Greetings;
I've made an in-PovRay stereo 3D image generator (stereo pair) which depends
on the following:
1) All lights are in the light-group
2) Object is an union
3) Separate the one object left-and-right, rotate slightly opposite
directions
4) Put a black plane down the z axis

(More details, not pertinent)
To do this, one must eliminate these two things:
1) Shadows changing (light_group solves this)
2) Reflections from each object upon the other (black plane fixes this)

In beta 9 and 10 this worked perfectly.
In beta 11, it doesn't.  (One of my objects loses an highlight)

a beta 10 output:
http://tetrahedraverse.com/tverse/Sph_14.jpg

a beta 11 output:
http://tetrahedraverse.com/temp/SphProb.gif

The scene file that creates these (typical; the only difference the
coordinates of the spheres' locations):
http://tetrahedraverse.com/temp/SphProb.pov

Has something changed in light_group's workings between the betas 10 and 11?
I'd hate to lose what was working so well....
TNX

John Brawley

--
Peace
JB
jgb### [at] earthlinknet
http://tetrahedraverse.com

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"John Brawley" <jgb### [at] earthlinknet> wrote in
news:3c6bc60f$1@news.povray.org: 

> In beta 9 and 10 this worked perfectly.
> In beta 11, it doesn't.  (One of my objects loses an highlight)

I don't know why this would have worked in beta 9 or 10.  The plane is 
between the left object and the only light which creates highlights 
(shadowless lights do not create highlights) and is blocking the light from 
creating a highlight.  Add no_shadow to your plane definition and 
everything will work properly.

> John Brawley

I guess you're the same John Brawley who used to post on Fidonet?  That's 
two people from Fido that I've bumped into in Povland.

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