Mercurial > dive4elements > river
annotate flys-artifacts/src/main/java/de/intevation/flys/exports/InfoGeneratorHelper.java @ 3120:e52a3b62fc20
Fixed broken naming of curves in SQ relation charts.
flys-artifacts/trunk@4721 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author | Ingo Weinzierl <ingo.weinzierl@intevation.de> |
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date | Wed, 20 Jun 2012 11:24:30 +0000 |
parents | f55984858952 |
children | 4ac581062c40 |
rev | line source |
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1 package de.intevation.flys.exports; |
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2 |
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3 import java.awt.geom.AffineTransform; |
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4 import java.awt.geom.NoninvertibleTransformException; |
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5 import java.awt.geom.Rectangle2D; |
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6 |
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7 import java.util.Date; |
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8 |
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9 import org.w3c.dom.Document; |
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10 import org.w3c.dom.Element; |
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11 |
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12 import org.apache.log4j.Logger; |
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13 |
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14 import org.jfree.chart.ChartRenderingInfo; |
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15 import org.jfree.chart.JFreeChart; |
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16 import org.jfree.chart.axis.DateAxis; |
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17 import org.jfree.chart.axis.NumberAxis; |
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The matrix that is used to transform chart image coordinates into chart coordinates supports inverted x-axis now.
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18 import org.jfree.chart.axis.ValueAxis; |
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19 import org.jfree.chart.plot.XYPlot; |
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20 import org.jfree.data.Range; |
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21 import org.jfree.data.xy.XYDataset; |
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22 |
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23 import de.intevation.artifacts.common.ArtifactNamespaceContext; |
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24 import de.intevation.artifacts.common.utils.XMLUtils; |
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25 import de.intevation.artifacts.common.utils.XMLUtils.ElementCreator; |
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26 |
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27 import de.intevation.flys.jfree.Bounds; |
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28 |
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29 |
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30 /** |
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31 * This class helps generating chart info documents. |
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32 * |
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33 * @author <a href="mailto:ingo.weinzierl@intevation.de">Ingo Weinzierl</a> |
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34 */ |
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35 public class InfoGeneratorHelper { |
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36 |
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37 private static final Logger logger = |
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38 Logger.getLogger(InfoGeneratorHelper.class); |
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39 |
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40 |
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Registered an Info generator for historical discharge curves; made some adaptions in XYChartGenerator, ChartGenerator and TimeseriesChartGenerator.
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41 protected ChartGenerator generator; |
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42 |
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43 |
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Registered an Info generator for historical discharge curves; made some adaptions in XYChartGenerator, ChartGenerator and TimeseriesChartGenerator.
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44 public InfoGeneratorHelper(ChartGenerator generator) { |
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45 this.generator = generator; |
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46 } |
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47 |
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48 |
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49 /** |
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50 * Triggers the creation of the chart info document. |
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51 * |
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52 * @param chart The JFreeChart chart. |
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53 * @param info An info object that has been created while chart creation. |
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54 * |
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55 * @return the info document. |
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56 */ |
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57 public Document createInfoDocument( |
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58 JFreeChart chart, |
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59 ChartRenderingInfo info) |
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60 { |
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61 logger.debug("InfoGeneratorHelper.createInfoDocument"); |
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62 |
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63 Document doc = XMLUtils.newDocument(); |
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64 |
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65 ElementCreator cr = new ElementCreator( |
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66 doc, |
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67 ArtifactNamespaceContext.NAMESPACE_URI, |
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68 ArtifactNamespaceContext.NAMESPACE_PREFIX); |
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69 |
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70 Element chartinfo = cr.create("chartinfo"); |
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71 |
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72 chartinfo.appendChild(createAxesElements(cr, chart)); |
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73 chartinfo.appendChild(createTransformationElements(cr, chart, info)); |
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74 |
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75 doc.appendChild(chartinfo); |
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76 |
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77 return doc; |
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78 } |
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79 |
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80 |
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81 /** |
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82 * This method create a axes element that contains all domain and range |
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83 * axes of the given chart. |
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84 * |
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85 * @param cr The ElementCreator. |
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86 * @param chart The chart that provides range information of its axes. |
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87 * |
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88 * @return an element with axes information. |
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89 */ |
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90 protected Element createAxesElements( |
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91 ElementCreator cr, |
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92 JFreeChart chart) |
