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| // from Emden Gansner | |
| // https://mailman.research.att.com/pipermail/graphviz-interest/2010q2/007101.html | |
| // requires GraphViz 2.28.0 (fails with 2.26.3 at least) | |
| BEGIN { | |
| double tw[node_t]; // width of tree rooted at node | |
| double nw[node_t]; // width of node | |
| double xoff[node_t]; // x offset of root from left side of its tree | |
| double sp = 36; // extra space between left and right subtrees | |
| double wd, w, w1, w2; | |
| double x, y, z; |