Anime.js
是一个js动画库插件,我们的动画以它为基础绘制的。
我们先去官方下载anime.mini.js
或anime.js
我用的next主题,添加到themes/next/source/js
下,然后在此文件夹再自己创建特效文件click.js
,代码如下:
jsfunction updateCoords(e) {
pointerX = (e.clientX || e.touches[0].clientX) - canvasEl.getBoundingClientRect().left,
pointerY = e.clientY || e.touches[0].clientY - canvasEl.getBoundingClientRect().top
}
function setParticuleDirection(e) {
var t = anime.random(0, 360) * Math.PI / 180
, a = anime.random(50, 180)
, n = [-1, 1][anime.random(0, 1)] * a;
return {
x: e.x + n * Math.cos(t),
y: e.y + n * Math.sin(t)
}
}
function createParticule(e, t) {
var a = {};
return a.x = e,
a.y = t,
a.color = colors[anime.random(0, colors.length - 1)],
a.radius = anime.random(16, 32),
a.endPos = setParticuleDirection(a),
a.draw = function() {
ctx.beginPath(),
ctx.arc(a.x, a.y, a.radius, 0, 2 * Math.PI, !0),
ctx.fillStyle = a.color,
ctx.fill()
}
,
a
}
function createCircle(e, t) {
var a = {};
return a.x = e,
a.y = t,
a.color = "#F00",
a.radius = .1,
a.alpha = .5,
a.lineWidth = 6,
a.draw = function() {
ctx.globalAlpha = a.alpha,
ctx.beginPath(),
ctx.arc(a.x, a.y, a.radius, 0, 2 * Math.PI, !0),
ctx.lineWidth = a.lineWidth,
ctx.strokeStyle = a.color,
ctx.stroke(),
ctx.globalAlpha = 1
}
,
a
}
function renderParticule(e) {
for (var t = 0; t < e.animatables.length; t++)
e.animatables[t].target.draw()
}
function animateParticules(e, t) {
for (var a = createCircle(e, t), n = [], i = 0; i < numberOfParticules; i++)
n.push(createParticule(e, t));
anime.timeline().add({
targets: n,
x: function(e) {
return e.endPos.x
},
y: function(e) {
return e.endPos.y
},
radius: .1,
duration: anime.random(1200, 1800),
easing: "easeOutExpo",
update: renderParticule
}).add({
targets: a,
radius: anime.random(80, 160),
lineWidth: 0,
alpha: {
value: 0,
easing: "linear",
duration: anime.random(600, 800)
},
duration: anime.random(1200, 1800),
easing: "easeOutExpo",
update: renderParticule,
offset: 0
})
}
function debounce(fn, delay) {
var timer
return function () {
var context = this
var args = arguments
clearTimeout(timer)
timer = setTimeout(function () {
fn.apply(context, args)
}, delay)
}
}
var canvasEl = document.querySelector(".fireworks");
if (canvasEl) {
var ctx = canvasEl.getContext("2d")
, numberOfParticules = 30
, pointerX = 0
, pointerY = 0
, tap = "mousedown"
, colors = ["#FF1461", "#18FF92", "#5A87FF", "#FBF38C"]
, setCanvasSize = debounce(function() {
canvasEl.width = 2 * window.innerWidth,
canvasEl.height = 2 * window.innerHeight,
canvasEl.style.width = window.innerWidth + "px",
canvasEl.style.height = window.innerHeight + "px",
canvasEl.getContext("2d").scale(2, 2)
},500)
, render = anime({
duration: 1 / 0,
update: function() {
ctx.clearRect(0, 0, canvasEl.width, canvasEl.height)
}
});
document.addEventListener(tap, function(e) {
"sidebar" !== e.target.id && "toggle-sidebar" !== e.target.id && "A" !== e.target.nodeName && "IMG" !== e.target.nodeName && (render.play(),
updateCoords(e),
animateParticules(pointerX, pointerY))
}, !1),
setCanvasSize(),
window.addEventListener("resize", setCanvasSize, !1)
}
我们打开themes/next/layout/_layout.swig
,在<body>
中添加:
js{% if theme.click %}
<canvas class="click" style="position: fixed;left: 0;top: 0;z-index: 1; pointer-events: none;" ></canvas>
<script type="text/javascript" src="/js/click.js"></script>
<script type="text/javascript" src="/js/anime.min.js"></script>
{% endif %}
保存,并在主题配置文件下新增click=true
,即可开启特效。
效果就在本站- -。
本文作者:mereith
本文链接:
版权声明:本博客所有文章除特别声明外,均采用 BY-NC-SA 许可协议。转载请注明出处!