engine/examples/culling-mask.ts at feature/ui-init · singlecoder/engine · GitHub

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/**
 * @title Culling Mask
 * @category Camera
 * @thumbnail https://mdn.alipayobjects.com/merchant_appfe/afts/img/A*iln0RKi5dIkAAAAAAAAAAAAADiR2AQ/original
 */
import * as dat from "dat.gui";
import {
  DirectLight,
  Logger,
  WebGLEngine,
  Camera,
  Vector3,
  MeshRenderer,
  BlinnPhongMaterial,
  Color,
  Layer,
  PrimitiveMesh,
} from "@galacean/engine";

Logger.enable();
WebGLEngine.create({ canvas: "canvas" }).then((engine) => {
  engine.canvas.resizeByClientSize();
  const rootEntity = engine.sceneManager.activeScene.createRootEntity();

  // init camera
  const cameraEntity = rootEntity.createChild("camera");
  const camera = cameraEntity.addComponent(Camera);
  const pos = cameraEntity.transform.position;
  pos.set(10, 10, 10);
  cameraEntity.transform.position = pos;
  cameraEntity.transform.lookAt(new Vector3(0, 0, 0));

  const lightNode = rootEntity.createChild("Light");
  lightNode.transform.setRotation(-30, 0, 0);
  lightNode.addComponent(DirectLight);

  // init cube
  const cubeEntity = rootEntity.createChild("cube");
  const renderer = cubeEntity.addComponent(MeshRenderer);
  renderer.mesh = PrimitiveMesh.createCuboid(engine, 1, 1, 1);
  const material = new BlinnPhongMaterial(engine);
  material.baseColor = new Color(1, 0.25, 0.25, 1);
  renderer.setMaterial(material);

  engine.run();

  function addGUI() {
    const gui = new dat.GUI();
    const cameraFolder = gui.addFolder("camera cullingMask");
    cameraFolder.open();
    const constMap = {
      EveryThing: Layer.Everything,
      Layer1: Layer.Layer1,
      Layer2: Layer.Layer2,
      Layer3: Layer.Layer3,
    };
    const cameraController = cameraFolder.add(
      { cullingMask: "EveryThing" },
      "cullingMask",
      Object.keys(constMap)
    );
    cameraController.onChange((v) => {
      camera.cullingMask = constMap[v];
    });

    const boxFolder = gui.addFolder("box layer");
    boxFolder.open();
    const boxController = boxFolder.add(
      { layer: "EveryThing" },
      "layer",
      Object.keys(constMap)
    );
    boxController.onChange((v) => {
      renderer.entity.layer = constMap[v];
    });
  }

  addGUI();
});