randUnit3D¶
-
taichi_glsl.randgen.
randUnit3D
()¶ Generate a 3-D random unit vector whose length is equal to 1.0. The return value is a 3-D vector, whose tip distributed evenly on the surface of a unit sphere.
- Returns
The return value is computed as:
u = randUnit2D() s = rand() * 2 - 1 c = sqrt(1 - s ** 2) return vec3(c * u, s)