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 - offsetX, shape.y - offsetY]
const c1 = [shape.x + offsetX, shape.y - offsetY]
const c2 = [xAxisPoint[0] + offsetX,xAxisPoint[1] + offsetY-10]
const c3 = [xAxisPoint[0] - offsetX, xAxisPoint[1] + offsetY-10]
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) {
//绘制六边形
// const c1 = [shape.x- offsetX/2, shape.y-offsetY-offsetY/2-6]
// const c2 = [shape.x + offsetX/2, shape.y-offsetY-offsetY/2-6] // 右点
// const c3 = [shape.x + offsetX, shape.y-offsetY/2-6]
// const c4 = [shape.x + offsetX/2, shape.y+offsetY/2-6]
// const c5 = [shape.x - offsetX/2, shape.y+offsetY/2-6]
// const c6 = [shape.x-offsetX, shape.y-offsetY/2-6]
// ctx.moveTo(c1[0], c1[1])
// .lineTo(c2[0], c2[1])
// .lineTo(c3[0], c3[1])
// .lineTo(c4[0], c4[1])
// .lineTo(c5[0], c5[1])
// .lineTo(c6[0], c6[1]).closePath()
//椭圆
var k = (offsetX/0.75),
h = offsetY/2,
x =shape.x,
y=shape.y-offsetY;
ctx.moveTo(x, y-h)
.bezierCurveTo(x+k, y-h, x+k, y+h, x, y+h)
.bezierCurveTo(x-k, y+h, x-k, y-h, x, y-h)
.closePath()
}
})
// 绘制底面
const CubeBottom = echarts.graphic.extendShape({
shape: {
x: 0,
y: 0
},
buildPath: function (ctx, shape) {
const xAxisPoint = shape.xAxisPoint
//六边形
// const c1 = [shape.x- offsetX/2, xAxisPoint[1]+offsetY/2+2]
// const c2 = [shape.x-offsetX, xAxisPoint[1]] // 右点
// const c3 = [shape.x + offsetX, xAxisPoint[1]]
// const c4 = [shape.x + offsetX/2, xAxisPoint[1]+offsetY/2+2]
// ctx.moveTo(c1[0], c1[1])
// .lineTo(c2[0], c2[1])
// .lineTo(c3[0], c3[1])
// .lineTo(c4[0], c4[1]).closePath()
//半个椭圆
var k = (offsetY/0.75),
w = offsetX,
x =shape.x,
y= xAxisPoint[1];
ctx.moveTo(x-w, y)
.bezierCurveTo(x-w, y+k, x+w, y+k, x+w, y)
.closePath()
}
})
// 注册三个面图形
echarts.graphic.registerShape('CubeLeft', CubeLeft)
echarts.graphic.registerShape('CubeBottom', CubeBottom)
echarts.graphic.registerShape('CubeTop', CubeTop)
const VALUE = [750, 600, 500, 400, 300]
const data=[[750, 600, 500, 400, 300],[780, 650, 400, 450, 200]]
let list=[]
data.forEach((ele,index)=>{
list.push({
type: 'custom',
renderItem: (params, api) => {
const location = api.coord([api.value(0), api.value(1)])
return {
type: 'group',
x: -10*index+index*60,
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: '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'
}
])
}
},
{
type: 'CubeBottom',
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: '#00A1A3'
},
{
offset: 1,
color: '#00A1A3'
}
])
}
},
]
}
},
data: ele
},)
})
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
}
},
dataZoom: [{
type: 'slider',
show: false,
realtime: true,
startValue: 0,
endValue: 3, // 初始显示index0-30的数据,可根据你的数据量设置
filterMode: 'none',
}, ],
series: list
}