canvas实现彩色波纹海浪滚滚动画效果代码-html代码-BFW代码库

canvas实现彩色波纹海浪滚滚动画效果代码

代码语言：html

所属分类：动画

代码描述：canvas实现彩色波纹海浪滚滚动画效果代码

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">
  

  
<style>
html, body {
  padding: 0px;
  margin: 0px;
  overflow: hidden;
}

canvas {
  width: 100%;
  height: 100%;
}
</style>




</head>

<body >
  <canvas></canvas>

<script id="fragment-shader" type="x-shader/x-fragment">
#ifdef GL_ES
  precision highp float;
#endif

uniform vec2 u_resolution;
uniform vec2 u_mouse;
uniform float u_time;
  
float repeat = u_resolution.x / 5.0;
float wibblyness = 10.0;

void main() {
      float test = mod(gl_FragCoord.x + (sin((gl_FragCoord.y / 20.0)) * wibblyness) + (u_time * 100.0) + (gl_FragCoord.y / 2.0), repeat) / repeat;
    float test2 = mod(gl_FragCoord.y - (sin((gl_FragCoord.x / 20.0)) * wibblyness) + (u_time * 100.0) - (gl_FragCoord.x / 2.0), repeat) / repeat;

    gl_FragColor = vec4(test,test2,1.0,1.0);
}
</script>

<script id="vertex-shader" type="x-shader/x-vertex">
attribute vec2 a_position;


void main() {
  gl_Position = vec4( a_position, 0, 1 );
}
</script>

  
      <script >
var canvas = document.querySelector('canvas');
var gl = canvas.getContext('webgl');
var width, height;
var mouseX = 0;
var mouseY = 0;
var startTime = new Date().getTime(); // Get start time for animating

// ----- Uniform ----- //

function Uniform(name, suffix) {
  this.name = name;
  this.suffix = suffix;
  this.location = gl.getUniformLocation(program, name);
}

Uniform.prototype.set = function (...values) {
  var method = 'uniform' + this.suffix;
  var args = [this.location].concat(values);
  gl[method].apply(gl, args);
};

// ----- Rect ----- //

function Rect(gl) {
  var buffer = gl.createBuffer();
  gl.bindBuffer(gl.ARRAY_BUFFER, buffer);
  gl.bufferData(gl.ARRAY_BUFFER, Rect.verts, gl.STATIC_DRAW);
}

Rect.verts = new Float32Array([
-1, -1,
1, -1,
-1, 1,
1, 1]);


Rect.prototype.render = function (gl) {
  gl.drawArrays(gl.TRIANGLE_STRIP, 0, 4);
};

// ----- init.........完整代码请登录后点击上方下载按钮下载查看