echarts 实现3d饼图

以下是使用Apache ECharts实现3D饼图的示例代码：

option = {
    series: [{
        type: 'pie',
        radius: [50, 150],
        center: ['50%', '50%'],
        roseType: 'area',
        itemStyle: {
            borderRadius: 8,
            borderColor: '#fff',
            borderWidth: 1
        },
        label: {
            show: false
        },
        emphasis: {
            label: {
                show: true
            }
        },
        data: [
            {value: 40, name: 'rose 1'},
            {value: 33, name: 'rose 2'},
            {value: 28, name: 'rose 3'},
            {value: 22, name: 'rose 4'},
            {value: 20, name: 'rose 5'},
            {value: 15, name: 'rose 6'},
            {value: 12, name: 'rose 7'},
            {value: 10, name: 'rose 8'}
        ]
    }]
};

// 构建饼图函数，绘制3d图
function buildPieChart() {
    // 设置透明的空心占比
    var internalDiameterRatio = 0;
    // 设置饼图的3D效果
    option.series[0].type = 'pie3D';
    option.series[0].radius = [50, 150];
    option.series[0].itemStyle = {
        borderRadius: 8,
        borderColor: '#fff',
        borderWidth: 1,
        opacity: 1 - internalDiameterRatio,
        shadowBlur: 20,
        shadowOffsetX: 0,
        shadowOffsetY: 0,
        shadowColor: 'rgba(0, 0, 0, 0.5)'
    };
    option.series[0].label = {
        show: true,
        formatter: '{b}: {c} ({d}%)'
    };
    option.series[0].emphasis = {
        label: {
            show: true,
            fontSize: '30',
            fontWeight: 'bold'
        }
    };
    // 绘制饼图
    var myChart = echarts.init(document.getElementById('main'));
    myChart.setOption(option);
}

buildPieChart();