饼图

描述:当前是关于Echarts图表中的 饼图 示例。
 
            var img =
  'data:image/png;base64,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';
let angle = 0; //角度,用来做简单的动画效果的

var timerId;
var trafficWay = [
  {
    name: '吃喝',
    value: 20,
  },
  {
    name: '服饰',
    value: 10,
  },
  {
    name: '日用品',
    value: 30,
  },
  {
    name: '化妆品',
    value: 40,
  },
];

var data = [];
// 00FEFF
var color = ['#FF801C', '#F5FF46', '#00FE65', '#00FEFF', '#ffa800', '#ff5b00', '#ff3000'];
for (var i = 0; i < trafficWay.length; i++) {
  data.push(
    {
      value: trafficWay[i].value,
      name: trafficWay[i].name,
      itemStyle: {
        normal: {
          borderWidth: 5,
          shadowBlur: 20,
          borderColor: color[i],
          shadowColor: color[i],
        },
      },
    },
    {
      value: 2,
      name: '',
      itemStyle: {
        normal: {
          label: {
            show: false,
          },
          labelLine: {
            show: false,
          },
          color: 'rgba(0, 0, 0, 0)',
          borderColor: 'rgba(0, 0, 0, 0)',
          borderWidth: 0,
        },
      },
    }
  );
}
var seriesOption = [
  {
    name: '',
    type: 'pie',
    clockWise: false,
    animation: false,
    radius: [105, 140],
    hoverAnimation: false,
    itemStyle: {
      normal: {
        label: {
          show: true,
          position: 'outside',
          color: '#ddd',
          formatter: function (params) {
            var percent = 0;
            var total = 0;
            for (var i = 0; i < trafficWay.length; i++) {
              total += trafficWay[i].value;
            }
            percent = ((params.value / total) * 100).toFixed(0);
            if (params.name !== '') {
              return '占百分比:' + percent + '%';
              // return '交通方式:' + params.name + '\n' + '\n' + '占百分比:' + percent + '%';
            } else {
              return '';
            }
          },
        },
        labelLine: {
          length: 30,
          length2: 100,
          show: true,
          color: '#00ffff',
        },
      },
    },
    data: data,
  },
  // 紫色
  {
    name: 'ring5',
    type: 'custom',
    coordinateSystem: 'none',
    renderItem: function (params, api) {
      return {
        type: 'arc',
        shape: {
          cx: api.getWidth() / 2,
          cy: api.getHeight() / 2,
          r: Math.min(api.getWidth(), api.getHeight()) / 5.3,
          startAngle: ((0 + angle) * Math.PI) / 180,
          endAngle: ((90 + angle) * Math.PI) / 180,
        },
        style: {
          stroke: '#00FEFF',
          fill: 'transparent',
          lineWidth: 1.5,
        },
        silent: true,
      };
    },
    data: [0],
  },
  {
    name: 'ring5', //紫点
    type: 'custom',
    coordinateSystem: 'none',
    renderItem: function (params, api) {
      let x0 = api.getWidth() / 2;
      let y0 = api.getHeight() / 2;
      let r = Math.min(api.getWidth(), api.getHeight()) / 5.3;
      let point = getCirlPoint(x0, y0, r, 90 + angle);
      return {
        type: 'circle',
        shape: {
          cx: point.x,
          cy: point.y,
          r: 4,
        },
        style: {
          stroke: '#00FEFF', //绿
          fill: '#00FEFF',
        },
        silent: true,
      };
    },
    data: [0],
  },
  // 蓝色

  {
    name: 'ring5',
    type: 'custom',
    coordinateSystem: 'none',
    renderItem: function (params, api) {
      return {
        type: 'arc',
        shape: {
          cx: api.getWidth() / 2,
          cy: api.getHeight() / 2,
          r: Math.min(api.getWidth(), api.getHeight()) / 5.3,
          startAngle: ((180 + angle) * Math.PI) / 180,
          endAngle: ((270 + angle) * Math.PI) / 180,
        },
        style: {
          stroke: '#00FEFF',
          fill: 'transparent',
          lineWidth: 1.5,
        },
        silent: true,
      };
    },
    data: [0],
  },
  {
    name: 'ring5', // 蓝色
    type: 'custom',
    coordinateSystem: 'none',
    renderItem: function (params, api) {
      let x0 = api.getWidth() / 2;
      let y0 = api.getHeight() / 2;
      let r = Math.min(api.getWidth(), api.getHeight()) / 5.3;
      let point = getCirlPoint(x0, y0, r, 180 + angle);
      return {
        type: 'circle',
        shape: {
          cx: point.x,
          cy: point.y,
          r: 4,
        },
        style: {
          stroke: '#00FEFF', //绿
          fill: '#00FEFF',
        },
        silent: true,
      };
    },
    data: [0],
  },

