root / org.gvsig.legend.heatmap / trunk / org.gvsig.legend.heatmap / org.gvsig.legend.heatmap.lib / org.gvsig.legend.heatmap.lib.impl / src / main / java / org / gvsig / legend / heatmap / lib / impl / DefaultHeatmapLegend.java @ 2267
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package org.gvsig.legend.heatmap.lib.impl; |
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|
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import java.awt.Color; |
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import java.awt.Graphics2D; |
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import java.awt.Image; |
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import java.awt.image.BufferedImage; |
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import java.util.Map; |
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|
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import org.apache.commons.lang3.StringUtils; |
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import org.cresques.cts.ICoordTrans; |
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import org.gvsig.compat.print.PrintAttributes; |
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|
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import org.gvsig.fmap.dal.exception.DataException; |
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import org.gvsig.fmap.dal.feature.Feature; |
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import org.gvsig.fmap.dal.feature.FeatureQuery; |
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import org.gvsig.fmap.dal.feature.FeatureSelection; |
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import org.gvsig.fmap.dal.feature.FeatureSet; |
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import org.gvsig.fmap.dal.feature.FeatureStore; |
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import org.gvsig.fmap.dal.feature.FeatureType; |
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import org.gvsig.fmap.geom.Geometry; |
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import org.gvsig.fmap.geom.primitive.Point; |
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import org.gvsig.fmap.mapcontext.MapContextException; |
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import org.gvsig.fmap.mapcontext.ViewPort; |
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import org.gvsig.fmap.mapcontext.layers.operations.IHasImageLegend; |
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import org.gvsig.fmap.mapcontext.rendering.legend.LegendException; |
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import org.gvsig.fmap.mapcontext.rendering.legend.events.SymbolLegendEvent; |
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import org.gvsig.fmap.mapcontext.rendering.symbols.ISymbol; |
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import org.gvsig.gui.ColorTablePainter; |
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import org.gvsig.gui.DefaultColorTablePainter; |
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import org.gvsig.legend.heatmap.lib.api.HeatmapLegend; |
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import org.gvsig.symbology.fmap.mapcontext.rendering.legend.impl.AbstractVectorialLegend; |
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import org.gvsig.symbology.fmap.mapcontext.rendering.legend.impl.DefaultFeatureDrawnNotification; |
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import org.gvsig.symbology.fmap.mapcontext.rendering.symbol.text.impl.SimpleTextSymbol; |
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import org.gvsig.tools.exception.BaseException; |
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import org.gvsig.tools.persistence.PersistentState; |
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import org.gvsig.tools.persistence.exception.PersistenceException; |
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import org.gvsig.tools.swing.api.ToolsSwingLocator; |
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import org.gvsig.tools.swing.api.ToolsSwingManager; |
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import org.gvsig.tools.task.Cancellable; |
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import org.gvsig.tools.visitor.VisitCanceledException; |
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import org.gvsig.tools.visitor.Visitor; |
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|
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public class DefaultHeatmapLegend extends AbstractVectorialLegend implements HeatmapLegend, IHasImageLegend { |
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|
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private class DensityAlgorithm { |
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|
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private double[][] grid; |
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private double[][] kernel; |
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private int distance; |
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private int height; |
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private int with; |
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private double maxValue; |
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private double minValue; |
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|
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public DensityAlgorithm(int distance) { |
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this.setDistance(distance);
|
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} |
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|
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public void setDistance(int distance) { |
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if( this.distance == distance ) { |
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return;
|
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} |
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this.distance = distance;
|
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this.kernel = new double[2 * this.distance + 1][2 * this.distance + 1]; |
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for( int y = -this.distance; y < this.distance + 1; y++ ) { |
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for( int x = -this.distance; x < this.distance + 1; x++ ) { |
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final double dDist = Math.sqrt(x * x + y * y); |
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if( dDist < this.distance ) { |
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this.kernel[x + this.distance][y + this.distance] = Math.pow(1 - (dDist * dDist) / (this.distance * this.distance), 2); |
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} else {
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this.kernel[x + this.distance][y + this.distance] = 0; |
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} |
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} |
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} |
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} |
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|
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public int getDistance() { |
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return this.distance; |
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} |
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|
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public void init(int with, int height) { |
