1IM_CIRCLE(3)               Library Functions Manual               IM_CIRCLE(3)
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NAME

6       im_circle - draws a circle within an image file
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SYNOPSIS

9       #include <vips/vips.h>
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11       int im_circle(im, cx, cy, radius, intensity)
12       IMAGE *im;
13       int cx, cy;
14       int radius, intensity;
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DESCRIPTION

17       im_circle()  draws  a  circle  on  top of an image pointed by the image
18       descriptor im.  Input im should be one band unsigned char image.
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20       It must be stressed that a call to this function overwrites the content
21       of  the original image at the points corresponding to the drawn circle.
22       The centre of the circle is at point (cx, cy) and has radius radius and
23       the  intensity  of  the  produced  circle is given by the int intensity
24       (between 0 and 255).  If the circle does not fit in the original image,
25       an error code is returned.
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RETURN VALUE

28       The function returns 0 on success and -1 on error.
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SEE ALSO

31       im_line(3).
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34       N. Dessipris
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AUTHOR

37       N. Dessipris - 10/05/1991
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41                                  10 May 1991                     IM_CIRCLE(3)
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