mylingo3d/lib/api/core/Appendable.js

Lingo3D is a React/Vue 3d game development framework that ships with a complete visual editor

import { Disposable } from "@lincode/promiselikes";
import { Object3D } from "three";
import { emitSceneGraphChange } from "../../events/onSceneGraphChange";
export const appendableRoot = new Set();
export const hiddenAppendables = new WeakSet();
export default class Appendable extends Disposable {
    outerObject3d;
    nativeObject3d;
    constructor(outerObject3d = new Object3D()) {
        super();
        this.outerObject3d = outerObject3d;
        outerObject3d.userData.manager = this;
        this.nativeObject3d = outerObject3d;
        appendableRoot.add(this);
        emitSceneGraphChange();
    }
    get uuid() {
        return this.outerObject3d.uuid;
    }
    parent;
    children;
    _append(child) {
        appendableRoot.delete(child);
        emitSceneGraphChange();
        child.parent?.children?.delete(child);
        child.parent = this;
        (this.children ??= new Set()).add(child);
    }
    traverse(cb) {
        for (const child of this.children ?? []) {
            cb(child);
            child.traverse(cb);
        }
    }
    traverseSome(cb) {
        for (const child of this.children ?? []) {
            if (cb(child))
                return true;
            child.traverseSome(cb);
        }
        return false;
    }
    append(child) {
        this._append(child);
        this.outerObject3d.add(child.outerObject3d);
    }
    attach(child) {
        this._append(child);
        this.outerObject3d.attach(child.outerObject3d);
    }
    dispose() {
        if (this.done)
            return this;
        super.dispose();
        appendableRoot.delete(this);
        emitSceneGraphChange();
        this.parent?.children?.delete(this);
        this.parent = undefined;
        this.outerObject3d.parent?.remove(this.outerObject3d);
        if (this.children)
            for (const child of this.children)
                child.dispose();
        return this;
    }
}
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