root / trunk / extensions / extRasterTools-SE / src / org / gvsig / raster / beans / canvas / layers / functions / SquareRootPowLine.java @ 20057
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1 | 19957 | bsanchez | /* gvSIG. Sistema de Informaci?n Geogr?fica de la Generalitat Valenciana
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2 | *
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3 | * Copyright (C) 2007 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 | package org.gvsig.raster.beans.canvas.layers.functions; |
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20 | |||
21 | import java.awt.Color; |
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22 | import java.awt.Cursor; |
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23 | import java.awt.event.MouseEvent; |
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24 | import java.util.ArrayList; |
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25 | |||
26 | import org.gvsig.raster.beans.canvas.layers.InfoLayer; |
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27 | import org.gvsig.raster.util.MathUtils; |
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28 | import org.gvsig.raster.util.RasterToolsUtil; |
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29 | /**
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30 | * Representa una funcion con posibilidad de arrastre para las funciones
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31 | * raices cuadradas y cuadradas. Con el raton se puede pasar de una a otra
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32 | * directamente.
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33 | *
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34 | * Las formas mas logicas de uso seria pasandole:
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35 | * 1.0: Para una funcion raiz cuadrada
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36 | * -1.0: Para una funcion cuadrada
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37 | * 0.0: Para una funcion lineal
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38 | *
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39 | * @version 02/04/2008
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40 | * @author BorSanZa - Borja S?nchez Zamorano (borja.sanchez@iver.es)
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41 | */
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42 | public class SquareRootPowLine extends StraightLine { |
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43 | /**
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44 | * Numero de puntos que contiene esta funci?n
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45 | */
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46 | private double num = 40.0; |
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47 | |||
48 | 20057 | bsanchez | private double valueFunction = 1.0; |
49 | 19957 | bsanchez | |
50 | /**
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51 | * Constructor. Asigna el color y establece la posicion de la funcion.
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52 | * Los valores normales son 1.0 para raiz cuadrada y -1.0 para cuadrada.
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53 | * El rango va desde -2.0 hasta 2.0. Siendo 0.0 una funcion lineal.
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54 | * @param c
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55 | */
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56 | public SquareRootPowLine(Color c, double point) { |
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57 | super(c);
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58 | setShowSquares(false);
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59 | 20057 | bsanchez | valueFunction = point; |
60 | recalcList(); |
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61 | 19957 | bsanchez | } |
62 | |||
63 | /**
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64 | * Actualiza la barra informativa para saber en que estado se encuentra el
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65 | * componente.
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66 | * Cuando el porcentaje es mayor a 0 siempre estamos en la raiz cuadrada
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67 | * Cuando el porcentaje es menor a 0 siempre estamos en la cuadrada
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68 | * @param perc
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69 | */
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70 | private void setInfoPoint(Double perc) { |
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71 | if (canvas != null) { |
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72 | ArrayList list = canvas.getDrawableElements(InfoLayer.class);
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73 | if (list.size() > 0) { |
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74 | InfoLayer infoLayer = (InfoLayer) list.get(0);
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75 | |||
76 | if (perc == null) { |
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77 | infoLayer.setStatusLeft(null);
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78 | infoLayer.setStatusRight(null);
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79 | canvas.repaint(); |
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80 | return;
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81 | } |
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82 | |||
83 | if (perc.doubleValue() > 0.0) |
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84 | infoLayer.setStatusLeft(RasterToolsUtil.getText(this, "square_root")); |
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85 | else
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86 | infoLayer.setStatusLeft(RasterToolsUtil.getText(this, "pow")); |
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87 | |||
88 | infoLayer.setStatusRight(MathUtils.clipDecimals(Math.abs(perc.doubleValue() * 100.0), 2) + "%"); |
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89 | } |
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90 | } |
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91 | } |
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92 | |||
93 | /**
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94 | * Recalcula todos los puntos de la funcion
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95 | * Posibles rangos para perc:
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96 | * ( 0.0 a 1.0) - Funcion raiz cuadrada con aproximacion al centro
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97 | * ( 1.0 a 2.0) - Funcion raiz cuadrada con aproximacion al borde
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98 | * ( 0.0 a -1.0) - Funcion cuadrada con aproximacion al centro
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99 | * (-1.0 a -2.0) - Funcion cuadrada con aproximacion al borde
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100 | *
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101 | * @param perc
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102 | */
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103 | 20057 | bsanchez | private void recalcList() { |
104 | 19957 | bsanchez | double x, y = 0.0; |
105 | |||
106 | 20057 | bsanchez | setInfoPoint(new Double(valueFunction)); |
107 | 19957 | bsanchez | |
108 | this.listSquare.clear();
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109 | |||
110 | for (int i = 0; i <= num; i++) { |
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111 | x = ((double) i) / num;
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112 | |||
113 | // Aproximacion al centro de una funcion raiz cuadrada
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114 | 20057 | bsanchez | if (valueFunction >= 0.0 && valueFunction <= 1.0) { |
115 | 19957 | bsanchez | y = squareFunction(x); |
116 | 20057 | bsanchez | y = x + ((y - x) * valueFunction); |
117 | 19957 | bsanchez | } |
118 | |||
119 | // Aproximacion al borde de una funcion raiz cuadrada
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120 | 20057 | bsanchez | if (valueFunction > 1.0 && valueFunction <= 2.0) { |
121 | 19957 | bsanchez | y = squareFunction(x); |
122 | 20057 | bsanchez | y = y + ((1.0 - y) * (valueFunction - 1.0)); |
