This version can be used by the reader to allow it to read in older XPD files and properly unpack the data. ![]() Unsigned char - Version for the data contained in each primitive within the file. This enum is defined such that there is plenty of space to add new values if necessary. Valid values are Point, Spline, Card, Sphere, Archive, or CustomPT. This can be thought of as a minor version number (3.x).Įnum - The type of primitive in the file. Unsigned char - Version of the header data to allow backward compatibility if additional data is added to the header. It is laid out as follows:Ĥ bytes - The constant XPD3 is written to identify the file type (and major version). The header consists of data describing the contents of the file. ![]() ![]() The XPD file is broken into four main pieces: header, face, block, and primitive.
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