In article <39b2a43b$1@news.povray.org>, "Bob Hughes" 
<per### [at] aolcom?subject=PoV-News:> wrote:

> Sorry if I missed this before, is there a possibility of it winking out
> instead?  A on/off type of situation based on a arbitrary size supplied to
> it?
> I guess not, since that would be a different kind of thing.

That would be more of a lens flare effect. It should be possible to do 
though, just trace a ray at the glow from the camera position, to check 
for objects between the glow and the camera. It would take some work to 
figure out how much the flare should show, since the objects may be 
transparent, but it should be possible. And it shouldn't slow the 
rendering down too much, since the visibility checking could be done 
before the rendering. You could do something similar in POV-Script, 
using the trace() function to disable a glow if something passes in 
front of it.

-- 
Christopher James Huff
Personal: chr### [at] maccom, http://homepage.mac.com/chrishuff/
TAG: chr### [at] tagpovrayorg, http://tag.povray.org/

<><

Post a reply to this message