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Usage: off_normals [options] [input_file]
Display normals of faces, implicit edges, and vertices
If input_file is not given the program reads from standard input.
Options
-h,--help this help message (run 'off_util -H help' for general help)
--version version information
-u unit normals (positional normals otherwise)
-e connect to element centroid
-p <opt> force polarity. o - set all outward, i - set all inward
r - reverse both inward and outward
-i <elms> include normals. The element string can include o, i and h
to show, respectively, outward, inward and hemispherical
note: exlusion occurs before -p (default: oih)
-s <elms> include elements. The element string can include v, e and f
to show, respectively, vertices, edges and faces (default: f)
-d <opt> delete elements. f - delete faces of unincluded normals
a - delete all of original model
-c <opts> average pattern string for edge and vertex normals. Done before -p
r - raw, o - outward, i - inward, u - unit (default: r)
-a alternate calculation for vertex normals
-C <xyz> center of model, in form 'X,Y,Z' (default: centroid)
-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)
Coloring Options (run 'off_util -H color' for help on color formats)
-O <col> outward normal vertex color
-I <col> inward normal vertex color
default: vertex color is negative of outward col
-H <col> hemispherical normal vertex color (default: gray50)
-E <col> normal vector color. connected to element centroid
default: color of normal vertex
key word: r take random color
-B <col> normal vector base color. color at element centroid
key word: b take color of element (default)
key word: n take color of normal vertex
off_normals dod -O white | antiview -v 0.075
off_util -O n rt | off_normals -e -E r | antiview -v 0.075 -x f
off_normals icosidodecahedron -s e -O white -e | off_color -r A0.3,f | antiview -v 0.02
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