Re: composites circle
Lawrence D'Oliveiro <[email protected]>
| Newsgroups | gmane.comp.lib.cairo |
|---|---|
| Organization | Geek Central |
| Message-ID | <[email protected]> |
On Sun, 17 Jan 2016 10:58:06 +0100, Uli Schlachter wrote:
> #include <cairo.h>
> #include <math.h>
>
> #define WIDTH 75
> #define HEIGHT 170
>
> static void circle(cairo_t *cr, double xc, double yc, double radius)
> {
> cairo_arc(cr, xc, yc, radius, 0, 2 * M_PI);
> }
> [etc]
Just a note that M_PI is not a part of standard C. You need to prefix
the include of math.h with
#define _XOPEN_SOURCE 500
to ensure it is defined.
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