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Usage: n_icons [options] Creates Sphericon like Polyhedra. Also known as Streptohedra Options -h,--help this help message (run 'off_util -H help' for general help) --version version information -I information on current n-icon -l <lim> minimum distance for unique vertex locations as negative exponent (default: 12 giving 1e-12) -o <file> write output to file (default: write to standard output) Program Options -n <n/d> n-icon of order n. n must be 3 or greater (default: 4) use d to make star n-icon. d may not equal n -t <twst> number of twists. Can be negative, positive or 0 (default: 1) -s side-cut of even order n-icon (default is point-cut) -H hybrid of even order n-icon -a angle (-z 3 only) -r override inner radius (-z 2 only) -R override outer radius (-z 2 only) -b don't split bowtie faces for twisting (-z 3, -t 0 only) -z <mthd> construction method 1 - n/d must be co-prime. bow-ties can occur (default for d=1) 2 - n/d compounds allowed. shell model (default for d>1) 3 - n/d compounds allowed. No bow-ties (default if angle not 0) Scene Options -M <m,m2> longitudes of model of m sides with optional m2 of m sides showing m may be odd, 3 or greater if twist is 0 (default: 36,36) -g make m2 longitudes invisible instead of deletion (no -c) -A place a north and south pole in top and bottom if they exist (twist 0 or n/2, causes indentation of caps with side cut) -c <clse> close open model if m2<m. Valid values h or v (-z 1,2) h = horizontal closure, v = vertical closure -x <elms> v, e and f to remove OFF faces with one vertex (vertices), two-vertices (edges) and three or more vertices (faces) E - if face is invisible, associated edge is made invisible -Y for n/d shells, when showing edges, show indented edges -W add symmetry polygon (-f S,C or -e S) Coloring Options (run 'off_util -H color' for help on color formats) -f <mthd> mthd is face coloring method. The coloring is done before twist keyword: none - sets no color S - color by symmetry polygon (default) s - color by circuits algorithm (n/d must be co-prime) f - color circuits with flood fill (-z 2,3 any n/d) C - color by compound c - color by compound with flood fill l - color latitudinally m - color longitudinally b - checkerboard with first two colors in the color list n - use each color in succession x - first two colors based on sign of x y - first two colors based on sign of y z - first two colors based on sign of z (z is the twist plane) o - use first eight colors per xyz octants -S color circuits symmetrically for coloring method s,f,S (even n) -C color continuous and discontinuous circuits with first two colors in the color list (-I required, s,f,S coloring, no -S, no -z 2) -T <tran> face transparency. valid range from 0 (invisible) to 255 (opaque) -O <strg> face transparency pattern string. valid values 0 -T value suppressed, 1 -T value applied (default: '1') -e <mthd> mthd is edge coloring method. The coloring is done before twist keyword: none - sets no color keyword: Q - defer coloring all edges to option Q (default) or use the same letter options specified in -f, except c, F - color edges with average adjoining face color -U <tran> edge transparency. valid range from 0 (invisible) to 255 (opaque) -P <strg> edge transparency pattern string. valid values 0 -U value suppressed, 1 -U value applied (default: '1') -Q <col> color given to uncolored edges and vertices of final model keyword: none - sets no color (default: invisible) -G <c,e> default color c for uncolored elements e (default: darkgray,ef) keyword: none - sets no color. elements e can include e or f -X <int> flood fill stop. used with circuit or compound coloring (-f f,c) use 0 (default) to flood fill entire model. if -X is not 0 then return 1 from program if entire model has been colored -m <maps> color maps to be tried in turn. (default: m1, for -C, m2) keyword m1: red,darkorange1,yellow,darkgreen,cyan,blue,magenta, white,gray50,black keyword m2: white,gray50 (special map for -C) optionally followed by elements from e or f (default: ef) Surface (or Compound) Count Reporting (options above ignored) -L <type> types of n-icons to list. Valid values for type p = point cut even order n_icons s = side cut even order n-icons o = odd order n_icons h = hybrids (all) i = hybrids (where N/2 is even) j = hybrids (where N/2 is odd) k = hybrids (where N/4 is even) l = hybrids (where N/4 is odd) -N <n,n2> range of n-icons to list. n > 2 -D <int> set d of n/d for the report (default: 1) -K <k,k2> range of surfaces (or compounds) to list. k > 0 (default: 2,1000) -J long form report -Z filter out case 2 types (surfaces only) -B list compounds instead of circuits
n_icons | antiview
n_icons -s | antiview
n_icons -H | antiview
n_icons -n 20 -t 5 -f s | antiview
n_icons -n 20 -t 5 -f s -m map_red:orange:yellow% | antiview
n_icons -n 20 -t 5 -f s -m map_red:orange:yellow% -T 128 | antiview
n_icons -n 30 -t 5 -f n -m map_white%,f -e s | antiview -e 0.1 -v 0.1
n_icons -n 12/4 -t 2 -f c | antiview
n_icons -n 12/4 -t 2 -f c -z 2 -M 36,27 | antiview
n_icons -n 12/4 -t 2 -f c -z 3 -M 36,27 | antiview
n_icons -L p -N 3,30 -J
n_icons -L h -N 3,30 -K 2,100 -D 3 -J -B
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