G'MIC - GREYC's Magic for Image Computing: A Full-Featured Open-Source Framework for Image Processing
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A Full-Featured Open-Source Framework for Image Processing

Latest stable version: 4.0.1 (2026/07/02)

Reference
Table of Contents  ▸  List of Commands  ▸  3D Meshes  ▸  focal3d◀  extrude3d    |    fov3d  ▶

focal3d

Arguments:

  • focal

Description:

Set 3D focal.

(equivalent to shortcut command f3d).


Set focal to 0 to enable parallel projection (instead of perspective).
Set negative focal will disable 3D sprite zooming.

Default values:

focal=700.

Example of use:

repeat 5 { torus3d 100,30 rotate3d[-1] 1,1,0,60 focal3d {$<*90} snapshot3d[-1] 400 } remove[0]

Command: repeat 5 { torus3d 100,30 rotate3d[-1] 1,1,0,60 focal3d {$<*90} snapshot3d[-1] 400 } remove[0]
Command: repeat 5 { torus3d 100,30 rotate3d[-1] 1,1,0,60 focal3d {$<*90} snapshot3d[-1] 400 } remove[0]
Command: repeat 5 { torus3d 100,30 rotate3d[-1] 1,1,0,60 focal3d {$<*90} snapshot3d[-1] 400 } remove[0]
Command: repeat 5 { torus3d 100,30 rotate3d[-1] 1,1,0,60 focal3d {$<*90} snapshot3d[-1] 400 } remove[0]
G'MIC - GREYC's Magic for Image Computing: A Full-Featured Open-Source Framework for Image Processing

G'MIC is an open-source software distributed under the CeCILL free software licenses (LGPL-like and/or
GPL-compatible). Copyrights (C) Since July 2008, David Tschumperlé - GREYC UMR CNRS 6072, Image Team.