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this.with = with;
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this.height = height;
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this.grid = new double[with][height]; |
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this.maxValue = 0; |
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this.minValue = 0; |
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} |
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|
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public void add(int px, int py) { |
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add(px, py, 1);
|
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} |
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|
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public void add(int px, int py, double value) { |
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for( int y = -this.distance; y < this.distance + 1; y++ ) { |
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for( int x = -this.distance; x < this.distance + 1; x++ ) { |
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if( this.kernel[x + this.distance][y + this.distance] != 0 ) { |
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addValue(px + x, py + y, value * this.kernel[x + this.distance][y + this.distance]); |
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} |
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} |
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} |
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} |
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|
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private void addValue(int px, int py, double value) { |
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if( px < 0 || py < 0 || px >= with || py >= height ) { |
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return;
|
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} |
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value += this.grid[px][py];
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this.grid[px][py] = value;
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if( value > this.maxValue ) { |
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this.maxValue = value;
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} |
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if( value < this.minValue ) { |
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this.minValue = value;
|
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} |
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} |
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|
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public void drawWithOpaqueColors(BufferedImage img, Graphics2D g, Color[] colorTable, Cancellable cancel) { |
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try {
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ToolsSwingManager toolsSwingManager = ToolsSwingLocator.getToolsSwingManager(); |
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Color c;
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int maxIndexColor = colorTable.length-1; |
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for( int x = 0; x < with; x++ ) { |
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for( int y = 0; y < height; y++ ) { |
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if( cancel.isCanceled() ) {
|
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return;
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} |
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double value = this.grid[x][y]; |
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if( value > 0 ) { |
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int icolor = (int) (value * maxIndexColor / maxValue); |
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c = toolsSwingManager.alphaBlendingWithOpaqueBackground( |
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new Color(img.getRGB(x, y)), |
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colorTable[icolor] |
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); |
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img.setRGB(x, y, c.getRGB()); |
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} |
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} |
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} |
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} catch (Exception ex) { |
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LOG.warn("Problems drawing heatmap", ex);
|
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} |
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} |
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|
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public void drawWithAlphaColors(BufferedImage img, Graphics2D g, Color[] colorTable, Cancellable cancel) { |
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try {
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Color c;
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int maxIndexColor = colorTable.length-1; |
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for( int x = 0; x < with; x++ ) { |
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for( int y = 0; y < height; y++ ) { |
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if( cancel.isCanceled() ) {
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return;
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} |
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double value = this.grid[x][y]; |
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if( value > 0 ) { |
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int icolor = (int) (value * maxIndexColor / maxValue); |
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c = colorTable[icolor]; |
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img.setRGB(x, y, c.getRGB()); |
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} |
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} |
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} |
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} catch (Exception ex) { |
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LOG.warn("Problems drawing heatmap", ex);
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} |
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} |
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} |
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|
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private ISymbol defaultSymbol;
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private DensityAlgorithm algorithm;
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private boolean isRamp; |
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private Color[] sourceColorTable; |
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private int colorTableHotColorAlpha; |
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private int colorTableColdColorAlpha; |
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private boolean useAlphaInColorTable; |
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private String fieldName; |
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private Image imageLegend; |
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private HeatmapColorTable hmColorTable;
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private Color rampColdColor; |