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93 { |
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94 logger.debug("InfoGeneratorHelper.createRangeElements"); |
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95 |
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96 Element axes = cr.create("axes"); |
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97 |
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98 XYPlot plot = (XYPlot) chart.getPlot(); |
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99 |
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100 int dAxisCount = plot.getDomainAxisCount(); |
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101 for (int i = 0; i < dAxisCount; i++) { |
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102 ValueAxis axis = plot.getDomainAxis(i); |
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103 XYDataset data = plot.getDataset(i); |
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parents:
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104 |
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105 if (axis != null) { |
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106 Element e = createAxisElement(cr, axis, data, "domain", i); |
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107 axes.appendChild(e); |
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108 } |
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109 } |
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110 |
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111 int rAxisCount = plot.getRangeAxisCount(); |
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112 for (int i = 0; i < rAxisCount; i++) { |
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113 ValueAxis axis = plot.getRangeAxis(i); |
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114 XYDataset data = plot.getDataset(i); |
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115 |
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116 if (axis == null || data == null) { |
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117 logger.warn("Axis or dataset is empty at pos: " + i); |
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118 continue; |
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119 } |
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120 |
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121 Element e = createAxisElement(cr, axis, data, "range", i); |
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122 axes.appendChild(e); |
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123 } |
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124 |
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125 return axes; |
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126 } |
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127 |
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128 |
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129 /** |
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130 * This method create a axis element for a given <i>axis</i> and |
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131 * <i>type</i>. Type can be one of 'domain' or 'range'. |
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132 * |
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133 * @param cr The ElementCreator |
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134 * @param axis The axis that provides range information. |
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135 * @param dataset The dataset for min/max determination. |
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136 * @param type The axis type ('domain' or 'range'). |
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137 * @param pos The position in the chart. |
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138 * |
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139 * @return An element that contains range information of a given axis. |
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140 */ |
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141 protected Element createAxisElement( |
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142 ElementCreator cr, |
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143 ValueAxis axis, |
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144 XYDataset dataset, |
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145 String type, |
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146 int pos) |
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147 { |
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148 logger.debug("createAxisElement " + pos); |
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149 logger.debug("Axis is from type: " + axis.getClass()); |
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150 |
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151 Element e = cr.create(type); |
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152 cr.addAttr(e, "pos", String.valueOf(pos), true); |
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153 |
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154 if (axis instanceof DateAxis) { |
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155 prepareDateAxisElement( |
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156 e, cr, (DateAxis) axis, dataset, type, pos); |
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157 } |
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158 else { |
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159 prepareNumberAxisElement( |
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160 e, cr, (NumberAxis) axis, dataset, type, pos); |
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161 } |
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162 |
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163 return e; |
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164 } |
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165 |
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166 |
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167 protected Element prepareNumberAxisElement( |
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168 Element e, |
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169 ElementCreator cr, |
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170 NumberAxis axis, |
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171 XYDataset dataset, |
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172 String type, |
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173 int pos |
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174 ) { |
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175 Range range = axis.getRange(); |
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176 |
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177 cr.addAttr(e, "from", String.valueOf(range.getLowerBound()), true); |
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178 cr.addAttr(e, "to", String.valueOf(range.getUpperBound()), true); |
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179 cr.addAttr(e, "axistype", "number", true); |
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180 |
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181 Range[] rs = generator.getRangesForAxis(pos); |
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182 Range r = null; |
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183 |
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184 if (type.equals("range")) { |
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185 r = rs[1]; |
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186 } |
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187 else { |
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188 r = rs[0]; |
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189 } |
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190 |
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191 cr.addAttr(e, "min", String.valueOf(r.getLowerBound()), true); |
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192 cr.addAttr(e, "max", String.valueOf(r.getUpperBound()), true); |
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193 |
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194 return e; |
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195 } |
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196 |
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197 |
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198 protected Element prepareDateAxisElement( |
