三维液体网格波动效果-html代码-BFW代码库

代码语言：html

所属分类：三维

下面为部分代码预览，完整代码请点击下载或在bfwstudio webide中打开

<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">

<style>
html, body {
  margin: 0;
}

canvas {
  display: block;
}
</style>

</head>
<body translate="no">
<canvas id="canvas"></canvas>

<script type="text/javascript" src="http://repo.bfw.wiki/bfwrepo/js/three.109.js"></script>
<script src='http://repo.bfw.wiki/bfwrepo/js/OrbitControls.js'></script>

<script >
function App() {
  const conf = {
    el: 'canvas',
    fov: 75,
    cameraZ: 100 };


  let renderer, scene, camera, cameraCtrl;
  let width, height, cx, cy, wWidth, wHeight;

  let ripple;
  let gridWWidth, gridWHeight;
  let gridWidth, gridHeight;

  const mouse = new THREE.Vector2();
  const mousePlane = new THREE.Plane(new THREE.Vector3(0, 0, 1), 0);
  const mousePosition = new THREE.Vector3();
  const raycaster = new THREE.Raycaster();
  let mouseOver = false;

  init();

  function init() {
    // const gl = renderer.getContext();
    // const floatTextures = gl.getExtension('OES_texture_float');
    // if (!floatTextures) {
    //   alert('no floating point texture support');
    //   return;
    // }

    renderer = new THREE.WebGLRenderer({ canvas: document.getElementById(conf.el), antialias: true });
    camera = new THREE.PerspectiveCamera(conf.fov);
    camera.position.z = conf.cameraZ;

    updateSize();
    window.addEventListener('resize', updateSize, false);

    // gridWHeight = wHeight - 20;
    // gridWWidth = gridWHeight;
    gridWHeight = wHeight;
    gridWWidth = wWidth;
    gridWidth = gridWWidth * width / wWidth;
    gridHeight = gridWHeight * height / wHeight;

    ripple = new RippleEffect(renderer, width, height);

    const getGridMP = function (e) {
      const v = new THREE.Vector3();
      camera.getWorldDirection(v);
      v.normalize();
      mouse.x = e.clientX / width * 2 - 1;
      mouse.y = -(e.clientY / height) * 2 + 1;
      raycaster.setFromCamera(mouse, camera);
      raycaster.ray.intersectPlane(mousePlane, mousePosition);
      return { x: 2 * mousePosition.x / gridWWidth, y: 2 * mousePosition.y / gridWHeight };
    };

    renderer.domElement.addEventListener('mousemove', e => {
      mouseOver = true;
      const gp = getGridMP(e);
      ripple.addDrop(gp.x, gp.y, 0.05, 0.1);
    });
    renderer.domElement.addEventListener('mouseleave', e => {mouseOver = false;});

    // renderer.domElement.addEventListener('mouseup', e => {
    //   const gp = getGridMP(e);
    //   ripple.addDrop(gp.x, gp.y, 0.2, -3.0);
    // });

    initScene();
    animate();
  }

  function initScene() {
    scene = new THREE.Scene();

    let pointLight1 = new THREE.PointLight(0xFFFF80);
    pointLight1.position.set(-wWidth / 2, wHeight / 2, 50);
    scene.add(pointLight1);

    let pointLight2 = new THREE.PointLight(0xde3578);
    pointLight2.position.set(wWidth / 2, wHeight / 2, 50);
    scene.add(pointLight2);

    let pointLight3 = new THREE.PointLight(0xFF4040);
    pointLight3.position.set(-wWidth / 2, -wHeight / 2, 50);
    scene.add(pointLight3);

    let pointLight4 = new THREE.PointLight(0x0247e5);
    pointLight4.position.set(wWidth / 2, -wHeight / 2, 50);
    scene.add(pointLight4);

    renderer.domElement.addEventListener('mouseup', e => {
      pointLight1.color = new THREE.Color(chroma.random().hex());
      pointLight2.color = new THREE.Color(chroma.random().hex());
      pointLight3.color = new THREE.Color(chroma.random().hex());
      pointLight4.color = new THREE.Color(chroma.random().hex());
    });

    const material = new THREE.MeshStandardMaterial({ color: 0xffffff, side: THREE.DoubleSide, metalness: 0.5, roughness: 0.5, onBeforeCompile: shader => {
        shader.uniforms.hmap = { value: ripple.hMap.texture };
        shader.vertexShader = "uniform sampler2D hmap;\n" + shader.vertexShader;
        const token = '#include <begin_vertex>';
        const customTransform = `
        vec3 transformed = vec3(position);
        vec4 info = texture2D(hmap, uv);
        vNormal = vec3(info.b, sqrt(1.0 - dot(info.ba, info.ba)), info.a).xzy;
        transformed.z = 20. * info.r;
      `;
        shader.vertexShader = shader.vertexShader.replace(token, customTransform);
      } });

    let nx = Math.round(gridWidth / 5),ny = Math.round(gridHeight / 40);
    let dx = gridWWidth / nx,dy = gridWHeight / ny;
    for (let j = 0; j <= ny; j++) {
      const geometry = new THREE.BufferGeometry();
      const positions = [],uvs = [];
      const y = -gridWHeight / 2 + j * dy;
      for (let i = 0; i <= nx; i++) {
        positions.push(-gridWWidth / 2 + i * dx, y, 0);
        uvs.push(i / nx, j / ny);
      }
      geometry.setAttribute('position', new THREE.Float32BufferAttribute(positions, 3));
      geometry.setAttribute('uv', new THREE.Float32BufferAttribute(uvs, 2));
      geometry.computeBoundingSphere();
      scene.add(new THREE.Line(geometry, material));
    }

    nx = Math.round(gridWidth / 40);ny = Math.round(gridHeight / 5);
    dx = gridWWidth / nx;dy = gridWHeight / ny;
    for (let i = 0; i <= nx; i++) {
      const geometry = new THREE.BufferGeometry();
      const positions = [],uvs = [];
      const x = -gridWWidth / 2 + i * dx;
      for (let j = 0; j <= ny; j++) {
        positions.push(x, -gridWHeight / 2 + j * dy, 0);
        uvs.push(i / nx, j / ny);
      }
      geometry.setAttribute('position', new THREE.Float32BufferAttribute(positions, 3));
      geometry.setAttribute('uv', new THREE.Float32BufferAttribute(uvs, 2));
      geometry.computeBoundingSphere();
      scene.add(new THREE.Line(geometry, material));
    }
    camera.position.set(0, -gridWHeight / 2, 40);
    camera.lookAt(new THREE.Vector3(0, -gridWHeight / 6, 0));

    cameraCtrl = new THREE.OrbitControls(camera, renderer.domElement);
    cameraCtrl.enableDamping = true;
    cameraCtrl.dampingFactor = 0.1;
    cameraCtrl.rotateSpeed = 0.5;
  }

  function animate() {
    if (!mouseOver) {
      const time = Date.now() * 0.001;
      const x = Math.cos(time) * 0.2;
      const y = Math.sin(time) * 0.2;
      ripple.addDrop(x, y, 0.05, -0.04);
    }

    ripple.update();
    renderer.render(scene, camera);
    requestAnimationFrame(animate);
  }

  function updateSize() {
    width = window.innerWidth;cx = width / 2;
    height = window.innerHeight;cy = height.........完整代码请登录后点击上方下载按钮下载查看