Module vec3

Structs§

cross: Computes the cross product of two vectors.
dot: Computes the dot product of two vectors.
random_in_hemisphere: Returns a random point in the hemisphere around the normal (uniform hemisphere sampling).
random_in_unit_disk: Returns a random point inside the unit disk (z=0 plane, rejection method).
random_in_unit_sphere: Returns a random point inside the unit sphere (rejection method).
random_unit_vector: Returns a random point on the unit sphere surface (true Lambertian reflection).
reflect: Computes the reflection vector (v: incident direction, n: unit surface normal).
refract: Computes the refraction vector (Snell’s law).
unit_vector: Returns the unit vector in the same direction as v.
write_color: Averages pixel_color over samples_per_pixel samples and converts to an “R G B” string.
write_color_gamma: Averages pixel_color over samples_per_pixel samples, applies gamma=2 correction (square root), and converts to an “R G B” string.