Mercurial > dive4elements > gnv-client

annotate gnv-artifacts/src/main/java/de/intevation/gnv/jfreechart/PolygonRenderer.java @ 605:e8ebdbc7f1e3

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First step of removing the cache blob. The static part of the describe document will be created by using the input data stored at each state. Some TODOs left (see ChangeLog). gnv-artifacts/trunk@671 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author Ingo Weinzierl <ingo.weinzierl@intevation.de>
date Tue, 09 Feb 2010 14:27:55 +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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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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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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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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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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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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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
422
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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();
451
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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) {
451
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186
422
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187 CompactXYItems ring = rings[i];
451
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188
422
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189 double [] data = ring.getData();
451
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190
422
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191 if (data.length >= 2) {
451
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diff changeset
192 path.moveTo(
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diff changeset
193 (float)da.valueToJava2D(data[0], area, de),
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194 (float)ra.valueToJava2D(data[1], area, re));
422
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195 }
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diff changeset
196 for (int j = 2; j < data.length;) {
451
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diff changeset
197 path.lineTo(
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diff changeset
198 (float)da.valueToJava2D(data[j++], area, de),
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diff changeset
199 (float)ra.valueToJava2D(data[j++], area, re));
422
f426f55d4f7a Added Ingo Weinzierl's special JFreeChart classes.
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200 }
437
b624879d2902 Added vectorizer rings callback to generate iso lines.
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parents: 422
diff changeset
201 if (close) {
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diff changeset
202 path.closePath();
b624879d2902 Added vectorizer rings callback to generate iso lines.
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parents: 422
diff changeset
203 }
422
f426f55d4f7a Added Ingo Weinzierl's special JFreeChart classes.
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204 }
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diff changeset
205 return path;
f426f55d4f7a Added Ingo Weinzierl's special JFreeChart classes.
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parents:
diff changeset
206 }
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parents:
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207
f426f55d4f7a Added Ingo Weinzierl's special JFreeChart classes.
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diff changeset
208 public Rectangle2D getBoundingBox(PolygonDataset dataset) {
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diff changeset
209 Rectangle2D bbox = null;
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210
f426f55d4f7a Added Ingo Weinzierl's special JFreeChart classes.
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parents:
diff changeset
211 for (int i = 0, N = dataset.getSeriesCount(); i < N; i++) {
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diff changeset
212 Range domain = dataset.getSeries(i).getDomainBounds();
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diff changeset
213 Range range = dataset.getSeries(i).getRangeBounds();
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214
f426f55d4f7a Added Ingo Weinzierl's special JFreeChart classes.
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diff changeset
215 double x = domain.getLowerBound();
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diff changeset
216 double y = range.getLowerBound();
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diff changeset
217 double w = Math.abs(domain.getUpperBound() - x);
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parents:
diff changeset
218 double h = Math.abs(range.getUpperBound() - y);
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219
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parents:
diff changeset
220 if (bbox == null) {
f426f55d4f7a Added Ingo Weinzierl's special JFreeChart classes.
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diff changeset
221 bbox = new Rectangle2D.Double(x, y, w, h);
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diff changeset
222 }
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parents:
diff changeset
223 else {
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parents:
diff changeset
224 bbox.add(new Rectangle2D.Double(x, y, w, h));
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parents:
diff changeset
225 }
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parents:
diff changeset
226 }
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parents:
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227
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diff changeset
228 return bbox;
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parents:
diff changeset
229 }
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parents:
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230
f426f55d4f7a Added Ingo Weinzierl's special JFreeChart classes.
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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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diff changeset
234 Range range = series.getRangeBounds();
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235
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diff changeset
236 return new Rectangle2D.Double(
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237 domain.getLowerBound(), range.getLowerBound(),
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parents:
diff changeset
238 domain.getUpperBound(), range.getUpperBound()
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parents:
diff changeset
239 );
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parents:
diff changeset
240 }
f426f55d4f7a Added Ingo Weinzierl's special JFreeChart classes.
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parents:
diff changeset
241 }
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parents:
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242 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf-8 :
http://dive4elements.wald.intevation.org