Due to the current gap in continued funding from the U.S. National Science Foundation (NSF), the NSF Unidata Program Center has temporarily paused most operations. See NSF Unidata Pause in Most Operations for details.
Due to the current gap in continued funding from the U.S. National Science Foundation (NSF), the NSF Unidata Program Center has temporarily paused most operations. See NSF Unidata Pause in Most Operations for details.
> I thought that there was some general getValue(x,y,z) function in Field, > that allowed the renderer to render volume transparent of the actuall grid. > This makes it of course a bit more complex. There is such a method, evaluate(), but almost all Field rendering techniques depend on the topology of the Field sampling. For example, iso-surfaces (and iso-curves for 2-D Fields) depend on topology. > Why are there 6 texture plane sets, and not only 3. It was my impression > that the texture planes would look the same from both sides. Is it to > bypass the depth sorting problem in Java 3D or something? There need to be two for each axis (X, Y and Z) so the planes can be correctly sorted whether you are looking toward the positive or negative direction on the axis. > Resampling works, but takes away much of the resolution since most of the > elements are concetrated around one area. What about boundry extraction? Is > the easiest way to simply locate all triangles on the boundry and put them > in a Irregular2DSet? You might try providing users with interactive control of the bounds of the Linear3DSet, so they can zoom the resampling in on a small area. VisAD does not provide a method for computing boundaries, so you'll have to write one. You'd put the boundary triangles in an Irregular3DSet with manifold dimension = 2 rather than an Irregular2DSet. Finding them could be tricky. Perhaps Curtis has someting to add. Cheers, Bill ---------------------------------------------------------- Bill Hibbard, SSEC, 1225 W. Dayton St., Madison, WI 53706 hibbard@xxxxxxxxxxxxxxxxx 608-263-4427 fax: 608-263-6738 http://www.ssec.wisc.edu/~billh/vis.html
visad archives: