fov

A command-line utility for calculating horizontal or vertical FOV values for a given aspect ratio. This is especially useful when tweaking the field of view value in various 3D applications, such as games.

Usage

Examples

Determine the vertical FOV from an horizontal FOV

$ fov 90h 4:3
Horizontal FOV  90.00°
Vertical FOV    73.74°
Aspect ratio    4:3

Determine the horizontal FOV from a vertical FOV

$ fov 70v 16:9
Horizontal FOV  102.45°
Vertical FOV    70.00°
Aspect ratio    16:9

Convert an horizontal FOV to a wider aspect ratio

$ fov 90h 4:3 16:9
                Orig.   Converted
Horizontal FOV  90.00°  106.26°
Vertical FOV    73.74°  73.74°
Aspect ratio    4:3     16:9

Reference

NAME:
   fov - Calculate horizontal or vertical FOV values for a given aspect ratio

USAGE:
   fov <FOV><h|v> <aspect ratio> [new aspect ratio]

VERSION:
   0.0.1

COMMANDS:
     help, h  Shows a list of commands or help for one command

GLOBAL OPTIONS:
   --help, -h     show help
   --version, -v  print the version

Resources

• Explanation of common FOV scaling modes such as Hor+, Vert-, …
• Field of view in video games on Wikipedia

License

Copyright © 2018-2020 Hugo Locurcio and contributors

Unless otherwise specified, files in this repository are licensed under the MIT license, see LICENSE.md for more information.