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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,307 @@ | ||
| /* eslint-disable */ | ||
| import React from 'react' | ||
|
|
||
| export const FlutteringRibbon = () => { | ||
| React.useEffect(() => { | ||
| createFlutteringRibbon() | ||
| }, []) | ||
| } | ||
|
|
||
| /** | ||
| * 创建连接点 | ||
| * @param config | ||
| */ | ||
| function createFlutteringRibbon() { | ||
| 'object' == typeof window && | ||
| (window.Ribbons = (function () { | ||
| const t = window, | ||
| i = document.body, | ||
| n = document.documentElement | ||
| var o = function () { | ||
| if (1 === arguments.length) { | ||
| if (Array.isArray(arguments[0])) { | ||
| const t = Math.round(o(0, arguments[0].length - 1)) | ||
| return arguments[0][t] | ||
| } | ||
| return o(0, arguments[0]) | ||
| } | ||
| return 2 === arguments.length | ||
| ? Math.random() * (arguments[1] - arguments[0]) + arguments[0] | ||
| : 0 | ||
| } | ||
| const s = function (o) { | ||
| const s = Math.max( | ||
| 0, | ||
| t.innerWidth || n.clientWidth || i.clientWidth || 0 | ||
| ), | ||
| e = Math.max( | ||
| 0, | ||
| t.innerHeight || n.clientHeight || i.clientHeight || 0 | ||
| ) | ||
| return { | ||
| width: s, | ||
| height: e, | ||
| ratio: s / e, | ||
| centerx: s / 2, | ||
| centery: e / 2, | ||
| scrollx: | ||
| Math.max(0, t.pageXOffset || n.scrollLeft || i.scrollLeft || 0) - | ||
| (n.clientLeft || 0), | ||
| scrolly: | ||
| Math.max(0, t.pageYOffset || n.scrollTop || i.scrollTop || 0) - | ||
| (n.clientTop || 0) | ||
| } | ||
| }, | ||
| e = function (t, i) { | ||
| ;(this.x = 0), (this.y = 0), this.set(t, i) | ||
| } | ||
| e.prototype = { | ||
| constructor: e, | ||
| set: function (t, i) { | ||
| ;(this.x = t || 0), (this.y = i || 0) | ||
| }, | ||
| copy: function (t) { | ||
| return (this.x = t.x || 0), (this.y = t.y || 0), this | ||
| }, | ||
| multiply: function (t, i) { | ||
| return (this.x *= t || 1), (this.y *= i || 1), this | ||
| }, | ||
| divide: function (t, i) { | ||
| return (this.x /= t || 1), (this.y /= i || 1), this | ||
| }, | ||
| add: function (t, i) { | ||
| return (this.x += t || 0), (this.y += i || 0), this | ||
| }, | ||
| subtract: function (t, i) { | ||
| return (this.x -= t || 0), (this.y -= i || 0), this | ||
| }, | ||
| clampX: function (t, i) { | ||
| return (this.x = Math.max(t, Math.min(this.x, i))), this | ||
| }, | ||
| clampY: function (t, i) { | ||
| return (this.y = Math.max(t, Math.min(this.y, i))), this | ||
| }, | ||
| flipX: function () { | ||
| return (this.x *= -1), this | ||
| }, | ||
| flipY: function () { | ||
| return (this.y *= -1), this | ||
| } | ||
| } | ||
| const h = function (t) { | ||
| ;(this._canvas = null), | ||
| (this._context = null), | ||
| (this._sto = null), | ||
| (this._width = 0), | ||
| (this._height = 0), | ||
| (this._scroll = 0), | ||
| (this._ribbons = []), | ||
| (this._options = { | ||
| colorSaturation: '80%', | ||
| colorBrightness: '60%', | ||
| colorAlpha: 0.65, | ||
| colorCycleSpeed: 6, | ||
| verticalPosition: 'center', | ||
| horizontalSpeed: 150, | ||
