noise

noise -- Noise functions noise(x [, y[, z[, t]]]) / noise(point [, t]) Returns a noise value (Perlin) in the range from 0 to 1. The arguments can be up to 4 floating point values or a sequence with up to 4 floating point values (e.g. a vec3 or a vec4). The return value is a pseudo random number in the range from 0 to 1. Due to the nature of this noise implementation (gradient noise) the return val