0


炫酷的流动爱心最近很火 来吧 代码已奉上

哈喽,大家好,我是木易巷!

爱情,是每个人都在追求的东西。身为一个IT行业人士,我也会追求爱情,我也会像心爱的人表达感情,只是我所表达的方式与他人有所不同。我的主要战场在计算机上,所以我就想到了用计算机来表达感情,在网页上做爱心,还是会动的爱心给她~

这次给大家带来炫酷的流动爱心,有三种效果,大家自行领取~

第一种效果图:

代码部分

代码如下仅供参考,可以直接拿去复制粘贴!

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML>
 <HEAD>
  <TITLE> New Document </TITLE>
  <META NAME="Generator" CONTENT="EditPlus">
  <META NAME="Author" CONTENT="">
  <META NAME="Keywords" CONTENT="">
  <META NAME="Description" CONTENT="">
  <style>
  html, body {
  height: 100%;
  padding: 0;
  margin: 0;
  background: #000;
}
canvas {
  position: absolute;
  width: 100%;
  height: 100%;
}
  </style>
 </HEAD>

 <BODY>
  <canvas id="pinkboard"></canvas>
  <script>
  /*
 * Settings
 */
var settings = {
  particles: {
    length:   500, // maximum amount of particles
    duration:   2, // particle duration in sec
    velocity: 100, // particle velocity in pixels/sec
    effect: -0.75, // play with this for a nice effect
    size:      30, // particle size in pixels
  },
};

/*
 * RequestAnimationFrame polyfill by Erik Möller
 */
(function(){var b=0;var c=["ms","moz","webkit","o"];for(var a=0;a<c.length&&!window.requestAnimationFrame;++a){window.requestAnimationFrame=window[c[a]+"RequestAnimationFrame"];window.cancelAnimationFrame=window[c[a]+"CancelAnimationFrame"]||window[c[a]+"CancelRequestAnimationFrame"]}if(!window.requestAnimationFrame){window.requestAnimationFrame=function(h,e){var d=new Date().getTime();var f=Math.max(0,16-(d-b));var g=window.setTimeout(function(){h(d+f)},f);b=d+f;return g}}if(!window.cancelAnimationFrame){window.cancelAnimationFrame=function(d){clearTimeout(d)}}}());

/*
 * Point class
 */
var Point = (function() {
  function Point(x, y) {
    this.x = (typeof x !== 'undefined') ? x : 0;
    this.y = (typeof y !== 'undefined') ? y : 0;
  }
  Point.prototype.clone = function() {
    return new Point(this.x, this.y);
  };
  Point.prototype.length = function(length) {
    if (typeof length == 'undefined')
      return Math.sqrt(this.x * this.x + this.y * this.y);
    this.normalize();
    this.x *= length;
    this.y *= length;
    return this;
  };
  Point.prototype.normalize = function() {
    var length = this.length();
    this.x /= length;
    this.y /= length;
    return this;
  };
  return Point;
})();

/*
 * Particle class
 */
var Particle = (function() {
  function Particle() {
    this.position = new Point();
    this.velocity = new Point();
    this.acceleration = new Point();
    this.age = 0;
  }
  Particle.prototype.initialize = function(x, y, dx, dy) {
    this.position.x = x;
    this.position.y = y;
    this.velocity.x = dx;
    this.velocity.y = dy;
    this.acceleration.x = dx * settings.particles.effect;
    this.acceleration.y = dy * settings.particles.effect;
    this.age = 0;
  };
  Particle.prototype.update = function(deltaTime) {
    this.position.x += this.velocity.x * deltaTime;
    this.position.y += this.velocity.y * deltaTime;
    this.velocity.x += this.acceleration.x * deltaTime;
    this.velocity.y += this.acceleration.y * deltaTime;
    this.age += deltaTime;
  };
  Particle.prototype.draw = function(context, image) {
    function ease(t) {
      return (--t) * t * t + 1;
    }
    var size = image.width * ease(this.age / settings.particles.duration);
    context.globalAlpha = 1 - this.age / settings.particles.duration;
    context.drawImage(image, this.position.x - size / 2, this.position.y - size / 2, size, size);
  };
  return Particle;
})();

/*
 * ParticlePool class
 */
var ParticlePool = (function() {
  var particles,
      firstActive = 0,
      firstFree   = 0,
      duration    = settings.particles.duration;
  
  function ParticlePool(length) {
    // create and populate particle pool
    particles = new Array(length);
    for (var i = 0; i < particles.length; i++)
      particles[i] = new Particle();
  }
  ParticlePool.prototype.add = function(x, y, dx, dy) {
    particles[firstFree].initialize(x, y, dx, dy);
    
    // handle circular queue
    firstFree++;
    if (firstFree   == particles.length) firstFree   = 0;
    if (firstActive == firstFree       ) firstActive++;
    if (firstActive == particles.length) firstActive = 0;
  };
  ParticlePool.prototype.update = function(deltaTime) {
    var i;
    
    // update active particles
    if (firstActive < firstFree) {
      for (i = firstActive; i < firstFree; i++)
        particles[i].update(deltaTime);
    }
    if (firstFree < firstActive) {
      for (i = firstActive; i < particles.length; i++)
        particles[i].update(deltaTime);
      for (i = 0; i < firstFree; i++)
        particles[i].update(deltaTime);
    }
    
    // remove inactive particles
    while (particles[firstActive].age >= duration && firstActive != firstFree) {
      firstActive++;
      if (firstActive == particles.length) firstActive = 0;
    }
    
    
  };
  ParticlePool.prototype.draw = function(context, image) {
    // draw active particles
    if (firstActive < firstFree) {
      for (i = firstActive; i < firstFree; i++)
        particles[i].draw(context, image);
    }
    if (firstFree < firstActive) {
      for (i = firstActive; i < particles.length; i++)
        particles[i].draw(context, image);
      for (i = 0; i < firstFree; i++)
        particles[i].draw(context, image);
    }
  };
  return ParticlePool;
})();

/*
 * Putting it all together
 */
(function(canvas) {
  var context = canvas.getContext('2d'),
      particles = new ParticlePool(settings.particles.length),
      particleRate = settings.particles.length / settings.particles.duration, // particles/sec
      time;
  
  // get point on heart with -PI <= t <= PI
  function pointOnHeart(t) {
    return new Point(
      160 * Math.pow(Math.sin(t), 3),
      130 * Math.cos(t) - 50 * Math.cos(2 * t) - 20 * Math.cos(3 * t) - 10 * Math.cos(4 * t) + 25
    );
  }
  
  // creating the particle image using a dummy canvas
  var image = (function() {
    var canvas  = document.createElement('canvas'),
        context = canvas.getContext('2d');
    canvas.width  = settings.particles.size;
    canvas.height = settings.particles.size;
    // helper function to create the path
    function to(t) {
      var point = pointOnHeart(t);
      point.x = settings.particles.size / 2 + point.x * settings.particles.size / 350;
      point.y = settings.particles.size / 2 - point.y * settings.particles.size / 350;
      return point;
    }
    // create the path
    context.beginPath();
    var t = -Math.PI;
    var point = to(t);
    context.moveTo(point.x, point.y);
    while (t < Math.PI) {
      t += 0.01; // baby steps!
      point = to(t);
      context.lineTo(point.x, point.y);
    }
    context.closePath();
    // create the fill
    context.fillStyle = '#ea80b0';
    context.fill();
    // create the image
    var image = new Image();
    image.src = canvas.toDataURL();
    return image;
  })();
  
  // render that thing!
  function render() {
    // next animation frame
    requestAnimationFrame(render);
    
    // update time
    var newTime   = new Date().getTime() / 1000,
        deltaTime = newTime - (time || newTime);
    time = newTime;
    
