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377 lines
8.3 KiB
377 lines
8.3 KiB
<template>
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<view class="box">
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<canvas class="radar-bg" :canvas-id="`cpbg${code}`" type="2d"></canvas>
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<canvas class="radar-fg" :canvas-id="`cpfg${code}`" type="2d"></canvas>
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<div
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v-for="(item, index) in score"
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:key="index"
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:class="['axis', `axis-${index}`]"
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>
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<div class="flex title">
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<div class="line"></div>
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<div class="label">{{ axis[index] }}</div>
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</div>
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<div class="flex desc">
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指数<text class="highlight">{{ item }}</text>分
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</div>
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</div>
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</view>
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</template>
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<script>
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export default {
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props: {
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score: {
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type: Array,
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default() {
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return []
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}
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}
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},
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data() {
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return {
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code: Math.floor(Math.random() * 100).toString(),
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axis: ['饮食', '运动', '心理', '体质', '作息']
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}
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},
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watch: {
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score: {
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handler(val) {
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console.log('watch score', val)
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this.$nextTick(() => {
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this.drawFg(val)
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})
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},
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deep: true
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},
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},
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mounted() {
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this.drawBg();
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},
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methods: {
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drawRing(ctx, x, y, startAngle, r) {
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let x0 = x + r * Math.cos(startAngle)
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let y0 = y - r * Math.sin(startAngle)
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let lineStartX = x0
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let lineStartY = y0
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let lineEndX = null
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let lineEndY = null
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ctx.beginPath(); //开始一个新的路径
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ctx.moveTo(lineStartX, lineStartY);
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for (let i = 1; i < 5; i++) {
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let angle = startAngle - Math.PI * 2 * i / 5
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lineEndX = x + r * Math.cos(angle)
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lineEndY = y - r * Math.sin(angle)
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ctx.lineTo(lineEndX, lineEndY);
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ctx.stroke();
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lineStartX = lineEndX
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lineStartY = lineEndY
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}
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lineEndX = x0
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lineEndY = y0
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ctx.moveTo(lineStartX, lineStartY);
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ctx.lineTo(lineEndX, lineEndY);
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ctx.stroke();
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ctx.closePath();
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},
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drawLine(ctx, x, y, startAngle, R, r) {
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let lines = new Array(5).fill(0).map(() => [{}, {}])
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let arr = [R, r]
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arr.forEach((len, index) => {
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for (let i = 0; i < 5; i++) {
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let angle = startAngle - Math.PI * 2 * i / 5
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lines[i][index].x = x + len * Math.cos(angle)
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lines[i][index].y = y - len * Math.sin(angle)
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}
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})
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lines.forEach(line => {
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const [point1, point2] = line
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ctx.beginPath(); //开始一个新的路径
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ctx.moveTo(point1.x, point1.y);
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ctx.lineTo(point2.x, point2.y);
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ctx.stroke();
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ctx.closePath();
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})
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},
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drawBg() {
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uni.createSelectorQuery().in(this)
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.select('.radar-bg')
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.fields({
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node: true,
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size: true
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})
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.exec(async (res) => {
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const canvas = res[0].node
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// Canvas 画布的实际绘制宽高
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const width = res[0].width
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const height = res[0].height
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//根据dpr调整
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const dpr = wx.getWindowInfo().pixelRatio
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canvas.width = width * dpr
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canvas.height = height * dpr
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let Ratio = width / 526
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// 渲染上下文
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const ctx = canvas.getContext('2d')
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ctx.scale(dpr, dpr)
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ctx.clearRect(0, 0, width, height)
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let x = width / 2
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let y = height / 2
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let startAngle = Math.PI / 2
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ctx.lineWidth = 2 * Ratio;
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ctx.save()
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ctx.lineWidth = 3 * Ratio;
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ctx.strokeStyle = '#DACEFE';
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ctx.shadowOffsetX = 0;
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ctx.shadowOffsetY = 0;
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ctx.shadowBlur = 6;
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ctx.shadowColor = "rgba(211, 210, 229, 0.6)";
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this.drawRing(ctx, x, y, startAngle, 132 * Ratio)
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ctx.fillStyle = '#F9F7FF'
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ctx.fill()
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ctx.restore()
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ctx.save()
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ctx.setLineDash([2]);
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ctx.strokeStyle = '#E1E0E6';
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let dividers = [100, 68, 36, 8]
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dividers.forEach(r => {
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this.drawRing(ctx, x, y, startAngle, r * Ratio)
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})
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ctx.restore()
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// ctx.setLineDash([]);
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ctx.strokeStyle = '#E1E0E6';
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this.drawLine(ctx, x, y, startAngle, 132 * Ratio, 8 * Ratio)
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})
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},
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drawFg(arr) {
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uni.createSelectorQuery().in(this)
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.select('.radar-fg')
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.fields({
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node: true,
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size: true
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})
