OpenSimplex2

Members

Functions

noise2

double noise2(double x, double y)

2D OpenSimplex2 noise, standard lattice orientation.

noise2_XBeforeY

double noise2_XBeforeY(double x, double y)

2D OpenSimplex2 noise, with Y pointing down the main diagonal. Might be better for a 2D sandbox style game, where Y is vertical. Probably slightly less optimal for heightmaps or continent maps.

noise3_Classic

double noise3_Classic(double x, double y, double z)

3D OpenSimplex2 noise, classic orientation. Proper substitute for 3D Simplex in light of Forbidden Formulae. Use noise3_XYBeforeZ or noise3_XZBeforeY instead, wherever appropriate.

noise3_XYBeforeZ

double noise3_XYBeforeZ(double x, double y, double z)

3D OpenSimplex2 noise, with better visual isotropy in (X, Y). Recommended for 3D terrain and time-varied animations. The Z coordinate should always be the "different" coordinate in your use case. If Y is vertical in world coordinates, call noise3_XYBeforeZ(x, z, Y) or use noise3_XZBeforeY. If Z is vertical in world coordinates, call noise3_XYBeforeZ(x, y, Z). For a time varied animation, call noise3_XYBeforeZ(x, y, T).

noise3_XZBeforeY

double noise3_XZBeforeY(double x, double y, double z)

3D OpenSimplex2 noise, with better visual isotropy in (X, Z). Recommended for 3D terrain and time-varied animations. The Y coordinate should always be the "different" coordinate in your use case. If Y is vertical in world coordinates, call noise3_XZBeforeY(x, Y, z). If Z is vertical in world coordinates, call noise3_XZBeforeY(x, Z, y) or use noise3_XYBeforeZ. For a time varied animation, call noise3_XZBeforeY(x, T, y) or use noise3_XYBeforeZ.

noise4_Classic

double noise4_Classic(double x, double y, double z, double w)

4D OpenSimplex2 noise, classic lattice orientation.

noise4_XYBeforeZW

double noise4_XYBeforeZW(double x, double y, double z, double w)

4D OpenSimplex2 noise, with XY and ZW forming orthogonal triangular-based planes. Recommended for 3D terrain, where X and Y (or Z and W) are horizontal. Recommended for noise(x, y, sin(time), cos(time)) trick.

noise4_XYZBeforeW

double noise4_XYZBeforeW(double x, double y, double z, double w)

4D OpenSimplex2 noise, with XYZ oriented like noise3_Classic, and W for an extra degree of freedom. W repeats eventually. Recommended for time-varied animations which texture a 3D object (W=time)

noise4_XZBeforeYW

double noise4_XZBeforeYW(double x, double y, double z, double w)

4D OpenSimplex2 noise, with XZ and YW forming orthogonal triangular-based planes. Recommended for 3D terrain, where X and Z (or Y and W) are horizontal.

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