    // clear canvas
    context.clearRect(0, 0, canvas.width, canvas.height);
    
    // create new particles
    var amount = particleRate * deltaTime;
    for (var i = 0; i < amount; i++) {
      var pos = pointOnHeart(Math.PI - 2 * Math.PI * Math.random());
      var dir = pos.clone().length(settings.particles.velocity);
      particles.add(canvas.width / 2 + pos.x, canvas.height / 2 - pos.y, dir.x, -dir.y);
    }
    
    // update and draw particles
    particles.update(deltaTime);
    particles.draw(context, image);
  }
  
  // handle (re-)sizing of the canvas
  function onResize() {
    canvas.width  = canvas.clientWidth;
    canvas.height = canvas.clientHeight;
  }
  window.onresize = onResize;
  
  // delay rendering bootstrap
  setTimeout(function() {
    onResize();
    render();
  }, 10);
})(document.getElementById('pinkboard'));
  </script>
 </BODY>
</HTML>

第二种效果图(有弹幕 ):

代码部分

代码如下仅供参考,可以直接拿去复制粘贴!

<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>给王总的大爱心</title>
    <style>
        html,
        body {
            height: 100%;
            padding: 0;
            margin: 0;
            background: #000;
        }

        canvas {
            position: absolute;
            width: 100%;
            height: 100%;
        }

        .down {
            position: absolute;
            top: 50%;
        }
    </style>
</head>

