vent-template/src/views/vent/monitorManager/fanLocalMonitor/fanLocal.three.bk.ts

import * as THREE from 'three';
import { CSS3DObject } from 'three/examples/jsm/renderers/CSS3DRenderer.js';
import { animateCamera, getTextCanvas, renderVideo, updateAxisCenter } from '/@/utils/threejs/util';
import UseThree from '../../../../utils/threejs/useThree';
import fcFan from './fcfanLocal.three';
import fmFan from './fmfanLocal.three';
import Smoke from '/@/views/vent/comment/threejs/Smoke';
import gsap from 'gsap';
import useEvent from '../../../../utils/threejs/useEvent';

// import * as dat from 'dat.gui';
// const gui = new dat.GUI();
// gui.domElement.style = 'position:absolute;top:100px;left:10px;z-index:99999999999999';

const modelName = 'jbfj-hd';
// 模型对象、 文字对象
let model: UseThree | undefined,
  group: THREE.Object3D | undefined,
  fcFanObj: fcFan | undefined,
  fmFanObj: fmFan | undefined,
  player1,
  fanType,
  topSmoke: Smoke | undefined,
  downSmoke: Smoke | undefined, //
  returnSmoke: Smoke | undefined,
  topLife: number | undefined,
  downLife: number | undefined,
  playerStartClickTime1 = new Date().getTime();

const { mouseDownFn, mousemoveFn, mouseUpFn } = useEvent();

// 打灯光
const addLight = () => {
  const directionalLight = new THREE.DirectionalLight(0xffffff, 1.2);
  directionalLight.position.set(-564, 602, -261);
  group?.add(directionalLight);
  // directionalLight.target = group;

  // const spotLight = new THREE.SpotLight();
  // spotLight.angle = Math.PI / 16;
  // spotLight.penumbra = 0;
  // spotLight.castShadow = true;
  // spotLight.position.set(0, 463, 687);
  // scene.add(spotLight);

  // spotLight.shadow.camera.near = 0.5; // default
  // spotLight.shadow.camera.far = 1000; // default
  // spotLight.shadow.focus = 1;
  // spotLight.shadow.bias = -0.000002;
  // spotLight.target = group;

  // const pointLight6 = new THREE.PointLight(0xffffff, 1, 500);
  // pointLight6.position.set(-131, 64, -1);
  // pointLight6.shadow.bias = 0.05;
  // group?.add(pointLight6);

  // gui.add(directionalLight.position, 'x', -1000, 1000);
  // gui.add(directionalLight.position, 'y', -1000, 1000);
  // gui.add(directionalLight.position, 'z', -1000, 1000);

  // gui.add(pointLight6.position, 'x', -500, 500);
  // gui.add(pointLight6.position, 'y', -500, 500);
  // gui.add(pointLight6.position, 'z', -500, 500);
  // gui.add(pointLight6, 'distance', 0, 500);
};

// 重置摄像头
const resetCamera = () => {
  model.camera.position.set(0, -1000, 100);
  model.camera.far = 1000;
  model.orbitControls?.update();
  model.camera.updateProjectionMatrix();
};

// 设置模型位置
const setModalPosition = () => {
  if (!group) return;
  group.position.set(0, 10, -50);
  group.rotation.y = Math.PI / 2;
};

const setControls = () => {
  if (model && model.orbitControls) {
    model.orbitControls.panSpeed = 0.5;
    model.orbitControls.rotateSpeed = 0.5;
    model.orbitControls.maxPolarAngle = Math.PI / 2.4;
    model.orbitControls.minPolarAngle = Math.PI / 3;
  }
};

