// 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
const c0 = [shape.x, shape.y]
const c1 = [shape.x - 13, shape.y - 13]
const c2 = [xAxisPoint[0] - 13, xAxisPoint[1] - 13]
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] + 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()
}
})
// 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 + 18, shape.y - 9]
const c3 = [shape.x + 5, shape.y - 22]
const c4 = [shape.x - 13, shape.y - 13]
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 MAX = []
const VALUE = [340,150,241,479,256,500,200]
option = {
backgroundColor: "#1A213E",
tooltip: {
trigger: 'axis',
axisPointer: {
type: 'shadow'
},
formatter: function(params, ticket, callback) {
const item = params[1]
return item.name + ' : ' + item.value;
}
},
grid: {
left: 40,
right: 40,
bottom: 100,
top: 100,
containLabel: true
},
xAxis: {
type: 'category',
data: ['1', '2', '3', '4', '5', '6', '7'],
axisLine: {
show: false,
lineStyle: {
color: '#303133'
}
},
offset: 5,
axisTick: {
show: false,
length: 9,
alignWithLabel: true,
lineStyle: {
color: '#7DFFFD'
}
},
axisLabel: {
show: true,
fontSize: 16,
color: '#9FACBC'
},
},
yAxis: {
type: 'value',
axisLine: {
show: false,
lineStyle: {
color: '#ccc'
}
},
splitLine: {
show: true
},
axisTick: {
show: false
},
axisLabel: {
show: true,
fontSize: 16,
color: '#9FACBC'
},
splitLine: {
show:true,
lineStyle: {
color: '#333B55',
type: 'dashed'
}
},
},
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,
x: location[0],
y: location[1],
xAxisPoint: api.coord([api.value(0), 0])
},
style: {
fill: 'rgba(47,84,235,.2)'
}
}, {
type: 'CubeRight',
shape: {
api,
x: location[0],
y: location[1],
xAxisPoint: api.coord([api.value(0), 0])
},
style: {
fill: 'rgba(133,165,255,.2)'
}
}, {
type: 'CubeTop',
shape: {
api,
x: location[0],
y: location[1],
xAxisPoint: api.coord([api.value(0), 0])
},
style: {
fill: 'rgba(173,198,255,.2)'
}
}]
}
},
data: MAX
}, {
type: 'custom',
renderItem: (params, api) => {
const location = api.coord([api.value(0), api.value(1)])
var color1 = api.value(1) > 2000 ? 'red' : new echarts.graphic.LinearGradient(0, 0, 0, 1, [{
offset: 0,
color: 'rgba(24,144,255,1)'
},
{
offset: 1,
color: 'rgba(0,80,179,1)'
}
])
var color2 = api.value(1) > 2000 ? 'red' : new echarts.graphic.LinearGradient(0, 0, 0, 1, [{
offset: 0,
color: 'rgba(24,144,255,1)'
},
{
offset: 1,
color: 'rgba(64,169,255,1)'
}
])
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: color1
}
}, {
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: color1
}
}, {
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: color2
}
}]
}
},
data: VALUE
}, {
type: 'bar',
label: {
normal: {
show: true,
position: 'top',
fontSize: 16,
color: '#fff',
offset: [2, -25]
}
},
itemStyle: {
color: 'transparent'
},
tooltip: {
},
data: MAX
}]
}