PieChart3D.vue 12 KB

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  1. <script setup>
  2. import { onMounted, ref, watch } from "vue";
  3. import * as echarts from "echarts";
  4. import "echarts-gl";
  5. const props = defineProps({
  6. glxsList: Array,
  7. })
  8. let chart, option;
  9. const pieChart3d = ref();
  10. function initChart() {
  11. chart = echarts.init(pieChart3d.value);
  12. option = getPie3D(props.glxsList.map(item => ({
  13. ...item,
  14. label: {
  15. show: true
  16. }
  17. })),
  18. 0.75
  19. );
  20. // 监听鼠标事件,实现饼图选中效果(单选),近似实现高亮(放大)效果。
  21. let hoveredIndex = "";
  22. // 准备重新渲染扇形所需的参数
  23. let isSelected;
  24. let isHovered;
  25. let startRatio;
  26. let endRatio;
  27. let k;
  28. // 监听 mouseover,近似实现高亮(放大)效果
  29. chart.on("mouseover", function (params) {
  30. // 如果触发 mouseover 的扇形当前已高亮,则不做操作
  31. if (hoveredIndex === params.seriesIndex) {
  32. return;
  33. // 否则进行高亮及必要的取消高亮操作
  34. } else {
  35. // 如果当前有高亮的扇形,取消其高亮状态(对 option 更新)
  36. if (hoveredIndex !== "") {
  37. // 从 option.series 中读取重新渲染扇形所需的参数,将是否高亮设置为 false。
  38. isSelected = option.series[hoveredIndex].pieStatus.selected;
  39. isHovered = false;
  40. startRatio = option.series[hoveredIndex].pieData.startRatio;
  41. endRatio = option.series[hoveredIndex].pieData.endRatio;
  42. k = option.series[hoveredIndex].pieStatus.k;
  43. // 对当前点击的扇形,执行取消高亮操作(对 option 更新)
  44. option.series[hoveredIndex].parametricEquation = getParametricEquation(
  45. startRatio,
  46. endRatio,
  47. isSelected,
  48. isHovered,
  49. k,
  50. option.series[hoveredIndex].pieData.value
  51. );
  52. option.series[hoveredIndex].pieStatus.hovered = isHovered;
  53. // 将此前记录的上次选中的扇形对应的系列号 seriesIndex 清空
  54. hoveredIndex = "";
  55. }
  56. // 如果触发 mouseover 的扇形不是透明圆环,将其高亮(对 option 更新)
  57. if (params.seriesName !== "mouseoutSeries") {
  58. // 从 option.series 中读取重新渲染扇形所需的参数,将是否高亮设置为 true。
  59. isSelected = option.series[params.seriesIndex].pieStatus.selected;
  60. isHovered = true;
  61. startRatio = option.series[params.seriesIndex].pieData.startRatio;
  62. endRatio = option.series[params.seriesIndex].pieData.endRatio;
  63. k = option.series[params.seriesIndex].pieStatus.k;
  64. // 对当前点击的扇形,执行高亮操作(对 option 更新)
  65. option.series[params.seriesIndex].parametricEquation =
  66. getParametricEquation(
  67. startRatio,
  68. endRatio,
  69. isSelected,
  70. isHovered,
  71. k,
  72. option.series[params.seriesIndex].pieData.value + 5
  73. );
  74. option.series[params.seriesIndex].pieStatus.hovered = isHovered;
  75. // 记录上次高亮的扇形对应的系列号 seriesIndex
  76. hoveredIndex = params.seriesIndex;
  77. }
  78. // 使用更新后的 option,渲染图表
  79. chart.setOption(option);
  80. }
  81. });
  82. // 修正取消高亮失败的 bug
  83. chart.on("globalout", function () {
  84. if (hoveredIndex !== "") {
  85. // 从 option.series 中读取重新渲染扇形所需的参数,将是否高亮设置为 true。
  86. isSelected = option.series[hoveredIndex].pieStatus.selected;
  87. isHovered = false;
  88. k = option.series[hoveredIndex].pieStatus.k;
