Mercurial > dive4elements > gnv-client
comparison gnv-artifacts/src/main/java/de/intevation/gnv/math/AreaInterpolation.java @ 528:44415ae01ddb
Fixed issue gnv/issue159
gnv-artifacts/trunk@624 c6561f87-3c4e-4783-a992-168aeb5c3f6f
| author | Sascha L. Teichmann <sascha.teichmann@intevation.de> |
|---|---|
| date | Mon, 25 Jan 2010 18:25:19 +0000 |
| parents | 96a1e92e7ed2 |
| children | b248531fa20b |
comparison
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deleted
inserted
replaced
| 527:f598702b2a10 | 528:44415ae01ddb |
|---|---|
| 19 */ | 19 */ |
| 20 public class AreaInterpolation | 20 public class AreaInterpolation |
| 21 implements Serializable | 21 implements Serializable |
| 22 { | 22 { |
| 23 private static Logger log = Logger.getLogger(AreaInterpolation.class); | 23 private static Logger log = Logger.getLogger(AreaInterpolation.class); |
| 24 | |
| 25 public static final int CULL_POINT_THRESHOLD = Integer.getInteger( | |
| 26 "gnv.areainterpolation.cull.point.threshold", 1000); | |
| 27 | 24 |
| 28 protected double [] raster; | 25 protected double [] raster; |
| 29 | 26 |
| 30 protected int width; | 27 protected int width; |
| 31 protected int height; | 28 protected int height; |
| 59 if (points == null || points.isEmpty()) { | 56 if (points == null || points.isEmpty()) { |
| 60 log.warn("no points to interpolate"); | 57 log.warn("no points to interpolate"); |
| 61 return false; | 58 return false; |
| 62 } | 59 } |
| 63 | 60 |
| 64 Envelope relevantArea = null; | |
| 65 | |
| 66 if (points.size() > CULL_POINT_THRESHOLD) { | |
| 67 relevantArea = new Envelope(boundingBox); | |
| 68 relevantArea.expandBy( | |
| 69 0.05d*boundingBox.getWidth(), | |
| 70 0.05d*boundingBox.getHeight()); | |
| 71 } | |
| 72 | |
| 73 List<GridCell> cells = GridCell.pointsToGridCells( | 61 List<GridCell> cells = GridCell.pointsToGridCells( |
| 74 points, relevantArea); | 62 points, |
| 63 Interpolation2D.relevantArea( | |
| 64 boundingBox, | |
| 65 points)); | |
| 75 | 66 |
| 76 if (cells.isEmpty()) { | 67 if (cells.isEmpty()) { |
| 77 log.warn("no cells to interpolate"); | 68 log.warn("no cells to interpolate"); |
| 78 return false; | 69 return false; |
| 79 } | 70 } |