Echarts在线免费图表

 
              const offsetX = 20
  const offsetY = 10
  // 绘制左侧面
  const CubeLeft = echarts.graphic.extendShape({
    shape: {
      x: 0,
      y: 0
    },
    buildPath: function (ctx, shape) {
    // 会canvas的应该都能看得懂，shape是从custom传入的
      const xAxisPoint = shape.xAxisPoint
      // console.log(shape);
      const c0 = [shape.x, shape.y]
      const c1 = [shape.x - offsetX, shape.y - offsetY]
      const c2 = [xAxisPoint[0] - offsetX, xAxisPoint[1] - offsetY]
      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()
    }
  })
  // 绘制右侧面
  const CubeRight = echarts.graphic.extendShape({
    shape: {
      x: 0,
      y: 0
    },
    buildPath: function (ctx, shape) {
      const xAxisPoint = shape.xAxisPoint
      const c1 = [shape.x, shape.y]
      const c2 = [xAxisPoint[0], xAxisPoint[1]]
      const c3 = [xAxisPoint[0] + offsetX, xAxisPoint[1] - offsetY]
      const c4 = [shape.x + offsetX, shape.y - offsetY]
      ctx.moveTo(c1[0], c1[1]).lineTo(c2[0], c2[1]).lineTo(c3[0], c3[1]).lineTo(c4[0], c4[1]).closePath()
    }
  })
  // 绘制顶面
  const CubeTop = echarts.graphic.extendShape({
    shape: {
      x: 0,
      y: 0
    },
    buildPath: function (ctx, shape) {
      const c1 = [shape.x, shape.y]
      const c2 = [shape.x + offsetX, shape.y - offsetY] // 右点
      const c3 = [shape.x, shape.y - offsetX]
      const c4 = [shape.x - offsetX, shape.y - offsetY]
      ctx.moveTo(c1[0], c1[1]).lineTo(c2[0], c2[1]).lineTo(c3[0], c3[1]).lineTo(c4[0], c4[1]).closePath()
    }
  })
  // 注册三个面图形
  echarts.graphic.registerShape('CubeLeft', CubeLeft)
  echarts.graphic.registerShape('CubeRight', CubeRight)
  echarts.graphic.registerShape('CubeTop', CubeTop)

  const VALUE = [750, 600, 500, 400, 300]

  const option = {
    backgroundColor: 'rgba(0,0,0, .6)',
    tooltip: {
      trigger: 'axis',
      axisPointer: {
        type: 'shadow'
      },
      formatter: function (params) {
        const item = params[1]
        return item.name + ' : ' + item.value
      }
    },
    grid: {
      left: '5%',
      right: '5%',
      top: '10%',
      bottom: '10%',
      containLabel: true
    },
    xAxis: {
      type: 'category',
      data: ['影视', '高端装备', '计算机', '总集成', '3d打印'],
      axisLine: {
        show: true,
        lineStyle: {
          width: 1,
          color: '#CEDDF2'
        }
      },
      axisTick: {
        show: false
      },
      axisLabel: {
        fontSize: 10
      }
    },
    yAxis: {
      type: 'value',
      axisLine: {
        show: false,
        lineStyle: {
          width: 2,
          color: '#CEDDF2'
        }
      },
      splitLine: {
        show: true,
        lineStyle: {
          color: '#2A353F',
          type: 'dashed'
        }
      },
      axisTick: {
        show: false
      },
      axisLabel: {
        fontSize: 12
      }
    },
    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: '#8DC21F'
                    },
                    {
                      offset: 1,
                      color: '#00A1A3'
                    }
                  ])
                }
              },
              {
                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: '#70A600'
                    },
                    {
                      offset: 1,
                      color: '#027E80'
                    }
                  ])
                }
              },
              {
                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: '#8DC21F'
                    },
                    {
                      offset: 1,
                      color: '#70A600'
                    }
                  ])
                }
              }
            ]
          }
        },
        data: VALUE
      },
      {
        type: 'bar',
        itemStyle: {
          color: 'transparent'
        },
        tooltip: {},
        data: VALUE
      },
      {
        name: '',
        barGap: '-100%',
        type: 'bar',
        z: 0,
        data: [1000, 1000, 1000, 1000, 1000],
        barWidth: '70%',
        itemStyle: {
          normal: {
            color: 'rgba(255,255,255,0.1)' // 0% 处的颜色
          }
        }

      }
    ]
  }