internal static Double interpolate_XY_3( Double x, Double y, Double z, Double xs, Double ys, Int32 x0, Int32 x1, Int32 y0, Int32 y1, Int32 iz, Int32 seed, WorkerNoise3 noisefunc) { var v1 = interpolate_X_3(x, y, z, xs, x0, x1, y0, iz, seed, noisefunc); var v2 = interpolate_X_3(x, y, z, xs, x0, x1, y1, iz, seed, noisefunc); return Lerp(ys, v1, v2); }