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im_sines(3)                                                        im_sines(3)




NAME

       im_sines - creates a spatial sine wave form


SYNOPSIS

       #include <vips/vips.h>

       int im_sines(image, xsize, ysize, horfreq, verfreq)
       IMAGE *image;
       int xsize, ysize;
       double horfreq, verfreq;


DESCRIPTION

       im_sines() creates a float one band image of the a sine waveform in two
       dimensions.  The sizes of the created image are xsize  by  ysize.   The
       number of horizontal and vertical spatial frequencies are determined by
       the variables horfreq and verfreq respectively.  The  function  is  the
       base for creating displayable sine waves and square waves in two dimen-
       sions.


RETURN VALUE

       The function returns 0 on success and -1 on error.


SEE ALSO

       im_grey(3).


COPYRIGHT

       N. Dessipris


AUTHOR

       N. Dessipris - 10/05/1991



                                  10 May 1991                      im_sines(3)

im_sines 7.14.5 - Generated Tue Sep 9 06:39:01 CDT 2008
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