  89. startRatio = option.series[hoveredIndex].pieData.startRatio;
  90. endRatio = option.series[hoveredIndex].pieData.endRatio;
  91. // 对当前点击的扇形,执行取消高亮操作(对 option 更新)
  92. option.series[hoveredIndex].parametricEquation = getParametricEquation(
  93. startRatio,
  94. endRatio,
  95. isSelected,
  96. isHovered,
  97. k,
  98. option.series[hoveredIndex].pieData.value
  99. );
  100. option.series[hoveredIndex].pieStatus.hovered = isHovered;
  101. // 将此前记录的上次选中的扇形对应的系列号 seriesIndex 清空
  102. hoveredIndex = "";
  103. }
  104. // 使用更新后的 option,渲染图表
  105. chart.setOption(option);
  106. });
  107. if (option && typeof option === "object") {
  108. chart.setOption(option);
  109. }
  110. }
  111. onMounted(() => {
  112. initChart();
  113. });
  114. watch(() => props.glxsList, () => {
  115. initChart();
  116. })
  117. // 生成扇形的曲面参数方程
  118. function getParametricEquation(
  119. startRatio,
  120. endRatio,
  121. isSelected,
  122. isHovered,
  123. k,
  124. h
  125. ) {
  126. // 计算
  127. const midRatio = (startRatio + endRatio) / 2;
  128. const startRadian = startRatio * Math.PI * 2;
  129. const endRadian = endRatio * Math.PI * 2;
  130. const midRadian = midRatio * Math.PI * 2;
  131. // 如果只有一个扇形,则不实现选中效果。
  132. if (startRatio === 0 && endRatio === 1) {
  133. // eslint-disable-next-line no-param-reassign
  134. isSelected = false;
  135. }
  136. // 通过扇形内径/外径的值,换算出辅助参数 k(默认值 1/3)
  137. // eslint-disable-next-line no-param-reassign
  138. k = typeof k !== "undefined" ? k : 1 / 3;
  139. // 计算选中效果分别在 x 轴、y 轴方向上的位移(未选中,则位移均为 0)
  140. const offsetX = isSelected ? Math.cos(midRadian) * 0.1 : 0;
  141. const offsetY = isSelected ? Math.sin(midRadian) * 0.1 : 0;
  142. // 计算高亮效果的放大比例(未高亮,则比例为 1)
  143. const hoverRate = isHovered ? 1.05 : 1;
  144. // 返回曲面参数方程
  145. return {
  146. u: {
  147. min: -Math.PI,
  148. max: Math.PI * 3,
  149. step: Math.PI / 32,
  150. },
  151. v: {
  152. min: 0,
  153. max: Math.PI * 2,
  154. step: Math.PI / 20,
  155. },
  156. x(u, v) {
  157. if (u < startRadian) {
  158. return (
  159. offsetX + Math.cos(startRadian) * (1 + Math.cos(v) * k) * hoverRate
  160. );
  161. }
  162. if (u > endRadian) {
  163. return (
  164. offsetX + Math.cos(endRadian) * (1 + Math.cos(v) * k) * hoverRate
  165. );
  166. }
  167. return offsetX + Math.cos(u) * (1 + Math.cos(v) * k) * hoverRate;
  168. },
  169. y(u, v) {
  170. if (u < startRadian) {
  171. return (
  172. offsetY + Math.sin(startRadian) * (1 + Math.cos(v) * k) * hoverRate
  173. );
  174. }
  175. if (u > endRadian) {
  176. return (
  177. offsetY + Math.sin(endRadian) * (1 + Math.cos(v) * k) * hoverRate
  178. );
  179. }
  180. return offsetY + Math.sin(u) * (1 + Math.cos(v) * k) * hoverRate;
  181. },
  182. z(u, v) {
  183. if (u < -Math.PI * 0.5) {
  184. return Math.sin(u);
  185. }
  186. if (u > Math.PI * 2.5) {
  187. return Math.sin(u);
  188. }
  189. return Math.sin(v) > 0 ? 1 : -1;
  190. },
  191. };
  192. }
