Hello,

I try to simulate the projection, through distorting lenses, of a sinusoidal
grid. I found (thanks to Alain !) how to use photon option to project the
shadow of an object through a lens. But actually, my sinusoidal grid is
performed using a texture option. Accordingly, the projected shadow is the
one of the object and not the one of the texture. Is it any solution to
produce the shadow of a texture ? Hereunder my code to generate the
sinusoidal grid:

#declare H = 2;
#declare W = 2;
#declare nb_periods = 3;
#declare length_period = H / nb_periods;

intersection{
  // container
  box{
    <-H/2,-1,-W/2>
    <H/2,1,W/2>
    pigment {transmit 1}
  }

  // signal
  plane {
    y, 0 hollow
    texture {
      pigment {
        gradient x scale H/nb_periods
        sine_wave
        color_map {[0 rgb 1] [1 rgbf 1]}
      }
    }
  }
}

The resulting shadow is the one of the box and not the one of the signal. If
anyone could help me, i should be very grateful ! Thanks in advance...

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