Mercurial > dive4elements > gnv-client
diff gnv-artifacts/ChangeLog @ 528:44415ae01ddb
Fixed issue gnv/issue159
gnv-artifacts/trunk@624 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author | Sascha L. Teichmann <sascha.teichmann@intevation.de> |
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date | Mon, 25 Jan 2010 18:25:19 +0000 |
parents | f598702b2a10 |
children | d2c68f2f619b |
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--- a/gnv-artifacts/ChangeLog Mon Jan 25 17:06:01 2010 +0000 +++ b/gnv-artifacts/ChangeLog Mon Jan 25 18:25:19 2010 +0000 @@ -1,3 +1,46 @@ +2010-01-25 Sascha L. Teichmann <sascha.teichmann@intevation.de> + + Fix/Workaround for gnv/issue159 + + * src/main/java/de/intevation/gnv/state/profile/horizontalcrosssection/HorizontalCrossSectionMeshOutputState.java, + src/main/java/de/intevation/gnv/state/profile/verticalcrosssection/VerticalCrossSectionOutputState.java, + src/main/java/de/intevation/gnv/state/profile/horizontal/HorizontalProfileMeshCrossOutputState.java: + Deactivated the index buffer by default because applying it gives to + less data points in some circumstances. When processing the + "horizontalen Schnittprofile", the "Profilschnitte" and the + "Horizontalschnitte" the whole set of mesh cells for + the given parameters are retrieved. This results in much + more traffic from database (~ 10x) but seems not to be much slower. + The memory consumption increases accordingly. + + To turn the index buffer on again use the boolean system properties: + + "gnv.horizontal.profile.mesh.cross.index.buffer" + "gnv.vertical.cross.section.index.buffer" + "gnv.horizontal.profile.mesh.cross.index.buffer" + + * src/main/java/de/intevation/gnv/math/Interpolation2D.java: Because much + more data is processed a more sophisticated point culling strategy is + implemented now. + + If the number of points are higher than a given threshold (system property + "gnv.interpolation2d.cull.point.threshold", default: 1000) a culling is + performed. Two cases: + + a) given a path P ("horizontales Schnittprofil", "Profilschnitt") + Calculates a bounding box B for P and continues with (b). + + b) a bounding box B ("Horizontalschnitt", and above after (a)) + Calculates a bounding box C for the input points. If the + area of B is greater than 80% of the area of C no culling is + performed. Else B is extended by 10% in each direction. + If the new area of B is smaller than 10% of the area of C + B is adjusted to have at least 10% the size of C. + + All input points that are not inside B are culled. Afterwards the + i/j grid cell units are created and pushed into a spatial index + as described below. + 2010-01-25 Ingo Weinzierl <ingo.weinzierl@intevation.de> Issue157