Mercurial > dive4elements > river
comparison flys-artifacts/src/main/java/de/intevation/flys/jfree/JFreeUtil.java @ 3109:63ef889eea2b
SQ: Directly sample our Function objects instead of Function2D from JFreeChart.
flys-artifacts/trunk@4708 c6561f87-3c4e-4783-a992-168aeb5c3f6f
| author | Sascha L. Teichmann <sascha.teichmann@intevation.de> |
|---|---|
| date | Tue, 19 Jun 2012 15:39:02 +0000 |
| parents | 9592b7d76633 |
| children | d8f2ab5b61c3 |
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| 3108:2d4d9050b1c6 | 3109:63ef889eea2b |
|---|---|
| 1 package de.intevation.flys.jfree; | 1 package de.intevation.flys.jfree; |
| 2 | 2 |
| 3 import de.intevation.flys.artifacts.math.Function; | |
| 4 | |
| 3 import java.awt.Shape; | 5 import java.awt.Shape; |
| 6 | |
| 4 import java.awt.geom.Rectangle2D; | 7 import java.awt.geom.Rectangle2D; |
| 5 | 8 |
| 6 import java.util.Iterator; | 9 import java.util.Iterator; |
| 7 | 10 |
| 8 import org.w3c.dom.Document; | |
| 9 | |
| 10 import org.jfree.chart.entity.ChartEntity; | 11 import org.jfree.chart.entity.ChartEntity; |
| 11 import org.jfree.chart.entity.EntityCollection; | 12 import org.jfree.chart.entity.EntityCollection; |
| 12 | 13 |
| 13 import org.jfree.data.function.Function2D; | 14 import org.w3c.dom.Document; |
| 14 | |
| 15 | 15 |
| 16 public class JFreeUtil { | 16 public class JFreeUtil { |
| 17 | 17 |
| 18 /** Do not instantiate. */ | 18 /** Do not instantiate. */ |
| 19 private JFreeUtil() { | 19 private JFreeUtil() { |
| 51 return false; | 51 return false; |
| 52 } | 52 } |
| 53 | 53 |
| 54 | 54 |
| 55 public static StyledXYSeries sampleFunction2D( | 55 public static StyledXYSeries sampleFunction2D( |
| 56 Function2D func, | 56 Function func, |
| 57 Document theme, | 57 Document theme, |
| 58 String seriesKey, | 58 String seriesKey, |
| 59 int samples, | 59 int samples, |
| 60 double start, | 60 double start, |
| 61 double end | 61 double end |
| 62 ) { | 62 ) { |
| 63 StyledXYSeries series = new StyledXYSeries(seriesKey, theme); | 63 StyledXYSeries series = new StyledXYSeries(seriesKey, theme); |
| 64 | 64 |
| 65 double step = (end - start) / (samples - 1); | 65 double step = (end - start) / (samples - 1); |
| 66 | 66 |
| 67 for (int i = 0; i < samples; i++) { | 67 for (int i = 0; i < samples; i++) { |
| 68 double x = start + (step * i); | 68 double x = start + (step * i); |
| 69 series.add(x, func.getValue(x)); | 69 series.add(x, func.value(x)); |
| 70 } | 70 } |
| 71 | 71 |
| 72 return series; | 72 return series; |
| 73 } | 73 } |
| 74 } | 74 } |