1 | /* |
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2 | * $Id: VectorCartesianRenderer.java,v 1.12 2002/06/26 23:18:23 dwd Exp $ |
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3 | * |
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4 | * This software is provided by NOAA for full, free and open release. It is |
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5 | * understood by the recipient/user that NOAA assumes no liability for any |
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6 | * errors contained in the code. Although this software is released without |
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7 | * conditions or restrictions in its use, it is expected that appropriate |
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8 | * credit be given to its author and to the National Oceanic and Atmospheric |
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9 | * Administration should the software be included by the recipient as an |
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10 | * element in other product development. |
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11 | */ |
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12 | |
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13 | package gov.noaa.pmel.sgt; |
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14 | |
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15 | import gov.noaa.pmel.sgt.dm.SGTVector; |
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16 | import gov.noaa.pmel.sgt.dm.SGTData; |
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17 | import gov.noaa.pmel.sgt.dm.Collection; |
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18 | |
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19 | import gov.noaa.pmel.util.GeoDate; |
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20 | import gov.noaa.pmel.util.Debug; |
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21 | |
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22 | import java.awt.Graphics2D; |
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23 | import java.awt.BasicStroke; |
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24 | import java.awt.Stroke; |
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25 | import java.awt.geom.GeneralPath; |
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26 | //import java.awt.geom.AffineTransform; |
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27 | |
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28 | import java.util.Vector; |
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29 | import java.util.Enumeration; |
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30 | import java.awt.Graphics; |
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31 | import java.awt.Event; |
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32 | import java.awt.Point; |
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33 | import java.awt.Color; |
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34 | import java.awt.Rectangle; |
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35 | import java.beans.PropertyChangeEvent; |
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36 | |
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37 | /** |
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38 | * Produces a vector plot. If |
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39 | * a second data set is specified it must have the same shape as the first. |
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40 | * |
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41 | * @author Donald Denbo |
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42 | * @version $Revision: 1.12 $, $Date: 2002/06/26 23:18:23 $ |
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43 | * @since 2.1 |
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44 | */ |
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45 | public class VectorCartesianRenderer extends CartesianRenderer { |
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46 | /** |
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47 | * @link aggregation |
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48 | * @label attr |
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49 | */ |
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50 | private VectorAttribute attr_ = null; |
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51 | |
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52 | /** |
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53 | * @link aggregation |
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54 | * @label vector |
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55 | */ |
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56 | private SGTVector vector_ = null; |
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57 | private Collection collection_ = null; |
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58 | private float slope_; |
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59 | private float xoff_; |
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60 | private float yoff_; |
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61 | |
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62 | /** |
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63 | * Get the <code>Attribute</code> associated with the data. |
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64 | */ |
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65 | public Attribute getAttribute() { |
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66 | return attr_; |
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67 | } |
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68 | |
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69 | private void drawVector(Graphics g, SGTVector vector, |
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70 | VectorAttribute attr) { |
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71 | |
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72 | Layer ly = cg_.getLayer(); |
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73 | Graphics2D g2 = (Graphics2D)g; |
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74 | slope_ = (float)ly.getXSlope(); |
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75 | xoff_ = (float)ly.getXOffset(); |
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76 | yoff_ = (float)ly.getYOffset(); |
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77 | GeneralPath gp = null; |
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78 | Stroke savedStroke = g2.getStroke(); |
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79 | BasicStroke stroke = new BasicStroke(attr_.getWidth(), |
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80 | attr_.getCapStyle(), |
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81 | attr_.getMiterStyle(), |
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82 | attr_.getMiterLimit()); |
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83 | g2.setStroke(stroke); |
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84 | // |
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85 | // a 1 unit lenght vector with a headScale of 1.0 will |
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86 | // create a head barb that is 1.05948 long. A factor of |
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87 | // 0.94386 is required to remove this effect |
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88 | // |
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89 | float scale = (float)attr_.getVectorScale(); |