// 切换局部通风机类型
export const setModelType = (type) => {
  fanType = type;
  return new Promise((resolve) => {
    // 显示双道风窗
    let childGroup;
    if (fanType === 'fm' && fcFanObj && fcFanObj.group) {
      if (group?.getObjectByName('jbfj-fc')) {
        group?.remove(fcFanObj.group);
      }
      childGroup = fmFanObj?.group;
      if (group && group?.getObjectByName('text5') && group?.getObjectByName('text4')) {
        group.getObjectByName('text5')['visible'] = false;
        group.getObjectByName('text4')['visible'] = true;
      }
    } else if (fanType === 'fc' && fmFanObj && fmFanObj.group) {
      // 显示单道风窗
      if (group?.getObjectByName('jbfj-fm')) {
        group?.remove(fmFanObj.group);
      }
      childGroup = fcFanObj?.group;
      if (group && group?.getObjectByName('text5') && group?.getObjectByName('text4')) {
        group.getObjectByName('text5')['visible'] = true;
        group.getObjectByName('text4')['visible'] = false;
      }
    } else {
      if (group?.getObjectByName('jbfj-fc')) {
        group?.remove(fcFanObj.group);
      }
      if (group?.getObjectByName('jbfj-fm')) {
        group?.remove(fmFanObj.group);
      }
      if (group && group?.getObjectByName('text5') && group?.getObjectByName('text4')) {
        group.getObjectByName('text5')['visible'] = false;
        group.getObjectByName('text4')['visible'] = false;
      }
      childGroup = null;
    }
    setTimeout(async () => {
      if (childGroup) group?.add(childGroup);
      const oldCameraPosition = { x: 615, y: 275, z: 744 };
      await animateCamera(oldCameraPosition, { x: 0, y: 0, z: 0 }, { x: 0.08, y: 21.73, z: 78.45 }, { x: 0.13, y: -0.82, z: 0.236 }, model, 0.8);
      resolve(null);
    }, 300);
  });
};

/* 添加监控数据 */
export const addText = (selectData) => {
  if (!group) {
    return;
  }
  const screenDownText = VENT_PARAM['modalText']
    ? VENT_PARAM['modalText']
    : History_Type['type'] == 'remote'
    ? `国能神东煤炭集团监制`
    : '煤炭科学技术研究院有限公司研制';

  const screenDownTextX = 80 - (screenDownText.length - 10) * 6;
  const textArr = [
    {
      text: `智能局部通风机监测与控制系统`,
      font: 'normal 30px Arial',
      color: '#009900',
      strokeStyle: '#002200',
      x: 20,
      y: 108,
    },
    {
      text: `供风距离(m):`,
      font: 'normal 30px Arial',
      color: '#009900',
      strokeStyle: '#002200',
      x: 0,
      y: 152,
    },
    {
      text: `${
        selectData.airSupplyDistence_merge
          ? selectData.airSupplyDistence_merge
          : selectData.fchimenylength
          ? selectData.fchimenylength
          : selectData.airSupplyDistence_merge
          ? selectData.airSupplyDistence_merge
          : '-'
      }`,
      font: 'normal 30px Arial',
      color: '#009900',
      strokeStyle: '#002200',
      x: 228,
      y: 152,
    },
    {
      text: `风筒直径(mm): `,
      font: 'normal 30px Arial',
      color: '#009900',
      strokeStyle: '#002200',
      x: 0,
      y: 200,
    },
    {
      text: ` ${selectData.fchimenydiamlimit ? selectData.fchimenydiamlimit : selectData.ductDiameter_merge ? selectData.ductDiameter_merge : '-'}`,
      font: 'normal 30px Arial',
      color: '#009900',
      strokeStyle: '#002200',
      x: 220,
      y: 200,
    },
    {
      text: `故障诊断:`,
      font: 'normal 30px Arial',
      color: '#009900',
      strokeStyle: '#002200',
      x: 0,
      y: 245,
    },
    {
      text: `${selectData.warnLevel_str ? selectData.warnLevel_str : '-'}`,
      font: 'normal 30px Arial',
      color: '#009900',
      strokeStyle: '#002200',
      x: 220,
      y: 245,
    },
    {
      text: `型号功率:`,
      font: 'normal 30px Arial',
      color: '#009900',
      strokeStyle: '#002200',
      x: 0,
      y: 285,
    },
    {
      text: `${selectData.model_Power_merge ? selectData.model_Power_merge : '-'}`,
      font: 'normal 26px Arial',
      color: '#009900',
      strokeStyle: '#002200',
      x: 220,
      y: 285,
    },
    {
      text: screenDownText,
      font: 'normal 28px Arial',
      color: '#009900',
      strokeStyle: '#002200',
      x: screenDownTextX,
      y: 325,
    },
  ];
  getTextCanvas(526, 346, textArr, '').then((canvas: HTMLCanvasElement) => {
    const textMap = new THREE.CanvasTexture(canvas); // 关键一步
    const textMaterial = new THREE.MeshBasicMaterial({
      // 关于材质并未讲解 实操即可熟悉                 这里是漫反射类似纸张的材质,对应的就有高光类似金属的材质.
      map: textMap, // 设置纹理贴图
      transparent: true,
      side: THREE.FrontSide, // 这里是双面渲染的意思
    });
    textMaterial.blending = THREE.CustomBlending;
    const monitorPlane = group.getObjectByName('monitorText');
    if (monitorPlane) {
      monitorPlane.material = textMaterial;
    } else {
      const planeGeometry = new THREE.PlaneGeometry(526, 346); // 平面3维几何体PlaneGeometry
      const planeMesh = new THREE.Mesh(planeGeometry, textMaterial);
      planeMesh.name = 'monitorText';
      planeMesh.scale.set(0.0135, 0.0135, 0.0135);
      planeMesh.rotation.y = -Math.PI / 2;
      planeMesh.position.set(-84.79, 0.82, 17.0);
      group.add(planeMesh);
    }
  });
};

