1arc(3) Allegro manual arc(3)
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6 arc - Draws a circular arc. Allegro game programming library.
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9 #include <allegro.h>
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12 void arc(BITMAP *bmp, int x, y, fixed ang1, ang2, int r, int color);
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15 Draws a circular arc with centre x, y and radius r, in an anticlockwise
16 direction starting from the angle a1 and ending when it reaches a2.
17 These values are specified in 16.16 fixed point format, with 256 equal
18 to a full circle, 64 a right angle, etc. Zero is to the right of the
19 centre point, and larger values rotate anticlockwise from there. Exam‐
20 ple:
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22 /* Draw a black arc from 4 to 1 o'clock. */
23 arc(screen, SCREEN_W/2, SCREEN_H/2,
24 itofix(-21), itofix(43), 50, makecol(0, 0, 0));
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28 circle(3), ellipse(3), drawing_mode(3), makecol(3)
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32Allegro version 4.2.2 arc(3)