Mercurial > dive4elements > river
comparison artifacts/src/main/java/org/dive4elements/river/jfree/ColorMapper.java @ 8910:d9c89651bd67
Area chart layers may now have an 'arebgpattern'. Real pattern yet to be defined.
| author | gernotbelger |
|---|---|
| date | Thu, 22 Feb 2018 18:46:37 +0100 |
| parents | |
| children | 5dacb6ea75a1 |
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| 8909:31dff17c6828 | 8910:d9c89651bd67 |
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| 1 /** Copyright (C) 2017 by Bundesanstalt für Gewässerkunde | |
| 2 * Software engineering by | |
| 3 * Björnsen Beratende Ingenieure GmbH | |
| 4 * Dr. Schumacher Ingenieurbüro für Wasser und Umwelt | |
| 5 * | |
| 6 * This file is Free Software under the GNU AGPL (>=v3) | |
| 7 * and comes with ABSOLUTELY NO WARRANTY! Check out the | |
| 8 * documentation coming with Dive4Elements River for details. | |
| 9 */ | |
| 10 package org.dive4elements.river.jfree; | |
| 11 | |
| 12 import java.awt.Color; | |
| 13 import java.awt.image.LookupTable; | |
| 14 | |
| 15 final class ColorMapper extends LookupTable { | |
| 16 | |
| 17 private final int[] from; | |
| 18 private final int[] to; | |
| 19 | |
| 20 public ColorMapper(final Color from, final Color to) { | |
| 21 super(0, 4); | |
| 22 | |
| 23 this.from = new int[] { from.getRed(), from.getGreen(), from.getBlue(), from.getAlpha(), }; | |
| 24 this.to = new int[] { to.getRed(), to.getGreen(), to.getBlue(), to.getAlpha(), }; | |
| 25 } | |
| 26 | |
| 27 @Override | |
| 28 public int[] lookupPixel(final int[] src, final int[] dest) { | |
| 29 final int[] out = dest == null ? new int[src.length] : dest; | |
| 30 | |
| 31 // REMARK: only compare rgb, so we even keep the transparency level | |
| 32 if (src[0] == this.from[0] && src[1] == this.from[1] && src[2] == this.from[2]) { | |
| 33 out[0] = this.to[0]; | |
| 34 out[1] = this.to[1]; | |
| 35 out[2] = this.to[2]; | |
| 36 out[2] = src[3]; | |
| 37 } else { | |
| 38 System.arraycopy(src, 0, out, 0, src.length); | |
| 39 } | |
| 40 | |
| 41 return out; | |
| 42 } | |
| 43 } |