@polygonjs/polygonjs/dist/src/core/render/MatDoubleSideTmpSetter.js

node-based WebGL 3D engine https://polygonjs.com

"use strict";
import { DoubleSide } from "three";
import { isArray } from "../Type";
export class MatDoubleSideTmpSetter {
  constructor() {
    this._sidePropertyByMaterial = /* @__PURE__ */ new WeakMap();
    this._bound_setMat = this._setObjectMaterialDoubleSided.bind(this);
    this._bound_restoreMat = this._restoreObjectMaterialSide.bind(this);
  }
  setCoreGroupMaterialDoubleSided(core_group) {
    const objects = core_group.threejsObjects();
    for (const object of objects) {
      object.traverse(this._bound_setMat);
    }
  }
  restoreMaterialSideProperty(core_group) {
    const objects = core_group.threejsObjects();
    for (const object of objects) {
      object.traverse(this._bound_restoreMat);
    }
  }
  _setObjectMaterialDoubleSided(object) {
    const mat = object.material;
    if (mat) {
      if (isArray(mat)) {
        for (const mati of mat) {
          this._setMaterialDoubleSided(mati);
        }
      } else {
        this._setMaterialDoubleSided(mat);
      }
    }
  }
  _restoreObjectMaterialSide(object) {
    const mat = object.material;
    if (mat) {
      if (isArray(mat)) {
        for (const mati of mat) {
          this._restoreMaterialDoubleSided(mati);
        }
      } else {
        this._restoreMaterialDoubleSided(mat);
      }
    }
  }
  _setMaterialDoubleSided(mat) {
    this._sidePropertyByMaterial.set(mat, mat.side);
    mat.side = DoubleSide;
  }
  _restoreMaterialDoubleSided(mat) {
    mat.side = this._sidePropertyByMaterial.get(mat) || DoubleSide;
  }
}