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IRIX Base Documentation 1998 November
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IRIX 6.5.2 Base Documentation November 1998.img
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cat6
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halftone.z
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halftone
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Text File
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1998-10-30
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67 lines
HHHHAAAALLLLFFFFTTTTOOOONNNNEEEE((((6666DDDD)))) HHHHAAAALLLLFFFFTTTTOOOONNNNEEEE((((6666DDDD))))
NNNNAAAAMMMMEEEE
halftone - half-tone an image
SSSSYYYYNNNNOOOOPPPPSSSSIIIISSSS
hhhhaaaallllffffttttoooonnnneeee iiiinnnniiiimmmmaaaaggggeeee oooouuuuttttiiiimmmmaaaaggggeeee ffffrrrreeeeqqqq aaaannnngggglllleeee [[[[ppppaaaatttttttteeeerrrrnnnnnnnnoooo]]]]
DDDDEEEESSSSCCCCRRRRIIIIPPPPTTTTIIIIOOOONNNN
_h_a_l_f_t_o_n_e converts the input image into a halftoned image, using
Hollaway's technique. The density of the halftone screen is controlled
by the floating point value freq. Smaller values of "freq" make a larger
dot pattern. The angle of the halftone patterns is controlled by the
argument "angle". The integer argument "patternno" selects the halftone
pattern. 0 is the default and creates a dot pattern. A pattern value of
1 will create a line screen, while 2, 3, 4, and 5 create other halftone
patterns.
PPPPaaaaggggeeee 1111