Struct SkyState 

pub struct SkyState { /* private fields */ }

The state of the sky model. Ideally, you should keep the state around as long as any of the SkyParams parameters don’t change. If any parameters change, you must re-create the SkyState object.

Note: if you are planning to run the model in a shader, you only need to translate SkyState::radiance into shader code. The rest can be executed on the CPU. You grab the raw parameters using SkyState::raw and upload the 30 f32s to the GPU in a uniform buffer, for example.

Implementations

impl SkyState

pub fn new(sky_params: &SkyParams) -> Result<Self, Error>

Creates SkyState.

Errors

Can fail if any of the parameters are out of range.

pub fn radiance(&self, theta: f32, gamma: f32, channel: Channel) -> f32

Evaluates incoming radiance for a given channel. See the figure on how theta and gamma are defined.

pub fn raw(&self) -> ([f32; 27], [f32; 3])

Returns the internal state. Used when SkyState::radiance is implemented and executed externally, for example as a GPU shader.

Trait Implementations

impl Clone for SkyState

fn clone(&self) -> SkyState

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for SkyState

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

Formats the value using the given formatter.

impl PartialEq for SkyState

fn eq(&self, other: &SkyState) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Copy for SkyState

impl StructuralPartialEq for SkyState