Mercurial > dive4elements > gnv-client
comparison gnv-artifacts/ChangeLog @ 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 | 7399bb8f83ea |
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| 436:6642ab6c583c | 437:b624879d2902 |
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| 1 2009-12-27 Sascha L. Teichmann <sascha.teichmann@intevation.de> | |
| 2 | |
| 3 * src/main/java/de/intevation/gnv/raster/IsoPolygonSeriesProducer.java: | |
| 4 New. Vectorizer rings callback which produces iso lines in | |
| 5 form of PolygonSeries. These series can be added to PolygonDatasets. | |
| 6 If a IsoPolygonSeriesProducer.LabelGenerator is given | |
| 7 each of the series has an attribute "label" which could be used | |
| 8 to label text on the plot. TODO: Add label rendering to plot. | |
| 9 | |
| 10 Iso line generation is a bit more sophisticated than pure | |
| 11 region tracing. Along a border of a region there could | |
| 12 be more than one type neighborhood. This is due to quantification | |
| 13 errors introduced by the fact that steep value gradients | |
| 14 are sampled to less points. The only ways out would be an | |
| 15 increase of the sample resolution or an other algorithm | |
| 16 working directly on the interpolated floating point samples. | |
| 17 | |
| 18 * src/main/java/de/intevation/gnv/raster/Vectorizer.java: Made | |
| 19 line simplification work with open polygons, too. | |
| 20 | |
| 21 * src/main/java/de/intevation/gnv/math/IJKey.java: Added method | |
| 22 to sort (i, j) in place. | |
| 23 | |
| 24 * src/main/java/de/intevation/gnv/jfreechart/PolygonRenderer.java: | |
| 25 Do not close line shapes because iso lines are not closed shapes | |
| 26 in general. | |
| 27 | |
| 28 * src/main/java/de/intevation/gnv/raster/PolygonDatasetProducer.java: | |
| 29 Added author. Some reformatting. | |
| 30 | |
| 1 2009-12-26 Sascha L. Teichmann <sascha.teichmann@intevation.de> | 31 2009-12-26 Sascha L. Teichmann <sascha.teichmann@intevation.de> |
| 2 | 32 |
| 3 * src/main/java/de/intevation/gnv/raster/PolygonDatasetProducer.java: | 33 * src/main/java/de/intevation/gnv/raster/PolygonDatasetProducer.java: |
| 4 New. Vectorizer rings callback which produces PolygonDatasets suitable | 34 New. Vectorizer rings callback which produces PolygonDatasets suitable |
| 5 to be fed into PolygonPlot. | 35 to be fed into PolygonPlot. |