let data = [{
level: '2014年',
landArea: 34
},
{
level: '2015年',
landArea: 52
},
{
level: '2016年',
landArea: 254
},
{
level: '2017年',
landArea: 496
},
{
level: '2018年',
landArea: 709
},
{
level: '2019年',
landArea: 964
},
]
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 - 20, shape.y - 4]
const c2 = [xAxisPoint[0] - 20, xAxisPoint[1] - 4]
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] + 8, xAxisPoint[1] - 4]
const c4 = [shape.x + 8, shape.y - 4]
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) {
// 逆时针 角 y 负数向上 X 负数向左
const c1 = [shape.x, shape.y]
const c2 = [shape.x + 8, shape.y - 4]
const c3 = [shape.x - 11, shape.y - 8]
const c4 = [shape.x - 20, shape.y - 4]
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)
let MAX = []
let VALUE = []
let LEV = []
let chartData = [].concat(data)
chartData.forEach(item => {
VALUE.push(item.landArea)
LEV.push(item.level)
})
let maxItem = [].concat(VALUE).sort((a, b) => b - a)[0]
let SUM = 0
for (let item of VALUE) {
SUM += item
MAX.push(maxItem)
}
option = {
title: [{
text: '历年公开征集供应商公告数量',
left: '25%',
top: '7%',
textStyle: {
color: '#fff',
fontSize: 25
}
} ],
backgroundColor: 'rgba(0, 43, 77, 0.9)',
tooltip: {
trigger: 'item',
confine: false,
position: 'top',
textStyle: {
fontSize: 12
},
// extraCssText: 'box-shadow: 0 0 20px #00C7FF inset',
// backgroundColor: 'rgba(0,155,206,0.5)',
backgroundColor: 'transparent',
formatter: function(params) {
let percentage = (VALUE[params.dataIndex] / SUM * 100).toFixed(2)
return `<div class="tooltip">${VALUE[params.dataIndex]}</div>`
},
extraCssText: 'box-shadow: 0 0 20px #00C7FF inset;'
},
grid: {
show: false,
left: 0,
right: 10,
bottom: 150,
top: 70,
containLabel: true
},
xAxis: {
type: 'category',
data: LEV,
axisLine: {
show: true,
lineStyle: {
color: new echarts.graphic.LinearGradient(0, 0, 1, 1, [{
offset: 0,
color: '#D2A62E'
}, {
offset: 1,
color: '#C62129'
}])
}
},
offset: 10,
axisTick: {
show: false
},
axisLabel: {
fontSize: 12,
color: '#00FFFE'
}
},
yAxis: {
show: false,
type: 'value',
axisLine: {
show: true,
lineStyle: {
color: 'white'
}
},
splitLine: {
show: false
},
axisTick: {
show: false
},
axisLabel: {
fontSize: 12
},
boundaryGap: ['20%', '20%']
},
series: [{
type: 'custom',
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: 'rgba(1,17,33,.5)'
}
}, {
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(1,17,33,.5)'
}
}, {
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(1,17,33,.5)'
}
}]
}
},
data: MAX
}, {
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: '#1477BD'
}, {
offset: 1,
color: '#00FFFE'
}])
}
}, {
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: '#002E75' // 顶部
}, {
offset: 1,
color: '#00B0D0' // 底部
}])
}
}, {
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: '#33F7FB'
}, {
offset: 1,
color: '#00FFFE'
}])
}
}]
}
},
data: VALUE
}, {
type: 'bar',
label: {
normal: {
show: false,
position: 'top',
formatter: (e) => {
switch (e.name) {
case '2014年':
return VALUE[0]
case '2015年':
return VALUE[1]
case '2016年':
return VALUE[2]
case '2017年':
return VALUE[3]
case '2018年':
return VALUE[4]
case '2019年':
return VALUE[5]
}
},
fontSize: 10,
color: '#fff',
offset: [0, -5]
}
},
itemStyle: {
color: 'transparent'
},
data: MAX
}]
}