Mercurial > dive4elements > gnv-client

annotate gnv-artifacts/src/main/java/de/intevation/gnv/jfreechart/PolygonRenderer.java @ 781:5dd94448538d

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Added timegap definitions as attribute to each state. gnv-artifacts/trunk@860 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author Ingo Weinzierl <ingo.weinzierl@intevation.de>
date Mon, 29 Mar 2010 10:02:42 +0000
parents c4156275c1e1
children cdade5005cba
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.awt.BasicStroke;
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4 import java.awt.Color;
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5 import java.awt.Font;
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6 import java.awt.FontMetrics;
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7 import java.awt.Graphics2D;
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8 import java.awt.Paint;
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9 import java.awt.Shape;
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10
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11 import java.awt.geom.GeneralPath;
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13 import java.awt.geom.Rectangle2D.Double;
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14
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15 import java.awt.geom.Rectangle2D;
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17 import java.util.ArrayList;
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18
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19 import org.apache.log4j.Logger;
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21 import org.jfree.chart.axis.ValueAxis;
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22
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23 import org.jfree.data.Range;
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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 import org.jfree.ui.RectangleEdge;
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28
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29 /**
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30 * @author <a href="mailto:ingo.weinzierl@intevation.de">Ingo Weinzierl</a>
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31 * @author <a href="mailto:sascha.teichmann@intevation.de">Sascha L. Teichmann</a>
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32 */
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33 public class PolygonRenderer
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34 {
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35 private static Logger log = Logger.getLogger(
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36 PolygonRenderer.class);
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37
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38 public interface PaintLookup {
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39
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40 Paint getPaint(int index);
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41
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42 } // interface PaintLookup
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43
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44 public static class DefaultLabelGenerator
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45 implements PolygonSeriesLabelGenerator
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46 {
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47 public DefaultLabelGenerator() {
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48 }
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49
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50 public String generateLabel(PolygonSeries series) {
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51 Object label = series.getAttribute("label");
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52 return label != null
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53 ? toString(label)
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54 : null;
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55 }
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56
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57 protected String toString(Object label) {
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58 return label.toString();
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59 }
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60 } // class DefaultLabelGenerator
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61
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62 public static final PolygonSeriesLabelGenerator
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63 DEFAULT_LABEL_GENERATOR_INSTANCE = new DefaultLabelGenerator();
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64
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65 protected PaintLookup lookup;
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66 protected PolygonSeriesLabelGenerator labelGenerator;
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67
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68 public PolygonRenderer(PaintLookup lookup) {
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69 this(lookup, null);
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70 }
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71
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72 public PolygonRenderer(
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73 PaintLookup lookup,
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74 PolygonSeriesLabelGenerator labelGenerator
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75 ) {
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76 this.lookup = lookup;
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77 this.labelGenerator = labelGenerator;
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78 }
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79
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80 public void drawPolygons(
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81 Graphics2D graphics,
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82 PolygonPlot plot,
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83 Rectangle2D area,
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84 PolygonDataset dataset
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85 ) {
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86 int seriesCount = dataset.getSeriesCount();
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87 for (int i = 0; i < seriesCount; i++) {
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88 PolygonSeries series = dataset.getSeries(i);
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89 Integer colorIdx = (Integer)series.getAttribute("fill");
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90
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91 if (colorIdx != null) {
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92 Paint paint = lookup.getPaint(colorIdx.intValue());
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93 graphics.setPaint(paint != null ? paint : Color.black);
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94 graphics.fill(constructShape(plot, area, series, true));
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95 }
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96 else {
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97 Number lineWidth = (Number)series.getAttribute("line.width");
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98 BasicStroke stroke = new BasicStroke(
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99 lineWidth != null ? lineWidth.floatValue() : 1f);
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100 graphics.setStroke(stroke);
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101 graphics.setPaint(Color.black);
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102 graphics.draw(constructShape(plot, area, series, false));
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103 }
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104 }
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105 }
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106
