warp.sample_unit_sphere

warp.sample_unit_sphere(state: uint32) → vec3f

Kernel

Python

Uniformly sample a point inside the unit ball (radius <= 1).

Returns a vec3. In a kernel, advances state in place; called from the Python scope, it does not modify state, so repeated calls with the same state return the same point (see rand_init()).

The other sample_unit_* helpers are called the same way (initialize rng with rand_init(), then pass it), differing only in the domain they sample:

@wp.kernel
def random_points(seed: int, out: wp.array[wp.vec3]):
    i = wp.tid()
    rng = wp.rand_init(seed, i)
    out[i] = wp.sample_unit_sphere(rng)