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private Color rampHotColor; |
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private int rampNumColors; |
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|
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public DefaultHeatmapLegend() {
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this.defaultSymbol = new SimpleTextSymbol(); |
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this.algorithm = new DensityAlgorithm(30); |
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this.colorTableHotColorAlpha = 255; |
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this.colorTableColdColorAlpha = 0; |
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this.useAlphaInColorTable = false; |
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this.setColorTable(100, new Color(0, 0, 255, 0), new Color(255, 0, 0, 255)); |
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this.imageLegend = null; |
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this.hmColorTable = null; |
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this.fieldName = null; |
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} |
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|
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@Override
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protected String[] getRequiredFeatureAttributeNames(FeatureStore featureStore) throws DataException { |
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FeatureType ftype = featureStore.getDefaultFeatureType(); |
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if( StringUtils.isEmpty(this.fieldName) ) { |
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return new String[]{ |
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ftype.getDefaultGeometryAttributeName() |
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}; |
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} |
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return new String[]{ |
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ftype.getDefaultGeometryAttributeName(), |
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this.fieldName
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}; |
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} |
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|
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@Override
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public ISymbol getDefaultSymbol() {
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return this.defaultSymbol; |
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} |
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|
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@Override
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public void setDefaultSymbol(ISymbol is) { |
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} |
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|
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@Override
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public ISymbol getSymbolByFeature(Feature ftr) throws MapContextException { |
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return this.defaultSymbol; |
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} |
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|
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@Override
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public int getShapeType() { |
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return Geometry.TYPES.GEOMETRY;
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} |
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|
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@Override
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public void setShapeType(int i) { |
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} |
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|
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@Override
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public boolean isUseDefaultSymbol() { |
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return true; |
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} |
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|
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@Override
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public void useDefaultSymbol(boolean bln) { |
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} |
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|
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@Override
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public boolean isSuitableForShapeType(int shapeType) { |
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return true; |
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} |
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|
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@Override
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protected void draw(BufferedImage image, Graphics2D g, ViewPort viewPort, Cancellable cancel, double scale, Map queryParameters, ICoordTrans coordTrans, FeatureStore featureStore, FeatureQuery featureQuery, double dpi) throws LegendException { |
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int saved_distance = this.algorithm.getDistance(); |
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try {
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int distance = (int) (this.algorithm.getDistance() * (dpi / 72)); |
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this.algorithm.setDistance(distance);
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this.algorithm.init(image.getWidth(), image.getHeight());
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super.draw(image, g, viewPort, cancel, scale, queryParameters, coordTrans, featureStore, featureQuery, dpi);
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if( !cancel.isCanceled() ) {
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this.algorithm.drawWithOpaqueColors(image, g, this.getHeatMapColorTable().getColorTable(), cancel); |
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} |
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} finally {
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this.algorithm.setDistance(saved_distance);
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|
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} |
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} |
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|
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@Override
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public void print(Graphics2D g, ViewPort viewPort, Cancellable cancel, |
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double scale, Map queryParameters, ICoordTrans coordTrans, |
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FeatureStore featureStore, FeatureQuery featureQuery, PrintAttributes properties) |
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throws LegendException {
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int saved_distance = this.algorithm.getDistance(); |
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try {
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double dpi = viewPort.getDPI();
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// Ver CartographicSupportToolkit.getCartographicLength
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int distance = (int) (this.algorithm.getDistance() * (dpi / 72)); |