  {
    name: 'ring5',
    type: 'custom',
    coordinateSystem: 'none',
    renderItem: function (params, api) {
      return {
        type: 'arc',
        shape: {
          cx: api.getWidth() / 2,
          cy: api.getHeight() / 2,
          r: Math.min(api.getWidth(), api.getHeight()) / 5.8,
          startAngle: ((270 + -angle) * Math.PI) / 180,
          endAngle: ((40 + -angle) * Math.PI) / 180,
        },
        style: {
          stroke: '#00FEFF',
          fill: 'transparent',
          lineWidth: 1.5,
        },
        silent: true,
      };
    },
    data: [0],
  },
  // 橘色

  {
    name: 'ring5',
    type: 'custom',
    coordinateSystem: 'none',
    renderItem: function (params, api) {
      return {
        type: 'arc',
        shape: {
          cx: api.getWidth() / 2,
          cy: api.getHeight() / 2,
          r: Math.min(api.getWidth(), api.getHeight()) / 5.8,
          startAngle: ((90 + -angle) * Math.PI) / 180,
          endAngle: ((220 + -angle) * Math.PI) / 180,
        },
        style: {
          stroke: '#00FEFF',
          fill: 'transparent',
          lineWidth: 1.5,
        },
        silent: true,
      };
    },
    data: [0],
  },
  {
    name: 'ring5',
    type: 'custom',
    coordinateSystem: 'none',
    renderItem: function (params, api) {
      let x0 = api.getWidth() / 2;
      let y0 = api.getHeight() / 2;
      let r = Math.min(api.getWidth(), api.getHeight()) / 5.8;
      let point = getCirlPoint(x0, y0, r, 90 + -angle);
      return {
        type: 'circle',
        shape: {
          cx: point.x,
          cy: point.y,
          r: 4,
        },
        style: {
          stroke: '#00FEFF', //粉
          fill: '#00FEFF',
        },
        silent: true,
      };
    },
    data: [0],
  },
  {
    name: 'ring5', //绿点
    type: 'custom',
    coordinateSystem: 'none',
    renderItem: function (params, api) {
      let x0 = api.getWidth() / 2;
      let y0 = api.getHeight() / 2;
      let r = Math.min(api.getWidth(), api.getHeight()) / 5.8;
      let point = getCirlPoint(x0, y0, r, 270 + -angle);
      return {
        type: 'circle',
        shape: {
          cx: point.x,
          cy: point.y,
          r: 4,
        },
        style: {
          stroke: '#00FEFF', //绿
          fill: '#00FEFF',
        },
        silent: true,
      };
    },
    data: [0],
  },
];
option = {
  backgroundColor: '#000E1A',
  color: color,

  graphic: {
    elements: [
      {
        type: 'image',
        z: 3,
        style: {
          image: img,
          width: 178,
          height: 178,
        },
        left: 'center',
        top: 'center',
        position: [100, 100],
      },
    ],
  },
  tooltip: {
    show: false,
  },
  legend: {
    icon: 'circle',
    orient: 'horizontal',
    // x: 'left',
    data: ['吃喝', '服饰', '日用品', '化妆品'],

    align: 'right',
    textStyle: {
      color: '#fff',
    },
    itemGap: 20,
  },
  toolbox: {
    show: false,
  },
  series: seriesOption,
};

//获取圆上面某点的坐标(x0,y0表示坐标,r半径,angle角度)
function getCirlPoint(x0, y0, r, angle) {
  let x1 = x0 + r * Math.cos((angle * Math.PI) / 180);
  let y1 = y0 + r * Math.sin((angle * Math.PI) / 180);
  return {
    x: x1,
    y: y1,
  };
}
window.requestAnimationFrame(function(){
  draw()
})

function draw() {
  angle = angle + 3;
  myChart.setOption(option, true);
  // window.requestAnimationFrame(draw);
}
if (timerId) {
  clearInterval(timerId);
}
timerId = setInterval(function () {
  //用setInterval做动画感觉有问题
  draw();
}, 50);