DIR3 uses two primary file formats.
PLC (for piecewise linear complex) format is used for input.
TPLC (for triangulated piecewise linear complex) is used
DIR3 also generates files in the OFF format.
Two programs for visualizing files in this format are Geomview and Javaview.
The specifcation for the DIR3 configuration file is described here.
A simple program for converting basic OFF files into PLC format is
off2plc. This can be downloaded below.
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