Trait rpt::Shape

pub trait Shape: Send + Sync {
    pub fn intersect(
        &self, 
        ray: &Ray, 
        t_min: f64, 
        record: &mut HitRecord
    ) -> bool;
    pub fn sample(
        &self, 
        target: &DVec3, 
        rng: &mut StdRng
    ) -> (DVec3, DVec3, f64);
}

Represents a physical shape, which can be hit by a ray to find intersections

Required methods

pub fn intersect(&self, ray: &Ray, t_min: f64, record: &mut HitRecord) -> bool

Intersect the shape with a ray, for t >= t_min, returning true and mutating h if an intersection was found before the current closest one

pub fn sample(&self, target: &DVec3, rng: &mut StdRng) -> (DVec3, DVec3, f64)

Sample the shape for a random point on its surface, also returning the normal and PDF

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Implementations on Foreign Types

impl<T: Shape + ?Sized> Shape for Box<T>

pub fn intersect(&self, ray: &Ray, t_min: f64, record: &mut HitRecord) -> bool

pub fn sample(&self, target: &DVec3, rng: &mut StdRng) -> (DVec3, DVec3, f64)

impl<T: Shape + ?Sized> Shape for Arc<T>

pub fn intersect(&self, ray: &Ray, t_min: f64, record: &mut HitRecord) -> bool

pub fn sample(&self, target: &DVec3, rng: &mut StdRng) -> (DVec3, DVec3, f64)

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Implementors

impl Shape for Cube

pub fn intersect(&self, ray: &Ray, t_min: f64, record: &mut HitRecord) -> bool

pub fn sample(&self, _target: &DVec3, rng: &mut StdRng) -> (DVec3, DVec3, f64)

impl Shape for MonomialSurface

pub fn intersect(&self, ray: &Ray, t_min: f64, record: &mut HitRecord) -> bool

pub fn sample(&self, _target: &DVec3, rng: &mut StdRng) -> (DVec3, DVec3, f64)

impl Shape for Plane

pub fn intersect(&self, ray: &Ray, t_min: f64, record: &mut HitRecord) -> bool

Ray-plane intersection

pub fn sample(&self, _target: &DVec3, _rng: &mut StdRng) -> (DVec3, DVec3, f64)

impl Shape for Sphere

pub fn intersect(&self, ray: &Ray, t_min: f64, record: &mut HitRecord) -> bool

pub fn sample(&self, target: &DVec3, rng: &mut StdRng) -> (DVec3, DVec3, f64)

Sample a spherical light source, somewhat respecting the solid angle from a target point

Currently, this implementation just generates a random point in the hemisphere facing the target point, weighted by the cosine. This isn't the most sophisticated technique, since you can sample the solid angle exactly, but it's pretty good.

impl Shape for Triangle

pub fn intersect(&self, ray: &Ray, t_min: f64, record: &mut HitRecord) -> bool

pub fn sample(&self, _target: &DVec3, rng: &mut StdRng) -> (DVec3, DVec3, f64)

impl<T: Bounded> Shape for KdTree<T>

pub fn intersect(&self, ray: &Ray, t_min: f64, record: &mut HitRecord) -> bool

pub fn sample(&self, target: &DVec3, rng: &mut StdRng) -> (DVec3, DVec3, f64)

impl<T: Shape> Shape for Transformed<T>

pub fn intersect(&self, ray: &Ray, t_min: f64, record: &mut HitRecord) -> bool

pub fn sample(&self, target: &DVec3, rng: &mut StdRng) -> (DVec3, DVec3, f64)

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