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107 public void drawLabels(
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108 final Graphics2D graphics,
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109 final PolygonPlot plot,
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110 final Rectangle2D area,
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111 PolygonDataset dataset
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112 ) {
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113 if (labelGenerator == null) {
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114 return;
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115 }
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116
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117 final ArrayList<Rectangle2D> bboxes = new ArrayList<Rectangle2D>();
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118
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119 Font font = graphics.getFont();
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120 font = font.deriveFont(Font.PLAIN, Math.max(8, font.getSize()-3));
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121 graphics.setFont(font);
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diff changeset
122 FontMetrics metrics = graphics.getFontMetrics(font);
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diff changeset
123
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124 for (int i = dataset.getSeriesCount()-1; i >= 0; --i) {
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125 PolygonSeries series = dataset.getSeries(i);
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126
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127 String label = labelGenerator.generateLabel(series);
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128 if (label == null) {
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129 continue;
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130 }
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131
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132 final Rectangle2D box = TextUtilities.getTextBounds(
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133 label, graphics, metrics);
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134
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135 for (int j = series.getItemCount()-1; j >= 0; --j) {
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136 final CompactXYItems ring = series.getItem(j);
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137 LevelOrderIndices loi = new LevelOrderIndices(ring.size()-1);
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138 Rectangle2D r = (Rectangle2D)loi.visit(
778
9a828e5a2390 Removed trailing whitespace
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139 new LevelOrderIndices.Visitor()
450
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140 {
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141 ValueAxis da = plot.getDomainAxis();
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142 ValueAxis ra = plot.getRangeAxis();
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143 RectangleEdge de = plot.getDomainAxisEdge();
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144 RectangleEdge re = plot.getRangeAxisEdge();
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145 Rectangle2D.Double r = new Rectangle2D.Double(
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146 0d, 0d, box.getWidth(), box.getHeight());
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147
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148 public Object visit(int index) {
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149 r.x = da.valueToJava2D(ring.getX(index), area, de)
450
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150 - 0.5*box.getWidth();
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151 r.y = ra.valueToJava2D(ring.getY(index), area, re)
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152 + 0.5*box.getHeight();
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153
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154 for (Rectangle2D b: bboxes) {
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diff changeset
155 if (b.intersects(r)) {
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diff changeset
156 return null;
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157 }
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158 }
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159 return r;
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160 }
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diff changeset
161 });
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diff changeset
162
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diff changeset
163 if (r != null) {
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164 bboxes.add(r);
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165 graphics.drawString(
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diff changeset
166 label, (float)r.getX(), (float)r.getY());
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167 }
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168 } // for all items in series
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169 } // for all series
422
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170 }
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171
451
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172 protected Shape constructShape(
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173 PolygonPlot plot,
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diff changeset
174 Rectangle2D area,
778
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diff changeset
175 PolygonSeries series,
451
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176 boolean close
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diff changeset
177 ) {
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diff changeset
178 ValueAxis da = plot.getDomainAxis();
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179 ValueAxis ra = plot.getRangeAxis();
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180 RectangleEdge de = plot.getDomainAxisEdge();
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181 RectangleEdge re = plot.getRangeAxisEdge();
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diff changeset
182
422
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183 CompactXYItems [] rings = series.getRings();
451
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diff changeset
184 GeneralPath path = new GeneralPath();
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185
422
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186 for (int i = 0; i < rings.length; ++i) {
451
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diff changeset
187
422
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diff changeset
188 CompactXYItems ring = rings[i];
451
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189
422
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190 double [] data = ring.getData();
451
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191
422
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parents:
diff changeset
192 if (data.length >= 2) {
451
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diff changeset
193 path.moveTo(
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diff changeset
194 (float)da.valueToJava2D(data[0], area, de),
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diff changeset
195 (float)ra.valueToJava2D(data[1], area, re));
422
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parents:
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196 }
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parents:
diff changeset
197 for (int j = 2; j < data.length;) {
451
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diff changeset
198 path.lineTo(
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diff changeset
199 (float)da.valueToJava2D(data[j++], area, de),
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diff changeset
200 (float)ra.valueToJava2D(data[j++], area, re));
422
f426f55d4f7a Added Ingo Weinzierl's special JFreeChart classes.