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this.algorithm.setDistance(distance);
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this.algorithm.init(viewPort.getImageWidth(), viewPort.getImageHeight());
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BufferedImage image = new BufferedImage(viewPort.getImageWidth(), viewPort.getImageHeight(), BufferedImage.TYPE_INT_ARGB); |
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super.draw(image, g, viewPort, cancel, scale, queryParameters, coordTrans, featureStore, featureQuery, dpi);
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if (!cancel.isCanceled()) {
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this.algorithm.drawWithAlphaColors(image, g, this.getHeatMapColorTable().getColorTable(), cancel); |
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g.drawImage(image, 0, 0, null); |
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} |
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} finally {
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this.algorithm.setDistance(saved_distance);
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|
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} |
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} |
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|
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@Override
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protected void drawFeatures( |
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BufferedImage image,
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Graphics2D g,
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final ViewPort viewPort,
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final Cancellable cancel,
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final ICoordTrans coordTrans,
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double dpi,
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DefaultFeatureDrawnNotification drawnNotification, |
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FeatureSet featureSet, |
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FeatureSelection selection |
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) throws BaseException {
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int x = -1; |
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if( !StringUtils.isEmpty(this.fieldName) ) { |
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x = featureSet.getDefaultFeatureType().getIndex(this.fieldName);
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} |
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final int n = x; |
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featureSet.accept(new Visitor() {
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@Override
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public void visit(Object o) throws VisitCanceledException, BaseException { |
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if( cancel.isCanceled() ) {
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throw new VisitCanceledException(); |
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} |
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Feature feature = (Feature) o; |
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Geometry geom = feature.getDefaultGeometry(); |
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if( geom != null ) { |
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Point pointGeo = geom.centroid();
|
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if( coordTrans != null ) { |
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pointGeo.reProject(coordTrans); |
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} |
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Point pointPixels = (Point) pointGeo.cloneGeometry(); |
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pointPixels.transform(viewPort.getAffineTransform()); |
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if( n >= 0 ) { |
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double value = 0; |
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try {
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value = feature.getDouble(n); |
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} catch(Exception ex) { |
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} |
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if( value >0 ) { |
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algorithm.add((int) pointPixels.getX(), (int) pointPixels.getY(), value); |
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} |
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} else {
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algorithm.add((int) pointPixels.getX(), (int) pointPixels.getY()); |
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} |
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} |
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} |
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}); |
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} |
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|
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/**
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* @return the distance
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*/
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@Override
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public int getDistance() { |
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return this.algorithm.getDistance(); |
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} |
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|
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/**
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* @param distance the distance to set
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*/
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@Override
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public void setDistance(int distance) { |
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this.algorithm.setDistance(distance);
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} |
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@Override
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public void setColorTable(Color[] colorTable) { |
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this.isRamp = false; |
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this.sourceColorTable = colorTable;
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this.imageLegend = null; |
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this.hmColorTable = null; |
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this.fireDefaultSymbolChangedEvent(new SymbolLegendEvent(null,null)); |
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} |
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|
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@Override
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public void setColorTable(int numColors, Color coldColor, Color hotColor) { |
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this.isRamp = true; |
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this.rampColdColor = coldColor;
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this.rampHotColor = hotColor;
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this.rampNumColors = numColors;
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this.imageLegend = null; |
