Enum PortValue 

pub enum PortValue {
    Features(OpaqueValue),
    Raster(Arc<RasterBuf>),
    Sprite(Arc<RasterBuf>),
    Brush(OpaqueValue),
    Labels(OpaqueValue),
    Scalar(ScalarValue),
    ScalarField(Arc<ScalarField>),
}

One value flowing along an edge. Cloning is cheap (Arc / Copy).

Variants

Features(OpaqueValue)

Raster(Arc<RasterBuf>)

Sprite(Arc<RasterBuf>)

Brush(OpaqueValue)

Labels(OpaqueValue)

Label placement candidates or decisions (see PortKind::Labels).

Scalar(ScalarValue)

ScalarField(Arc<ScalarField>)

Implementations

impl PortValue

pub fn kind(&self) -> PortKind

pub fn as_scalar_field(&self) -> Option<&Arc<ScalarField>>

pub fn as_raster(&self) -> Option<&Arc<RasterBuf>>

pub fn as_sprite(&self) -> Option<&Arc<RasterBuf>>

pub fn approx_bytes(&self) -> usize

Approximate heap bytes held by this value’s payload.

Exact for the pixel-carrying variants (raster, sprite, scalar field) — the ones that dominate render-time memory. Type-erased payloads (features, brushes, labels) report 0 because their concrete types live in other crates; treat the number as “bytes in pixel buffers”, which is what memory reports care about. The interned blank raster reports 0: it is one allocation shared by every holder, so charging it per holder would badly overstate what a render or a cache is really costing.

pub fn as_scalar(&self) -> Option<&ScalarValue>

Trait Implementations

impl Clone for PortValue

fn clone(&self) -> PortValue

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for PortValue

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

Formats the value using the given formatter.