Christopher James Huff wrote:
> In article <3dcc3148@news.povray.org>, Simon Adameit <gom### [at] gmxde> 
> wrote:
> It isn't what I meant by volumetric rendering, but it does require 
> sampling a volume...it seems to do "ray marching", stepping along the 
> ray until point density goes above a threshold, then using the points 
> within a certain distance of that location (though the abstract says 
> within a distance to the ray, which doesn't seem to make sense) to 
> figure out an approximation of the real distance.

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. 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.

> That is a very interesting paper, I'm going to have a try at 
> implementing that object...need to get some papers of my own written 
> first, though. Homework...bleh.
>

Post a reply to this message