Trait SpatialInstances 

pub trait SpatialInstances:
    Debug
    + Send
    + Sync {
    // Required methods
    fn support(&self, index: usize, antialias: f64) -> Rect;
    fn sample_indices(
        &self,
        indices: &[usize],
        point: Point,
        antialias: f64,
        destination: [f32; 4],
        space: BlendSpace,
        composite: InstanceComposite,
    ) -> Result<[f32; 4], ValidationError>;
}

Optional ordered CPU sampling with conservative per-instance support. Outside a declared support rectangle an instance must produce an all-zero source.

Required Methods

fn support(&self, index: usize, antialias: f64) -> Rect

Local support, including antialiasing and numeric guards, for one instance.

fn sample_indices( &self, indices: &[usize], point: Point, antialias: f64, destination: [f32; 4], space: BlendSpace, composite: InstanceComposite, ) -> Result<[f32; 4], ValidationError>

Samples only the ascending, in-range instance indices supplied by a consumer. The compositor must treat all-zero sources as infallible identities.

Dyn Compatibility

This trait is dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety".

Implementors