.TRI File Extension

File Type 1

FaceGen Polygonal Model File

Developer Singular Inversions
3.9  |  13 Votes
Category 3D Image Files
Format Binary

What is a TRI file?

3D model file created by FaceGen, an application used to create 3D human faces; contains a polygonal mesh for a human head; may also contain morphs, which are used for facial animations; often used for creating video game characters.

More Information

TRI files are used by Bethesda Softworks video games such as FallOut 3 and The Elder Scrolls IV: Oblivion.

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Programs that open or reference TRI files

Updated December 13, 2010
File Type 2

Triangle Mesh File

Developer N/A
2.7  |  3 Votes
Category 3D Image Files
Format Text

What is a TRI file?

3D mesh file created in the text-based TRI format; stores the mesh using x, y, z coordinate vertices and triangular polygons, which reference the declared vertices; used for constructing surfaces for 3D models.

More Information

There are some variations of the TRI file format, but the most basic version contains a one-line header followed by the vertices and triangles, where the header specifies the number of vertices and triangles.

TRI files are often used by scientific visualization or molecular modeling applications.

Programs that open TRI files

Included with OS
Included with OS
Updated December 5, 2018

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