/**
 * SceneNode.ts
 *
 * Scene graph node: hierarchical transform, parent/child,
 * local+world matrices, dirty flags, tag/layer assignment.
 *
 * @module scene
 */
export interface Transform {
    position: [number, number, number];
    rotation: [number, number, number];
    scale: [number, number, number];
}
export type Matrix4 = Float64Array;
export declare class SceneNode {
    readonly id: string;
    name: string;
    tags: Set<string>;
    layer: number;
    visible: boolean;
    private local;
    private worldMatrix;
    private dirty;
    private parent;
    private children;
    constructor(id: string, name?: string);
    setPosition(x: number, y: number, z: number): void;
    setRotation(x: number, y: number, z: number): void;
    setScale(x: number, y: number, z: number): void;
    getLocalTransform(): {
        position: {
            x: number;
            y: number;
            z: number;
        };
        rotation: {
            x: number;
            y: number;
            z: number;
        };
        scale: {
            x: number;
            y: number;
            z: number;
        };
    };
    getWorldPosition(): {
        x: number;
        y: number;
        z: number;
    };
    getWorldMatrix(): Matrix4;
    addChild(child: SceneNode): void;
    removeChild(child: SceneNode): void;
    getParent(): SceneNode | null;
    getChildren(): SceneNode[];
    getChildCount(): number;
    traverse(callback: (node: SceneNode, depth: number) => void, depth?: number): void;
    private markDirty;
    updateWorldMatrix(): void;
    private computeLocalMatrix;
    private setIdentity;
    private multiply;
    isDirty(): boolean;
}
//# sourceMappingURL=SceneNode.d.ts.map