  193. // 生成模拟 3D 饼图的配置项
  194. function getPie3D(pieData, internalDiameterRatio) {
  195. const series = [];
  196. // 总和
  197. let sumValue = 0;
  198. let startValue = 0;
  199. let endValue = 0;
  200. const legendData = [];
  201. const k =
  202. typeof internalDiameterRatio !== "undefined"
  203. ? (1 - internalDiameterRatio) / (1 + internalDiameterRatio)
  204. : 1 / 3;
  205. let labelSeries = {
  206. id: 'labelSeries',
  207. type: 'bar3D',
  208. barSize: [0, 0],
  209. data: [],
  210. label: {
  211. show: true,
  212. formatter: function (params) {
  213. return `${params.value[3]}`;
  214. },
  215. color: '#fff',
  216. fontSize: '18px'
  217. }
  218. };
  219. // 为每一个饼图数据,生成一个 series-surface 配置
  220. for (let i = 0; i < pieData.length; i += 1) {
  221. sumValue += pieData[i].value;
  222. // console.log(pieData[i].name);
  223. const seriesItem = {
  224. name:
  225. typeof pieData[i].name === "undefined" ? `series${i}` : pieData[i].name,
  226. type: "surface",
  227. parametric: true,
  228. wireframe: {
  229. show: false,
  230. },
  231. pieData: pieData[i],
  232. pieStatus: {
  233. selected: false,
  234. hovered: false,
  235. k,
  236. }
  237. };
  238. if (typeof pieData[i].itemStyle !== "undefined") {
  239. const { itemStyle } = pieData[i];
  240. typeof pieData[i].itemStyle.color !== "undefined"
  241. ? (itemStyle.color = pieData[i].itemStyle.color)
  242. : null;
  243. typeof pieData[i].itemStyle.opacity !== "undefined"
  244. ? (itemStyle.opacity = pieData[i].itemStyle.opacity)
  245. : null;
  246. seriesItem.itemStyle = itemStyle;
  247. }
  248. series.push(seriesItem);
  249. }
  250. // 使用上一次遍历时,计算出的数据和 sumValue,调用 getParametricEquation 函数,
  251. // 向每个 series-surface 传入不同的参数方程 series-surface.parametricEquation,也就是实现每一个扇形。
  252. for (let i = 0; i < series.length; i += 1) {
  253. endValue = startValue + series[i].pieData.value;
  254. series[i].pieData.startRatio = startValue / sumValue;
  255. series[i].pieData.endRatio = endValue / sumValue;
  256. series[i].parametricEquation = getParametricEquation(
  257. series[i].pieData.startRatio,
  258. series[i].pieData.endRatio,
  259. false,
  260. false,
  261. k,
  262. // ,使除了第一个之外的值都是10
  263. series[i].pieData.value
  264. );
  265. startValue = endValue;
  266. legendData.push(series[i].name);
  267. // 判断增加 label 效果 @20210613
  268. if (pieData[i].label && pieData[i].label.show) {
  269. let labelRadian = (series[i].pieData.startRatio + series[i].pieData.endRatio) * Math.PI;
  270. labelSeries.data.push({
  271. name: series[i].name,
  272. value: [Math.cos(labelRadian), Math.sin(labelRadian), 1.2, series[i].pieData.value],
  273. itemStyle: {
  274. opacity: 1,
  275. },
  276. });
  277. }
  278. }
  279. // 将 labelSeries 添加进去 @20210613
  280. series.push(labelSeries);
  281. // 准备待返回的配置项,把准备好的 legendData、series 传入。
  282. const option = {
  283. color: ["#1162fe", "#3fc865", "#FF7A00", "#5ef8c9", "#5ed3f8", "#5e92f8"],
  284. legend: {
