Mercurial > dive4elements > gnv-client
comparison gnv-artifacts/src/main/java/de/intevation/gnv/raster/PolygonDatasetProducer.java @ 437:b624879d2902
Added vectorizer rings callback to generate iso lines.
gnv-artifacts/trunk@485 c6561f87-3c4e-4783-a992-168aeb5c3f6f
| author | Sascha L. Teichmann <sascha.teichmann@intevation.de> |
|---|---|
| date | Sun, 27 Dec 2009 05:25:40 +0000 |
| parents | 6642ab6c583c |
| children | f7038820df2e |
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| 436:6642ab6c583c | 437:b624879d2902 |
|---|---|
| 10 | 10 |
| 11 import de.intevation.gnv.jfreechart.PolygonSeries; | 11 import de.intevation.gnv.jfreechart.PolygonSeries; |
| 12 import de.intevation.gnv.jfreechart.PolygonDataset; | 12 import de.intevation.gnv.jfreechart.PolygonDataset; |
| 13 import de.intevation.gnv.jfreechart.CompactXYItems; | 13 import de.intevation.gnv.jfreechart.CompactXYItems; |
| 14 | 14 |
| 15 /** | |
| 16 * @author Sascha L. Teichmann (sascha.teichmann@intevation.de) | |
| 17 */ | |
| 15 public class PolygonDatasetProducer | 18 public class PolygonDatasetProducer |
| 16 implements RingsHandler | 19 implements RingsHandler |
| 17 { | 20 { |
| 18 protected double minX; | 21 protected double minX; |
| 19 protected double minY; | 22 protected double minY; |
| 20 | |
| 21 protected double maxX; | 23 protected double maxX; |
| 22 protected double maxY; | 24 protected double maxY; |
| 23 | 25 |
| 24 protected HashMap<Integer, PolygonSeries> polygonSeries; | 26 protected HashMap<Integer, PolygonSeries> polygonSeries; |
| 25 | 27 |
| 63 /* minX = 0*m1 + b1 <=> b1 = minX | 65 /* minX = 0*m1 + b1 <=> b1 = minX |
| 64 * maxX = (width-1)*m1 + b1 | 66 * maxX = (width-1)*m1 + b1 |
| 65 * m1 = (maxX - minX)/(width-1) | 67 * m1 = (maxX - minX)/(width-1) |
| 66 */ | 68 */ |
| 67 | 69 |
| 68 double b1 = minX; | 70 double b1 = minX; |
| 69 double m1 = width != 1 | 71 double m1 = width != 1 |
| 70 ? (maxX - minX)/(width-1) | 72 ? (maxX - minX)/(width-1) |
| 71 : 0d; | 73 : 0d; |
| 72 | 74 |
| 73 double b2 = minY; | 75 double b2 = minY; |
| 74 double m2 = height != 1 | 76 double m2 = height != 1 |
| 75 ? (maxY - minY)/(height-1) | 77 ? (maxY - minY)/(height-1) |
| 76 : 0d; | 78 : 0d; |
| 77 | 79 |
| 78 for (Edge head: rings) { | 80 for (Edge head: rings) { |
| 79 Edge current = head; | 81 Edge current = head; |
| 80 do { | 82 do { |
| 81 double x = m1*(current.a % width) + b1; | 83 vertices.add(m1*(current.a % width) + b1); |
| 82 double y = m2*(current.a / width) + b2; | 84 vertices.add(m2*(current.a / width) + b2); |
| 83 vertices.add(x); | |
| 84 vertices.add(y); | |
| 85 current = current.next; | |
| 86 } | 85 } |
| 87 while (current != head); | 86 while ((current = current.next) != head); |
| 88 ps.addRing(new CompactXYItems(vertices.toNativeArray())); | 87 ps.addRing(new CompactXYItems(vertices.toNativeArray())); |
| 89 vertices.clear(); | 88 vertices.clear(); |
| 90 } | 89 } |
| 91 } | 90 } |
| 92 | 91 |