// 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 - 3]; // 右上 const c1 = [shape.x - 23, shape.y - 3]; // 左上 const c2 = [xAxisPoint[0] - 23, xAxisPoint[1]]; // 左下 const c3 = [xAxisPoint[0] + 7, xAxisPoint[1]]; // 右下 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 - 3]; // 左上 const c2 = [xAxisPoint[0] + 7, xAxisPoint[1]]; // 左下 const c3 = [xAxisPoint[0] + 25, xAxisPoint[1] - 12]; // 右下 const c4 = [shape.x + 25, shape.y - 15]; // 右上 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 - 3]; // 下 const c2 = [shape.x + 25, shape.y - 15]; // 右 const c3 = [shape.x - 5, shape.y - 15]; // 上 const c4 = [shape.x - 23, shape.y - 3]; // 左 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, 111]; option = { backgroundColor: '#11334D', 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: '18%', bottom: '29%', }, xAxis: { type: 'category', data: ['海淀', '朝阳', '丰台', '石景山', 1111], axisLine: { show: false, }, axisTick: { show: false, }, axisLabel: { fontSize: 12, textStyle: { color: '#ffffff', }, }, }, yAxis: { type: 'value', axisLine: { show: false, }, axisTick: { show: false, }, axisLabel: { fontSize: 12, textStyle: { color: '#ffffff', }, }, splitLine: { show: true, lineStyle: { color: 'rgba(255,255,255,0.1)', }, }, boundaryGap: ['20%', '20%'], }, series: [ { 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: 1, color: '#078BB9', }, { offset: 0, color: '#34E5FF', }, ]), }, }, { 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: '#066A8D', }, { offset: 1, color: '#066A8D', }, ]), }, }, { 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: '#5BFFFF', }, { offset: 1, color: '#5BFFFF', }, ]), }, }, ], }; }, data: VALUE, }, { type: 'bar', label: { normal: { show: true, position: 'top', fontSize: '16', color: '#fff', offset: [2, -15], }, }, itemStyle: { color: 'transparent', }, tooltip: {}, data: VALUE, }, ], };