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Annotation of 43BSDTahoe/usr.lib/libplot/grn/arc.c, revision 1.1

1.1     ! root        1: /*
        !             2:  * Copyright (c) 1980, 1986 Regents of the University of California.
        !             3:  * All rights reserved.  The Berkeley software License Agreement
        !             4:  * specifies the terms and conditions for redistribution.
        !             5:  */
        !             6: 
        !             7: #ifndef lint
        !             8: static char sccsid[] = "@(#)arc.c      6.1 (Berkeley) 8/29/86";
        !             9: #endif not lint
        !            10: 
        !            11: #include "grnplot.h"
        !            12: 
        !            13: 
        !            14: arc(x,y,x0,y0,x1,y1)
        !            15: {
        !            16:        extern double atan2();
        !            17: 
        !            18:        if (!ingrnfile) erase();
        !            19:        endvector();
        !            20:        printf("ARC\n");
        !            21:        outxy(x,y);
        !            22:        outxy(x0,y0);
        !            23:        outxy(x1,y1);
        !            24:        printf("*\n%d %d\n0\n",linestyle,(int) (atan2(x1-x,y1-y)-atan2(x0-x,y0-y)));
        !            25:        curx =x;
        !            26:        cury =y;
        !            27: }

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