In article <3dccdb7a@news.povray.org>, Simon Adameit <gom### [at] gmxde> 
wrote:

> They dont use ray marching but instead they put a disc at each point and 
> intersect the ray with these to see if an intersection occured.

Yes, I found that out when I actually looked at the paper. The abstract 
was a bit misleading...it doesn't rely on the point density in this way.


> They only consider points within a certain distance to the ray. If 
> there is an intersection they interpolate it from all the points 
> within a short cylinder that is started at that location.

In other words, within a certain distance of a short segment of the ray, 
not the whole ray. Though it looks like they are also thinking about 
using a cylinder based on the first disc hit, that would allow them to 
precalculate the points to consider.

-- 
Christopher James Huff <cja### [at] earthlinknet>
http://home.earthlink.net/~cjameshuff/
POV-Ray TAG: chr### [at] tagpovrayorg
http://tag.povray.org/

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