | /**
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74 | * Crea un nuevo AreaListenerImpl.
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75 | *
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76 | * @param mc MapControl.
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77 | */
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78 | 1223 | fernando | public AreaListenerImpl(MapControl mc) {
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79 | 1050 | vcaballero | this.mapCtrl = mc;
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80 | } |
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81 | 288 | vcaballero | |
82 | 1050 | vcaballero | /**
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83 | 1221 | fernando | * @see com.iver.cit.gvsig.fmap.tools.Listeners.PolylineListener#points(com.iver.cit.gvsig.fmap.tools.Events.MeasureEvent)
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84 | 1050 | vcaballero | */
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85 | public void points(MeasureEvent event) { |
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86 | this.event = event;
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87 | 288 | vcaballero | |
88 | 1050 | vcaballero | double dist = 0; |
89 | double distAll = 0; |
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90 | 288 | vcaballero | |
91 | 1050 | vcaballero | ViewPort vp = mapCtrl.getMapContext().getViewPort(); |
92 | 288 | vcaballero | |
93 | 1050 | vcaballero | for (int i = 0; i < (event.getXs().length - 1); i++) { |
94 | dist = 0;
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95 | 288 | vcaballero | |
96 | 1050 | vcaballero | Point p = new Point(event.getXs()[i].intValue(), |
97 | event.getXs()[i].intValue()); |
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98 | Point p2 = new Point(event.getXs()[i + 1].intValue(), |
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99 | event.getXs()[i + 1].intValue());
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100 | 288 | vcaballero | |
101 | 1050 | vcaballero | ///dist = vp.toMapDistance((int) p.distance(p2));
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102 | dist = vp.distanceWorld(p, p2); |
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103 | distAll += dist; |
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104 | } |
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105 | 288 | vcaballero | |
106 | 1050 | vcaballero | System.out.println("Per?metro = " + distAll + " ?rea = " + |
107 | (returnArea(vp.toMapPoint( |
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108 | new Point2D.Double( |
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109 | event.getXs()[event.getXs().length - 2].doubleValue(),
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110 | event.getYs()[event.getYs().length - 2].doubleValue())))));
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111 | } |
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112 | 288 | vcaballero | |
113 | 10004 | caballero | protected double returnArea(Point2D point) { |
114 | Double[] xs=event.getXs(); |
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115 | Double[] ys=event.getYs(); |
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116 | if (mapCtrl.getProjection().isProjected()) {
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117 | return returnCoordsArea(xs,ys,point);
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118 | } |
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119 | return returnGeoCArea(xs,ys,point);
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120 | } |
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121 | public double returnGeoCArea(Double[] xs,Double[] ys,Point2D point) { |
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122 | double[] lat=new double[xs.length]; |
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123 | double[] lon=new double[xs.length]; |
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124 | for (int K= 0; K < xs.length; K++){ |
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125 | lon[K]= xs[K].doubleValue()/Geo.Degree; |
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126 | lat[K]= ys[K].doubleValue()/Geo.Degree; |
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127 | } |
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128 | 10378 | caballero | return (Geo.sphericalPolyArea(lat,lon,xs.length-1)*Geo.SqM); |
129 | 10004 | caballero | } |
130 | 1050 | vcaballero | /**
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131 | * Calcula el ?rea.
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132 | *
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133 | * @param aux ?ltimo punto.
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134 | *
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135 | * @return ?rea.
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136 | */
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137 | 10004 | caballero | public double returnCoordsArea(Double[] xs,Double[] ys, Point2D point) { |
138 | Point2D aux=point;
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139 | double elArea = 0.0; |
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140 | 1050 | vcaballero | Point2D pPixel;
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141 | Point2D p = new Point2D.Double(); |
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142 | Point2D.Double pAnt = new Point2D.Double(); |
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143 | ViewPort vp = mapCtrl.getMapContext().getViewPort(); |
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144 | 10004 | caballero | for (int pos = 0; pos < xs.length-1; pos++) { |
145 | pPixel = new Point2D.Double(xs[pos].doubleValue(), |
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146 | ys[pos].doubleValue()); |
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147 | 4226 | caballero | p = pPixel;//vp.toMapPoint(pPixel);
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148 | if (pos == 0) { |
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149 | 1050 | vcaballero | pAnt.x = aux.getX(); |
150 | pAnt.y = aux.getY(); |
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151 | } |
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152 | elArea = elArea + ((pAnt.x - p.getX()) * (pAnt.y + p.getY())); |
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153 | pAnt.setLocation(p); |
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154 | } |
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155 | 291 | vcaballero | |
156 | 1050 | vcaballero | elArea = elArea + ((pAnt.x - aux.getX()) * (pAnt.y + aux.getY())); |
157 | elArea = Math.abs(elArea / 2.0); |
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158 | 10004 | caballero | return (elArea*(Math.pow(MapContext.CHANGEM[vp.getMapUnits()],2))); |
159 | 1050 | vcaballero | } |
160 | |||
161 | 291 | vcaballero | /**
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162 | * @see com.iver.cit.gvsig.fmap.tools.Listeners.ToolListener#getCursor()
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163 | */
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164 | public Cursor getCursor() { |
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165 | return cur;
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166 | } |
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167 | 363 | fernando | |
168 | /**
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169 | 1221 | fernando | * @see com.iver.cit.gvsig.fmap.tools.Listeners.PolylineListener#pointFixed(com.iver.cit.gvsig.fmap.tools.Events.MeasureEvent)
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170 | 363 | fernando | */
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171 | public void pointFixed(MeasureEvent event) { |
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172 | } |
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173 | |||
174 | /**
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175 | 1221 | fernando | * @see com.iver.cit.gvsig.fmap.tools.Listeners.PolylineListener#polylineFinished(com.iver.cit.gvsig.fmap.tools.Events.MeasureEvent)
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176 | 363 | fernando | */
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177 | public void polylineFinished(MeasureEvent event) { |
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178 | } |
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179 | |||
180 | /**
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181 | * @see com.iver.cit.gvsig.fmap.tools.Listeners.ToolListener#cancelDrawing()
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182 | */
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183 | public boolean cancelDrawing() { |
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184 | return false; |
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185 | } |
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186 | 291 | vcaballero | } |