Enum NodeOp 

pub enum NodeOp {
    Clip {},
    Media {
        source_id: SourceId,
        start: MediaTime,
    },
    Generator {
        generator: Generator,
    },
    Effect {
        input: Option<NodeId>,
        inputs: BTreeMap<String, Option<NodeId>>,
        effect: ClipEffect,
    },
    Transition {
        from: Option<NodeId>,
        to: Option<NodeId>,
        effect: ClipEffect,
        progress: Animated<f32>,
    },
    Transform {
        input: Option<NodeId>,
        transform: VisualProperties,
    },
    Merge {
        layers: Vec<MergeLayer>,
    },
    Matte {
        input: Option<NodeId>,
        matte: Option<NodeId>,
        mode: MatteMode,
    },
    ShapeMask {
        input: Option<NodeId>,
        masks: Vec<ShapeMask>,
    },
    Group {
        composition: CompositionId,
        inputs: Vec<Option<NodeId>>,
        controls: BTreeMap<String, Animated<EffectValue>>,
    },
    GroupInput {
        index: u32,
    },
}

The operation of a CompositionNode.

Animated settings are keyed in composition time (see ClipComposition).

Variants

Clip

The picture of the clip showing the composition: its source at the time-mapped source time, or what its generated source draws.

Media

Another visual source, read at start plus the composition time. Adds no sound to the mix.

Fields

source_id: SourceId

The source; a video, image, or generated source.

start: MediaTime

Source time shown at composition time zero. Non-negative.

Generator

A picture the engine draws.

Fields

generator: Generator

What is drawn.

Effect

A registered effect: its input plus any named images it samples.

Fields

input: Option<NodeId>

The image the effect processes; a bypassed node passes it through.

inputs: BTreeMap<String, Option<NodeId>>

The images the effect samples besides its input, by the names its definition declares (sample_<name> in its shader); at most MAX_EFFECT_INPUTS. An undeclared name, or a declared one left out, fails the frames that draw the node.

effect: ClipEffect

The versioned effect and its parameters.

Transition

A registered two-input transition at an explicit progress.

Fields

from: Option<NodeId>

The image at progress zero.

to: Option<NodeId>

The image at progress one.

effect: ClipEffect

The versioned transition and its parameters.

progress: Animated<f32>

Progress through the transition, in 0..=1.

Transform

The input placed on the canvas by a transform and opacity.

Fields

input: Option<NodeId>

The image placed.

transform: VisualProperties

Position, anchor, scale, rotation, and opacity.

Merge

Ordered layers composited over transparency.

Fields

layers: Vec<MergeLayer>

Layers from bottom to top.

Matte

The input kept where a second image says.

Fields

input: Option<NodeId>

The image kept.

matte: Option<NodeId>

The image whose alpha or luminance is coverage.

mode: MatteMode

Which property of the matte image is coverage.

ShapeMask

The input kept inside shapes.

Fields

input: Option<NodeId>

The image masked.

masks: Vec<ShapeMask>

The shapes, combined in order; at most crate::MAX_CLIP_MASKS. Geometry is in the input image’s normalized space.

Group

Another composition drawn in this one’s time as a group: its output, with group inputs fed from inputs and controls set from controls.

Fields

composition: CompositionId

The composition drawn.

inputs: Vec<Option<NodeId>>

The image for each of its inputs, in its port order.

controls: BTreeMap<String, Animated<EffectValue>>

Values for its controls, by name; unset controls keep the composition’s own value. Keyed in composition time.

GroupInput

In a composition used as a group, the image the group node gives its input index.

Fields

index: u32

The input, in the composition’s port order.

Implementations

impl NodeOp

pub fn inputs(&self) -> Vec<NodeInput<'_>>

Every input of the operation, connected or not, in a fixed order.

pub fn bypass_input(&self) -> Option<NodeInput<'_>>

The input a bypassed node passes through: input for one-input operations and mattes, from for a transition, a merge’s bottom layer, and a group’s first input. None for operations without inputs and merges without layers.

pub const fn has_inputs(&self) -> bool

Whether the operation takes inputs, and so can be bypassed.

pub const fn effect(&self) -> Option<&ClipEffect>

The effect or transition invocation the operation runs, if any.

Trait Implementations

impl Clone for NodeOp

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for NodeOp

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for NodeOp

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl PartialEq for NodeOp

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

Equality operator ==.

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

Inequality operator !=.

impl Serialize for NodeOp

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for NodeOp