<body>
    <canvas id="pinkboard"></canvas>
    <font size="6" color="pink">
        <marquee direction="down" scrollamount=5 class="down"></marquee>
        <marquee direction="left" scrollamount=5>爱琦琦</marquee>
        <marquee direction="right" scrollamount=5>爱宝贝</marquee>
    </font>
        <font size="6" color="pink">
        <marquee direction="left" scrollamount=5>爱老婆</marquee>
        <marquee direction="right" scrollamount=5>爱琦琦</marquee>
    </font>
        <font size="6" color="pink">
        <marquee direction="left" scrollamount=5>爱宝贝</marquee>
        <marquee direction="right" scrollamount=5>爱老婆</marquee>
    </font>
        <font size="6" color="pink">
        <marquee direction="left" scrollamount=5>爱老婆</marquee>
        <marquee direction="right" scrollamount=5>爱琦琦</marquee>
    </font>
        <font size="6" color="pink">
        <marquee direction="left" scrollamount=5>爱宝贝</marquee>
        <marquee direction="right" scrollamount=5>爱老婆</marquee>
    </font>
        <font size="6" color="pink">
        <marquee direction="left" scrollamount=5>爱老婆</marquee>
        <marquee direction="right" scrollamount=5>爱琦琦</marquee>
    </font>
        <font size="6" color="pink">
        <marquee direction="left" scrollamount=5>爱宝贝</marquee>
        <marquee direction="right" scrollamount=5>爱老婆</marquee>
    </font>
    <script>
        var settings = {
            particles: {
                length: 500,
                duration: 2,
                velocity: 100,
                effect: -0.75,
                size: 30,
            },
        };
        (function () { var b = 0; var c = ["ms", "moz", "webkit", "o"]; for (var a = 0; a < c.length && !window.requestAnimationFrame; ++a) { window.requestAnimationFrame = window[c[a] + "RequestAnimationFrame"]; window.cancelAnimationFrame = window[c[a] + "CancelAnimationFrame"] || window[c[a] + "CancelRequestAnimationFrame"] } if (!window.requestAnimationFrame) { window.requestAnimationFrame = function (h, e) { var d = new Date().getTime(); var f = Math.max(0, 16 - (d - b)); var g = window.setTimeout(function () { h(d + f) }, f); b = d + f; return g } } if (!window.cancelAnimationFrame) { window.cancelAnimationFrame = function (d) { clearTimeout(d) } } }());
        var Point = (function () {
            undefined
            function Point(x, y) {
                undefined
                this.x = (typeof x !== 'undefined') ? x : 0;
                this.y = (typeof y !== 'undefined') ? y : 0;
            }
            Point.prototype.clone = function () {
                undefined
                return new Point(this.x, this.y);
            };
            Point.prototype.length = function (length) {
                undefined
                if (typeof length == 'undefined')
                    return Math.sqrt(this.x * this.x + this.y * this.y);
                this.normalize();
                this.x *= length;
                this.y *= length;
                return this;
            };
            Point.prototype.normalize = function () {
                undefined
                var length = this.length();
                this.x /= length;
                this.y /= length;
                return this;
            };
            return Point;
        })();
        var Particle = (function () {
            undefined
            function Particle() {
                undefined
                this.position = new Point();
                this.velocity = new Point();
                this.acceleration = new Point();
                this.age = 0;
            }
            Particle.prototype.initialize = function (x, y, dx, dy) {
                undefined
                this.position.x = x;
                this.position.y = y;
                this.velocity.x = dx;
                this.velocity.y = dy;
                this.acceleration.x = dx * settings.particles.effect;
                this.acceleration.y = dy * settings.particles.effect;
                this.age = 0;
            };
            Particle.prototype.update = function (deltaTime) {
                undefined
                this.position.x += this.velocity.x * deltaTime;
                this.position.y += this.velocity.y * deltaTime;
                this.velocity.x += this.acceleration.x * deltaTime;
                this.velocity.y += this.acceleration.y * deltaTime;
                this.age += deltaTime;
            };
            Particle.prototype.draw = function (context, image) {
                undefined
                function ease(t) {
                    undefined
                    return (--t) * t * t + 1;
                }
                var size = image.width * ease(this.age / settings.particles.duration);
                context.globalAlpha = 1 - this.age / settings.particles.duration;
                context.drawImage(image, this.position.x - size / 2, this.position.y - size / 2, size, size);
            };
            return Particle;
        })();
        var ParticlePool = (function () {
            undefined
            var particles,
                firstActive = 0,
                firstFree = 0,
                duration = settings.particles.duration;
            function ParticlePool(length) {
                undefined
                particles = new Array(length);
