| Faster alternative to ISOSURFACE [message #24068] |
Sat, 03 March 2001 04:56 |
karthik balasubramani
Messages: 3
Registered: March 2001
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Junior Member |
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I have implemented an alternative to IDL's ISOSURFACE routine:
KB_ISOSURFACE, volume, seedpoint, outverts [, /ISOVALUE, /DECIMATE,
MAX_MERGE = value, PERCENT_VERTICES = value]
I felt the need for a number of reasons:
- I need to be able to extract an isosurface passing through a specific
point
in the volume.
- I needed simplified/decimated isosurfaces that contain very few triangles.
(Running MESH_DECIMATE as a post-process didn't give me good results, and
for
some large data, took too long.)
- I wanted a faster routine, even if it meant foregoing some of the extra
detail that ISOSURFACE's marching tetrahedra might provide. KB_ISOSURFACE
often runs about 100 times faster on my data(2-16 Mb).
For what it is worth, anyone who might find my routine useful, can
get it at:
http://members.tripod.com/~clunis_immensus/software/idl/iso. html
cheers,
Karthik Balasubramaniam
CAS Technologies, Chennai
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