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199 Element e, |
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200 ElementCreator cr, |
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201 DateAxis axis, |
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202 XYDataset dataset, |
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203 String type, |
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204 int pos |
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205 ) { |
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206 Date from = axis.getMinimumDate(); |
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207 Date to = axis.getMaximumDate(); |
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208 |
2400
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209 Bounds bounds = null; |
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210 if (type.equals("range")) { |
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211 bounds = generator.getYBounds(pos); |
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212 } |
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213 else { |
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214 bounds = generator.getXBounds(pos); |
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215 } |
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216 |
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217 cr.addAttr(e, "axistype", "date", true); |
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218 cr.addAttr(e, "from", String.valueOf(from.getTime()), true); |
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219 cr.addAttr(e, "to", String.valueOf(to.getTime()), true); |
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220 |
2400
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221 cr.addAttr(e, "min", bounds.getLower().toString(), true); |
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222 cr.addAttr(e, "max", bounds.getUpper().toString(), true); |
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223 |
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224 return e; |
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225 } |
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226 |
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227 |
659
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228 /** |
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229 * This method appends the values of a transformation matrix to transform |
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230 * image pixel coordinates into chart coordinates. |
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231 * |
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232 * @param cr The ElementCreator. |
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233 * @param chart The chart object. |
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234 * @param info The ChartRenderingInfo that is filled while chart creation. |
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235 * |
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236 * @return an element that contains one or more transformation matrix. |
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237 */ |
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238 protected Element createTransformationElements( |
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239 ElementCreator cr, |
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240 JFreeChart chart, |
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241 ChartRenderingInfo info) |
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242 { |
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243 logger.debug("InfoGeneratorHelper.createTransformationElements"); |
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244 |
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245 Element tf = cr.create("transformation-matrix"); |
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246 |
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247 Rectangle2D dataArea = info.getPlotInfo().getDataArea(); |
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248 |
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249 XYPlot plot = (XYPlot) chart.getPlot(); |
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250 ValueAxis xAxis = plot.getDomainAxis(); |
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251 |
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252 if (xAxis == null) { |
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253 logger.error("There is no x axis in the chart!"); |
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254 return null; |
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255 } |
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256 |
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257 for (int i = 0, num = plot.getRangeAxisCount(); i < num; i++) { |
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258 ValueAxis yAxis = plot.getRangeAxis(i); |
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259 |
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260 if (yAxis == null) { |
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261 logger.warn("No y axis at pos " + i + " existing."); |
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262 continue; |
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263 } |
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264 |
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265 Element matrix = createTransformationElement( |
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266 cr, xAxis, yAxis, dataArea, i); |
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267 |
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268 tf.appendChild(matrix); |
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269 } |
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270 |
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271 return tf; |
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272 } |
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273 |
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274 |
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275 /** |
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276 * Creates an element that contains values used to transform coordinates |
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277 * of a coordinate system A into a coordinate system B. |
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278 * |
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279 * @param cr The ElementCreator. |
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280 * @param xAxis The x axis of the target coordinate system. |
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281 * @param yAxis The y axis of the target coordinate system. |
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282 * @param dataArea The pixel coordinates of the chart image. |
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283 * @param pos The dataset position. |
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284 * |
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285 * @return an element that contains transformation matrix values. |
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286 */ |
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287 protected Element createTransformationElement( |
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288 ElementCreator cr, |
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289 ValueAxis xAxis, |
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290 ValueAxis yAxis, |
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291 Rectangle2D dataArea, |
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292 int pos) |
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293 { |
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294 double[] tm = createTransformationMatrix(dataArea, xAxis, yAxis); |
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295 |
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296 Element matrix = cr.create("matrix"); |
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297 |
673
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298 cr.addAttr(matrix, "pos", String.valueOf(pos), true); |
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299 cr.addAttr(matrix, "sx", String.valueOf(tm[0]), true); |
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300 cr.addAttr(matrix, "sy", String.valueOf(tm[1]), true); |
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301 cr.addAttr(matrix, "tx", String.valueOf(tm[2]), true); |
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302 cr.addAttr(matrix, "ty", String.valueOf(tm[3]), true); |
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303 |
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304 if (xAxis instanceof DateAxis) { |
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305 cr.addAttr(matrix, "xtype", "date", true); |
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306 } |
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307 else { |
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308 cr.addAttr(matrix, "xtype", "number", true); |
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309 } |
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310 |
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311 if (yAxis instanceof DateAxis) { |
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312 cr.addAttr(matrix, "ytype", "date", true); |
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313 } |
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314 else { |
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315 cr.addAttr(matrix, "ytype", "number", true); |
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316 } |
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317 |
673
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318 return matrix; |
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319 } |
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320 |
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321 |
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322 /** |
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323 * This method determines a transformation matrix to transform pixel |
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324 * coordinates of the chart image into chart coordinates. |
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325 * |
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326 * @param dataArea The rectangle that contains the data points of the chart. |
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327 * @param xRange The x axis range. |
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328 * @param yRange The y axis range. |
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329 * |
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330 * @return a double array as follows: [sx, sy, tx, ty]. |
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331 */ |
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332 protected static double[] createTransformationMatrix( |
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333 Rectangle2D dataArea, |
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334 ValueAxis xAxis, |
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335 ValueAxis yAxis) |
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336 { |
648
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337 logger.debug("InfoGeneratorHelper.createTransformationMatrix"); |
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338 |
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339 double offsetX = dataArea.getX(); |
657
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340 double width = dataArea.getWidth(); |
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341 double offsetY = dataArea.getY(); |
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342 double height = dataArea.getHeight(); |
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343 |
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344 Range xRange = getRangeFromAxis(xAxis); |
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345 Range yRange = getRangeFromAxis(yAxis); |
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346 |
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347 double lowerX = xRange.getLowerBound(); |
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348 double upperX = xRange.getUpperBound(); |
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349 double lowerY = yRange.getLowerBound(); |
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350 double upperY = yRange.getUpperBound(); |
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351 |
648
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352 if (xAxis.isInverted()) { |
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353 logger.info("X-Axis is inverted!"); |
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354 |
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355 double tmp = upperX; |
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356 upperX = lowerX; |
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357 lowerX = tmp; |
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358 } |
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359 |
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360 double dMoveX = upperX - lowerX; |
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361 double fMoveX = width * lowerX; |
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362 double dMoveY = lowerY - upperY; |
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363 double fMoveY = height * upperY; |
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364 |
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365 AffineTransform t1 = AffineTransform.getTranslateInstance( |
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366 offsetX - ( fMoveX / dMoveX ), |
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367 offsetY - ( fMoveY / dMoveY ) ); |
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368 |
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369 AffineTransform t2 = AffineTransform.getScaleInstance( |
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370 width / (upperX - lowerX), |
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371 height / (lowerY - upperY)); |
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372 |
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373 t1.concatenate(t2); |
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374 |
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375 try { |
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376 t1.invert(); |
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377 |
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378 double[] c = new double[6]; |
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379 t1.getMatrix(c); |
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380 |
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381 return new double[] { c[0], c[3], c[4], c[5] }; |
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382 } |
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383 catch (NoninvertibleTransformException e) { |
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384 // do nothing |
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385 logger.warn("Matrix is not invertible."); |
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386 } |
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387 |
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388 return new double[] { 1d, 1d, 0d, 0d }; |
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389 } |
2273
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390 |
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391 |
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392 protected static Range getRangeFromAxis(ValueAxis axis) { |
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393 if (axis instanceof DateAxis) { |
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394 DateAxis dAxis = (DateAxis) axis; |
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395 Date min = dAxis.getMinimumDate(); |
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396 Date max = dAxis.getMaximumDate(); |
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397 |
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398 return new Range(min.getTime(), max.getTime()); |
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399 } |
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400 else { |
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401 return axis.getRange(); |
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402 } |
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403 } |
647
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404 } |
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405 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 : |