  285. data: ["有管理单位(物业)", "有管理单位(非物业)", "居民自主管理", "街道社区代管", "其他管理形式", "无管理主体"],
  286. icon: "roundRect",
  287. orient: "vertical",
  288. padding: 5,
  289. itemGap: 20,
  290. top: "4%",
  291. right: 0,
  292. itemWidth: 10, // 设置宽度
  293. itemHeight: 10, // 设置高度
  294. selectedMode: true,
  295. textStyle: {
  296. color: "#FFFFFF",
  297. fontSize: 14,
  298. lineHeight: 14,
  299. rich: {
  300. a: {
  301. // verticalAlign: "middle",
  302. },
  303. },
  304. padding: [0, 0, -3, 0],
  305. },
  306. },
  307. tooltip: {
  308. formatter: (params) => {
  309. if (params.seriesName !== "mouseoutSeries") {
  310. return `${
  311. params.seriesName
  312. }<br/><span style="display:inline-block;margin-right:5px;border-radius:10px;width:10px;height:10px;background-color:${
  313. params.color
  314. };"></span>${option.series[params.seriesIndex].pieData.value}`;
  315. }
  316. return "";
  317. },
  318. },
  319. title: [
  320. {
  321. text: "单位:栋",
  322. top: 8,
  323. left: 10,
  324. textStyle: {
  325. fontSize: 12,
  326. color: "#5ed3f8",
  327. },
  328. },
  329. ],
  330. xAxis3D: {
  331. min: -1,
  332. max: 1,
  333. },
  334. yAxis3D: {
  335. min: -1,
  336. max: 1,
  337. },
  338. zAxis3D: {
  339. min: -1,
  340. max: 'dataMax',
  341. },
  342. grid3D: {
  343. show: false,
  344. boxHeight: 15,
  345. top: "-17%",
  346. left: "-16%",
  347. viewControl: {
  348. // 3d效果可以放大、旋转等,请自己去查看官方配置
  349. alpha: 27,
  350. beta: 70, //旋转角度
  351. rotateSensitivity: 1,
  352. zoomSensitivity: 0,
  353. panSensitivity: 0,
  354. distance: 150,
  355. },
  356. // 后处理特效可以为画面添加高光、景深、环境光遮蔽(SSAO)、调色等效果。可以让整个画面更富有质感。
  357. postEffect: {
  358. // 配置这项会出现锯齿,请自己去查看官方配置有办法解决
  359. enable: false,
  360. bloom: {
  361. enable: true,
  362. bloomIntensity: 0.1,
  363. },
  364. SSAO: {
  365. enable: true,
  366. quality: "medium",
  367. radius: 2,
  368. },
  369. },
  370. },
  371. series,
  372. };
  373. return option;
  374. }
  375. </script>
  376. <template>
  377. <div class="container">
  378. <div ref="pieChart3d" class="chart"></div>
  379. </div>
  380. </template>
  381. <style scoped lang="less">
  382. .container {
  383. width: 440px;
  384. height: 264px;
  385. position: relative;
  386. }
  387. .container::after {
  388. content: "";
  389. position: absolute;
  390. width: 290px;
  391. height: 198px;
  392. background: url("../assets/images/1.png") no-repeat;
  393. background-size: 100% 100%;
  394. left: calc(50% - 145px);
  395. bottom: 1%;
  396. left: 0;
  397. }
  398. .container::before {
  399. content: attr(data-num);
  400. position: absolute;
  401. font-size: 18px;
  402. font-family: YouSheBiaoTiHei;
  403. color: #ffffff;
  404. line-height: 42px;
  405. text-shadow: 0px 2px 6px rgba(0, 0, 0, 0.5);
  406. left: 50%;
  407. transform: translate(-50%);
  408. top: 30%;
  409. }
  410. .chart {
  411. width: 440px;
  412. height: 100%;
  413. position: relative;
  414. z-index: 1;
  415. }
  416. </style>