Enum rtow::material::Material

pub enum Material {
    Lambertian(Attenuation),
    Metal(Attenuation, Fuzziness),
    Dielectric(RefractiveIndex),
}

Variants

Lambertian(Attenuation)

Matte.

Metal(Attenuation, Fuzziness)

Metal.

Dielectric(RefractiveIndex)

i.e. glass.

Trait Implementations

impl Debug for Material

fn fmt(&self, __arg_0: &mut Formatter) -> Result

Formats the value using the given formatter.

impl Clone for Material

fn clone(&self) -> Material

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Scatterable for Material

fn scatter(&self, ray: &Ray, hitpoint: &HitPoint) -> Option<(Ray, Attenuation)>

Different materials scatter in different ways:

• A Lambertian (matte) object reflects the ray along the direction of the normal vector, which is slightly altered by adding a random delta.
• A Metal reflects the ray along a direction which is symmetrical to the normal vector. Depending on the fuzziness of the metal, a random delta may be added to this direction.
• A Dielectric (i.e. glass) material can either reflect or refract the ray. The probability of each event depends on multiple factors, such as the refractive index and the angle of incidence. This probability is roughly approximated by the schlick polynomial.