vue页面添加动态粒子、星空效果

在此处记录下使用过的两种方式:

第一种:

使用 vue-particles 

vue导入组件

npm install vue-particles --save-dev

在main.js引入(也可以单独在对应模块引入)

import Vue from 'vue'
import VueParticles from 'vue-particles'
Vue.use(VueParticles)

在背景div前添加代码

<vue-particles
      color="#dedede"
      :particleOpacity="0.7"
      :particlesNumber="40"
      shapeType="star"
      :particleSize="4"
      linesColor="#FFFFFF"
      :linesWidth="2"
      :lineLinked="true"
      :lineOpacity="0.4"
      :linesDistance="150"
      :moveSpeed="3"
      :hoverEffect="true"
      hoverMode="grab"
      :clickEffect="true"
      clickMode="push"
      class="cash"
    >
    </vue-particles>

注意设置下样式

.cash {
    position:fixed;
    top:180px;
    width:100%;
  }

动画实现完成

效果:

 

 

 有个问题:就是我网站做了针对爬虫的phantomjs预渲染,会报错 

TypeError: undefined is not an object (evaluating 'r[n].call')

我也不知道是什么原因,只有换一种动画了 唉

第二种:

使用starts-nest.js

将js文件引入我们项目

/*https://blog.csdn.net/black_pl/article/details/80244327*/
var num = 200;
var w = window.innerWidth;
var h = window.innerHeight;
var max = 100;
var _x = 0;
var _y = 0;
var _z = 150;
var dtr = function(d) {
  return d * Math.PI / 180;
};

var rnd = function() {
  return Math.sin(Math.floor(Math.random() * 360) * Math.PI / 180);
};
var dist = function(p1, p2, p3) {
  return Math.sqrt(Math.pow(p2.x - p1.x, 2) + Math.pow(p2.y - p1.y, 2) + Math.pow(p2.z - p1.z, 2));
};

var cam = {
  obj: {
    x: _x,
    y: _y,
    z: _z
  },
  dest: {
    x: 0,
    y: 0,
    z: 1
  },
  dist: {
    x: 0,
    y: 0,
    z: 200
  },
  ang: {
    cplane: 0,
    splane: 0,
    ctheta: 0,
    stheta: 0
  },
  zoom: 1,
  disp: {
    x: w / 2,
    y: h / 2,
    z: 0
  },
  upd: function() {
    cam.dist.x = cam.dest.x - cam.obj.x;
    cam.dist.y = cam.dest.y - cam.obj.y;
    cam.dist.z = cam.dest.z - cam.obj.z;
    cam.ang.cplane = -cam.dist.z / Math.sqrt(cam.dist.x * cam.dist.x + cam.dist.z * cam.dist.z);
    cam.ang.splane = cam.dist.x / Math.sqrt(cam.dist.x * cam.dist.x + cam.dist.z * cam.dist.z);
    cam.ang.ctheta = Math.sqrt(cam.dist.x * cam.dist.x + cam.dist.z * cam.dist.z) / Math.sqrt(cam.dist.x * cam.dist.x + cam.dist.y * cam.dist.y + cam.dist.z * cam.dist.z);
    cam.ang.stheta = -cam.dist.y / Math.sqrt(cam.dist.x * cam.dist.x + cam.dist.y * cam.dist.y + cam.dist.z * cam.dist.z);
  }
};

