20 lines
611 B
Plaintext
20 lines
611 B
Plaintext
xposition = function(curr, xlo, xhi)
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-- return the left margin to position a node at
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if curr.children == nil or #curr.children == 0 then
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return xlo
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end
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if #curr.children == 1 then
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return xposition(Nodes[curr.children[1]], xlo, xhi)
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end
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local total_boundaries = 0
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local curr_boundary = xlo
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for child_idx = 1,#curr.children-1 do
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local child_id = curr.children[child_idx]
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local child = Nodes[child_id]
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curr_boundary = curr_boundary + 620 * child.ntracks
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total_boundaries = total_boundaries + curr_boundary
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end
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local centerx = total_boundaries / (#curr.children-1)
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return centerx - 620/2
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end
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