## blob28 |

The blob in all its glory:

Twirl with your mouse

C shape, maybe a good case.

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

# name of the blob project = "blob28"; 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 k = -0.5; j = -15; theta = atan2(x,y); w = ((0.3*x).^2 + (0.3*y + 0.0*(z).*(z - 1)).^2 + (z.^2)); w = w + 2./((0.8*x - 0.5).^2 + (y - 0.0).^2 + (z - 0).^2); w = w - (0.3)./((x - 2).^2 + (y - 2).^2 + 8*z.^4); w = w - (0.3)./((x - 2).^2 + (y + 2).^2 + 8*z.^4); w = w-1; endfunction; c_outer = [0,0,0]; r_outer = [30,30,30]; step = 4; # grid pitch in mm start with 4mm to see the shape quickly. Once you have it just right, change to 2mm for printing source("../octave/func2stl_v01.m"); # do all the calculationsGNU Octave