                for (var i = 0; i < particles.length; i++)
                    particles[i] = new Particle();
            }
            ParticlePool.prototype.add = function (x, y, dx, dy) {
                undefined
                particles[firstFree].initialize(x, y, dx, dy);
                firstFree++;
                if (firstFree == particles.length) firstFree = 0;
                if (firstActive == firstFree) firstActive++;
                if (firstActive == particles.length) firstActive = 0;
            };
            ParticlePool.prototype.update = function (deltaTime) {
                undefined
                var i;
                if (firstActive < firstFree) {
                    undefined
                    for (i = firstActive; i < firstFree; i++)
                        particles[i].update(deltaTime);
                }
                if (firstFree < firstActive) {
                    undefined
                    for (i = firstActive; i < particles.length; i++)
                        particles[i].update(deltaTime);
                    for (i = 0; i < firstFree; i++)
                        particles[i].update(deltaTime);
                }
                while (particles[firstActive].age >= duration && firstActive != firstFree) {
                    undefined
                    firstActive++;
                    if (firstActive == particles.length) firstActive = 0;
                }
            };
            ParticlePool.prototype.draw = function (context, image) {
                undefined
                if (firstActive < firstFree) {
                    undefined
                    for (i = firstActive; i < firstFree; i++)
                        particles[i].draw(context, image);
                }
                if (firstFree < firstActive) {
                    undefined
                    for (i = firstActive; i < particles.length; i++)
                        particles[i].draw(context, image);
                    for (i = 0; i < firstFree; i++)
                        particles[i].draw(context, image);
                }
            };
            return ParticlePool;
        })();
        (function (canvas) {
            undefined
            var context = canvas.getContext('2d'),
                particles = new ParticlePool(settings.particles.length),
                particleRate = settings.particles.length / settings.particles.duration,
                time;
            function pointOnHeart(t) {
                undefined
                return new Point(
                    160 * Math.pow(Math.sin(t), 3),
                    130 * Math.cos(t) - 50 * Math.cos(2 * t) - 20 * Math.cos(3 * t) - 10 * Math.cos(4 * t) + 25
                );
            }
            var image = (function () {
                undefined
                var canvas = document.createElement('canvas'),
                    context = canvas.getContext('2d');
                canvas.width = settings.particles.size;
                canvas.height = settings.particles.size;
                function to(t) {
                    undefined
                    var point = pointOnHeart(t);
                    point.x = settings.particles.size / 2 + point.x * settings.particles.size / 350;
                    point.y = settings.particles.size / 2 - point.y * settings.particles.size / 350;
                    return point;
                }
                context.beginPath();
                var t = -Math.PI;
                var point = to(t);
                context.moveTo(point.x, point.y);
                while (t < Math.PI) {
                    undefined
                    t += 0.01;
                    point = to(t);
                    context.lineTo(point.x, point.y);
                }
                context.closePath();
                context.fillStyle = '#ea80b0';
                context.fill();
                var image = new Image();
                image.src = canvas.toDataURL();
                return image;
            })();
            function render() {
                undefined
                requestAnimationFrame(render);
                var newTime = new Date().getTime() / 1000,
                    deltaTime = newTime - (time || newTime);
                time = newTime;
                context.clearRect(0, 0, canvas.width, canvas.height);
                var amount = particleRate * deltaTime;
                for (var i = 0; i < amount; i++) {
                    undefined
                    var pos = pointOnHeart(Math.PI - 2 * Math.PI * Math.random());
                    var dir = pos.clone().length(settings.particles.velocity);
                    particles.add(canvas.width / 2 + pos.x, canvas.height / 2 - pos.y, dir.x, -dir.y);
                }
                particles.update(deltaTime);
                particles.draw(context, image);
            }
            function onResize() {
                undefined
                canvas.width = canvas.clientWidth;
                canvas.height = canvas.clientHeight;
            }
            window.onresize = onResize;
            setTimeout(function () {
                undefined
                onResize();
                render();
            }, 10);
        })(document.getElementById('pinkboard'));
    </script>
</body>