// // css3D文字
export const addCssText = () => {
  if (!group) return;

  if (!group.getObjectByName('text1')) {
    const element = document.getElementById('inputBox') as HTMLElement;
    if (element) {
      const fanLocalCSS3D = new CSS3DObject(element);
      fanLocalCSS3D.name = 'text1';
      fanLocalCSS3D.scale.set(0.04, 0.04, 0.04);
      fanLocalCSS3D.rotation.y = -Math.PI / 2;
      fanLocalCSS3D.position.set(-85.68, 5.97, -3.39);
      group.add(fanLocalCSS3D);
    }
  }

  if (!group.getObjectByName('text2')) {
    const element = document.getElementById('outBox') as HTMLElement;
    if (element) {
      const fanLocalCSS3D = new CSS3DObject(element);
      fanLocalCSS3D.name = 'text2';
      fanLocalCSS3D.scale.set(0.1, 0.1, 0.1);
      fanLocalCSS3D.rotation.y = -Math.PI / 2;
      // fanLocalCSS3D.position.set(74.63, 13.54, 3.84);
      fanLocalCSS3D.position.set(57.84, 10.54, 0.08);
      group.add(fanLocalCSS3D);
    }
  }
  if (!group.getObjectByName('text3')) {
    const element = document.getElementById('returnBox') as HTMLElement;
    if (element) {
      const fanLocalCSS3D = new CSS3DObject(element);
      fanLocalCSS3D.name = 'text3';
      fanLocalCSS3D.scale.set(0.07, 0.07, 0.07);
      fanLocalCSS3D.rotation.y = -Math.PI / 2;
      fanLocalCSS3D.position.set(-25.97, 9.3, -15.09);
      group.add(fanLocalCSS3D);
    }
  }
  if (!group.getObjectByName('text4')) {
    const element = document.getElementById('gateBox') as HTMLElement;
    if (element) {
      // element.innerHTML = '';
      const fanLocalCSS3D = new CSS3DObject(element);
      fanLocalCSS3D.name = 'text4';
      fanLocalCSS3D.scale.set(0.04, 0.04, 0.04);
      fanLocalCSS3D.rotation.y = -Math.PI / 2;
      fanLocalCSS3D.position.set(-73.13, 8.44, -23.52);
      group.add(fanLocalCSS3D);
    }
  }
  if (!group.getObjectByName('text5')) {
    const element = document.getElementById('windownBox') as HTMLElement;
    if (element) {
      // element.innerHTML = '';
      const fanLocalCSS3D = new CSS3DObject(element);
      fanLocalCSS3D.name = 'text5';
      fanLocalCSS3D.scale.set(0.07, 0.07, 0.07);
      fanLocalCSS3D.rotation.y = -Math.PI / 2;
      fanLocalCSS3D.position.set(-28.44, 9.78, -40.42);
      group.add(fanLocalCSS3D);
    }
  }
  if (!group.getObjectByName('text7')) {
    const element = document.getElementById('inputBox0') as HTMLElement;
    if (element) {
      const fanLocalCSS3D = new CSS3DObject(element);
      fanLocalCSS3D.name = 'text7';
      fanLocalCSS3D.scale.set(0.04, 0.04, 0.04);
      fanLocalCSS3D.rotation.y = -Math.PI / 2;
      fanLocalCSS3D.position.set(-84.23, 4.97, -18.92);
      group.add(fanLocalCSS3D);
    }
  }
  if (!group.getObjectByName('text6')) {
    const element = document.getElementById('inputBox1') as HTMLElement;
    if (element) {
      const fanLocalCSS3D = new CSS3DObject(element);
      fanLocalCSS3D.name = 'text6';
      fanLocalCSS3D.scale.set(0.04, 0.04, 0.04);
      fanLocalCSS3D.rotation.y = -Math.PI / 2;
      fanLocalCSS3D.position.set(-84.23, 6.89, -4.2);
      group.add(fanLocalCSS3D);
    }
  }
  if (!group.getObjectByName('text8')) {
    const element = document.getElementById('gasBox3') as HTMLElement;
    if (element) {
      const fanLocalCSS3D = new CSS3DObject(element);
      fanLocalCSS3D.name = 'text8';
      fanLocalCSS3D.scale.set(0.03, 0.03, 0.03);
      fanLocalCSS3D.rotation.y = -Math.PI / 2;
      fanLocalCSS3D.position.set(-90.04, 6, 5);
      group.add(fanLocalCSS3D);
    }
  }
  if (!group.getObjectByName('text9')) {
    const element = document.getElementById('gasBox2') as HTMLElement;
    if (element) {
      const fanLocalCSS3D = new CSS3DObject(element);
      fanLocalCSS3D.name = 'text9';
      fanLocalCSS3D.scale.set(0.07, 0.07, 0.07);
      fanLocalCSS3D.rotation.y = -Math.PI / 2;
      fanLocalCSS3D.position.set(-8, 7.46, -35.28);
      group.add(fanLocalCSS3D);
    }
  }
  if (!group.getObjectByName('text10')) {
    const element = document.getElementById('gasBox1') as HTMLElement;
    if (element) {
      const fanLocalCSS3D = new CSS3DObject(element);
      fanLocalCSS3D.name = 'text10';
      fanLocalCSS3D.scale.set(0.1, 0.1, 0.1);
      fanLocalCSS3D.rotation.y = -Math.PI / 2;
      fanLocalCSS3D.position.set(80, 9, -43);
      group.add(fanLocalCSS3D);
    }
  }
};

