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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,122 @@ | ||
| <template> | ||
| <div class="nice-particle"> | ||
| <canvas id="niceCanvas" class="nice-canvas"></canvas> | ||
| </div> | ||
| </template> | ||
|
|
||
| <script> | ||
| import $device from '@system.device' | ||
| import $app from '@system.app' | ||
| const appInfo = $app.getInfo() | ||
|
|
||
| export default { | ||
| // 页面级组件的数据模型，影响传入数据的覆盖机制：private内定义的属性不允许被覆盖 | ||
| private: { | ||
| }, | ||
|
|
||
| public: { | ||
| title: appInfo.name, | ||
| icon: appInfo.icon, | ||
| mCanvas: null, | ||
| mContext: null, | ||
| mParticleNum: 20, | ||
| mParticleIndex: 0, | ||
| mParticles: {}, | ||
| mWidth: 800, | ||
| mHeight: 300 | ||
| }, | ||
|
|
||
| onInit () { | ||
| }, | ||
|
|
||
| onReady () { | ||
| setTimeout(() => { | ||
| this.startNiceDraw() | ||
| }, 1000) | ||
| }, | ||
|
|
||
| onShow () { | ||
| }, | ||
|
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||
| createParticle () { | ||
| const that = {} | ||
| that.posX = this.mWidth / 2; // position X | ||
| that.posY = this.mHeight / 8; // position Y | ||
| that.vx = Math.random() * 10 - 5; // velocity X | ||
| that.vy = Math.random() * 10 - 5; // velocity Y | ||
| that.width = 1; // particle width | ||
| that.height = Math.random() * 6 - 3; // particle height | ||
|
|
||
| this.mParticleIndex++ | ||
| this.mParticles[this.mParticleIndex] = that | ||
| that.id = this.mParticleIndex | ||
|
|
||
| that.life = 0; | ||
| that.death = 140; | ||
|
|
||
| // random color | ||
| that.colors = [ | ||
| "rgba(100, 100, 100," + (Math.random() + .5) + ")", | ||
| "rgba(52, 152, 200," + (Math.random() + .5) + ")", | ||
| "rgba(41, 128, 250," + (Math.random() + .5) + ")"]; | ||
| that.color = that.colors[Math.floor(Math.random() * 3)]; | ||
| }, | ||
|
|
||
| drawParticleCanvas(target) { | ||
| const gravity = 0.7 | ||
| target.posX += target.vx; | ||
| target.posY += target.vy; | ||
|
|
||
| target.life++; | ||
|
|
||
| if (target.life >= target.death) { | ||
| delete this.mParticles[target.id]; | ||
| } | ||
| if (target.posY > (this.mCanvas.height - 5)) { | ||
| target.vx *= 0.8; | ||
| target.vy *= -0.5; | ||
| target.posY = (this.mCanvas.height - 5); | ||
| } | ||
|
|
||
| target.vy += gravity; | ||
|
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||
| this.mContext.fillStyle = target.color; | ||
| this.mContext.fillRect(target.posX, target.posY, target.width, target.height); | ||
| }, | ||
|
|
||
| startNiceDraw() { | ||
| this.mCanvas = this.$element('niceCanvas') | ||
| this.mContext = this.mCanvas.getContext("2d") | ||
| // this.mCanvas.width = $device.screenWidth || 800 | ||
| // this.mCanvas.height = $device.screenHeight || 300 | ||
| this.mContext.fillRect(0, 0, this.mWidth, this.mHeight); | ||
| setInterval(() => { | ||
| this.mContext.fillStyle = "rgba(0, 0, 0, 0.8)"; | ||
| this.mContext.fillRect(0, 0, this.mWidth, this.mHeight); | ||
|
|
||
| for(let i = 0; i < this.mParticleNum; i++){ | ||
| this.createParticle() | ||
| } | ||
|
|
||
| for(let i in this.mParticles){ | ||
| this.drawParticleCanvas(this.mParticles[i]) | ||
| } | ||
| }, 1000) | ||
| } | ||
| } | ||
| </script> | ||
|
|
||
| <style lang="less"> | ||
| @import './../assets/styles/style.less'; | ||
| .nice-particle { | ||
| .flex-box-mixins(column, center, center); | ||
| width: 100%; | ||
| height: 300px; | ||
| background-color: rgba(0,0,0,0.4); | ||
| .nice-canvas { | ||
| width: 100%; | ||
| height: 300px; | ||
| /* background-color: rgba(0,222,0,0.4); */ | ||
| } | ||
| } | ||
| </style> |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,142 @@ | ||
| <template> | ||
| <div class="nice-particle"> | ||
| <canvas id="waterCanvas" class="water-canvas"></canvas> | ||
| </div> | ||
| </template> | ||
|
|
||
| <script> | ||
| import { $util } from './../helper' | ||
