Le 17-04-30 à 11:04, Kenneth a écrit :
> (using Windows 7 64-bit)
> 
> I haven't used a light_group in a long time, so I can't remember exactly what
> its behavior was in v3.62, but I don't think it's working correctly in the beta.
> I've included a test scene below.
> 
> Although the light_group's light does not appear on objects outside the group
> (which is correct), it's still casting shadows from those objects, onto the
> object in the light_group. Is that proper behavior? I don't recall a similar
> problem in v3.62 (although I could be wrong.) The included documentation doesn't
> mention shadow behavior (except as relates to scattering media.)

This is the correct and expected behaviour and did not change since 
light_group have been introduced.

> 
> Also, the light's looks_like object (yellow sphere) is showing lighting effects
> from the extra 'global light', even with 'global_lights off' in the light_group
> (although there's no shadow from that sphere, as far as I can tell.) I don't
> know if that is correct behavior or not.

Can't tell for that part, but it brobably did not change.

> 
> --------
> #version 3.71;
> 
> global_settings{assumed_gamma 1.0 max_trace_level 5}
> 
> camera {
>    perspective
>    location  <0, 0, -3.5>
>    look_at   <0, 0,  0>
>    right     x*image_width/image_height
>    angle 35
> }
> 
> background {rgb .2}
> 
> // the extra 'global light'-- up and to the left
> light_source {
>    0*x
>    color rgb <1,1,1>
>    translate <-30, 30, -10>
>               }
> 
> 
> light_group{
> light_source {
>    0*x
>    color rgb 80000*<1,.5,.5>
>    fade_power 1.5
>    fade_distance .001
>    looks_like{
>       sphere{0,.03 texture{pigment{rgb <1,.8,0>}finish{ambient 0 diffuse .9}}}
>              }
>    translate <.09, .2, -.06>
>               }
> plane{y,-.61
>      texture{
>           pigment{
>                cells
>                scale .5
>                color_map{
>                     [0 rgb .5]
>                     [1 rgb 1]
>                         }
>                  }
>           finish{
>                ambient 0
>                diffuse .4
>                 }
>             }
>       }
>    // global_lights on
>             }
> 
> 
> // tall thin box
> #declare TALL_BOX =
> box{<-.02,-1,-.02>, <.02,1,.02>
>      texture{
>          pigment{rgb <.4,1,.4>}
>          finish{ambient 0 diffuse .9}
>             }
>          rotate 30*y
>     }
> 
> object{TALL_BOX}
> 
> object{TALL_BOX
> rotate 80*x
> translate <-.3,-.3,.3>
>        }
> 
>

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