Mercurial > dive4elements > gnv-client
annotate gnv-artifacts/src/main/java/de/intevation/gnv/jfreechart/PolygonRenderer.java @ 592:3c939c95c477
Removed accidental checkin of Test-Shapefiles
gnv-artifacts/trunk@647 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author | Tim Englich <tim.englich@intevation.de> |
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date | Fri, 29 Jan 2010 13:28:28 +0000 |
parents | bc5901bb4525 |
children | 9a828e5a2390 |
rev | line source |
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1 package de.intevation.gnv.jfreechart; |
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2 |
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3 import java.util.ArrayList; |
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4 |
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5 import java.awt.Color; |
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6 import java.awt.Graphics2D; |
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7 import java.awt.Paint; |
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8 import java.awt.Shape; |
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9 import java.awt.BasicStroke; |
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10 import java.awt.FontMetrics; |
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11 import java.awt.Font; |
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12 |
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13 import java.awt.geom.GeneralPath; |
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14 import java.awt.geom.Rectangle2D; |
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15 import java.awt.geom.Rectangle2D.Double; |
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16 |
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17 import org.jfree.data.Range; |
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18 |
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19 import org.jfree.chart.axis.ValueAxis; |
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20 |
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21 import org.jfree.ui.RectangleEdge; |
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22 |
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23 import org.apache.log4j.Logger; |
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24 |
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25 import org.jfree.text.TextUtilities; |
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26 |
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27 |
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28 /** |
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29 * @author Ingo Weinzierl (ingo.weinzierl@intevation.de) |
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30 * @author Sascha L. Teichmann (sascha.teichmann@intevation.de) |
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31 */ |
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32 public class PolygonRenderer |
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33 { |
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34 private static Logger log = Logger.getLogger( |
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35 PolygonRenderer.class); |
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36 |
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37 public interface PaintLookup { |
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38 |
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39 Paint getPaint(int index); |
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40 |
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41 } // interface PaintLookup |
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42 |
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43 public static class DefaultLabelGenerator |
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44 implements PolygonSeriesLabelGenerator |
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45 { |
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46 public DefaultLabelGenerator() { |
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47 } |
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48 |
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49 public String generateLabel(PolygonSeries series) { |
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50 Object label = series.getAttribute("label"); |
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51 return label != null |
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52 ? toString(label) |
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53 : null; |
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54 } |
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55 |
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56 protected String toString(Object label) { |
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57 return label.toString(); |
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58 } |
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59 } // class DefaultLabelGenerator |
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60 |
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61 public static final PolygonSeriesLabelGenerator |
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62 DEFAULT_LABEL_GENERATOR_INSTANCE = new DefaultLabelGenerator(); |
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63 |
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64 protected PaintLookup lookup; |
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65 protected PolygonSeriesLabelGenerator labelGenerator; |
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66 |
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67 public PolygonRenderer(PaintLookup lookup) { |
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68 this(lookup, null); |
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69 } |
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70 |
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71 public PolygonRenderer( |
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72 PaintLookup lookup, |
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73 PolygonSeriesLabelGenerator labelGenerator |
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74 ) { |
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75 this.lookup = lookup; |
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76 this.labelGenerator = labelGenerator; |
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77 } |
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78 |
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79 public void drawPolygons( |
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80 Graphics2D graphics, |
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81 PolygonPlot plot, |
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82 Rectangle2D area, |
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83 PolygonDataset dataset |
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84 ) { |
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85 int seriesCount = dataset.getSeriesCount(); |
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86 for (int i = 0; i < seriesCount; i++) { |
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87 PolygonSeries series = dataset.getSeries(i); |
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88 Integer colorIdx = (Integer)series.getAttribute("fill"); |
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89 |
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90 if (colorIdx != null) { |
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91 Paint paint = lookup.getPaint(colorIdx.intValue()); |
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92 graphics.setPaint(paint != null ? paint : Color.black); |
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93 graphics.fill(constructShape(plot, area, series, true)); |
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94 } |
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95 else { |
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96 Number lineWidth = (Number)series.getAttribute("line.width"); |
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97 BasicStroke stroke = new BasicStroke( |
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98 lineWidth != null ? lineWidth.floatValue() : 1f); |
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99 graphics.setStroke(stroke); |
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100 graphics.setPaint(Color.black); |
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101 graphics.draw(constructShape(plot, area, series, false)); |
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102 } |
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103 } |
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104 } |
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105 |
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106 public void drawLabels( |
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107 final Graphics2D graphics, |
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108 final PolygonPlot plot, |
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109 final Rectangle2D area, |
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110 PolygonDataset dataset |
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111 ) { |
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112 if (labelGenerator == null) { |
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113 return; |
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114 } |
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115 |
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116 final ArrayList<Rectangle2D> bboxes = new ArrayList<Rectangle2D>(); |
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117 |
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118 Font font = graphics.getFont(); |
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119 font = font.deriveFont(Font.PLAIN, Math.max(8, font.getSize()-3)); |
