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1 #include <u.h>2 #include <libc.h>3 #include <draw.h>5 int6 drawreplxy(int min, int max, int x)7 {8 int sx;10 sx = (x-min)%(max-min);11 if(sx < 0)12 sx += max-min;13 return sx+min;14 }16 Point17 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 }