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.exec(async (res) => {
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console.log('radar-fg', res)
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const canvas = res[0].node
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// Canvas 画布的实际绘制宽高
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const width = res[0].width
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const height = res[0].height
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//根据dpr调整
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const dpr = wx.getWindowInfo().pixelRatio
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canvas.width = width * dpr
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canvas.height = height * dpr
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let Ratio = width / 526
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// 渲染上下文
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const ctx = canvas.getContext('2d')
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ctx.scale(dpr, dpr)
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ctx.clearRect(0, 0, width, height)
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let x = width / 2
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let y = height / 2
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let R = 100 * Ratio
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console.log('R', R)
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let startAngle = Math.PI / 2
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ctx.lineWidth = 3 * Ratio;
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let gradient = ctx.createLinearGradient(x - R, y, x + R, y);
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gradient.addColorStop('0', '#7451DE');
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gradient.addColorStop('1.0', '#B1A4FF');
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ctx.strokeStyle = gradient;
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ctx.shadowOffsetX = 0;
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ctx.shadowOffsetY = 0;
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ctx.shadowBlur = 23.9;
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ctx.shadowColor = "rgba(99, 52, 238, 0.4)";
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let points = arr.map((score, i) => {
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let r = R * score / 100
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let angle = startAngle - Math.PI * 2 * i / 5
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return {
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x: x + r * Math.cos(angle),
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y: y - r * Math.sin(angle)
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}
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})
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let lineStartX = points[0].x
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let lineStartY = points[0].y
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let lineEndX = null
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let lineEndY = null
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ctx.beginPath(); //开始一个新的路径
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ctx.moveTo(lineStartX, lineStartY);
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for (let i = 1; i < 5; i++) {
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lineEndX = points[i].x
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lineEndY = points[i].y
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ctx.lineTo(lineEndX, lineEndY);
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ctx.stroke();
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lineStartX = lineEndX
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lineStartY = lineEndY
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}
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lineEndX = points[0].x
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lineEndY = points[0].y
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ctx.moveTo(lineStartX, lineStartY);
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ctx.lineTo(lineEndX, lineEndY);
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ctx.stroke();
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ctx.closePath();
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ctx.fillStyle = 'rgba(188, 167, 255, 0.2)'
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ctx.fill()
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})
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},
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},
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}
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</script>
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<style scoped lang="scss">
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$size: 526rpx;
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.box {
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position: relative;
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width: $size;
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height: $size;
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.radar-bg,
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.radar-fg {
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position: absolute;
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top: 0;
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left: 0;
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width: 100%;
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height: 100%;
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}
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}
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.axis {
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position: absolute;
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width: 128rpx;
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.title {
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justify-content: flex-start;
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}
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.line {
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width: 4rpx;
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height: 18rpx;
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border-radius: 2rpx;
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margin-right: 8rpx;
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}
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.label {
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font-family: PingFang SC;
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font-weight: 400;
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font-size: 24rpx;
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line-height: 1;
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color: #252545;
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}
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.desc {
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font-family: PingFang SC;
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font-weight: 400;
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font-size: 24rpx;
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line-height: 1;
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color: #8B8B8B;
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.highlight {
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margin: 0 8rpx;
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font-weight: 600;
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font-size: 32rpx;
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line-height: 1.4;
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color: #7451DE;
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}
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}
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&-0 {
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top: 54rpx;
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left: 232rpx;
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.title {
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padding-left: 11rpx;
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}
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.line {
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background: #ECB501;
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}
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}
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&-1 {
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top: 205rpx;
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right: 0;
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.line {
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background: #009CEF;
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}
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}
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&-2 {
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bottom: 66rpx;
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right: 74rpx;
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.line {
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background: #DA629F;
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}
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}
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&-3 {
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bottom: 66rpx;
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left: 76rpx;
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.title {
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padding-right: 22rpx;
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justify-content: flex-end;
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}
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.line {
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background: #43B741;
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}
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}
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&-4 {
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top: 205rpx;
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left: 0rpx;
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.title {
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padding-right: 22rpx;
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justify-content: flex-end;
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}
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.line {
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background: #EB7F09;
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}
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}
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}
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</style>
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