| import * as vec2 from 'zrender/src/core/vector'; |
| export function circularLayout(seriesModel) { |
| var coordSys = seriesModel.coordinateSystem; |
| |
| if (coordSys && coordSys.type !== 'view') { |
| return; |
| } |
| |
| var rect = coordSys.getBoundingRect(); |
| var nodeData = seriesModel.getData(); |
| var graph = nodeData.graph; |
| var angle = 0; |
| var sum = nodeData.getSum('value'); |
| var unitAngle = Math.PI * 2 / (sum || nodeData.count()); |
| var cx = rect.width / 2 + rect.x; |
| var cy = rect.height / 2 + rect.y; |
| var r = Math.min(rect.width, rect.height) / 2; |
| graph.eachNode(function (node) { |
| var value = node.getValue('value'); |
| angle += unitAngle * (sum ? value : 1) / 2; |
| node.setLayout([r * Math.cos(angle) + cx, r * Math.sin(angle) + cy]); |
| angle += unitAngle * (sum ? value : 1) / 2; |
| }); |
| nodeData.setLayout({ |
| cx: cx, |
| cy: cy |
| }); |
| graph.eachEdge(function (edge) { |
| var curveness = edge.getModel().get('lineStyle.normal.curveness') || 0; |
| var p1 = vec2.clone(edge.node1.getLayout()); |
| var p2 = vec2.clone(edge.node2.getLayout()); |
| var cp1; |
| var x12 = (p1[0] + p2[0]) / 2; |
| var y12 = (p1[1] + p2[1]) / 2; |
| |
| if (+curveness) { |
| curveness *= 3; |
| cp1 = [cx * curveness + x12 * (1 - curveness), cy * curveness + y12 * (1 - curveness)]; |
| } |
| |
| edge.setLayout([p1, p2, cp1]); |
| }); |
| } |