three+gsap实现玫瑰加载过渡动画效果代码-html代码-BFW代码库

three+gsap实现玫瑰加载过渡动画效果代码

代码语言：html

所属分类：动画

代码描述：three+gsap实现玫瑰加载过渡动画效果代码

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">
<link type="text/css" rel="stylesheet" href="//repo.bfw.wiki/bfwrepo/css/reset.min.css">
<style>
    @import url("https://fonts.googleapis.com/css2?family=Cormorant:wght@500&display=swap");
body {
  overflow: hidden;
}

#webgl-canvas {
  position: fixed;
  z-index: -1;
}

.title {
  opacity: 0;
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  color: #fff;
  font-family: "Cormorant", serif;
  font-size: 8rem;
}
</style>

</head>
<body>

<canvas id="webgl-canvas"></canvas>
<h1 class="title">ROSE</h1>

<!-- vertexShader -->
<script id="js-vertex-shader" type="x-shader/x-vertex">
attribute vec3 position;
attribute vec2 uv;
varying vec2 vUv;

void main()	{
  vUv = uv;

  gl_Position = vec4(position, 1.0);
}
</script>

<!-- fragmentShader -->
<script id="js-fragment-shader" type="x-shader/x-fragment">
precision mediump float;

uniform sampler2D uTexture1;
uniform sampler2D uTexture2;
uniform sampler2D uDisp;
uniform vec2 uMeshsize;
uniform vec2 uTexturesize;
uniform float uAnimation;
varying vec2 vUv;
  
mat2 scale(vec2 _scale) {
  return mat2(_scale.x, 0.0, 0.0, _scale.y);
}

void main() {  
  vec2 ratio = vec2(
    min((uMeshsize.x / uMeshsize.y) / (uTexturesize.x / uTexturesize.y), 1.0),
    min((uMeshsize.y / uMeshsize.x) / (uTexturesize.y / uTexturesize.x), 1.0)
  );
  vec2 newUV = vec2(
    vUv.x * ratio.x + (1.0 - ratio.x) * 0.5,
    vUv.y * ratio.y + (1.0 - ratio.y) * 0.5
  );
  
  vec2 st = newUV;
  st -= vec2(0.5);
  st = scale(vec2(0.8 + (uAnimation * 0.2))) * st;
  st += vec2(0.5);
  
  vec2 ed = newUV;
  ed -= vec2(0.5);
  ed = scale(vec2(1.0 - (uAnimation * 0.06))) * ed;
  ed += vec2(0.5);
  
  vec4 img1 = texture2D(uTexture1, st);
  vec4 img2 = texture2D(uTexture2, ed);
  vec4 displace = texture2D(uDisp, newUV);
  
  float disp = smoothstep(0.0, displace.r, uAnimation);
  
  vec4 color = mix(img1, img2, disp);
  
  gl_FragColor = color;
}
</script>

<script type="text/javascript" src="//repo.bfw.wiki/bfwrepo/js/three.109.js"></script>
<script type="text/javascript" src="//repo.bfw.wiki/bfwrepo/js/gsap.3.5.2.js"></script>
<script>class Stage {
  constructor() {
    this.rendererParam = {
      width: window.innerWidth,
      height: window.innerHeight
    };

    this.cameraParam = {
      left: -1,
      right: 1,
      top: 1,
      bottom: 1,
      near: 0,
      far: -1
    };

    this.scene = null; // シーン
    this.camera = null; // カメラ
    this.renderer = null; // レンダラ
    this.geometry = null; // ジオメトリ
    this.material = null; // マテリアル
    this.mesh = null; // ボックスメッシュ

    this.isInitialized = false;
  }
  
  init() {
    this._setScene();
    this._setRender();
    this._setCamera();
    
    this.isInitialized = true;
  }
  
  _setScene() {
    this.scene = new THREE.Scene();
  }
  
  _setRender() {
    this.renderer = new THREE.WebGLRenderer({
      canvas: document.getElementById("webgl-canvas")
    });
    this.renderer.setPixelRatio(window.devicePixelRatio);
    this.renderer.setSize(this.rendererParam.width, this.rendererParam.height);
  }
  
  _setCamera() {
    if (!this.isInitialized) {
      this.camera = new THREE.OrthographicCamera(
        this.cameraParam.left,
        this.cameraParam.right,
        this.cameraParam.top,
        this.cam.........完整代码请登录后点击上方下载按钮下载查看