// export const playSmoke = (controlType, deviceType, frequency, state) => {
//   if (frequency) {
//     setSmokeFrequency(deviceType, frequency);
//   }
//   if (controlType === 'startSmoke') {
//     runFly(deviceType, state);
//   }
// };
export const playSmoke = (selectData) => {
  // debugger;
  // console.log('selectData[Fan1fHz]------------》', selectData['Fan1fHz'], Number(selectData['Fan1fHz']));
  if (selectData['Fan1StartStatus'] == '1') {
    // 主风机打开
    // setSmokeFrequency('top', Number(selectData['Fan1fHz']) || 40);
    setSmokeFrequency('top', 40);
    runFly('top', 'open');
  } else {
    // 备风机关闭
    runFly('top', 'close');
  }
  if (selectData['Fan2StartStatus'] == '1') {
    // 备风机打开
    // setSmokeFrequency('down', Number(selectData['Fan2fHz']) || 40);
    setSmokeFrequency('down', 40);
    runFly('down', 'open');
  } else {
    // 备风机关闭
    runFly('down', 'close');
  }

  if (selectData['Fan1StartStatus'] != '1' && selectData['Fan2StartStatus'] != '1') {
    runFly('all', 'close');
  }

  // if (frequency) {
  //   setSmokeFrequency(deviceType, frequency);
  // }
  // if (controlType === 'startSmoke') {
  //   runFly(deviceType, state);
  // }
};

const initFly = async () => {
  const topCurve = [
    {
      path0: new THREE.Vector3(-89.84, 2.359, 4.91),
      path1: new THREE.Vector3(-85.678, 2.359, 3.61),
      isSpread: true,
      spreadDirection: -1, //
    },
    {
      path0: new THREE.Vector3(-85.678, 2.352, 3.66),
      path1: new THREE.Vector3(-85.636, 2.353, -3.829),
      isSpread: false,
      spreadDirection: 0,
    },
    {
      path0: new THREE.Vector3(-85.636, 2.353, -3.829),
      path1: new THREE.Vector3(-85.636, 1.026, -5.881),
      isSpread: false,
      spreadDirection: 0,
    },
    {
      path0: new THREE.Vector3(-85.636, 1.026, -5.881),
      path1: new THREE.Vector3(-85.618, 0.887, -12.862),
      isSpread: false,
      spreadDirection: 0,
    },
    {
      path0: new THREE.Vector3(-85.618, 0.827, -12.962),
      path1: new THREE.Vector3(80.404, 0.827, -12.962),
      isSpread: false,
      spreadDirection: 0,
    },
    {
      path0: new THREE.Vector3(80.404, 0.827, -12.962),
      path1: new THREE.Vector3(93.164, 0.85, -12.962),
      isSpread: true,
      spreadDirection: 1, // 1是由小变大，-1是由大变小
    },
  ];

