tdrawrepl.c - plan9port - [fork] Plan 9 from user space
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       ---
       tdrawrepl.c (313B)
       ---
            1 #include <u.h>
            2 #include <libc.h>
            3 #include <draw.h>
            4 
            5 int
            6 drawreplxy(int min, int max, int x)
            7 {
            8         int sx;
            9 
           10         sx = (x-min)%(max-min);
           11         if(sx < 0)
           12                 sx += max-min;
           13         return sx+min;
           14 }
           15 
           16 Point
           17 drawrepl(Rectangle r, Point p)
           18 {
           19         p.x = drawreplxy(r.min.x, r.max.x, p.x);
           20         p.y = drawreplxy(r.min.y, r.max.y, p.y);
           21         return p;
           22 }