Unique identifier for this node. Uses a monotonically increasing atomic counter to guarantee collision-free IDs across the lifetime of the process, even under concurrent creation.

onDirty

var onDirty: () -> Unit?

Callback invoked when dirty propagation reaches a root node (parent == null). Used by IsometricScene to trigger Canvas invalidation via Compose state.

parent

var parent: IsometricNode?

Parent node in the tree

position

var position: Point

Local transform properties

renderOptions

var renderOptions: RenderOptions?

Optional per-node render options override. When non-null, overrides the inherited render options for this node and its subtree. When null (default), inherits from the parent context.

rotation

var rotation: Double

rotationOrigin

var rotationOrigin: Point?

scale

var scale: Double

scaleOrigin

var scaleOrigin: Point?

Functions

markClean

fun markClean()

Clear dirty flag (called after rendering)

markDirty

fun markDirty()

Mark this node and all ancestors as dirty. When propagation reaches the root (no parent), invokes onDirty to trigger a Canvas redraw via Compose's snapshot system.

renderTo

open override fun renderTo(output: MutableList<RenderCommand>, context: RenderContext)

Render this node and its children into the given accumulator list. Eliminates intermediate list allocations compared to a returning render() method.

updateChildrenSnapshot

fun updateChildrenSnapshot()

Update the snapshot from the current mutable children list. Called by the Applier after structural mutations.