| ribbonCount: 5, | ||
| strokeSize: 5, | ||
| parallaxAmount: -0.5, | ||
| animateSections: !0 | ||
| }), | ||
| (this._onDraw = this._onDraw.bind(this)), | ||
| (this._onResize = this._onResize.bind(this)), | ||
| (this._onScroll = this._onScroll.bind(this)), | ||
| this.setOptions(t), | ||
| this.init() | ||
| } | ||
| return ( | ||
| (h.prototype = { | ||
| constructor: h, | ||
| setOptions: function (t) { | ||
| if ('object' == typeof t) | ||
| for (const i in t) | ||
| t.hasOwnProperty(i) && (this._options[i] = t[i]) | ||
| }, | ||
| init: function () { | ||
| try { | ||
| ;(this._canvas = document.createElement('canvas')), | ||
| (this._canvas.style.display = 'block'), | ||
| (this._canvas.style.position = 'fixed'), | ||
| (this._canvas.style.margin = '0'), | ||
| (this._canvas.style.padding = '0'), | ||
| (this._canvas.style.border = '0'), | ||
| (this._canvas.style.outline = '0'), | ||
| (this._canvas.style.left = '0'), | ||
| (this._canvas.style.top = '0'), | ||
| (this._canvas.style.width = '100%'), | ||
| (this._canvas.style.height = '100%'), | ||
| (this._canvas.style['z-index'] = '0'), | ||
| this._onResize(), | ||
| (this._context = this._canvas.getContext('2d')), | ||
| this._context.clearRect(0, 0, this._width, this._height), | ||
| (this._context.globalAlpha = this._options.colorAlpha), | ||
| window.addEventListener('resize', this._onResize), | ||
| window.addEventListener('scroll', this._onScroll), | ||
| document.body.appendChild(this._canvas) | ||
| } catch (t) { | ||
| return void console.warn('Canvas Context Error: ' + t.toString()) | ||
| } | ||
| this._onDraw() | ||
| }, | ||
| addRibbon: function () { | ||
| const t = Math.round(o(1, 9)) > 5 ? 'right' : 'left' | ||
| let i = 1e3 | ||
| const n = 200, | ||
| s = 0 - n, | ||
| h = this._width + n | ||
| let a = 0, | ||
| r = 0 | ||
| const l = 'right' === t ? s : h | ||
| let c = Math.round(o(0, this._height)) | ||
| ;/^(top|min)$/i.test(this._options.verticalPosition) | ||
| ? (c = 0 + n) | ||
| : /^(middle|center)$/i.test(this._options.verticalPosition) | ||
| ? (c = this._height / 2) | ||
| : /^(bottom|max)$/i.test(this._options.verticalPosition) && | ||
| (c = this._height - n) | ||
| const p = [], | ||
| _ = new e(l, c), | ||
| d = new e(l, c) | ||
| let u = null, | ||
| b = Math.round(o(0, 360)), | ||
| f = 0 | ||
| for (; !(i <= 0); ) { | ||
| if ( | ||
| (i--, | ||
| (a = Math.round( | ||
| (1 * Math.random() - 0.2) * this._options.horizontalSpeed | ||
| )), | ||
| (r = Math.round( | ||
| (1 * Math.random() - 0.5) * (0.25 * this._height) | ||
| )), | ||
| (u = new e()), | ||
| u.copy(d), | ||
| 'right' === t) | ||
| ) { | ||
| if ((u.add(a, r), d.x >= h)) break | ||
| } else if ('left' === t && (u.subtract(a, r), d.x <= s)) break | ||
| p.push({ | ||
| point1: new e(_.x, _.y), | ||
| point2: new e(d.x, d.y), | ||
| point3: u, | ||
| color: b, | ||
| delay: f, | ||
| dir: t, | ||
| alpha: 0, | ||
| phase: 0 | ||
| }), | ||
| _.copy(d), | ||
| d.copy(u), | ||
| (f += 4), | ||
| (b += this._options.colorCycleSpeed) | ||
| } | ||
| this._ribbons.push(p) | ||
| }, | ||
