Joints
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小牛编辑
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2023-12-01
如果有两个或者更多的边共享了一个节点的起点(不仅仅指一个方向)它们会在路径的某一处分叉;同样,如果一个或者多个边共享了一个节点的终点,那么它们会在某个地方汇合。
[ Potsdam ], [ Mannheim ]
--> { end: back,0; }
[ Weimar ]
--> { start: front,0; } [ Finsterwalde ], [ Aachen ]
+----------+ +--------+ +--------------+
| Mannheim | ------+-> | Weimar | -+-----> | Finsterwalde |
+----------+ | +--------+ | +--------------+
| |
| |
| |
+----------+ | | +--------------+
| Potsdam | ------+ +-----> | Aachen |
+----------+ +--------------+
这个机制可以和边的标签一起使用:
[ Jena ]
-- train --> { start: front, 0; }
[ Augsburg ], [ Ulm ]
[ Jena ] -- car --> { start: front, 0; } [ Plauen ]
+------+ train +----------+
| Jena | ------+----------> | Ulm |
+------+ | +----------+
| train +----------+
+----------> | Augsburg |
| +----------+
| car +----------+
+----------> | Plauen |
+----------+