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90 | float headScale = (float)attr_.getHeadScale()*0.94386f; |
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91 | float fixedScale = (float)(headScale*attr_.getHeadFixedSize()); |
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92 | float minSize = (float)attr_.getHeadMinSize(); |
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93 | float maxSize = (float)attr_.getHeadMaxSize(); |
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94 | double angle = attr_.getOffsetAngle()*0.017453293; |
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95 | float tScale; |
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96 | float[] xp, yp; |
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97 | int[] xtail, ytail; |
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98 | int xdhead, ydhead; |
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99 | int xdtemp, ydtemp; |
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100 | float xphead, yphead; |
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101 | int count, size, nout, idx; |
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102 | double[] xValues, yValues; |
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103 | GeoDate[] xTValues, yTValues; |
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104 | double[] uValues, vValues; |
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105 | float vx, vy, vclen; |
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106 | double vdx, vdy; |
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107 | |
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108 | float hx1, hx2; |
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109 | float hy1, hy2; |
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110 | float headX, headY; |
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111 | float orgX, orgY; |
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112 | // |
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113 | // get axes |
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114 | // |
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115 | if(vector.isXTime()) { |
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116 | xTValues = vector.getU().getTimeArray(); |
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117 | size = xTValues.length; |
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118 | xp = new float[size]; |
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119 | for(count=0; count < size; count++) { |
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120 | xp[count] = (float)cg_.getXUtoP(xTValues[count]); |
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121 | } |
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122 | } else { |
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123 | xValues = vector.getU().getXArray(); |
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124 | size = xValues.length; |
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125 | xp = new float[size]; |
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126 | for(count=0; count < size; count++) { |
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127 | xp[count] = (float)cg_.getXUtoP(xValues[count]); |
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128 | } |
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129 | } |
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130 | // |
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131 | if(vector.isYTime()) { |
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132 | yTValues = vector.getU().getTimeArray(); |
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133 | size = yTValues.length; |
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134 | yp = new float[size]; |
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135 | for(count=0; count < size; count++) { |
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136 | yp[count] = (float)cg_.getYUtoP(yTValues[count]); |
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137 | } |
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138 | } else { |
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139 | yValues = vector.getU().getYArray(); |
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140 | size = yValues.length; |
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141 | yp = new float[size]; |
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142 | for(count=0; count < size; count++) { |
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143 | yp[count] = (float)cg_.getYUtoP(yValues[count]); |
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144 | } |
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145 | } |
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146 | // |
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147 | // get u & v |
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148 | // |
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149 | uValues = vector.getU().getZArray(); |
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150 | vValues = vector.getV().getZArray(); |
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151 | // |
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152 | xtail = new int[uValues.length]; |
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153 | ytail = new int[uValues.length]; |
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154 | count = 0; |
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155 | // int nx = xp.length; |
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156 | int ny = yp.length; |
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157 | int idx_ny; |
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158 | for(int i=0; i < xp.length; i++) { |
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159 | idx_ny = i*ny; |
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160 | for(int j=0; j < yp.length; j++) { |
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161 | idx = j + idx_ny; |
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162 | if(Double.isNaN(uValues[idx]) || Double.isNaN(vValues[idx])) continue; |
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163 | orgX = xPtoD(xp[i]); |
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164 | orgY = yPtoD(yp[j]); |
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165 | xtail[count] = (int)orgX; |
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166 | ytail[count] = (int)orgY; |
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167 | vdx = uValues[idx]*scale; |
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168 | vdy = vValues[idx]*scale; |
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169 | if(angle != 0.0) { |
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170 | vx = (float)(vdx*Math.cos(angle)-vdy*Math.sin(angle)); |
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171 | vy = (float)(vdy*Math.cos(angle)+vdx*Math.sin(angle)); |
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172 | } else { |
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173 | vx = (float)vdx; |
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174 | vy = (float)vdy; |
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175 | } |
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176 | xphead = xp[i] + vx; |
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177 | yphead = yp[j] + vy; |
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178 | // |
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179 | // draw line |
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180 | // |
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181 | gp = new GeneralPath(); |
