Copy and paste this into google search: 2 + (- sqrt(1- x^2- (y- abs(x))^2))cos(30((2-x^2-(y-abs(x))^2))), x is from -1 to 1, y is from -1 to 1.5, z is from 1 to 2 will get you this: Require a internet browsers capable of WebGL and a powerful computer
