立体柱图echarts custom配置项内容和展示

      const CubeLeft = echarts.graphic.extendShape({
    shape: {
        x: 0,
        y: 0
    },
    buildPath: function(ctx, shape) {
        const xAxisPoint = shape.xAxisPoint
        const c0 = [shape.x, shape.y]
        const c1 = [shape.x - 9, shape.y - 9]
        const c2 = [xAxisPoint[0] - 9, xAxisPoint[1] - 9]
        const c3 = [xAxisPoint[0], xAxisPoint[1]]
        ctx.moveTo(c0[0], c0[1]).lineTo(c1[0], c1[1]).lineTo(c2[0], c2[1]).lineTo(c3[0], c3[1]).closePath()
    }
})
const CubeRight = echarts.graphic.extendShape({
    shape: {
        x: 0,
        y: 0
    },
    buildPath: function(ctx, shape) {
        const xAxisPoint = shape.xAxisPoint
        const c1 = [shape.x, shape.y]
        const c2 = [xAxisPoint[0], xAxisPoint[1]]
        const c3 = [xAxisPoint[0] + 18, xAxisPoint[1] - 9]
        const c4 = [shape.x + 18, shape.y - 9]
        ctx.moveTo(c1[0], c1[1]).lineTo(c2[0], c2[1]).lineTo(c3[0], c3[1]).lineTo(c4[0], c4[1]).closePath()
    }
})
const CubeTop = echarts.graphic.extendShape({
    shape: {
        x: 0,
        y: 0
    },
    buildPath: function(ctx, shape) {
        const c1 = [shape.x, shape.y]
        const c2 = [shape.x + 18, shape.y - 9]
        const c3 = [shape.x + 9, shape.y - 18]
        const c4 = [shape.x - 9, shape.y - 9]
        ctx.moveTo(c1[0], c1[1]).lineTo(c2[0], c2[1]).lineTo(c3[0], c3[1]).lineTo(c4[0], c4[1]).closePath()
    }
})
echarts.graphic.registerShape('CubeLeft', CubeLeft)
echarts.graphic.registerShape('CubeRight', CubeRight)
echarts.graphic.registerShape('CubeTop', CubeTop)
const MAX = [6000, 6000, 6000, 6000, 6000, 5000, 4000, 3000, 2000, 4000, 3000, 2000]
const VALUE = [2012, 1230, 3790, 2349, 1654, 1230, 3790, 2349, 1654, 3790, 2349, 1654]
option = {
    backgroundColor: "#010d3a",
    grid: {
        left: 20,
        right: 40,
        bottom: '19%',
        top: 107,
        containLabel: true
    },
    xAxis: {
        type: 'category',
        data: ['德州', '德城区', '陵城区', '禹城市', '乐陵市', '临邑县',
            '平原县', '夏津县', '武城县', '庆云县', '宁津县', '齐河县'
        ],
        axisLine: {
            show: false,
        },
        offset: 20,
        axisTick: {
            show: false,
        },
        axisLabel: {
            show: true,
            textStyle: {
              color: '#fff'
            }
        }
    },
    yAxis: {
        type: 'value',
        axisLine: {
            show: true,
            lineStyle: {
                color: 'white'
            }
        },
        splitLine: {
            show: false
        },
        axisTick: {
            show: false
        },
        axisLabel: {
            fontSize: 16
        },
        // boundaryGap: ['20%', '20%']
    },
    series: [ {
        type: 'custom',
        renderItem: (params, api) => {
            const location = api.coord([api.value(0), api.value(1)])
            return {
                type: 'group',
                children: [{
                    type: 'CubeLeft',
                    shape: {
                        api,
                        xValue: api.value(0),
                        yValue: api.value(1),
                        x: location[0],
                        y: location[1],
                        xAxisPoint: api.coord([api.value(0), 0])
                    },
                    style: {
                        fill: new echarts.graphic.LinearGradient(0, 0, 0, 1, [{
                                offset: 0,
                                color: '#0D5FB3'
                            },
                            {
                                offset: 1,
                                color: '#20B1DF'
                            }
                        ])
                    }
                }, {
                    type: 'CubeRight',
                    shape: {
                        api,
                        xValue: api.value(0),
                        yValue: api.value(1),
                        x: location[0],
                        y: location[1],
                        xAxisPoint: api.coord([api.value(0), 0])
                    },
                    style: {
                        fill: new echarts.graphic.LinearGradient(0, 0, 0, 1, [{
                                offset: 0,
                                color: '#1D90FA'
                            },
                            {
                                offset: 1,
                                color: '#07C8EC'
                            }
                        ])
                    }
                }, {
                    type: 'CubeTop',
                    shape: {
                        api,
                        xValue: api.value(0),
                        yValue: api.value(1),
                        x: location[0],
                        y: location[1],
                        xAxisPoint: api.coord([api.value(0), 0])
                    },
                    style: {
                        fill: new echarts.graphic.LinearGradient(0, 0, 0, 1, [{
                                offset: 0,
                                color: '#06C8EC'
                            },
                            {
                                offset: 1,
                                color: '#06C8EC'
                            }
                        ])
                    }
                }]
            }
        },
        data: VALUE
    }]
}