I see 3 solutions:
1-Generate a thicker isosurface (with a transverse gradient)
You can always apply a Tube to the generated lines to achieve thicker
lines. If you are rendering in Hardware/OpenGL you can also set
multipixel lines (look in the manual).
2-Algorithm for interpolation (I don't know what it's called...
Consists of shading nearby regions instead of generating just one
pixel to render the line)
3-Output in vector format
We have worked on a postscript output generator, but it has bugs. Not
sure if/when we're going to release.
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David L. Thompson Visualization and Imagery Solutions, Inc.
mailto:[EMAIL PROTECTED] 5515 Skyway Drive, Missoula, MT 59804
Phone : (406)756-7472
