float|vector|vector2 gxnoise(vector2 xy)
float|vector|vector2 gxnoise(float x, float y)
float|vector|vector2 gxnoise(vector xyz)
float|vector|vector2 gxnoise(vector4 xyzt)
Simplex noise is similar to Perlin noise, except with samples on a simplex mesh rather than a grid. This family of simplex noise functions uses a different lattice structure and a cheaper accumulation method compared to xnoise.
The various functions return noise value at a 4D (
vector4 argument), 3D
vector argument), or 2D (a single
vector2 argument or two
position. You can also get a random floating point value or a vector of two or
Noise values will be in the 0-1 range. Nature of the noise field depends on the number of input dimensions. Higher-dimensional noise uses tighter noise elements, and the resultant noise field appears more structured and less smooth. Consider using the slower xnoise function in higher dimensions if this function gives you undesirable results.