  const downCurve = [
    {
      path0: new THREE.Vector3(-94.84, -0.388, 3.61),
      path1: new THREE.Vector3(-85.678, -0.393, 3.61),
      isSpread: true,
      spreadDirection: -1, //
    },
    {
      path0: new THREE.Vector3(-85.678, -0.393, 3.275),
      path1: new THREE.Vector3(-85.636, -0.392, -3.829),
      isSpread: false,
      spreadDirection: 0,
    },
    {
      path0: new THREE.Vector3(-85.636, -0.392, -3.829),
      path1: new THREE.Vector3(-85.636, 0.926, -5.881),
      isSpread: false,
      spreadDirection: 0,
    },
    {
      path0: new THREE.Vector3(-85.636, 1.026, -5.881),
      path1: new THREE.Vector3(-85.618, 0.887, -12.862),
      isSpread: false,
      spreadDirection: 0,
    },
    {
      path0: new THREE.Vector3(-85.618, 0.887, -12.962),
      path1: new THREE.Vector3(80.404, 0.887, -12.962),
      isSpread: false,
      spreadDirection: 0,
    },
    {
      path0: new THREE.Vector3(80.404, 0.887, -12.962),
      path1: new THREE.Vector3(93.164, 0.91, -12.962),
      isSpread: true,
      spreadDirection: 1, // 1是由小变大，-1是由大变小
    },
  ];

  const returnCurve = [
    {
      path0: new THREE.Vector3(93.164, 0.85, -12.962),
      path1: new THREE.Vector3(86.39, 0.827, -12.962),
      isSpread: false,
      spreadDirection: 2,
    },
    {
      path0: new THREE.Vector3(86.39, 0.827, -12.962),
      path1: new THREE.Vector3(83.341, 0.847, -17.658),
      isSpread: false,
      spreadDirection: 2,
    },
    {
      path0: new THREE.Vector3(83.341, 0.847, -17.658),
      path1: new THREE.Vector3(-29.077, 0.847, -17.658),
      isSpread: false,
      spreadDirection: 2,
    },
    {
      path0: new THREE.Vector3(-29.077, 0.847, -17.658),
      path1: new THREE.Vector3(-29.64, 0.827, -39.047),
      isSpread: false,
      spreadDirection: 2,
    },
  ];

  if (!topSmoke) {
    topSmoke = new Smoke('/model/img/texture-smoke.png', '#ffffff', 0, 0.75, 0.5, 400);
    topSmoke.setPath(topCurve);
    await topSmoke.setPoints();
    group?.add(topSmoke.points);
  }
  if (!downSmoke) {
    downSmoke = new Smoke('/model/img/texture-smoke.png', '#ffffff', 0, 0.75, 0.5, 400);
    downSmoke.setPath(downCurve);
    await downSmoke.setPoints();
    group?.add(downSmoke.points);
  }

  if (!returnSmoke) {
    returnSmoke = new Smoke('/model/img/texture-smoke.png', '#777777', 0, 0.35, 1.5, 200);
    returnSmoke.setPath(returnCurve);
    await returnSmoke.setPoints();
    group?.add(returnSmoke.points);
  }
};

const runFly = (deviceType, state) => {
  if (state === 'open') {
    if (deviceType === 'top') {
      if (downSmoke && downSmoke.frameId) {
        downSmoke.stopSmoke();
      }
      if (topSmoke && !topSmoke.frameId) {
        topSmoke.startSmoke();
      }
    } else {
      if (topSmoke && topSmoke.frameId) {
        topSmoke.stopSmoke();
      }
      if (downSmoke && !downSmoke.frameId) {
        downSmoke.startSmoke();
      }
    }
    if (returnSmoke && !returnSmoke.frameId) {
      returnSmoke?.startSmoke();
    }
  } else {
    if (deviceType === 'top') {
      if (topSmoke && topSmoke.frameId) {
        topSmoke.stopSmoke();
      }
    } else {
      if (downSmoke && downSmoke.frameId) {
        downSmoke.stopSmoke();
      }
    }
  }
  if (deviceType === 'all' && state === 'close') {
    returnSmoke?.stopSmoke();
  }
};

