Particles.js基于Canvas画布创建粒子原子颗粒效果

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文章目录

Particles.js是一款基于html5 Canvas画布的轻量级粒子动画插件，可以设置粒子的形状、旋转、分布、颜色等属性，还可以动态添加粒子，效果非常炫酷，能和鼠标互动吸附或者是躲避鼠标指针。

技术分享

使用方法

1、该粒子动画库插件使用方法非常简单，首先要在页面中引入particles.js文件。

<script src="js/particles.js"></script>

2、在页面中使用一个div来作为放置粒子的容器。

<div id="particles-js"></div>

3、通过particlesJS.load()方法加载配置文件

particlesJS.load(‘particles-js‘, ‘assets/particles.json‘, function() {
  console.log(‘callback - particles.js config loaded‘);
});

4、编写particles.json配置文件

{
  "particles": {
    "number": {
      "value": 80,
      "density": {
        "enable": true,
        "value_area": 800
      }
    },
    "color": {
      "value": "#ffffff"
    },
    "shape": {
      "type": "circle",
      "stroke": {
        "width": 0,
        "color": "#000000"
      },
      "polygon": {
        "nb_sides": 5
      },
      "image": {
        "src": "img/github.svg",
        "width": 100,
        "height": 100
      }
    },
    "opacity": {
      "value": 0.5,
      "random": false,
      "anim": {
        "enable": false,
        "speed": 1,
        "opacity_min": 0.1,
        "sync": false
      }
    },
    "size": {
      "value": 10,
      "random": true,
      "anim": {
        "enable": false,
        "speed": 80,
        "size_min": 0.1,
        "sync": false
      }
    },
    "line_linked": {
      "enable": true,
      "distance": 300,
      "color": "#ffffff",
      "opacity": 0.4,
      "width": 2
    },
    "move": {
      "enable": true,
      "speed": 12,
      "direction": "none",
      "random": false,
      "straight": false,
      "out_mode": "out",
      "bounce": false,
      "attract": {
        "enable": false,
        "rotateX": 600,
        "rotateY": 1200
      }
    }
  },
  "interactivity": {
    "detect_on": "canvas",
    "events": {
      "onhover": {
        "enable": false,
        "mode": "repulse"
      },
      "onclick": {
        "enable": true,
        "mode": "push"
      },
      "resize": true
    },
    "modes": {
      "grab": {
        "distance": 800,
        "line_linked": {
          "opacity": 1
        }
      },
      "bubble": {
        "distance": 800,
        "size": 80,
        "duration": 2,
        "opacity": 0.8,
        "speed": 3
      },
      "repulse": {
        "distance": 400,
        "duration": 0.4
      },
      "push": {
        "particles_nb": 4
      },
      "remove": {
        "particles_nb": 2
      }
    }
  },
  "retina_detect": true
}

自定义参数

keyoption type / notesexample
particles.number.value number 40
particles.number.density.enable boolean true / false
particles.number.density.value_area number 800
particles.color.value HEX (string)
RGB (object)
HSL (object)
array selection (HEX)
random (string)		 "#b61924"
{r:182, g:25, b:36}
{h:356, s:76, l:41}
["#b61924", "#333333", "999999"]
"random"
particles.number.density.value_area number 800
particles.shape.type string
array selection		 "circle"
"edge"
"triangle"
"polygon"
"star"
"image"
["circle", "triangle", "image"]
particles.shape.stroke.width number 2
particles.shape.stroke.color HEX (string) "#222222"
particles.shape.polygon.nb_slides number 5
particles.shape.image.src path link
svg / png / gif / jpg		 "assets/img/yop.svg"
"http://mywebsite.com/assets/img/yop.png"
particles.shape.image.width number
(for aspect ratio)		 100
particles.shape.image.height number
(for aspect ratio)		 100
particles.opacity.value number (0 to 1) 0.75
particles.opacity.random boolean true / false
particles.opacity.anim.enable boolean true / false
particles.opacity.anim.speed number 3
particles.opacity.anim.opacity_min number (0 to 1) 0.25
particles.opacity.anim.sync boolean true / false
particles.size.value number 20
particles.size.random boolean true / false
particles.size.anim.enable boolean true / false
particles.size.anim.speed number 3
particles.size.anim.size_min number 0.25
particles.size.anim.sync boolean true / false
particles.line_linked.enable boolean true / false
particles.line_linked.distance number 150
particles.line_linked.color HEX (string) #ffffff
particles.line_linked.opacity number (0 to 1) 0.5
particles.line_linked.width number 1.5
particles.move.enable boolean true / false
particles.move.speed number 4
particles.move.direction string "none"
"top"
"top-right"
"right"
"bottom-right"
"bottom"
"bottom-left"
"left"
"top-left"
particles.move.random boolean true / false
particles.move.straight boolean true / false
particles.move.out_mode string
(out of canvas)		 "out"
"bounce"
particles.move.bounce boolean
(between particles)		 true / false
particles.move.attract.enable boolean true / false
particles.move.attract.rotateX number 3000
particles.move.attract.rotateY number 1500
interactivity.detect_on string "canvas", "window"
interactivity.events.onhover.enable boolean true / false
interactivity.events.onhover.mode string
array selection		 "grab"
"bubble"
"repulse"
["grab", "bubble"]
interactivity.events.onclick.enable boolean true / false
interactivity.events.onclick.mode string
array selection		 "push"
"remove"
"bubble"
"repulse"
["push", "repulse"]
interactivity.events.resize boolean true / false
interactivity.events.modes.grab.distance number 100
interactivity.events.modes.grab.line_linked.opacity number (0 to 1) 0.75
interactivity.events.modes.bubble.distance number 100
interactivity.events.modes.bubble.size number 40
interactivity.events.modes.bubble.duration number
(second)		 0.4
interactivity.events.modes.repulse.distance number 200
interactivity.events.modes.repulse.duration number
(second)		 1.2
interactivity.events.modes.push.particles_nb number 4
interactivity.events.modes.push.particles_nb number 4
retina_detect boolean true / false

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