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parents:
diff changeset
201 }
437
b624879d2902 Added vectorizer rings callback to generate iso lines.
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parents: 422
diff changeset
202 if (close) {
b624879d2902 Added vectorizer rings callback to generate iso lines.
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parents: 422
diff changeset
203 path.closePath();
b624879d2902 Added vectorizer rings callback to generate iso lines.
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parents: 422
diff changeset
204 }
422
f426f55d4f7a Added Ingo Weinzierl's special JFreeChart classes.
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parents:
diff changeset
205 }
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parents:
diff changeset
206 return path;
f426f55d4f7a Added Ingo Weinzierl's special JFreeChart classes.
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parents:
diff changeset
207 }
f426f55d4f7a Added Ingo Weinzierl's special JFreeChart classes.
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parents:
diff changeset
208
f426f55d4f7a Added Ingo Weinzierl's special JFreeChart classes.
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parents:
diff changeset
209 public Rectangle2D getBoundingBox(PolygonDataset dataset) {
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parents:
diff changeset
210 Rectangle2D bbox = null;
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parents:
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211
f426f55d4f7a Added Ingo Weinzierl's special JFreeChart classes.
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parents:
diff changeset
212 for (int i = 0, N = dataset.getSeriesCount(); i < N; i++) {
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parents:
diff changeset
213 Range domain = dataset.getSeries(i).getDomainBounds();
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parents:
diff changeset
214 Range range = dataset.getSeries(i).getRangeBounds();
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parents:
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215
f426f55d4f7a Added Ingo Weinzierl's special JFreeChart classes.
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parents:
diff changeset
216 double x = domain.getLowerBound();
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parents:
diff changeset
217 double y = range.getLowerBound();
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parents:
diff changeset
218 double w = Math.abs(domain.getUpperBound() - x);
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parents:
diff changeset
219 double h = Math.abs(range.getUpperBound() - y);
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parents:
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220
f426f55d4f7a Added Ingo Weinzierl's special JFreeChart classes.
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parents:
diff changeset
221 if (bbox == null) {
f426f55d4f7a Added Ingo Weinzierl's special JFreeChart classes.
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parents:
diff changeset
222 bbox = new Rectangle2D.Double(x, y, w, h);
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parents:
diff changeset
223 }
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parents:
diff changeset
224 else {
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parents:
diff changeset
225 bbox.add(new Rectangle2D.Double(x, y, w, h));
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parents:
diff changeset
226 }
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parents:
diff changeset
227 }
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parents:
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228
f426f55d4f7a Added Ingo Weinzierl's special JFreeChart classes.
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parents:
diff changeset
229 return bbox;
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parents:
diff changeset
230 }
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parents:
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231
f426f55d4f7a Added Ingo Weinzierl's special JFreeChart classes.
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parents:
diff changeset
232 public Rectangle2D getBounds(PolygonSeries series) {
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parents:
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233
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parents:
diff changeset
234 Range domain = series.getDomainBounds();
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diff changeset
235 Range range = series.getRangeBounds();
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parents:
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236
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diff changeset
237 return new Rectangle2D.Double(
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parents:
diff changeset
238 domain.getLowerBound(), range.getLowerBound(),
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parents:
diff changeset
239 domain.getUpperBound(), range.getUpperBound()
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parents:
diff changeset
240 );
f426f55d4f7a Added Ingo Weinzierl's special JFreeChart classes.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
241 }
f426f55d4f7a Added Ingo Weinzierl's special JFreeChart classes.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
242 }
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parents:
diff changeset
243 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf-8 :
http://dive4elements.wald.intevation.org