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120 graphics.setFont(font); |
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121 FontMetrics metrics = graphics.getFontMetrics(font); |
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122 |
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123 for (int i = dataset.getSeriesCount()-1; i >= 0; --i) { |
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124 PolygonSeries series = dataset.getSeries(i); |
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125 |
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126 String label = labelGenerator.generateLabel(series); |
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127 if (label == null) { |
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128 continue; |
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129 } |
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130 |
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131 final Rectangle2D box = TextUtilities.getTextBounds( |
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132 label, graphics, metrics); |
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133 |
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134 for (int j = series.getItemCount()-1; j >= 0; --j) { |
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135 final CompactXYItems ring = series.getItem(j); |
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136 LevelOrderIndices loi = new LevelOrderIndices(ring.size()-1); |
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137 Rectangle2D r = (Rectangle2D)loi.visit( |
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138 new LevelOrderIndices.Visitor() |
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139 { |
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140 ValueAxis da = plot.getDomainAxis(); |
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141 ValueAxis ra = plot.getRangeAxis(); |
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142 RectangleEdge de = plot.getDomainAxisEdge(); |
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143 RectangleEdge re = plot.getRangeAxisEdge(); |
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144 Rectangle2D.Double r = new Rectangle2D.Double( |
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145 0d, 0d, box.getWidth(), box.getHeight()); |
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146 |
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147 public Object visit(int index) { |
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148 r.x = da.valueToJava2D(ring.getX(index), area, de) |
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149 - 0.5*box.getWidth(); |
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150 r.y = ra.valueToJava2D(ring.getY(index), area, re) |
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151 + 0.5*box.getHeight(); |
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152 |
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153 for (Rectangle2D b: bboxes) { |
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154 if (b.intersects(r)) { |
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155 return null; |
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156 } |
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157 } |
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158 return r; |
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159 } |
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160 }); |
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161 |
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162 if (r != null) { |
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163 bboxes.add(r); |
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164 graphics.drawString( |
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165 label, (float)r.getX(), (float)r.getY()); |
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166 } |
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167 } // for all items in series |
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168 } // for all series |
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169 } |
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170 |
451
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171 protected Shape constructShape( |
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172 PolygonPlot plot, |
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173 Rectangle2D area, |
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174 PolygonSeries series, |
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175 boolean close |
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176 ) { |
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177 ValueAxis da = plot.getDomainAxis(); |
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178 ValueAxis ra = plot.getRangeAxis(); |
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179 RectangleEdge de = plot.getDomainAxisEdge(); |
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180 RectangleEdge re = plot.getRangeAxisEdge(); |
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181 |
422
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182 CompactXYItems [] rings = series.getRings(); |
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183 GeneralPath path = new GeneralPath(); |
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184 |
422
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185 for (int i = 0; i < rings.length; ++i) { |
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186 |
422
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187 CompactXYItems ring = rings[i]; |
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188 |
422
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189 double [] data = ring.getData(); |
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190 |
422
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191 if (data.length >= 2) { |
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192 path.moveTo( |
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193 (float)da.valueToJava2D(data[0], area, de), |
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194 (float)ra.valueToJava2D(data[1], area, re)); |
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195 } |
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196 for (int j = 2; j < data.length;) { |
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197 path.lineTo( |
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198 (float)da.valueToJava2D(data[j++], area, de), |
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199 (float)ra.valueToJava2D(data[j++], area, re)); |
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200 } |
437
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201 if (close) { |
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202 path.closePath(); |
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203 } |
422
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204 } |
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205 return path; |
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206 } |
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207 |
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208 public Rectangle2D getBoundingBox(PolygonDataset dataset) { |
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209 Rectangle2D bbox = null; |
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210 |
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211 for (int i = 0, N = dataset.getSeriesCount(); i < N; i++) { |
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212 Range domain = dataset.getSeries(i).getDomainBounds(); |
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213 Range range = dataset.getSeries(i).getRangeBounds(); |
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214 |
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215 double x = domain.getLowerBound(); |
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216 double y = range.getLowerBound(); |
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217 double w = Math.abs(domain.getUpperBound() - x); |
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218 double h = Math.abs(range.getUpperBound() - y); |
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219 |
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220 if (bbox == null) { |
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221 bbox = new Rectangle2D.Double(x, y, w, h); |
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222 } |
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223 else { |
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224 bbox.add(new Rectangle2D.Double(x, y, w, h)); |
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225 } |
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226 } |
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227 |
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228 return bbox; |
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229 } |
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230 |
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231 public Rectangle2D getBounds(PolygonSeries series) { |
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232 |
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233 Range domain = series.getDomainBounds(); |
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234 Range range = series.getRangeBounds(); |
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235 |
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236 return new Rectangle2D.Double( |
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237 domain.getLowerBound(), range.getLowerBound(), |
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238 domain.getUpperBound(), range.getUpperBound() |
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239 ); |
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240 } |
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241 } |
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242 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf-8 : |