| let tim, bai, a, b, c, s, p, r, x, y, z, x1, y1, max, p2, han, h, pt, hei; | ||
| const colorRandomList = [ | ||
| [87, 209, 201, 0.3], | ||
| [221, 10, 53, 0.3], | ||
| [66, 33, 142, 0.3], | ||
| [43, 187, 216, 0.3], | ||
| [92,242,232, 0.3], | ||
| [135,226,147, 0.3], | ||
| [0, 255, 0, 0.3], | ||
| [255, 0, 0, 0.3], | ||
| [245, 223, 101, 0.3], | ||
| [17, 141, 240, 0.3], | ||
| [31, 138, 255, 0.3] | ||
| ] | ||
| export default { | ||
| // 页面级组件的数据模型，影响传入数据的覆盖机制：private内定义的属性不允许被覆盖; | ||
| protected: { | ||
| mCanvas: null, | ||
| mContext: null, | ||
| mWidth: 800, | ||
| mHeight: 300, | ||
| randomIndex: 0 | ||
| }, | ||
|
|
||
| onInit () { | ||
| this.randomIndex = $util.getRandomInt(0, 10) | ||
| }, | ||
|
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||
| onReady () { | ||
| setTimeout(() => { | ||
| this.startNiceDraw() | ||
| }, 10) | ||
| }, | ||
|
|
||
| onShow () { | ||
| }, | ||
|
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||
| startNiceDraw () { | ||
| this.mCanvas = this.$element('waterCanvas') | ||
| this.mContext =this.mCanvas.getContext('2d'); | ||
| this.mCanvas.width = 800; | ||
| this.mCanvas.height = 400; | ||
| setInterval(() => { | ||
| this.drawParticleCanvas() | ||
| }, 60) | ||
| }, | ||
|
|
||
| drawParticleCanvas() { | ||
| this.mContext.globalCompositeOperation = "source-over"; | ||
| this.mContext.fillStyle = "rgb(0, 0, 0)"; | ||
| this.mContext.fillRect(0, 0, this.mCanvas.width, this.mCanvas.height); | ||
| this.mContext.globalCompositeOperation = "lighter"; | ||
| tim = new Date().getTime() / 10; | ||
| const colorStr = colorRandomList[this.randomIndex].join(',') | ||
| this.mContext.strokeStyle = this.mContext.fillStyle = `hsla(${colorStr})`; | ||
|
|
||
| bai = 0.6 + Math.sin(tim / 5) * 0.2; | ||
| hei = 0.9 + Math.sin(tim / 100) * 0.3; | ||
|
|
||
| pt = []; | ||
| for (c = 0; c < 180; c++) { | ||
| s = (c + 1) / 180; | ||
| han = Math.cos(s * Math.PI / 2); | ||
| h = Math.sin(s * Math.PI / 2); | ||
| s = 1 - s; | ||
| p = []; | ||
| max = (100 * han) | 0; | ||
| r = 0; | ||
| for (a = 0; a < max; a++) { | ||
| x = Math.cos(r) * han; | ||
| y = Math.sin(r) * han; | ||
| z = this.nami(r, s); | ||
| x -= z * s; | ||
| p.push([x, y, hei + z * s + h]); | ||
| r += Math.PI * 2 / max; | ||
| } | ||
| pt.push(p); | ||
| } | ||
| for (c = 0; c < 100; c++) { | ||
| s = (c + 1) / 100; | ||
| p = []; | ||
| max = 100 * s; | ||
| r = 0; | ||
| for (a = 0; a < max; a++) { | ||
| x = Math.cos(r) * s; | ||
| y = Math.sin(r) * s; | ||
| z = this.nami(r, s); | ||
| x -= z * s; | ||
| p.push([x, y, hei + z * s]); | ||
| r += Math.PI * 2 / max; | ||
| } | ||
| pt.push(p); | ||
| } | ||
| for (c = 0; c < pt.length; c++) { | ||
| p = pt[c]; | ||
| p2 = []; | ||
| for (a = 0; a < p.length; a++) { | ||
| x = p[a][0]; | ||
| y = p[a][1]; | ||
| z = p[a][2]; | ||
| b = Math.pow(1.5, y / 2); | ||
| x1 = x * b * 150 + 200; | ||
| y1 = z * b * 200 - hei * 200 + 150; | ||
| p2.push([x1, y1]); | ||
| } | ||
| this.mContext.beginPath(); | ||
| for (a = 0; a < p2.length; a++) this.mContext.lineTo(p2[a][0], p2[a][1]); | ||
| this.mContext.closePath(); | ||
| this.mContext.stroke(); | ||
| } | ||
| // requestAnimationFrame(this.drawParticleCanvas) | ||
| }, | ||
| nami(r, s) { | ||
| var a = Math.sin(r * 2 - tim / 13 + s * 13) / 20 + Math.sin(r * 5 - tim / 17 + s * 13) / 20 + Math.sin(r * 7 - tim / 19 + s * 13) / 40; | ||
| return a * bai; | ||
| } | ||
| } | ||
| </script> | ||
|
|
||
| <style lang="less"> | ||
| @import './../assets/styles/style.less'; | ||
| .nice-particle { | ||
| .flex-box-mixins(column, center, center); | ||
| width: 100%; | ||
| height: 369px; | ||
| background-color: @black; | ||
| .water-canvas { | ||
| background-color: @black; | ||
| width: 400px; | ||
| height: 369px; | ||
| } | ||
| } | ||
| </style> | ||
|
|
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