tline.c - plan9port - [fork] Plan 9 from user space
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       ---
       tline.c (731B)
       ---
            1 #include <u.h>
            2 #include <libc.h>
            3 #include <draw.h>
            4 
            5 void
            6 line(Image *dst, Point p0, Point p1, int end0, int end1, int radius, Image *src, Point sp)
            7 {
            8         lineop(dst, p0, p1, end0, end1, radius, src, sp, SoverD);
            9 }
           10 
           11 void
           12 lineop(Image *dst, Point p0, Point p1, int end0, int end1, int radius, Image *src, Point sp, Drawop op)
           13 {
           14         uchar *a;
           15 
           16         _setdrawop(dst->display, op);
           17 
           18         a = bufimage(dst->display, 1+4+2*4+2*4+4+4+4+4+2*4);
           19         if(a == 0){
           20                 fprint(2, "image line: %r\n");
           21                 return;
           22         }
           23         a[0] = 'L';
           24         BPLONG(a+1, dst->id);
           25         BPLONG(a+5, p0.x);
           26         BPLONG(a+9, p0.y);
           27         BPLONG(a+13, p1.x);
           28         BPLONG(a+17, p1.y);
           29         BPLONG(a+21, end0);
           30         BPLONG(a+25, end1);
           31         BPLONG(a+29, radius);
           32         BPLONG(a+33, src->id);
           33         BPLONG(a+37, sp.x);
           34         BPLONG(a+41, sp.y);
           35 }