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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 -n <n/d> n-icon of order n. n must be 3 or greater (default: 4) use d to make star n-icon. d less than 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 -c and m2 have no effect with hybrids -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) -x <elms> t and b to exclude top and/or bottom polygons if they exist v, e and f to remove OFF faces with one vertex (vertices), two-vertices (edges) and three or more vertices (faces) -A place a north and south pole in top and bottom if they exist only valid if m2<m. Not valid with -c h -c <clse> close open model if m2<m. Valid values h or v h = horizontal closure, v = vertical closure -l <lim> minimum distance for unique vertex locations as negative exponent (default: 12 giving 1e-12) -I info on current n-icon -o <file> write output to file (default: write to standard output) -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 -r override inner radius (-z 2) -R override outer radius (-z 2) -a angle (-z 3) 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 key word: none - sets no color (default: s) lower case outputs map indexes. upper case outputs color values s - color circuits with colors using list sequentially t - color circuits with colors using circuit numbers l - color latitudinally m - color longitudinally b - checkerboard with first two colors in face 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 note: z is also the twist plane o - use first eight colors per xyz octants c - color by compound -S color circuits symmetrically when using coloring method s or t -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 key word: none - sets no color (default: Q) key word: Q - defer coloring all edges to option Q or use the same letter options specified in -f -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 key word: none - sets no color (default: invisible) -Y for n/d shells, when showing edges, show indented edges -m <maps> color maps to be tried in turn. (default: map_red:darkorange1: yellow:darkgreen:cyan:blue:magenta:white:grey:black%) optionally followed by elements to map from v, e or f (default: vef) -D <col> default color for uncolored elements (default: darkgrey) -X <int> flood fill stop. used with circuit or compound coloring (-z 2 or 3) use 0 (default) to flood fill entire model. if -X is not 0 then return 1 from program if entire model has been colored Surface Count Reporting (options above igonored) -J <type> list n-icons with more than one surface. Valid values for type n = point cut even order n_icons s = side cut even order n-icons (surfaces > 2) 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) -K <k,k2> range of n-icons to list for multiple surfaces -L long form report -Z filter out case 2 types
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 -J n -K 3,30 -L
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