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Blob Farm

The blob in all its glory:

Twirl with your mouse

Cute little twist. Has possibilites as a case.

$r  \sqrt{x^{2} + y^{2}}$
$- 2.3254629358757537  θ + 0.05 (r^{2} + r)$
$\frac{1.}{0.25929779018999743 {❘ r ❘}^{2.5} + 0.018771511647921367 {❘ r ❘}^{2.} + 5.656854249492381 {❘ z ❘}^{2.5}} + \frac{0.6}{0.049295030175464945 {❘ r ❘}^{2.5} + {❘ z ❘}^{2.5}}  2.$

Click on the snapshot to download the blob's stl file.

Octave Code:

1; # Prevent Octave from thinking that this is a function
   # though one is defined here
   
  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);
   # function at origin must be <0, and >0 far enough away.  w=0 defines the surface
   th = atan2(x,y);
   r = sqrt(x.^2+y.^2);
   phi = th + (r+r.^2)*0.05;
   w = (1.0)./(abs(0.2*cos(phi).*r).^2+abs(0.8*sin(phi).*r).^2.5+abs(2*z).^2.5)+(0.6)./(abs(r*0.3).^2.5+abs(z).^2.5)-2.0;

   endfunction;

GNU Octave

blob05