Le 19-08-21 à 12:36, Kima a écrit :
> Is there a standard way to create a photo studio-like background (e.g.,
> https://i.ebayimg.com/images/g/KxwAAOSwzvlW-6Kv/s-l1600.jpg)
> 
> It is the combination of two planes as an object shadow drops on them depending
> on the distance.
> 
> I tried to make one by merging two perpendicular planes (to eliminate the
> horizon line), but wasn't successful.
> 
> 
Using merge does nothing to the line where the planes intersect. All it 
does is to suppress the surfaces that are inside the planes.

You can place a clipped cylinder to smooth it out.

union{
  plane{x, -1}
  plane{-z, -1}
  cylinder{1001*x, -1001*x, 1
    clipped_by box{<1000,0,0><-1000,-1,-1> inverse}
   }
}

Adjust the radius of the cylinder, the clipping box and location of the 
planes to suit your need.

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