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annotate artifacts/src/main/java/org/dive4elements/river/artifacts/sinfo/flowdepth/FlowDepthChartExtender.java @ 8937:8596f95673b1

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Tkh theme should only be pressed to bottom if other themes are present
author gernotbelger
date Tue, 06 Mar 2018 17:08:51 +0100
parents ffebc94cf679
children 6b2496d71936
rev   line source
8893
ffebc94cf679 Flow-depth-axis and tkh-axis are now synchronized at 0. Show baseline for charts with tkhAxis
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1 /** Copyright (C) 2017 by Bundesanstalt für Gewässerkunde
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2 * Software engineering by
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3 * Björnsen Beratende Ingenieure GmbH
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4 * Dr. Schumacher Ingenieurbüro für Wasser und Umwelt
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5 *
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6 * This file is Free Software under the GNU AGPL (>=v3)
ffebc94cf679 Flow-depth-axis and tkh-axis are now synchronized at 0. Show baseline for charts with tkhAxis
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7 * and comes with ABSOLUTELY NO WARRANTY! Check out the
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8 * documentation coming with Dive4Elements River for details.
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9 */
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10 package org.dive4elements.river.artifacts.sinfo.flowdepth;
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11
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12 import java.awt.BasicStroke;
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13 import java.awt.Stroke;
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14
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15 import org.dive4elements.river.exports.ChartExtender;
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16 import org.dive4elements.river.exports.DiagramGenerator;
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17 import org.jfree.chart.axis.ValueAxis;
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18 import org.jfree.chart.plot.XYPlot;
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19
ffebc94cf679 Flow-depth-axis and tkh-axis are now synchronized at 0. Show baseline for charts with tkhAxis
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20 /**
ffebc94cf679 Flow-depth-axis and tkh-axis are now synchronized at 0. Show baseline for charts with tkhAxis
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21 * @author Gernot Belger
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22 */
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23 public class FlowDepthChartExtender implements ChartExtender {
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8596f95673b1 Tkh theme should only be pressed to bottom if other themes are present
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24
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25 private static final String TKH_AXIS = "tkhAxis";
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26
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27 private static final String FLOWDEPTH_AXIS = "flowdepthAxis";
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28
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29 @Override
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30 public void beforeAutoZoom(final DiagramGenerator generator) {
8596f95673b1 Tkh theme should only be pressed to bottom if other themes are present
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31 final ValueAxis tkhAxis = generator.getAxis(TKH_AXIS);
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32 if (tkhAxis != null) {
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33 /* If tkh is not the only dataset, we push it to the bottom */
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34 final int numYAxes = generator.getNumYAxes();
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35 if (numYAxes > 1)
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36 tkhAxis.setUpperMargin(4.0);
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37 }
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38 }
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39
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40 /**
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41 * Synchronizes the location of '0' on the flow-depth-axis with the tkh-axis, by extending the lower bound of the
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42 * flow-depth-axis.
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43 */
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44 @Override
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45 public void afterAutoZoom(final DiagramGenerator generator) {
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46 final ValueAxis axis1 = generator.getAxis(FLOWDEPTH_AXIS);
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47 final ValueAxis axis2 = generator.getAxis(TKH_AXIS);
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48 if (axis1 == null || axis2 == null)
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49 return;
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50
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51 final double axis2lb = axis2.getLowerBound();
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52 final double axis1ub = axis1.getUpperBound();
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53 final double axis2ub = axis2.getUpperBound();
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54
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55 final double ratio = axis2lb / (axis2ub - axis2lb);
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56 final double axis1lbNew = axis1ub / (1 / ratio + 1);
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57
ffebc94cf679 Flow-depth-axis and tkh-axis are now synchronized at 0. Show baseline for charts with tkhAxis
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58 axis1.setLowerBound(axis1lbNew);
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59 }
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60
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61 @Override
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62 public void afterGenerateChart(final DiagramGenerator generator, final XYPlot plot) {
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63 final ValueAxis tkhAxis = generator.getAxis(TKH_AXIS);
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64 if (tkhAxis != null) {
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65 /* show baseline if tkhAxis is present */
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66
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67 // TODO: it would probably better to configure this via the ChartSettings, but currently no chart settings are loaded,
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68 // so it is unclear if that feature still works.
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69 final Stroke baselineStroke = new BasicStroke(2, BasicStroke.CAP_BUTT, BasicStroke.JOIN_MITER);
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70 plot.setRangeZeroBaselineStroke(baselineStroke);
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71 plot.setRangeZeroBaselineVisible(true);
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72 }
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73 }
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74 }
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