Blob Farm

blob18

The blob in all its glory:

Twirl with your mouse

Splat shape, based on inversion on a sphere, https://www.thingiverse.com/thing:3054687

Click on the snapshot to download the blob's stl file. ../snapshots/blob18.png
Octave Code:
  function w = f(x2,y2,z2,c,r,e) 
   x = (x2-c(1))/r(1);
   y=(y2-c(2))/r(2);
   z=(z2-c(3))/r(3);
   k2 = 2.4; 
   nb = 7; # number of knobs
   th = atan2(x,y);
   r = sqrt(x.^2+y.^2);
   w = ((0.5*cos(nb*th)-0.75).^2 + z.^2 + (r-5).^2).*((x/k2).^2+(y/k2).^2+(z/1.3).^4-1)-3.5 ;  
   endfunction;

GNU Octave