// 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 + 7, shape.y]
const c1 = [shape.x - 23, shape.y - 6]
const c2 = [xAxisPoint[0] - 23, xAxisPoint[1] - 13]
const c3 = [xAxisPoint[0] + 7, 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 + 7, shape.y]
const c2 = [xAxisPoint[0] + 7, xAxisPoint[1]]
const c3 = [xAxisPoint[0] + 25, xAxisPoint[1] - 15]
const c4 = [shape.x + 25, shape.y - 15]
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 + 7, shape.y]
const c2 = [shape.x + 25, shape.y - 15] //右点
const c3 = [shape.x - 5, shape.y - 20]
const c4 = [shape.x - 23, shape.y - 6]
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 = [200,300,350,400]
option = {
backgroundColor: "transparent",
title: {
text: '单位：个',
textStyle: {
color: '#7ebaf2',
fontWeight: '800',
fontSize: 12,
},
left: '18px',
top: '1%'
},
tooltip: {
trigger: 'axis',
axisPointer: {
type: 'shadow'
},
formatter: function(params, ticket, callback) {
const item = params[1]
return item.name + ' : ' + item.value;
}
},
grid: {
left: '5%',
right: '5%',
top: '12%',
bottom: '5%',
containLabel: true
},
xAxis: {
type: 'category',
data: ['海淀','朝阳','丰台','石景山'],
axisLine: {
show: true,
lineStyle: {
color: '#7ebaf2'
}
},
axisTick: {
show: false,
length: 9,
alignWithLabel: true,
lineStyle: {
color: '#7DFFFD'
}
},
axisLabel: {
fontSize: 12
}
},
yAxis: {
type: 'value',
min:0,
axisLine: {
show: true,
lineStyle: {
color: '#7ebaf2'
}
},
splitLine: {
show: false
},
splitArea: {
show: true,
areaStyle: {
color: [
"rgba(26,50,83,1)",
"rgba(30,57,92,1)",
]
}
},
axisTick: {
show: false
},
axisLabel: {
fontSize: 12
},
boundaryGap: ['20%', '20%']
},
series: [{
type: 'custom',
renderItem: (params, api) => {
let cubeLeftStyle = ''
let cubeRightStyle = ''
let cubeTopStyle = ''
if(params.dataIndex == 0){
cubeLeftStyle=new echarts.graphic.LinearGradient(0, 0, 0, 1, [{
offset: 0,
color: 'rgba(0,255,186,1)'
}, {
offset: 1,
color: 'rgba(0,148,109,1)'
}])
cubeRightStyle=new echarts.graphic.LinearGradient(0, 0, 0, 1, [{
offset: 0,
color: 'rgba(0,255,186,0.3)'
}, {
offset: 1,
color: 'rgba(0,148,109,0.3)'
}])
cubeTopStyle=new echarts.graphic.LinearGradient(0, 0, 0, 1, [{
offset: 0,
color: 'rgba(189,255,237,1)'
}, {
offset: 1,
color: 'rgba(189,255,237,1)'
}])
}else if(params.dataIndex == 1){
cubeLeftStyle=new echarts.graphic.LinearGradient(0, 0, 0, 1, [{
offset: 0,
color: 'rgba(222,231,235,1)'
}, {
offset: 1,
color: 'rgba(141,153,165,1)'
}])
cubeRightStyle=new echarts.graphic.LinearGradient(0, 0, 0, 1, [{
offset: 0,
color: 'rgba(222,231,235,0.3)'
}, {
offset: 1,
color: 'rgba(222,231,235,0.3)'
}])
cubeTopStyle=new echarts.graphic.LinearGradient(0, 0, 0, 1, [{
offset: 0,
color: 'rgba(255,255,255,1)'
}, {
offset: 1,
color: 'rgba(255,255,2555,1)'
}])
}else if(params.dataIndex == 2){
cubeLeftStyle=new echarts.graphic.LinearGradient(0, 0, 0, 1, [{
offset: 0,
color: 'rgba(62,255,255,1)'
}, {
offset: 1,
color: 'rgba(0,126,191,1)'
}])
cubeRightStyle=new echarts.graphic.LinearGradient(0, 0, 0, 1, [{
offset: 0,
color: 'rgba(23,176,255,1)'
}, {
offset: 1,
color: 'rgba(0,138,255,0.3)'
}])
cubeTopStyle=new echarts.graphic.LinearGradient(0, 0, 0, 1, [{
offset: 0,
color: 'rgba(163,232,255,1)'
}, {
offset: 1,
color: 'rgba(163,232,255,1)'
}])
}else if(params.dataIndex == 3){
cubeLeftStyle=new echarts.graphic.LinearGradient(0, 0, 0, 1, [{
offset: 0,
color: 'rgba(255,217,217,1)'
}, {
offset: 1,
color: 'rgba(180,97,97,1)'
}])
cubeRightStyle=new echarts.graphic.LinearGradient(0, 0, 0, 1, [{
offset: 0,
color: 'rgba(178,95,95,0.3)'
}, {
offset: 1,
color: 'rgba(89,47,47,0.3)'
}])
cubeTopStyle=new echarts.graphic.LinearGradient(0, 0, 0, 1, [{
offset: 0,
color: 'rgba(255,217,217,1)'
}, {
offset: 1,
color: 'rgba(255,217,217,1)'
}])
}
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: cubeLeftStyle
}
}, {
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:cubeRightStyle
}
},
{
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: cubeTopStyle
}
},
]
}
},
data: VALUE
}, {
type: 'bar',
label: {
normal: {
show: true,
position: 'top',
fontSize: 14,
color: '#fff',
offset: [2, -25]
}
},
itemStyle: {
color: 'transparent'
},
tooltip: {
},
data: VALUE
}]
}