</html>

第三种效果图:

HTML部分:

<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <title>流动爱心表白</title>
    <link rel="stylesheet" href="css/style.css" />
  </head>
 
  <body>
    <!-- 绘画爱心 -->
    <canvas id="canvas" width="1400" height="600"></canvas>
    <!-- js部分 -->
    <script src="js/script.js"></script>
  </body>
</html>

JS部分:

var canvas = document.getElementById("canvas");
canvas.width = window.innerWidth;
canvas.height = window.innerHeight;
// Initialize the GL context
var gl = canvas.getContext('webgl');
if (!gl) {
    console.error("Unable to initialize WebGL.");
}
//Time step
var dt = 0.015;
//Time
var time = 0.0;
//************** Shader sources **************
var vertexSource = `
attribute vec2 position;
void main() {
    gl_Position = vec4(position, 0.0, 1.0);
}
`;
 
var fragmentSource = `
precision highp float;
uniform float width;
uniform float height;
vec2 resolution = vec2(width, height);
uniform float time;
#define POINT_COUNT 8
vec2 points[POINT_COUNT];
const float speed = -0.5;
const float len = 0.25;
float intensity = 0.9;
float radius = 0.015;
//https://www.shadertoy.com/view/MlKcDD
//Signed distance to a quadratic bezier
float sdBezier(vec2 pos, vec2 A, vec2 B, vec2 C){    
    vec2 a = B - A;
    vec2 b = A - 2.0*B + C;
    vec2 c = a * 2.0;
    vec2 d = A - pos;
    float kk = 1.0 / dot(b,b);
    float kx = kk * dot(a,b);
    float ky = kk * (2.0*dot(a,a)+dot(d,b)) / 3.0;
    float kz = kk * dot(d,a);      
    float res = 0.0;
    float p = ky - kx*kx;
    float p3 = p*p*p;
    float q = kx*(2.0*kx*kx - 3.0*ky) + kz;
    float h = q*q + 4.0*p3;
    if(h >= 0.0){ 
        h = sqrt(h);
        vec2 x = (vec2(h, -h) - q) / 2.0;
        vec2 uv = sign(x)*pow(abs(x), vec2(1.0/3.0));
        float t = uv.x + uv.y - kx;
        t = clamp( t, 0.0, 1.0 );
        // 1 root
        vec2 qos = d + (c + b*t)*t;
        res = length(qos);
    }else{
        float z = sqrt(-p);
        float v = acos( q/(p*z*2.0) ) / 3.0;
        float m = cos(v);
        float n = sin(v)*1.732050808;
        vec3 t = vec3(m + m, -n - m, n - m) * z - kx;
        t = clamp( t, 0.0, 1.0 );
        // 3 roots
        vec2 qos = d + (c + b*t.x)*t.x;
        float dis = dot(qos,qos);
        
        res = dis;
        qos = d + (c + b*t.y)*t.y;
        dis = dot(qos,qos);
        res = min(res,dis);
        
        qos = d + (c + b*t.z)*t.z;
        dis = dot(qos,qos);
        res = min(res,dis);
        res = sqrt( res );
    }
    
    return res;
}
//http://mathworld.wolfram.com/HeartCurve.html
vec2 getHeartPosition(float t){
    return vec2(16.0 * sin(t) * sin(t) * sin(t),
                            -(13.0 * cos(t) - 5.0 * cos(2.0*t)
                            - 2.0 * cos(3.0*t) - cos(4.0*t)));
}
//https://www.shadertoy.com/view/3s3GDn
float getGlow(float dist, float radius, float intensity){
    return pow(radius/dist, intensity);
}
float getSegment(float t, vec2 pos, float offset, float scale){
    for(int i = 0; i < POINT_COUNT; i++){
        points[i] = getHeartPosition(offset + float(i)*len + fract(speed * t) * 6.28);
    }
    
    vec2 c = (points[0] + points[1]) / 2.0;
    vec2 c_prev;
    float dist = 10000.0;
    
    for(int i = 0; i < POINT_COUNT-1; i++){
        //https://tinyurl.com/y2htbwkm
        c_prev = c;
        c = (points[i] + points[i+1]) / 2.0;
        dist = min(dist, sdBezier(pos, scale * c_prev, scale * points[i], scale * c));
    }
    return max(0.0, dist);
}
void main(){
    vec2 uv = gl_FragCoord.xy/resolution.xy;
    float widthHeightRatio = resolution.x/resolution.y;
    vec2 centre = vec2(0.5, 0.5);
    vec2 pos = centre - uv;
    pos.y /= widthHeightRatio;
    //Shift upwards to centre heart
    pos.y += 0.02;
    float scale = 0.000015 * height;
    
    float t = time;
    
    //Get first segment
    float dist = getSegment(t, pos, 0.0, scale);
    float glow = getGlow(dist, radius, intensity);
    
    vec3 col = vec3(0.0);
    
    //White core
    col += 10.0*vec3(smoothstep(0.003, 0.001, dist));
    //Pink glow
    col += glow * vec3(0.94,0.14,0.4);
    
    //Get second segment
    dist = getSegment(t, pos, 3.4, scale);
    glow = getGlow(dist, radius, intensity);
    
    //White core
    col += 10.0*vec3(smoothstep(0.003, 0.001, dist));
    //Blue glow
    col += glow * vec3(0.2,0.6,1.0);
        
    //Tone mapping
    col = 1.0 - exp(-col);
    //Output to screen
     gl_FragColor = vec4(col,1.0);
}
`;
 
