tpoly.c - plan9port - [fork] Plan 9 from user space
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       ---
       tpoly.c (462B)
       ---
            1 #include <u.h>
            2 #include <libc.h>
            3 #include <draw.h>
            4 #include <memdraw.h>
            5 
            6 void
            7 mempoly(Memimage *dst, Point *vert, int nvert, int end0, int end1, int radius, Memimage *src, Point sp, int op)
            8 {
            9         int i, e0, e1;
           10         Point d;
           11 
           12         if(nvert < 2)
           13                 return;
           14         d = subpt(sp, vert[0]);
           15         for(i=1; i<nvert; i++){
           16                 e0 = e1 = Enddisc;
           17                 if(i == 1)
           18                         e0 = end0;
           19                 if(i == nvert-1)
           20                         e1 = end1;
           21                 memline(dst, vert[i-1], vert[i], e0, e1, radius, src, addpt(d, vert[i-1]), op);
           22         }
           23 }