Actually, these are blurred circles. Apparent when you set the "fuzziness" slider to zero.
Metaballs are different. They are essentially a visualization of electric or gravitational fields. For the traditional formula in 2D, each pixel is colored based on the weighed sum of the inverses of the distances to the center of each "ball".
Metaballs are different. They are essentially a visualization of electric or gravitational fields. For the traditional formula in 2D, each pixel is colored based on the weighed sum of the inverses of the distances to the center of each "ball".