webgl实现可调节参数的水泡液体点击拆分交互动画效果代码-html代码-BFW代码库

代码语言：html

所属分类：动画

代码描述：webgl实现可调节参数的水泡液体点击拆分交互动画效果代码，参数调节使用了lil-gui插件

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>
body, html {
    margin: 0;
    padding: 0;
    overflow: hidden;
}
body {
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

.btn {
    height: 370px;
    position: relative;
}
.btn canvas {
    display: block;
    height: 100%;
}
.btn button {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    z-index: 1;
    font-size: 20px;
    text-shadow: 0 0 3px #ffffff;
    padding: 20px;
    background: none;
    outline: none;
    border: none;
    cursor: pointer;
    font-weight: bold;
    opacity: .9;
}
.btn button:hover {
    color: deeppink;
}
.btn button:active {
    color: cyan;
}


.lil-gui {
    --width: 500px;
    max-width: 90%;
    --widget-height: 20px;
    font-size: 15px;
    --input-font-size: 15px;
    --padding: 10px;
    --spacing: 10px;
    --slider-knob-width: 5px;
    --background-color: rgba(5, 0, 15, .9);
    --widget-color: rgba(255, 255, 255, .3);
    --focus-color: rgba(255, 255, 255, .4);
    --hover-color: rgba(255, 255, 255, .5);
    --font-family: monospace;
    z-index: 1;
}
</style>


  
</head>

<body translate="no">
  <div class="btn">
    <canvas></canvas>
    <button>click me</button>
</div>

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

    varying vec2 vUv;
    attribute vec2 a_position;

    void main() {
        vUv = a_position;
        gl_Position = vec4(a_position, 0.0, 1.0);
    }
</script>


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

    varying vec2 vUv;
    uniform vec2 u_scale;
    uniform float u_time;
    uniform float u_extra_width;
    uniform float u_ratio;
    uniform float u_click_time;
    uniform float u_speed;
    uniform float u_size;
    uniform vec3 u_color;
    uniform vec3 u_mid_color;

    #define PI 3.14159265358979323846
    #define TWO_PI 6.28318530718
    #define DOTS_NUMBER 25.

    float rand(vec2 n) {
        return fract(cos(dot(n, vec2(12.9898, 4.1414))) * 43758.5453);
    }

    float get_power_shape(vec2 center) {
        float s = 1. - length(center);
        s = smoothstep(u_size, 1., s);
        return s;
    }

    void main() {

        vec2 uv = vUv;
        uv.x *= u_ratio;

        float time = .001 * u_speed * u_time;
        float click_time = 1. - .5 * pow(2.8 * (u_click_time - .5), 2.);

        float highlight = 0.;
        float shape = 0.;

        for (int i = 0; i < int(DOTS_NUMBER); i++) {
            vec2 c = vec2(0.);
            vec2 randomizer = vec2(rand(vec2(float(i), 0.)), rand(vec2(float(i))));

            // extra spacing on x-axis
            c.x += u_extra_width * 2. * u_ratio * ((float(i) + .5) / DOTS_NUMBER - .5);

            // time per dot
            float t = time;
            t *= (.5 + .5 * pow(randomizer.y, .2));
            t += TWO_PI * randomizer.y;

            // floating
            c.x += .4 * cos(.4 * t + randomizer.x * TWO_PI);
            c.y += max(.02, .2 * randomizer.x) * sin(t - cos(.5 * t));

            // splashing
            float dist = pow(randomizer.y, 1.5);
            float angle = float(i) / DOTS_NUMBER * TWO_PI;
            c.x += dist * cos(angle) * click_time;
            c.y += .8 * dist * sin(angle) * click_time;

            float s = get_power_shape(uv + c);
            shape += s;
            highlight += 10. * pow(s, 50.);
        }

        float contour = smoothstep(.45, .5, shape);
        vec3 color = mix(u_color, u_mid_color, smoothstep(0., 10., highlight));

        shape = smoothstep(.1, .7, shape);
        color = shape * color;

        gl_FragColor = vec4(color, contour);
    }
</script>
  
      <script type="module">
import GUI from "//repo.bfw.wiki/bfwrepo/js/lil-gui.esm.js";

const buttonWrapperEl = document.querySelector(".btn");
const buttonClickerEl = document.querySelector(".btn button");
const canvasEl = document.querySelector(".btn canvas");
const devicePixelRatio = Math.min(window.devicePixelRatio, 2);

const params = {
  clickTime: 0,
  clickDuration: .7,
  wasClicked: false,
  width: .2,
  ratio: 2,
  speed: 5,
  size: .65,
  color: [0.2392, 0.8392, 0.3608],
  midColor: [1.0, 0.9176, 0.0196] };


let startTime = null;

let uniforms;
const gl = initShader();
createControls();

window.addEventListener("resize", resizeCanvas);
resizeCanva.........完整代码请登录后点击上方下载按钮下载查看