CSG might be better, easier.

union {
torus {1,.5}
sphere {<0,1,0>,.75 scale <1.5,1,1.5> clipped_by {plane {y,.45}}}
sphere {<0,-1,0>,.75 scale <1.5,1,1.5> clipped_by {plane {-y,.45}}}
 pigment {rgb<1,0,0>}
   rotate <-30,15,0>
}

This is a rough sketch, tweaking may be needed.


portelli wrote:
> 
>         I'm trying to make a blood cell and I am not very successful.  First I
> tried using a circle of blobs, using a while loop.  I worked sort of,
> but not good enough.  I'm not to good with splines but I'm going to try
> and do that.  Here is my blob code:
> 
> #declare b = 0;
> blob
> {
>         threshold .6
>         #while ( b<20)
>                 sphere { < .6, 0, 0> .55, 1 rotate <0, b/20*360, 0> }
>                // sphere { < 0, 0, 0> .3, 2 }
> 
>                 #declare b = b+1;
>         #end
>         pigment { color Red }
>         rotate <-40, 0, 0>
> }
> The second sphere does not appear to add  to the blob.   Why?

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