Filename extension |
.off |
---|---|
Internet media type |
text/plain |
Type of format | 3D model format |
OFF (Object File Format) is a geometry definition file format containing the description of the composing polygons of a geometric object. [1] It can store 2D or 3D objects, and simple extensions allow it to represent higher-dimensional objects as well. [2] Though originally developed for Geomview, a geometry visualization software, other software has adapted the simple standard. [3]
The composition of a standard OFF file is as follows: [4]
The four-dimensional OFF format, most notably used by Stella4D, which allows visualization of four-dimensional objects, has a few minor differences: [5]
Comments are marked with a pound sign (#): these are not read by the software.
OFF # cube.off # A cube 8 6 12 1.0 0.0 1.4142 0.0 1.0 1.4142 -1.0 0.0 1.4142 0.0 -1.0 1.4142 1.0 0.0 0.0 0.0 1.0 0.0 -1.0 0.0 0.0 0.0 -1.0 0.0 4 0 1 2 3 255 0 0 #red 4 7 4 0 3 0 255 0 #green 4 4 5 1 0 0 0 255 #blue 4 5 6 2 1 0 255 0 4 3 2 6 7 0 0 255 4 6 5 4 7 255 0 0