| _drawRibbonSection: function (t) { | ||
| if (t) { | ||
| if (t.phase >= 1 && t.alpha <= 0) return !0 | ||
| if (t.delay <= 0) { | ||
| if ( | ||
| ((t.phase += 0.02), | ||
| (t.alpha = 1 * Math.sin(t.phase)), | ||
| (t.alpha = t.alpha <= 0 ? 0 : t.alpha), | ||
| (t.alpha = t.alpha >= 1 ? 1 : t.alpha), | ||
| this._options.animateSections) | ||
| ) { | ||
| const i = 0.1 * Math.sin(1 + (t.phase * Math.PI) / 2) | ||
| 'right' === t.dir | ||
| ? (t.point1.add(i, 0), | ||
| t.point2.add(i, 0), | ||
| t.point3.add(i, 0)) | ||
| : (t.point1.subtract(i, 0), | ||
| t.point2.subtract(i, 0), | ||
| t.point3.subtract(i, 0)), | ||
| t.point1.add(0, i), | ||
| t.point2.add(0, i), | ||
| t.point3.add(0, i) | ||
| } | ||
| } else t.delay -= 0.5 | ||
| const i = this._options.colorSaturation, | ||
| n = this._options.colorBrightness, | ||
| o = | ||
| 'hsla(' + | ||
| t.color + | ||
| ', ' + | ||
| i + | ||
| ', ' + | ||
| n + | ||
| ', ' + | ||
| t.alpha + | ||
| ' )' | ||
| this._context.save(), | ||
| 0 !== this._options.parallaxAmount && | ||
| this._context.translate( | ||
| 0, | ||
| this._scroll * this._options.parallaxAmount | ||
| ), | ||
| this._context.beginPath(), | ||
| this._context.moveTo(t.point1.x, t.point1.y), | ||
| this._context.lineTo(t.point2.x, t.point2.y), | ||
| this._context.lineTo(t.point3.x, t.point3.y), | ||
| (this._context.fillStyle = o), | ||
| this._context.fill(), | ||
| this._options.strokeSize > 0 && | ||
| ((this._context.lineWidth = this._options.strokeSize), | ||
| (this._context.strokeStyle = o), | ||
| (this._context.lineCap = 'round'), | ||
| this._context.stroke()), | ||
| this._context.restore() | ||
| } | ||
| return !1 | ||
| }, | ||
| _onDraw: function () { | ||
| for (let t = 0, i = this._ribbons.length; t < i; ++t) | ||
| this._ribbons[t] || this._ribbons.splice(t, 1) | ||
| this._context.clearRect(0, 0, this._width, this._height) | ||
| for (let t = 0; t < this._ribbons.length; ++t) { | ||
| const i = this._ribbons[t], | ||
| n = i.length | ||
| let o = 0 | ||
| for (let t = 0; t < n; ++t) this._drawRibbonSection(i[t]) && o++ | ||
| o >= n && (this._ribbons[t] = null) | ||
| } | ||
| this._ribbons.length < this._options.ribbonCount && | ||
| this.addRibbon(), | ||
| requestAnimationFrame(this._onDraw) | ||
| }, | ||
| _onResize: function (t) { | ||
| const i = s(t) | ||
| ;(this._width = i.width), | ||
| (this._height = i.height), | ||
| this._canvas && | ||
| ((this._canvas.width = this._width), | ||
| (this._canvas.height = this._height), | ||
| this._context && | ||
| (this._context.globalAlpha = this._options.colorAlpha)) | ||
| }, | ||
| _onScroll: function (t) { | ||
| const i = s(t) | ||
| this._scroll = i.scrolly | ||
| } | ||
| }), | ||
| h | ||
| ) | ||
| })()) | ||
| new Ribbons({ | ||
| colorSaturation: '60%', | ||
| colorBrightness: '50%', | ||
| colorAlpha: 0.5, | ||
| colorCycleSpeed: 5, | ||
| verticalPosition: 'random', | ||
| horizontalSpeed: 200, | ||
| ribbonCount: 3, | ||
| strokeSize: 0, | ||
| parallaxAmount: -0.2, | ||
| animateSections: !0 | ||
| }) | ||
| } |
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