ref: 21947578303cdb0fcb4b0cdfe80aa9dab5f6b447
dir: /libdraw/line.c/
#include "lib9.h" #include "draw.h" void line(Image *dst, Point p0, Point p1, int end0, int end1, int radius, Image *src, Point sp) { lineop(dst, p0, p1, end0, end1, radius, src, sp, SoverD); } void lineop(Image *dst, Point p0, Point p1, int end0, int end1, int radius, Image *src, Point sp, Drawop op) { uchar *a; _setdrawop(dst->display, op); a = bufimage(dst->display, 1+4+2*4+2*4+4+4+4+4+2*4); if(a == 0){ _drawprint(2, "image line: %r\n"); return; } a[0] = 'L'; BPLONG(a+1, dst->id); BPLONG(a+5, p0.x); BPLONG(a+9, p0.y); BPLONG(a+13, p1.x); BPLONG(a+17, p1.y); BPLONG(a+21, end0); BPLONG(a+25, end1); BPLONG(a+29, radius); BPLONG(a+33, src->id); BPLONG(a+37, sp.x); BPLONG(a+41, sp.y); }