Add Bluemap support to Fabric 1.20 #64
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Large number of markers hurt BlueMap performance; and CTM often provides small track segments that could be combined into larger segments. This commit combines about 50% of tracks, depending on the track layout itself. Works best with straight, non-branching tracks.
Simplify the line merging algorithm and take advantage of multiple sort passes to merge more lines.
By performing a tiny lookahead search when merging, we are able to optimize parallel tracks up to 30% of original number of tracks provided by the CTM API.
The new strategy is to group every line by starting point, and then iterate and merge through the list. It works surprisingly well, in fact the result is only 11% of original.
The merging algorithm is incredibly slow, so the number of paths merged is now determined by the original size of the network.
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This is a backport of #63 to Fabric 1.20 (the server I am using), with a commit to render curved tracks. cc @C1200.