Metaballs

To represent objects in 3D animations, are typically used a set of surfaces formed by triangles or quadrilaterals (quads), on which textures are applied to create the relief effect. There are other techniques used also implied less known. Metaball is the name of a technique by computer graphics to simulate organic interaction between different n-dimensional objects (mixing as mercury droplets over the surface) and was invented by Jim Blinn to early 1980.