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this.hmColorTable = null; |
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this.fireDefaultSymbolChangedEvent(new SymbolLegendEvent(null,null)); |
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} |
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|
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@Override
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public Color[] getSourceColorTable() { |
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return this.sourceColorTable; |
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} |
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|
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@Override
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public Color[] getTargetColorTable() { |
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return this.getHeatMapColorTable().getColorTable(); |
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} |
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|
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private HeatmapColorTable getHeatMapColorTable() {
|
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if (this.hmColorTable == null) { |
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if (this.useRamp()) { |
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this.hmColorTable = new HeatmapColorTable(this.rampColdColor, this.rampHotColor, this.rampNumColors); |
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} else {
|
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if(useAlphaInColorTable) {
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this.hmColorTable = new HeatmapColorTable(this.getSourceColorTable(), colorTableColdColorAlpha, colorTableHotColorAlpha); |
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} else {
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this.hmColorTable =
|
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this.hmColorTable = new HeatmapColorTable(this.getSourceColorTable()); |
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} |
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} |
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} |
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return this.hmColorTable; |
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} |
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|
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|
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@Override
|
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public boolean useRamp() { |
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return this.isRamp; |
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} |
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|
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@Override
|
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public String getFieldName() { |
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return this.fieldName; |
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} |
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|
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@Override
|
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public void setFieldName(String fieldName) { |
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this.fieldName = fieldName;
|
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} |
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|
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@Override
|
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public int getColorTableHotColorAlpha() { |
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return colorTableHotColorAlpha;
|
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} |
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|
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@Override
|
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public void setColorTableHotColorAlpha(int colorTableHotColorAlpha) { |
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this.colorTableHotColorAlpha = colorTableHotColorAlpha;
|
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this.imageLegend = null; |
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this.hmColorTable = null; |
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} |
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|
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@Override
|
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public int getColorTableColdColorAlpha() { |
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return colorTableColdColorAlpha;
|
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} |
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|
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@Override
|
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public void setColorTableColdColorAlpha(int colorTableColdColorAlpha) { |
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this.colorTableColdColorAlpha = colorTableColdColorAlpha;
|
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this.imageLegend = null; |
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this.hmColorTable = null; |
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} |
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|
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@Override
|
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public boolean useAlphaInColorTable() { |
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return this.useAlphaInColorTable; |
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} |
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|
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@Override
|
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public boolean setUseAlphaInColorTable(boolean use) { |
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boolean x = this.useAlphaInColorTable; |
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this.useAlphaInColorTable = use;
|
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this.hmColorTable = null; |
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|
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return x;
|
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} |
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|
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@Override
|
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public Image getImageLegend() { |
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if( this.imageLegend==null ) { |
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BufferedImage img = new BufferedImage(80, 20, BufferedImage.TYPE_INT_RGB); |
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ColorTablePainter painter = new DefaultColorTablePainter(this.getTargetColorTable(),""); |
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Graphics2D g = img.createGraphics();
|
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g.setClip(0, 0, 80, 20); |
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g.setBackground(Color.WHITE);
|
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g.fillRect(0, 0, 80, 20); |
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painter.paint(g, false);
|
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this.imageLegend = img;
|
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} |
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return this.imageLegend; |
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} |