123 | 19957 | bsanchez | } |
124 | |||
125 | // Aproximacion al centro de una funcion cuadrada
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126 | 20057 | bsanchez | if (valueFunction >= -1.0 && valueFunction < 0.0) { |
127 | 19957 | bsanchez | y = powFunction(x); |
128 | 20057 | bsanchez | y = x - ((x - y) * Math.abs(valueFunction));
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129 | 19957 | bsanchez | } |
130 | |||
131 | // Aproximacion al borde de una funcion cuadrada
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132 | 20057 | bsanchez | if (valueFunction >= -2.0 && valueFunction < -1.0) { |
133 | 19957 | bsanchez | y = powFunction(x); |
134 | 20057 | bsanchez | y = y * (1.0 - (Math.abs(valueFunction) - 1.0)); |
135 | 19957 | bsanchez | } |
136 | |||
137 | if (y < 0.0) |
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138 | y = 0.0;
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139 | if (y > 1.0) |
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140 | y = 1.0;
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141 | |||
142 | this.listSquare.add(new Square(x, y)); |
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143 | } |
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144 | } |
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145 | |||
146 | /**
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147 | * Formula para calcular el valor en y de una funcion raiz cuadrada en x
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148 | * @param x
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149 | * @return
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150 | */
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151 | private double squareFunction(double x) { |
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152 | return Math.sqrt(x); |
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153 | } |
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154 | |||
155 | /**
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156 | * Formula para calcular el valor en y de una funcion cuadrada en x
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157 | * @param x
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158 | * @return
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159 | */
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160 | private double powFunction(double x) { |
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161 | return Math.pow(x, 2); |
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162 | } |
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163 | |||
164 | /* (non-Javadoc)
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165 | * @see org.gvsig.raster.beans.canvas.layers.functions.StraightLine#mouseDragged(java.awt.event.MouseEvent)
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166 | */
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167 | public boolean mouseDragged(MouseEvent e) { |
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168 | if (canvas.getCursor().getType() != Cursor.DEFAULT_CURSOR) |
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169 | return true; |
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170 | |||
171 | double x = pixelToValueX(e.getX());
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172 | double y = pixelToValueY(e.getY());
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173 | |||
174 | double y2 = 0.0; |
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175 | |||
176 | // Localizamos el punto del raton para pasar un porcentaje correcto y que
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177 | // asi coincida la funcion con el raton
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178 | if (y >= x) {
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179 | y2 = squareFunction(x); |
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180 | if (y < y2)
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181 | 20057 | bsanchez | valueFunction = (y - x) / (y2 - x); |
182 | 19957 | bsanchez | else
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183 | 20057 | bsanchez | valueFunction = ((y - y2) / (1.0 - y2)) + 1.0; |
184 | 19957 | bsanchez | } else {
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185 | y2 = powFunction(x); |
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186 | |||
187 | if (y > y2)
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188 | 20057 | bsanchez | valueFunction = -Math.abs((y - x) / (y2 - x));
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189 | 19957 | bsanchez | else
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190 | 20057 | bsanchez | valueFunction = -Math.abs((y2 - y) / y2) - 1.0; |
191 | 19957 | bsanchez | } |
192 | |||
193 | 20057 | bsanchez | if (valueFunction < -2.0) |
194 | valueFunction = -2.0;
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195 | 19957 | bsanchez | |
196 | 20057 | bsanchez | if (valueFunction > 2.0) |
197 | valueFunction = 2.0;
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198 | 19957 | bsanchez | |
199 | 20057 | bsanchez | recalcList(); |
200 | 19957 | bsanchez | canvas.repaint(); |
201 | canvas.callDataDragged("line", this); |
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202 | return false; |
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203 | } |
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204 | |||
205 | /* (non-Javadoc)
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206 | * @see org.gvsig.raster.beans.canvas.layers.functions.StraightLine#mouseMoved(java.awt.event.MouseEvent)
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207 | */
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208 | public boolean mouseMoved(MouseEvent e) { |
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209 | return true; |
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210 | } |
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211 | |||
212 | /* (non-Javadoc)
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213 | * @see org.gvsig.raster.beans.canvas.layers.functions.StraightLine#mousePressed(java.awt.event.MouseEvent)
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214 | */
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215 | public boolean mousePressed(MouseEvent e) { |
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216 | return mouseDragged(e);
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217 | } |
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218 | |||
219 | /* (non-Javadoc)
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220 | * @see org.gvsig.raster.beans.canvas.layers.functions.StraightLine#mouseReleased(java.awt.event.MouseEvent)
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221 | */
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222 | public boolean mouseReleased(MouseEvent e) { |
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223 | setInfoPoint(null);
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224 | return true; |
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225 | } |
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226 | 20057 | bsanchez | |
227 | /*
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228 | * (non-Javadoc)
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229 | * @see org.gvsig.raster.beans.canvas.layers.functions.StraightLine#getFunctionType()
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230 | */
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231 | public int getFunctionType() { |
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232 | return 2; |
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233 | } |
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234 | |||
235 | /*
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236 | * (non-Javadoc)
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237 | * @see org.gvsig.raster.beans.canvas.layers.functions.StraightLine#getValueFunction()
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238 | */
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239 | public double getValueFunction() { |
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240 | return valueFunction;
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241 | } |
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242 | 19957 | bsanchez | } |