30 lines
796 B
Groff
30 lines
796 B
Groff
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.TH IM_SINES 3 "10 May 1991"
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.SH NAME
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im_sines \- creates a spatial sine wave form
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.SH SYNOPSIS
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.B #include <vips/vips.h>
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.B int im_sines(image, xsize, ysize, horfreq, verfreq)
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.br
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.B IMAGE *image;
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.br
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.B int xsize, ysize;
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.br
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.B double horfreq, verfreq;
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.SH DESCRIPTION
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.B im_sines()
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creates a float one band image of the a sine waveform in two dimensions.
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The sizes of the created image are xsize by ysize. The number of
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horizontal and vertical spatial frequencies are determined by the variables
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horfreq and verfreq respectively. The function is the base for creating
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displayable sine waves and square waves in two dimensions.
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.SH RETURN VALUE
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The function returns 0 on success and -1 on error.
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.SH SEE\ ALSO
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im_grey(3).
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.SH COPYRIGHT
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.br
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N. Dessipris
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.SH AUTHOR
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N. Dessipris \- 10/05/1991
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