Open 3D File
The 3D extension files, despite the fact that the formats it acquires are similar in functionality, are well differentiated by each developer, we will see some below
Survex 3D Cavern File
In this particular case, a 3D file is a three-dimensional feature file, created by Survex, a program used to record and visualize cave system data.
About Survex
Survex is a cross-platform software, compatible with Windows, Linux and Mac, used for cave topography analysis.
It is free and open source software, licensed under the GNU GPL.
It is designed to be portable and, as mentioned above, can be run on a variety of platforms.
Function of 3D File on Survex
The 3D file contains data that allows the software to visualize a cave system in three dimensions.
The 3D file is normally generated from an SVX file using the 'cavern' program included with Survex.
The 3D files are viewed with 'Aven', a viewing program included in the Survex software package.
Stereo CAD-3D Image File
In this application, a 3D file is a three-dimensional image used by Atari Stereo CAD-3D, a program developed for Atari ST systems.
In this case, the 3D file stores 3D objects using the Motorola Fast Floating Point (LIBF) library, for the coordinates of the vertices.
Motorola FFP (Fast Floating Point) has been used, from the beginning, for floating point calculations, in any case, to simplify the interface against systems that do not support FFP but rather the IEEE format for floating point values.