var trans = {
  parts: {
    sz: function(p, sz) {
      return {
        x: p.x * sz.x,
        y: p.y * sz.y,
        z: p.z * sz.z
      };
    },
    rot: {
      x: function(p, rot) {
        return {
          x: p.x,
          y: p.y * Math.cos(dtr(rot.x)) - p.z * Math.sin(dtr(rot.x)),
          z: p.y * Math.sin(dtr(rot.x)) + p.z * Math.cos(dtr(rot.x))
        };
      },
      y: function(p, rot) {
        return {
          x: p.x * Math.cos(dtr(rot.y)) + p.z * Math.sin(dtr(rot.y)),
          y: p.y,
          z: -p.x * Math.sin(dtr(rot.y)) + p.z * Math.cos(dtr(rot.y))
        };
      },
      z: function(p, rot) {
        return {
          x: p.x * Math.cos(dtr(rot.z)) - p.y * Math.sin(dtr(rot.z)),
          y: p.x * Math.sin(dtr(rot.z)) + p.y * Math.cos(dtr(rot.z)),
          z: p.z
        };
      }
    },
    pos: function(p, pos) {
      return {
        x: p.x + pos.x,
        y: p.y + pos.y,
        z: p.z + pos.z
      };
    }
  },
  pov: {
    plane: function(p) {
      return {
        x: p.x * cam.ang.cplane + p.z * cam.ang.splane,
        y: p.y,
        z: p.x * -cam.ang.splane + p.z * cam.ang.cplane
      };
    },
    theta: function(p) {
      return {
        x: p.x,
        y: p.y * cam.ang.ctheta - p.z * cam.ang.stheta,
        z: p.y * cam.ang.stheta + p.z * cam.ang.ctheta
      };
    },
    set: function(p) {
      return {
        x: p.x - cam.obj.x,
        y: p.y - cam.obj.y,
        z: p.z - cam.obj.z
      };
    }
  },
  persp: function(p) {
    return {
      x: p.x * cam.dist.z / p.z * cam.zoom,
      y: p.y * cam.dist.z / p.z * cam.zoom,
      z: p.z * cam.zoom,
      p: cam.dist.z / p.z
    };
  },
  disp: function(p, disp) {
    return {
      x: p.x + disp.x,
      y: -p.y + disp.y,
      z: p.z + disp.z,
      p: p.p
    };
  },
  steps: function(_obj_, sz, rot, pos, disp) {
    var _args = trans.parts.sz(_obj_, sz);
    _args = trans.parts.rot.x(_args, rot);
    _args = trans.parts.rot.y(_args, rot);
    _args = trans.parts.rot.z(_args, rot);
    _args = trans.parts.pos(_args, pos);
    _args = trans.pov.plane(_args);
    _args = trans.pov.theta(_args);
    _args = trans.pov.set(_args);
    _args = trans.persp(_args);
    _args = trans.disp(_args, disp);
    return _args;
  }
};

function stars_nest() {
  "use strict";
  var threeD = function(param) {
    this.transIn = {};
    this.transOut = {};
    this.transIn.vtx = (param.vtx);
    this.transIn.sz = (param.sz);
    this.transIn.rot = (param.rot);
    this.transIn.pos = (param.pos);
  };

  threeD.prototype.vupd = function() {
    this.transOut = trans.steps(

      this.transIn.vtx,
      this.transIn.sz,
      this.transIn.rot,
      this.transIn.pos,
      cam.disp
    );
  };

  var Build = function() {
    this.vel = 0.04;
    this.lim = 360;
    this.diff = 200;
    this.initPos = 100;
    this.toX = _x;
    this.toY = _y;
    this.go();
  };

  Build.prototype.go = function() {
    this.canvas = document.getElementById("canv");
    this.canvas.width = window.innerWidth;
    this.canvas.height = window.innerHeight;
    this.$ = canv.getContext("2d");
    this.$.globalCompositeOperation = 'source-over';
    this.varr = [];
    this.dist = [];
    this.calc = [];

    for (var i = 0, len = num; i < len; i++) {
      this.add();
    }

    this.rotObj = {
      x: 0,
      y: 0,
      z: 0
    };
    this.objSz = {
      x: w / 5,
      y: h / 5,
      z: w / 5
    };
  };

  Build.prototype.add = function() {
    this.varr.push(new threeD({
      vtx: {
        x: rnd(),
        y: rnd(),
        z: rnd()
      },
      sz: {
        x: 0,
        y: 0,
        z: 0
      },
      rot: {
        x: 20,
        y: -20,
        z: 0
      },
      pos: {
        x: this.diff * Math.sin(360 * Math.random() * Math.PI / 180),
        y: this.diff * Math.sin(360 * Math.random() * Math.PI / 180),
        z: this.diff * Math.sin(360 * Math.random() * Math.PI / 180)
      }
    }));
    this.calc.push({
      x: 360 * Math.random(),
      y: 360 * Math.random(),
      z: 360 * Math.random()
    });
  };

  Build.prototype.upd = function() {
    cam.obj.x += (this.toX - cam.obj.x) * 0.05;
    cam.obj.y += (this.toY - cam.obj.y) * 0.05;
  };

