Echarts在线免费图表

 
            // style的参考文档 https://ecomfe.github.io/zrender-doc/public/api.html#zrenderdisplayable

// 柱体左面
const CubeLeft = echarts.graphic.extendShape({
   shape: {
      x: 0,
      y: 0
   },
   buildPath: function (ctx, shape) {
      const xAxisPoint = shape.xAxisPoint
      const c0 = [shape.x, shape.y] // 右上点
      const c1 = [shape.x - 12, shape.y - 5] // 左上点
      const c2 = [xAxisPoint[0] - 12, xAxisPoint[1] - 6] // 左下点
      const c3 = [xAxisPoint[0], xAxisPoint[1]] // 右下点
      ctx.moveTo(c0[0], c0[1]).lineTo(c1[0], c1[1]).lineTo(c2[0], c2[1]).lineTo(c3[0], c3[1]).closePath()
   }
})
// 柱体右面
const CubeRight = echarts.graphic.extendShape({
   shape: {
      x: 0,
      y: 0
   },
   buildPath: function (ctx, shape) {
      const xAxisPoint = shape.xAxisPoint
      const c1 = [shape.x, shape.y] // 左上点
      const c2 = [xAxisPoint[0], xAxisPoint[1]] // 左下点
      const c3 = [xAxisPoint[0] + 20, xAxisPoint[1] - 6] // 右下点
      const c4 = [shape.x + 20, shape.y - 3.5] // 右上点
      ctx.moveTo(c1[0], c1[1]).lineTo(c2[0], c2[1]).lineTo(c3[0], c3[1]).lineTo(c4[0], c4[1]).closePath()
   }
})
// 柱体顶面
const CubeTop = echarts.graphic.extendShape({
   shape: {
      x: 0,
      y: 0
   },
   buildPath: function (ctx, shape) {
      const c1 = [shape.x, shape.y] // 下点
      const c2 = [shape.x + 20, shape.y - 4] // 右点
      const c3 = [shape.x + 9, shape.y - 8] // 上点
      const c4 = [shape.x - 12, shape.y - 5] // 左点
      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]
const GenerateBarGradient = function () {
   return new echarts.graphic.LinearGradient(0, 0, 0, 1, [
      {
         offset: 0,
         color: "#01E2EF",
      },
      {
         offset: 1,
         color: "#134E9F",
      },
   ]);
}
const ChartBgColor = 'rgba(1, 13, 58, 1)';
const OptityBarBgColor = 'rgba(7, 29, 97, .6)'

option = {
   // 图表背景大图
   backgroundColor: ChartBgColor,
   // 标题
   title: {
      text: '测试背景大图',
      top: 32,
      left: 18,
      textStyle: {
         color: '#00F6FF',
         fontSize: 24
      }
   },
   // 控制图片位置偏移
   grid: {
      left: 20,
      right: 40,
      bottom: '19%',
      top: 107,
      containLabel: true
   },
   tooltip: {
      trigger: 'axis'
   },
   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: true,
         lineStyle: {
            color: 'white'
         }
      },
      offset: 20,
      axisTick: {
         show: false,
         length: 9,
         alignWithLabel: true,
         lineStyle: {
            color: '#7DFFFD'
         }
      },
      axisLabel: {
         fontSize: 10
      }
   },
   yAxis: {
      type: 'value',
      axisLine: {
         show: true,
         lineStyle: {
            color: 'white'
         }
      },
      splitLine: {
         show: false
      },
      axisTick: {
         show: false
      },
      axisLabel: {
         fontSize: 16
      },
      boundaryGap: ['20%', '20%']
   },
   series: [
      // 透明的柱体，和背景色是同色系的
      {
         type: 'custom',
         data: MAX,
         renderItem: function (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: OptityBarBgColor
                     }
                  },
                  {
                     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: 'rgba(10,35,108,.7)'
                     }
                  },
                  {
                     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: 'rgba(11,42,106,.8)'
                     }
                  }
               ]
            }
         }
      },
      // 显示柱体文本
      {
         type: 'bar',
         data: MAX,
         label: {
            normal: {
               show: true,
               position: 'top',
               formatter: (e) => {
                  switch (e.name) {
                     case '10kV线路':
                        return VALUE[0]
                     case '公用配变':
                        return VALUE[1]
                     case '35kV主变':
                        return VALUE[2]
                     case '水':

                  }
               },
               fontSize: 16,
               color: '#fff',
               offset: [4, -25]
            }
         },
         itemStyle: {
            color: 'transparent'
         }
      },
      // 实际显示的柱体
      {
         type: 'custom',
         data: VALUE,
         tooltip: {},
         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: GenerateBarGradient()
                     }
                  },
                  {
                     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: GenerateBarGradient()
                     }
                  },
                  {
                     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: GenerateBarGradient()
                     }
                  }
               ]
            }
         }
      }
   ]
}