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182 | gp.moveTo(orgX, orgY); |
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183 | headX = xPtoD(xphead); |
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184 | headY = yPtoD(yphead); |
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185 | gp.lineTo(headX, headY); |
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186 | // |
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187 | // draw head |
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188 | // |
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189 | // if(true) continue; |
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190 | vclen = (float)Math.sqrt((double)(vx*vx+vy*vy)); |
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191 | if(vclen == 0.0) { |
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192 | g.drawLine((int)headX, (int)headY, (int)headX, (int)headY); |
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193 | } else { |
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194 | if(attr_.getVectorStyle() != VectorAttribute.NO_HEAD) { |
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195 | if(attr_.getVectorStyle() == VectorAttribute.HEAD) { |
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196 | // unscaled head |
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197 | tScale = fixedScale/vclen; |
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198 | hx1 = xPtoD(xphead + (-vx-0.35f*vy)*tScale); |
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199 | hy1 = yPtoD(yphead + (-vy+0.35f*vx)*tScale); |
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200 | hx2 = xPtoD(xphead + (-vx+0.35f*vy)*tScale); |
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201 | hy2 = yPtoD(yphead + (-vy-0.35f*vx)*tScale); |
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202 | gp.moveTo(hx1, hy1); |
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203 | gp.lineTo(headX, headY); |
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204 | gp.lineTo(hx2, hy2); |
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205 | } else { |
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206 | // scaled head |
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207 | if(vclen >= maxSize) { |
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208 | tScale = maxSize*headScale/vclen; |
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209 | } else if(vclen <= minSize) { |
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210 | tScale = minSize*headScale/vclen; |
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211 | } else { |
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212 | tScale = headScale; |
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213 | } |
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214 | hx1 = xPtoD(xphead + (-vx-0.35f*vy)*tScale); |
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215 | hy1 = yPtoD(yphead + (-vy+0.35f*vx)*tScale); |
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216 | hx2 = xPtoD(xphead + (-vx+0.35f*vy)*tScale); |
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217 | hy2 = yPtoD(yphead + (-vy-0.35f*vx)*tScale); |
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218 | gp.moveTo(hx1, hy1); |
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219 | gp.lineTo(headX, headY); |
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220 | gp.lineTo(hx2, hy2); |
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221 | } |
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222 | } |
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223 | } |
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224 | count++; |
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225 | g2.draw(gp); |
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226 | } |
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227 | } |
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228 | g2.setStroke(savedStroke); |
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229 | // |
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230 | // draw mark |
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231 | // |
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232 | if(attr_.getOriginStyle() == VectorAttribute.MARK) { |
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233 | g.setColor(attr_.getMarkColor()); |
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234 | drawMark(g, xtail, ytail, xtail.length, attr_); |
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235 | } |
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236 | } |
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237 | |
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238 | private float xPtoD(float xp) { |
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239 | return slope_*xp + xoff_; |
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240 | } |
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241 | |
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242 | private float yPtoD(float yp) { |
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243 | return yoff_ - slope_*yp; |
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244 | } |
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245 | /** |
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246 | * Draw a mark at the requested location. This routine is used by |
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247 | * VectorCartesianGraph and VectorKey. |
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248 | * |
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249 | * @param g Graphics object |
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250 | * @param xp horizontal coordinate |
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251 | * @param yp vertical coordinate |
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252 | * @param attr vector attribute |
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253 | * @see VectorKey |
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254 | */ |
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255 | protected void drawMark(Graphics g, int[] xp, int[] yp, |
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256 | int npoints, VectorAttribute attr) { |
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257 | Layer ly = cg_.getLayer(); |
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258 | |
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259 | PlotMark pm = new PlotMark(attr.getMark()); |
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260 | pm.setMarkHeightP(attr.getMarkHeightP()); |
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261 | |
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262 | for(int i=0; i < npoints; i++) { |
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263 | pm.paintMark(g, ly, xp[i], yp[i]); |
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264 | } |
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265 | } |
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266 | |
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267 | /** |
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268 | * Default constructor. |
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269 | * |
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270 | * @see CartesianGraph |
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271 | * @see Graph |
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272 | **/ |
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273 | public VectorCartesianRenderer(CartesianGraph cg) { |
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274 | this(cg, (SGTVector)null, null); |
