Struct CompositionContext

pub struct CompositionContext<'a> { /* private fields */ }

Provides access to common utilities, such as methods to lookup other composition tree nodes, or Rng.

This struct is provided as an argument to Renderer::render.

Implementations

impl<'a> CompositionContext<'a>

pub fn find<Element>(&self) -> CtxQuery<'_, Element, impl Fn(&Element)>

where Element: Element,

Search the in-progress composition tree for nodes of type Element. Returns a CtxQuery, allowing further specifications before running the search.

pub fn beat_length(&self) -> i32

Returns the composition beat length. A composition’s tempo (BPM) is relative to this value.

pub fn rng(&self) -> impl Rng

Creates an Rng seeded from the currently rendering segment’s seed.

pub fn rng_with_seed(&self, seed: impl Hash) -> impl Rng

Creates an Rng seeded from a combination of the currently rendering segment’s seed as well as the provided seed.

Trait Implementations

impl Clone for CompositionContext<'_>

fn clone(&self) -> CompositionContext<'_>

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<'a> Debug for CompositionContext<'a>

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

Formats the value using the given formatter.

impl Copy for CompositionContext<'_>