Usage: CreateIcosahedron [-rad r] [-rd recDepth] [-ld linDepth]
                         [-ctr ctr] [-prefix fout] [-help]

   -rad r: size of icosahedron. (optional, default 100)
        The edge length l = 4 r / sqrt(10+2sqrt(5))
        The area a = 5 sqrt(3) l^2
        The volume v = 5/12 (3+sqrt(5)) l^3

   -rd recDepth: recursive (binary) tessellation depth for icosahedron
       (optional, default:3)
       (recommended to approximate number of nodes in brain: 6
       let rd2 = 2 * recDepth
       Nvert = 2 + 10 * 2^rd2
       Ntri  = 20 * 2^rd2
       Nedge = 30 * 2^rd2

   -ld linDepth: number of edge divides for linear icosahedron tessellation
       (optional, default uses binary tessellation).
       Nvert = 2 + 10 * linDepth^2
       Ntri  = 20 * linDepth^2
       Nedge = 30 * linDepth^2

   -min_nodes MIN_NODES: Automatically select the -ld value which produces an
                         icosahedron of at least MIN_NODES nodes.

   -nums: output the number of nodes (vertices), triangles, edges,
          total volume and total area then quit

   -nums_quiet: same as -nums but less verbose. For the machine in you.

   -ctr ctr: coordinates of center of icosahedron.
       (optional, default 0,0,0)

   -tosphere: project nodes to sphere.

   -prefix fout: prefix for output files.
       (optional, default CreateIco)
                 The surface is written out in FreeSurfer's .asc
                 format by default. To change that, include a
                 valid extension to the prefix such as: fout.gii

   -help: help message

Compile Date:
   Jun 14 2024

       Brenna D. Argall LBC/NIMH/NIH