//************** Utility functions **************
 
window.addEventListener('resize', onWindowResize, false);
 
function onWindowResize() {
    canvas.width = window.innerWidth;
    canvas.height = window.innerHeight;
    gl.viewport(0, 0, canvas.width, canvas.height);
    gl.uniform1f(widthHandle, window.innerWidth);
    gl.uniform1f(heightHandle, window.innerHeight);
}
 
 
//Compile shader and combine with source
function compileShader(shaderSource, shaderType) {
    var shader = gl.createShader(shaderType);
    gl.shaderSource(shader, shaderSource);
    gl.compileShader(shader);
    if (!gl.getShaderParameter(shader, gl.COMPILE_STATUS)) {
        throw "Shader compile failed with: " + gl.getShaderInfoLog(shader);
    }
    return shader;
}
 
//From https://codepen.io/jlfwong/pen/GqmroZ
//Utility to complain loudly if we fail to find the attribute/uniform
function getAttribLocation(program, name) {
    var attributeLocation = gl.getAttribLocation(program, name);
    if (attributeLocation === -1) {
        throw 'Cannot find attribute ' + name + '.';
    }
    return attributeLocation;
}
 
function getUniformLocation(program, name) {
    var attributeLocation = gl.getUniformLocation(program, name);
    if (attributeLocation === -1) {
        throw 'Cannot find uniform ' + name + '.';
    }
    return attributeLocation;
}
 
//************** Create shaders **************
 
//Create vertex and fragment shaders
var vertexShader = compileShader(vertexSource, gl.VERTEX_SHADER);
var fragmentShader = compileShader(fragmentSource, gl.FRAGMENT_SHADER);
 
//Create shader programs
var program = gl.createProgram();
gl.attachShader(program, vertexShader);
gl.attachShader(program, fragmentShader);
gl.linkProgram(program);
 
gl.useProgram(program);
 
//Set up rectangle covering entire canvas 
var vertexData = new Float32Array([-1.0, 1.0, // top left
    -1.0, -1.0, // bottom left
    1.0, 1.0, // top right
    1.0, -1.0, // bottom right
]);
 
//Create vertex buffer
var vertexDataBuffer = gl.createBuffer();
gl.bindBuffer(gl.ARRAY_BUFFER, vertexDataBuffer);
gl.bufferData(gl.ARRAY_BUFFER, vertexData, gl.STATIC_DRAW);
 
// Layout of our data in the vertex buffer
var positionHandle = getAttribLocation(program, 'position');
 
gl.enableVertexAttribArray(positionHandle);
gl.vertexAttribPointer(positionHandle,
    2, // position is a vec2 (2 values per component)
    gl.FLOAT, // each component is a float
    false, // don't normalize values
    2 * 4, // two 4 byte float components per vertex (32 bit float is 4 bytes)
    0 // how many bytes inside the buffer to start from
);
 
//Set uniform handle
var timeHandle = getUniformLocation(program, 'time');
var widthHandle = getUniformLocation(program, 'width');
var heightHandle = getUniformLocation(program, 'height');
 
gl.uniform1f(widthHandle, window.innerWidth);
gl.uniform1f(heightHandle, window.innerHeight);
 
function draw() {
    //Update time
    time += dt;
 
    //Send uniforms to program
    gl.uniform1f(timeHandle, time);
    //Draw a triangle strip connecting vertices 0-4
    gl.drawArrays(gl.TRIANGLE_STRIP, 0, 4);
 
    requestAnimationFrame(draw);
}
 
draw();

CSS部分:

body {
    background-color: #000;
    margin: 0;
    overflow: hidden;
    background-repeat: no-repeat;
}

好啦,本次分享就到这里,祝大家开心~


本文转载自: https://blog.csdn.net/qq_44794321/article/details/127719490
版权归原作者 木易巷 所有, 如有侵权,请联系我们删除。

“炫酷的流动爱心最近很火 来吧 代码已奉上”的评论:

还没有评论