  Build.prototype.draw = function() {
    this.$.clearRect(0, 0, this.canvas.width, this.canvas.height);
    cam.upd();
    this.rotObj.x += 0.1;
    this.rotObj.y += 0.1;
    this.rotObj.z += 0.1;

    for (var i = 0; i < this.varr.length; i++) {
      for (var val in this.calc[i]) {
        if (this.calc[i].hasOwnProperty(val)) {
          this.calc[i][val] += this.vel;
          if (this.calc[i][val] > this.lim) this.calc[i][val] = 0;
        }
      }

      this.varr[i].transIn.pos = {
        x: this.diff * Math.cos(this.calc[i].x * Math.PI / 180),
        y: this.diff * Math.sin(this.calc[i].y * Math.PI / 180),
        z: this.diff * Math.sin(this.calc[i].z * Math.PI / 180)
      };
      this.varr[i].transIn.rot = this.rotObj;
      this.varr[i].transIn.sz = this.objSz;
      this.varr[i].vupd();
      if (this.varr[i].transOut.p < 0) continue;
      var g = this.$.createRadialGradient(this.varr[i].transOut.x, this.varr[i].transOut.y, this.varr[i].transOut.p, this.varr[i].transOut.x, this.varr[i].transOut.y, this.varr[i].transOut.p * 2);
      this.$.globalCompositeOperation = 'lighter';
      g.addColorStop(0, 'hsla(255, 255%, 255%, 1)');
      g.addColorStop(.5, 'hsla(' + (i + 2) + ',85%, 40%,1)');
      g.addColorStop(1, 'hsla(' + (i) + ',85%, 40%,.5)');
      this.$.fillStyle = g;
      this.$.beginPath();
      this.$.arc(this.varr[i].transOut.x, this.varr[i].transOut.y, this.varr[i].transOut.p * 2, 0, Math.PI * 2, false);
      this.$.fill();
      this.$.closePath();
    }
  };
  Build.prototype.anim = function() {
    window.requestAnimationFrame = (function() {
      return window.requestAnimationFrame ||
        function(callback, element) {
          window.setTimeout(callback, 1000 / 60);
        };
    })();
    var anim = function() {
      this.upd();
      this.draw();
      window.requestAnimationFrame(anim);
    }.bind(this);
    window.requestAnimationFrame(anim);
  };

  Build.prototype.run = function() {
    this.anim();

    window.addEventListener('mousemove', function(e) {
      this.toX = (e.clientX - this.canvas.width / 2) * -0.8;
      this.toY = (e.clientY - this.canvas.height / 2) * 0.8;
    }.bind(this));
    window.addEventListener('touchmove', function(e) {
      e.preventDefault();
      this.toX = (e.touches[0].clientX - this.canvas.width / 2) * -0.8;
      this.toY = (e.touches[0].clientY - this.canvas.height / 2) * 0.8;
    }.bind(this));
    window.addEventListener('mousedown', function(e) {
      for (var i = 0; i < 100; i++) {
        this.add();
      }
    }.bind(this));
    window.addEventListener('touchstart', function(e) {
      e.preventDefault();
      for (var i = 0; i < 100; i++) {
        this.add();
      }
    }.bind(this));

  };
  var app = new Build();
  app.run();
  window.addEventListener('resize', function() {
    //alert(w);
    var mycanvas = document.getElementById("canv");
    w = window.innerWidth;
    h = window.innerHeight;

    mycanvas.setAttribute("width",w);
    mycanvas.setAttribute("height",h);
  }, false);
}

export {
  stars_nest
}

html使用代码 

<canvas class="cash" id="canv"></canvas>

 

 vue中引入并执行方法stars_nest();

<script>

  import {stars_nest} from '../../static/lqbz/stars-nest'

  export default {
    name: 'Home',
    data () {
      return {
      }
    },
    mounted(){//****在这里绑定监听器
      stars_nest();

    },
    methods: {


    }

  }
</script>

调整下样式

  .cash {
    position:fixed;
    /*top:180px;*/
    left: 0px;
    width:100%;
  }

效果如下

 

posted @ 2020-09-11 11:39  官萧何  阅读(501)  评论(0编辑  收藏