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: 3.6.6        Current pre-release: 3.7.0 (2026/02/09)

Reference
Table of Contents  ▸  List of Commands  ▸  Image Drawing  ▸  spiralbw◀  sierpinski    |    tetraedron_shade  ▶

spiralbw

Arguments:

  • width>0,_height>0,_is_2dcoords={ 0:No | 1:Yes }

Description:

Input a 2D rectangular spiral image with specified size.

Default values:

height=width and is_2dcoords=0.

Examples of use:

• Example #1

spiralbw 16

Command: spiralbw 16

• Example #2

image.jpg spiralbw {[w,h]},1 +warp[0] [1],0,1,1 +warp[2] [1],2,1,1

Command: image.jpg spiralbw {[w,h]},1 +warp[0] [1],0,1,1 +warp[2] [1],2,1,1
Command: image.jpg spiralbw {[w,h]},1 +warp[0] [1],0,1,1 +warp[2] [1],2,1,1
Command: image.jpg spiralbw {[w,h]},1 +warp[0] [1],0,1,1 +warp[2] [1],2,1,1
Command: image.jpg spiralbw {[w,h]},1 +warp[0] [1],0,1,1 +warp[2] [1],2,1,1
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.