Le 19-08-23 à 14:20, Steve Anger a écrit :
> I'm using the following declaration to create a red spot light with a visible
> beam and then using the declaration in multiple place. The object appears
> multiple times in the rendered scene but only one instance appears to have a
> light source. Can you duplicate light source in this way?
> 
> #declare MySpotLight =
> union {
>   light_source {
>    <0,-0.35, 0>
>    color Red*2
>    spotlight
>    radius 25
>    falloff 30
>    point_at <0, 0.3095, 0>
>   }
> 
>   cone {
>    <0,-0.5, 0>, 0.0
>    <0, +0.3,0>, 0.4
>    pigment { rgbt<1,1,1,1> }
>    finish { ambient 0.0 diffuse 0 }
>    hollow
>    no_shadow
>    photons { pass_through }
>    interior {
>     media {
>      scattering {3, Red*0.7 extinction 1.0 }
>      samples 1,1
>     }
>    }
>   }
> }
> 
> 
> 
For your media, you should use only a single parameter for samples, and 
it should be larger than 2.

The syntax that you use is intended for sampling method 1 and 2, not the 
default method 3.

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