ZDBSP

From ZDoom Wiki

ZDBSP is ZDoom's internal node builder. On September 11, 2003, Randy released it as an external download, so people could use it for non-ZDoom projects.

http://www.zdoom.org/files/utils/zdbsp-1.9.zip

Usage: zdbsp [options] sourcefile.wad
  -m, --map=MAP            Only affect the specified map
  -o, --output=FILE        Write output to FILE instead of tmp.wad
  -q, --no-prune           Keep unused sidedefs and sectors
  -N, --no-nodes           Do not rebuild nodes
  -g, --gl                 Build GL-friendly nodes
  -G, --gl-matching        Build GL-friendly nodes that match normal nodes
  -x, --gl-only            Only build GL-friendly nodes
  -5, --gl-v5              Create v5 GL-friendly nodes (ignored if -z is used)
  -b, --empty-blockmap     Create an empty blockmap
  -r, --empty-reject       Create an empty reject table
  -R, --zero-reject        Create a reject table of all zeroes
  -E, --no-reject          Leave reject table untouched
  -p, --partition=NNN      Maximum number of segs to consider at each node
  -s, --split-cost=NNN     Adjusts the cost for splitting segs
  -d, --diagonal-cost=NNN  Adjusts the cost for avoiding diagonal splitters
  -P, --no-polyobjs        Do not check for polyobject subsector splits
  -z, --compress           Compress the nodes (including GL nodes, if created)
  -Z, --compress-normal    Compress normal nodes but not GL nodes
  -v, --view               View the nodes
  -w, --warn               Show warning messages
  -t, --no-timing          Suppress timing information
  -V, --version            Display version information
      --help               Display this usage information