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At first glance, label placement and node sizing are two separate problems. However, out of the three types of labels we currently support, two have considerable influence on the size of nodes (node labels and port labels, but you already figured this out yourself). Well, in fact, that's not completely true. It's not the labels that influence the size of nodes, it's the placement of labels. And if we didn't care for readability, the placement wouldn't influence node size at all. But we do. Take this simple example:
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Insert an image here. Two nodes, each with one port on the western side and one port on the eastern side. Port labels are placed inside the nodes and are the same for both nodes. The left node is too narrow to avoid overlaps between the port labels, the right node is wide enough. |
The two nodes have two labelled ports each. Let's assume port positions to be fixed, and labels to be placed inside the nodes. While the port labels fit perfectly fine into Node 1, Node 2 is clearly too narrow for them to be placed without overlaps: we would have to increase the width of the node. Label placement influences node sizing.
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