Model - Nodes#

API reference for src/schema/nodes, src/lanes/views/nodes on @huukhanhnguyen/model, reachable from ..

See the Guide for the ModelJSON / evaluate pipeline.

API reference#

Signatures are generated from the live package .d.ts - not hand-written.

ArgumentNodeJSON#

type

type ArgumentNodeJSON
// = ExpressionNodeJSON & { argName: string; }

ChildNode#

type

type ChildNode
// = EntitiesNodeHost | ContainerNodeHost | ParameterNodeHost | ExpressionNodeHost | BaseNodeHost

DirtyTarget#

type

type DirtyTarget
// = {
    isDirty?: boolean;
    _epoch?: number;
    _dependents?: Iterable<DirtyTarget>;
    parent?: DirtyTarget;
    _hooks?: NodeHooks;
}

ExpressionNodeJSON#

type

type ExpressionNodeJSON
// = BaseObjectJSON & { expression: string; }

foldView#

function

Fold a view chain (literal/default eval) into its definition.

foldView(view: View, options?: FoldViewOptions): FoldedView

KeyedNode#

type

The shared surface both node kinds carry (see EntitiesNode/ContainerNode). label is ALWAYS a live ArgumentNode (never null) — same "always constructed, default expression ''" contract ParameterNode.label uses — so the UI can always bind an editable field to it; hasLabelOf is the content-based check for "was this actually authored".

type KeyedNode
// = BaseNodeHost & { key: string; label: ArgumentNodeHost; enabled: ArgumentNodeHost | null; }

KeyedNodeEntry#

type

One key reachable from an expression context, with the resolution strategy ExpressionNode._buildContext historically applied at that position: a top-level node always unwraps single-cardinality (resolveNodeValue); a nested operation resolves to its raw baked step output (referenceValue) when available, else falls back the same way. See NodeCollection.keyedNodes.

type KeyedNodeEntry
// = {
    key: string;
    node: BaseNodeHost;
    useReferenceValue: boolean;
}

ObjectChannel#

type

Which half of an object moved — a renderer re-tessellates for "content", writes one matrix for "transform", repaints for "props".

type ObjectChannel
// = "content" | "transform" | "props"

ObjectChannelListener#

type

type ObjectChannelListener
// = (key: string, channel: ObjectChannel) => void

ObjectInstance#

type

The lifted placement of one scene object — what its whole content sits under, compiled from the object chain's TAIL instead of baked into geometry.

transformation is the product of the trailing move/rotate steps (null when the tail has none). The props are PLACEMENT DEFAULTS: the consumer applies each to a content entity that carries none of its own — an entity stamped inside the body always wins.

type ObjectInstance
// = {
    transformation: Transformation | null;
    material?: string;
    layer?: string;
    name?: string;
}

ObjectSignature#

type

The three comparable halves of a resolved object — Model diffs these to pick a channel, and skips the emit entirely when all three match.

type ObjectSignature
// = {
    content: string;
    transform: string;
    props: string;
}

ObjectValue#

type

One objects[] entry resolved into LOCAL content + its instance placement.

content is the object's fold up to (not including) the tail — so editing only the tail leaves it IDENTICAL (same array identity, same content keys), which is what lets a renderer move an object by writing one matrix instead of re-tessellating it. A consumer that needs world space applies instance.transformation itself (bakeBlock for whole-object consumption).

type ObjectValue
// = {
    content: Entity[];
    instance: ObjectInstance;
}

OptionNodeJSON#

type

type OptionNodeJSON
// = {
    label: string;
    input: string;
}

ParameterNodeJSON#

type

type ParameterNodeJSON
// = BaseObjectJSON & { method: string; key: string; /** Args as array — value + constraints merged into each arg object. */ args?: Argument[]; label?: string; /** Declared-flat marker — INERT on a value node (2D enforcement applies * to entity operations only); carried so the flag round-trips verbatim. */ flat?: boolean; /** This parameter's use of a track (see Operation.animation's doc * comment in modelDocument.ts). */ animation?: AnimationBinding; }