Struct tray_rust::bxdf::merl::Merl

pub struct Merl<'a> { /* fields omitted */ }

BRDF that uses measured data to model the surface reflectance properties. The measured data is from "A Data-Driven Reflectance Model", by Wojciech Matusik, Hanspeter Pfister, Matt Brand and Leonard McMillan, in ACM Transactions on Graphics 22, 3(2003), 759-769

Methods

impl<'a> Merl<'a>

pub fn new(
    brdf: &'a [f32],
    n_theta_h: usize,
    n_theta_d: usize,
    n_phi_d: usize
) -> Merl<'a>

Create a MERL BRDF to use data loaded from a MERL BRDF data file

Trait Implementations

impl<'a> BxDF for Merl<'a>

fn bxdf_type(&self) -> EnumSet<BxDFType>

Get the type of this BxDF

fn eval(&self, w_oi: &Vector, w_ii: &Vector) -> Colorf

Evaluate the BxDF for the pair of incident and outgoing light directions, w_i and w_o.

fn sample(&self, w_o: &Vector, samples: &(f32, f32)) -> (Colorf, Vector, f32)

Sample an incident light direction for an outgoing light direction w_o. samples will be used to randomly sample a direction for the outgoing light Returns the color of the material for the pair of directions, the incident light direction and pdf

fn matches(&self, flags: EnumSet<BxDFType>) -> bool

Check if this BxDF matches the type flags passed

fn pdf(&self, w_o: &Vector, w_i: &Vector) -> f32

Compute the pdf of sampling the pair of directions passed for this BxDF

impl<'a> Clone for Merl<'a>

fn clone(&self) -> Merl<'a>

Returns a copy of the value.

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

Performs copy-assignment from source.

impl<'a> Copy for Merl<'a>