Struct MaterialParams

Source

pub struct MaterialParams {
    pub name: String,
    pub reflectance_pct: f64,
    pub ior: f64,
    pub transmittance_pct: f64,
    pub thickness_mm: f64,
    pub diffusion_pct: f64,
}

Expand description

Material description using manufacturer datasheet values.

These are the values you find on a material datasheet. A lighting designer can fill these in without understanding Monte Carlo internals.

Fields§

§name: String

Human-readable name, e.g. “PMMA opal 3mm”.

§reflectance_pct: f64

Reflexionsgrad [%], 0-100.

How much light is reflected at the surface. For opaque materials: total reflectance (diffuse + specular combined). For transparent materials: Fresnel reflectance is computed from IOR, this field is ignored (set to 0).

§ior: f64

Brechungsindex (index of refraction).

How much light bends when entering the material. PMMA: 1.49, glass: 1.52, polycarbonate: 1.585. Set to 0.0 for opaque materials (metal, paint).

§transmittance_pct: f64

Lichtdurchlässigkeit [%], 0-100 at the given thickness.

How much light passes through (measured at normal incidence). 0 = fully opaque, 92 = clear PMMA 3mm, 50 = heavy opal PMMA 3mm.

§thickness_mm: f64

Dicke [mm].

Material thickness. Affects volume scattering path length and Beer-Lambert absorption. Ignored for opaque materials.

§diffusion_pct: f64

Streuungsgrad [%], 0-100.

Degree of light diffusion/scattering.

0 = perfectly clear (or mirror-specular for opaque)
25 = satin/frosted
60 = light opal
95 = heavy opal (near-Lambertian exit distribution)
100 = fully diffuse (matte paint for opaque)

Maps directly to haze values in datasheets (e.g. Evonik Plexiglas).

Implementations§

Source §

impl MaterialParams

Source

pub fn to_material(&self) -> Material

Convert user-facing parameters to internal physics Material.

Trait Implementations§

Source §

impl Clone for MaterialParams

Source §

fn clone(&self) -> MaterialParams

Returns a duplicate of the value. Read more

1.0.0 (const: unstable) · Source§

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

Performs copy-assignment from source. Read more

Source §

impl Debug for MaterialParams

Source §

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter. Read more

Auto Trait Implementations§

§

impl UnwindSafe for MaterialParams

Blanket Implementations§

Source §

impl<T> Any for T
where T: 'static + ?Sized,

Source §

fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more

Source §

impl<T> Borrow<T> for T
where T: ?Sized,

Source §

fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more

Source §

impl<T> BorrowMut<T> for T
where T: ?Sized,

Source §

fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more

Source §

impl<T> CloneToUninit for T
where T: Clone,

Source §

unsafe fn clone_to_uninit(&self, dest: *mut u8)

🔬This is a nightly-only experimental API. (clone_to_uninit)

Performs copy-assignment from self to dest. Read more

Source §

impl<T> From<T> for T

Source §

fn from(t: T) -> T

Returns the argument unchanged.

Source §

impl<T, U> Into for T
where U: From<T>,

Source §

fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

Source §

impl<T> IntoEither for T

Source §

fn into_either(self, into_left: bool) -> Either<Self, Self>

Converts self into a Left variant of Either<Self, Self> if into_left is true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more

Source §

fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
where F: FnOnce(&Self) -> bool,

Converts self into a Left variant of Either<Self, Self> if into_left(&self) returns true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more

Source §