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275 | } |
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276 | /** |
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277 | * Construct a <code>VectorCartesianRenderer</code>. The default |
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278 | * <code>VectorAttribute</code> will be used. |
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279 | * |
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280 | * @param cg the parent <code>CartesianGraph</code> |
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281 | * @param data an <code>SGTVector</code> object |
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282 | * |
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283 | * @see CartesianGraph |
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284 | * @see Graph |
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285 | **/ |
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286 | public VectorCartesianRenderer(CartesianGraph cg, SGTVector vector) { |
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287 | this(cg, vector, null); |
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288 | cg_ = cg; |
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289 | vector_ = vector; |
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290 | } |
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291 | /** |
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292 | * Construct a <code>VectorCartesianRenderer</code>. |
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293 | * |
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294 | * @param cg the parent <code>CartesianGraph</code> |
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295 | * @param vector a <code>SGTVector</code> |
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296 | * @param attr the <code>VectorAttribute</code> |
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297 | * @see CartesianGraph |
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298 | * @see Graph |
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299 | **/ |
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300 | public VectorCartesianRenderer(CartesianGraph cg, |
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301 | SGTVector vector, |
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302 | VectorAttribute attr) { |
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303 | cg_ = cg; |
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304 | vector_ = vector; |
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305 | attr_ = attr; |
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306 | if(attr_ != null) attr_.addPropertyChangeListener(this); |
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307 | } |
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308 | /** |
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309 | * Construct a <code>VectorCartesianRenderer</code>. |
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310 | * |
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311 | * @param cg the parent <code>CartesianGraph</code> |
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312 | * @param col a <code>Collection</code> of <code>SGTVector</code> objects |
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313 | * @param attr the <code>VectorAttribute</code> |
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314 | * @see CartesianGraph |
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315 | * @see Graph |
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316 | **/ |
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317 | public VectorCartesianRenderer(CartesianGraph cg, Collection col, |
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318 | VectorAttribute attr) { |
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319 | cg_ = cg; |
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320 | collection_ = col; |
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321 | attr_ = attr; |
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322 | if(attr_ != null) attr_.addPropertyChangeListener(this); |
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323 | } |
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324 | /** |
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325 | * Render the <code>SGTData</code>. This method should not |
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326 | * be directly called. |
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327 | * |
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328 | * @param g graphics context |
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329 | * |
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330 | * @see Pane#draw |
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331 | */ |
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332 | public void draw(Graphics g) { |
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333 | VectorAttribute attr; |
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334 | Object vector; |
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335 | |
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336 | if(cg_.clipping_) { |
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337 | int xmin, xmax, ymin, ymax; |
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338 | int x, y, width, height; |
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339 | if(cg_.xTransform_.isSpace()) { |
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340 | xmin = cg_.getXUtoD(cg_.xClipRange_.start); |
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341 | xmax = cg_.getXUtoD(cg_.xClipRange_.end); |
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342 | } else { |
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343 | xmin = cg_.getXUtoD(cg_.tClipRange_.start); |
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344 | xmax = cg_.getXUtoD(cg_.tClipRange_.end); |
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345 | } |
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346 | if(cg_.yTransform_.isSpace()) { |
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347 | ymin = cg_.getYUtoD(cg_.yClipRange_.start); |
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348 | ymax = cg_.getYUtoD(cg_.yClipRange_.end); |
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349 | } else { |
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350 | ymin = cg_.getYUtoD(cg_.tClipRange_.start); |
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351 | ymax = cg_.getYUtoD(cg_.tClipRange_.end); |
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352 | } |
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353 | if(xmin < xmax) { |
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354 | x = xmin; |
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355 | width = xmax - xmin; |
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356 | } else { |
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357 | x=xmax; |
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358 | width = xmin - xmax; |
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359 | } |
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360 | if(ymin < ymax) { |
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361 | y = ymin; |
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362 | height = ymax - ymin; |
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363 | } else { |
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364 | y = ymax; |
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365 | height = ymin - ymax; |
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366 | } |
