const offsetX = 15; //bar宽
const offsetY = 5; //倾斜角度
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 - offsetX, shape.y - offsetY + 10]; // 左侧面 左上点
const c2 = [xAxisPoint[0] - offsetX, xAxisPoint[1] - offsetY + 5]; // 左侧面 左下点
const c3 = [xAxisPoint[0], xAxisPoint[1] + 0]; // 左侧面 右下点
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] + 0]; //右侧面 左下点
const c3 = [xAxisPoint[0] + offsetX, xAxisPoint[1] - offsetY + 5]; //右侧面 右下点
const c4 = [shape.x + offsetX, shape.y - offsetY + 10]; //右侧面 右上点
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 + 15]; //顶部菱形下点
const c2 = [shape.x + offsetX, shape.y - offsetY + 10]; //顶部菱形右点
const c3 = [shape.x, shape.y - offsetX + 10]; //顶部菱形上点
const c4 = [shape.x - offsetX, shape.y - offsetY + 10]; //顶部菱形左点
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 = [800, 800, 800, 800, 800, 800, 800]
const VALUE = [210.9, 260.8, 204.2, 504.9, 740.5, 600.3, 119.0]
option = {
backgroundColor: 'rgba(17, 42, 62, 1)',//"#012366",
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月', '2月', '3月', '4月', '5月', '6月', '7月'],
axisLine: {
show: true,
lineStyle: {
color: 'white'
}
},
offset: 25,
axisTick: {
show: false,
length: 9,
alignWithLabel: true,
lineStyle: {
color: '#7DFFFD'
}
},
axisLabel: {
show: true,
fontSize: 16
},
},
yAxis: {
min: 0,
// max: 1200,
// interval: 200,
type: 'value',
axisLine: {
show: false,
lineStyle: {
color: 'white'
}
},
splitLine: {
show: true,
lineStyle: {
type: "dashed",
color: "rgba(255,255,255,0.1)"
},
},
axisTick: {
show: false
},
axisLabel: {
show: true,
fontSize: 16,
},
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,
x: location[0],
y: location[1],
xAxisPoint: api.coord([api.value(0), 0])
},
style: {
fill: '#18385A'
}
}, {
type: 'CubeRight',
shape: {
api,
x: location[0],
y: location[1],
xAxisPoint: api.coord([api.value(0), 0])
},
style: {
fill: '#33718E'
}
}, {
type: 'CubeTop',
shape: {
api,
x: location[0],
y: location[1],
xAxisPoint: api.coord([api.value(0), 0])
},
style: {
fill: '#307E8E'
}
}]
}
},
data: MAX
}, {
type: 'custom',
renderItem: (params, api) => {
const location = api.coord([api.value(0), api.value(1)])
const isLastTwoBars = api.value(0) === VALUE.length - 2||api.value(0) === VALUE.length - 1;
var color =isLastTwoBars?'red': new echarts.graphic.LinearGradient(1, 1, 1, 0, [
{
offset: 0,
color: " #0097C8", // 最左边
},
{
offset: 1,
color: "#4CF0F9",
},
])
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: color
}
}, {
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: color
}
}, {
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: color }
}]
}
},
data: VALUE
}, {
type: 'bar',
itemStyle: {
color: 'transparent',
},
tooltip: {
},
data: MAX
}]
}