// 调频 30-50 (life 300 - 800) , 25 = （800 - 300）/ 20
const setSmokeFrequency = (deviceType, frequency) => {
  const life = (frequency - 30) * 25;
  let duration = 0;
  let smoke;

  if (deviceType === 'top') {
    if (topLife == life) {
      return;
    }
    topLife = life;
    smoke = topSmoke;
    duration = (Math.abs(life - smoke.life) / 500) * 25;
  } else {
    if (downLife == life) {
      return;
    }
    downLife = life;
    smoke = downSmoke;
    duration = (Math.abs(life - smoke.life) / 500) * 25;
  }
  if (smoke) {
    gsap.to(smoke, {
      life: life,
      duration: duration,
      ease: 'easeInCubic',
      overwrite: true,
    });
  }
};

const clearFly = () => {
  if (topSmoke) topSmoke.clearSmoke();
  if (downSmoke) downSmoke.clearSmoke();
  if (returnSmoke) returnSmoke.clearSmoke();
};
// 初始化事件
const startAnimation = () => {
  // 定义鼠标点击事件
  model.canvasContainer?.addEventListener('mousedown', mouseEvent.bind(null));
  model.canvasContainer?.addEventListener('pointerup', mouseUp);
};

// 鼠标点击、松开事件
const mouseEvent = (event) => {
  if (event.button == 0) {
    model?.canvasContainer?.addEventListener('mousemove', mousemove);
    mouseDownFn(<UseThree>model, <THREE.Object3D>group, event, (intersects) => {
      intersects.find((intersect) => {
        const mesh = intersect.object;
      });
    });
    console.log('摄像头控制信息', model?.orbitControls, model?.camera);
  }
};

const mouseUp = () => {
  if (!model) return;
  mouseUpFn(model);
  model.canvasContainer?.removeEventListener('mousemove', mousemove);
};

const mousemove = () => {
  mousemoveFn();
};

export const mountedThree = (playerVal1) => {
  player1 = playerVal1;
  return new Promise((resolve) => {
    // model = VENT_PARAM['simulatedPassword'] ? new UseThree('#fanLocal3D', '#fanLocal3DCSS') : new UseThree('#fanLocal3D');
    model = new UseThree('#fanLocal3D', '#fanLocal3DCSS');
    model.setEnvMap('test1.hdr');
    model.renderer.toneMappingExposure = 1.0;
    if (model.renderer) {
      model.renderer.sortObjects = true;
    }
    resetCamera();
    model.setGLTFModel([modelName]).then(async (gltf) => {
      group = <THREE.Object3D>gltf[0];
      const Fengtongbu01 = group?.getObjectByName('Cylinder1054') as THREE.Mesh;
      if (Fengtongbu01) {
        const textMaterial = new THREE.MeshBasicMaterial({
          color: '#000',
          transparent: true,
          opacity: 0.3,
          side: THREE.DoubleSide, // 这里是双面渲染的意思
        });
        Fengtongbu01.material = textMaterial;
        Fengtongbu01.renderOrder = 300;
      }

      model?.scene?.add(group);
      setModalPosition();
      setControls();
      await initFly();
      model?.animate();
      addLight(model?.scene);

      fcFanObj = new fcFan(model);
      await fcFanObj.mountedThree();

      fmFanObj = new fmFan(model);
      await fmFanObj.mountedThree();

      startAnimation();
      resolve(model);
    });
  });
};

export const destroy = () => {
  if (model) {
    model.isRender = false;
    console.log('场景销毁后信息----------->', model.renderer?.info);
    clearFly();
    topSmoke = undefined;
    downSmoke = undefined;
    returnSmoke = undefined;
    if (fcFanObj) fcFanObj.destroy();
    if (fmFanObj) fmFanObj.destroy();
    group = undefined;
    model.destroy();
    model = undefined;
  }
};