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367 | g.setClip(x, y, width, height); |
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368 | } |
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369 | if(attr_ == null) { |
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370 | attr = new VectorAttribute(1.0, |
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371 | cg_.getPane().getComponent().getForeground()); |
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372 | } else { |
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373 | attr = attr_; |
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374 | } |
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375 | g.setColor(attr.getVectorColor()); |
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376 | if(collection_ == null) { |
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377 | drawVector(g, vector_, attr); |
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378 | } else { |
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379 | for(Enumeration li = collection_.elements(); li.hasMoreElements();) { |
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380 | vector = li.nextElement(); |
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381 | if(vector instanceof SGTVector) { |
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382 | drawVector(g, (SGTVector)vector, attr); |
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383 | } |
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384 | } |
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385 | } |
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386 | |
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387 | // |
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388 | // reset clip |
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389 | // |
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390 | Rectangle rect = cg_.getLayer().getPane().getBounds(); |
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391 | g.setClip(rect); |
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392 | } |
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393 | /** |
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394 | * Set the <code>VectorAttribute</code>. The line appearance is controlled by |
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395 | * this object. |
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396 | * |
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397 | * @param l <code>VectorAttribute</code> |
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398 | **/ |
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399 | public void setVectorAttribute(VectorAttribute l) { |
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400 | if(attr_ != null) attr_.removePropertyChangeListener(this); |
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401 | attr_ = l; |
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402 | if(attr_ != null) attr_.addPropertyChangeListener(this); |
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403 | } |
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404 | /** |
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405 | * Get the <code>VectorAttribute</code>. |
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406 | * |
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407 | * @return <code>VectorAttribute</code> |
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408 | **/ |
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409 | public VectorAttribute getVectorAttribute() { |
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410 | return attr_; |
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411 | } |
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412 | /** |
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413 | * Test if a <code>Collection</code> of <code>SGTVector</code> |
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414 | * was using to construct this renderer. |
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415 | * |
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416 | * @return true if <code>Collection</code> was used |
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417 | */ |
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418 | public boolean hasCollection() { |
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419 | return (collection_ != null); |
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420 | } |
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421 | /** |
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422 | * Get the <code>Collection</code> of <code>SGTVector</code> objects. |
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423 | * |
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424 | * @return <code>Collection</code> |
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425 | */ |
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426 | public Collection getCollection() { |
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427 | return collection_; |
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428 | } |
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429 | /** |
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430 | * Get the <code>SGTVector</code> object. |
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431 | * |
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432 | * @return <code>SGTVector</code> |
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433 | */ |
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434 | public SGTVector getVector(){ |
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435 | return vector_; |
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436 | } |
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437 | /** |
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438 | * Get the associated <code>CartesianGraph</code> object. |
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439 | * |
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440 | * @return <code>CartesianGraph</code> |
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441 | */ |
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442 | public CartesianGraph getCartesianGraph() { |
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443 | return cg_; |
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444 | } |
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445 | |
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446 | public void propertyChange(PropertyChangeEvent evt) { |
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447 | // if(Debug.EVENT) { |
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448 | // System.out.println("VectorCartesianRenderer: " + evt); |
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449 | // System.out.println(" " + evt.getPropertyName()); |
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450 | // } |
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451 | modified("VectorCartesianRenderer: propertyChange(" + |
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452 | evt.getSource().toString() + "[" + |
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453 | evt.getPropertyName() + "]" + ")"); |
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454 | } |
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455 | public SGTData getDataAt(Point pt) { |
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456 | return null; |
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457 | } |
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458 | } |
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