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|
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@Override
|
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public String getPathImage() { |
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return null; |
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} |
469 |
|
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@Override
|
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public void loadFromState(PersistentState state) throws PersistenceException { |
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this.defaultSymbol = new SimpleTextSymbol(); |
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this.imageLegend = null; |
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this.hmColorTable = null; |
475 |
|
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super.loadFromState(state);
|
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this.isRamp = state.getBoolean("isRamp"); |
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this.sourceColorTable = (Color[]) state.getArray("sourceColorTable",Color.class); |
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this.colorTableHotColorAlpha = state.getInt("colorTableHotColorAlpha"); |
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this.colorTableColdColorAlpha = state.getInt("colorTableColdColorAlpha"); |
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this.useAlphaInColorTable = state.getBoolean("useAlphaInColorTable"); |
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this.fieldName = state.getString("fieldName"); |
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this.rampNumColors = state.getInt("rampNumColors"); |
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this.rampColdColor = (Color)state.get("rampColdColor"); |
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this.rampHotColor = (Color)state.get("rampHotColor"); |
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|
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this.algorithm = new DensityAlgorithm(state.getInt("distance")); |
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} |
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|
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@Override
|
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public int getRampNumColors() { |
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return this.rampNumColors; |
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} |
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|
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@Override
|
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public Color getRampColdColor() { |
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return this.rampColdColor; |
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} |
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|
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@Override
|
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public Color getRampHotColor() { |
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return this.rampHotColor; |
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} |
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|
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@Override
|
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public void saveToState(PersistentState state) throws PersistenceException { |
507 |
super.saveToState(state);
|
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state.set("isRamp", isRamp);
|
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state.set("sourceColorTable", sourceColorTable);
|
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state.set("colorTableHotColorAlpha", colorTableHotColorAlpha);
|
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state.set("colorTableColdColorAlpha", colorTableColdColorAlpha);
|
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state.set("useAlphaInColorTable", useAlphaInColorTable);
|
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state.set("fieldName", fieldName);
|
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state.set("distance", algorithm.distance);
|
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|
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state.set("rampNumColors", rampNumColors);
|
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state.set("rampColdColor", rampColdColor);
|
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state.set("rampHotColor", rampHotColor);
|
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} |
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|
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|
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private static class HeatmapColorTable { |
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|
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private Color[] sourceColorTable = null; |
525 |
private int coldAlpha = -1; |
526 |
private int hotAlpha = -1; |
527 |
private Color coldColor = null; |
528 |
private Color hotColor = null; |
529 |
private Color[] targetColorTable = null; |
530 |
private int length = -1; |
531 |
|
532 |
public HeatmapColorTable(Color[] sourceColorTable){ |
533 |
this.sourceColorTable = sourceColorTable;
|
534 |
} |
535 |
|
536 |
public HeatmapColorTable(Color[] sourceColorTable, int coldAlpha, int hotAlpha){ |
537 |
this.sourceColorTable = sourceColorTable;
|
538 |
this.coldAlpha = coldAlpha;
|
539 |
this.hotAlpha = hotAlpha;
|
540 |
} |
541 |
|
542 |
public HeatmapColorTable(Color coldColor, Color hotColor, int length){ |
543 |
this.coldColor = coldColor;
|
544 |
this.hotColor = hotColor;
|
545 |
this.length = length;
|
546 |
} |
547 |
|
548 |
public Color[] getColorTable(){ |
549 |
if(targetColorTable==null){ |
550 |
if(sourceColorTable!=null){ //Tenemos tabla de color |
551 |
if (coldAlpha >= 0 || hotAlpha >= 0) { //Se usa alpha para la tabla de color |
552 |
double alphaDelta = getDelta(coldAlpha, hotAlpha, sourceColorTable.length);
|
553 |
targetColorTable = new Color[sourceColorTable.length]; |
554 |
for (int i = 0; i < sourceColorTable.length; i++) { |
555 |
Color sourceColor = sourceColorTable[i];
|
556 |
if (coldAlpha >= 0 && hotAlpha >= 0) { |
557 |
targetColorTable[i] = |
558 |
new Color(sourceColor.getRed(), sourceColor.getGreen(), sourceColor.getBlue(), |
559 |
coldAlpha + (int) (i * alphaDelta));
|
560 |
} else {
|
561 |
targetColorTable[i] = sourceColor; |
562 |
} |
563 |
} |
564 |
} else { //No se usa alpha para la tabla de color |
565 |
targetColorTable = sourceColorTable; |
566 |
} |
567 |
} else { // Tenemos gradiente |
568 |
targetColorTable = new Color[length]; |
569 |
|
570 |
double deltaRed = (hotColor.getRed() - coldColor.getRed()) / length;
|
571 |
double deltaGreen = (hotColor.getGreen() - coldColor.getGreen()) / length;
|
572 |
double deltaBlue = (hotColor.getBlue() - coldColor.getBlue()) / length;
|
573 |
double deltaAlpha = (hotColor.getAlpha() - coldColor.getAlpha()) / length;
|
574 |
for (int i = 0; i < length; i++) { |
575 |
targetColorTable[i] = |
576 |
new Color( |
577 |
(int) (coldColor.getRed() + i * deltaRed),
|
578 |
(int) (coldColor.getGreen() + i * deltaGreen),
|
579 |
(int) (coldColor.getBlue() + i * deltaBlue),
|
580 |
(int) (coldColor.getAlpha() + i * deltaAlpha));
|
581 |
} |
582 |
} |
583 |
} |
584 |
return targetColorTable;
|
585 |
} |
586 |
|
587 |
private double getDelta(int x1, int x2, int lenght){ |
588 |
return (x2-x1)/((double)lenght-1); |
589 |
} |
590 |
} |
591 |
} |