js:
//index.jsvar app = getApp()var winHeight = 0var winWidth = 0Page({ data: { //背景图片,现在没有 img:'/pages/image/123.png', //确定左边距距离,上边距距离,厕所title,头像 dataArr:[{'left':200,'top':100,'title':'我家厕所最好','img':'/pages/image/1.png'}, {'left':20,'top':400,'title':'amis的小屋','img':'/pages/image/2.png'}, {'left':540,'top':440,'title':'老丁的宝盆','img':'/pages/image/3.png'}, {'left':240,'top':800,'title':'雪姐专用坑','img':'/pages/image/4.png'}] }, //进页面后获取数据 onLoad: function () { console.log('onLoad') var that = this //调用应用实例的方法获取全局数据 app.getUserInfo(function(userInfo){ console.log(userInfo) //更新数据 that.setData({ userInfo:userInfo }) }) //获取数据 wx.getSystemInfo({ success: function(res) { console.log(res) winHeight = res.windowHeight; winWidth = res.windowWidth; } }) // 使用 wx.createContext 获取绘图上下文 context var context = wx.createContext() context.arc(winWidth/2, winHeight/2, 50, 0, 2 * Math.PI, true) context.arc(winWidth/2, winHeight/2, 100, 0, 2 * Math.PI, true) context.arc(winWidth/2, winHeight/2, 150, 0, 2 * Math.PI, true) context.arc(winWidth/2, winHeight/2, 200, 0, 2 * Math.PI, true) context.arc(winWidth/2, winHeight/2, 250, 0, 2 * Math.PI, true) context.arc(winWidth/2, winHeight/2, 300, 0, 2 * Math.PI, true) context.setStrokeStyle('red') context.setLineWidth(1) context.stroke() // 调用 wx.drawCanvas,通过 canvasId 指定在哪张画布上绘制,通过 actions 指定绘制行为 wx.drawCanvas({ canvasId: 'radar', actions: context.getActions() // 获取绘图动作数组 }) }, onShareAppMessage: function() { // 用户点击右上角分享 return { title: '厕所雷达', // 分享标题 desc: '厕所找的快,排的才痛快', // 分享描述 path: 'path' // 分享路径 } }})wxml: wxss:/**index.wxss**/page{ background: black; height: 100%;}canvas{ width: 100%; height: 100%;}.userinfo { position:absolute; top: 561rpx; left:311rpx; width: 128rpx; height: 128rpx; border-radius: 50%;}.toiletView{ position:absolute; width: 180rpx; height: 180rpx;}.toiletView-image{ position:absolute; left: 13px; top: 0px; width: 128rpx; height: 128rpx; border-radius: 50%;}.toiletView-text{ position:absolute; bottom: 10rpx; font-size: 30rpx; color: orangered; width: 180rpx; text-align: center;}
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