ref: c76cc12a1799ce214b07882eb6f4ab0906c0151b
dir: /sys/src/cmd/plot/libplot/sbox.c/
#include "mplot.h" void sbox(double xx0, double yy0, double xx1, double yy1){ int x0=SCX(xx0), y0=SCY(yy0), x1=SCX(xx1), y1=SCY(yy1); int t; if(x1<x0){ t=x0; x0=x1; x1=t; } if(y1<y0){ t=y0; y0=y1; y1=t; } if(x0<clipminx) x0=clipminx; if(y0<clipminy) y0=clipminy; if(x1>clipmaxx) x1=clipmaxx; if(y1>clipmaxy) y1=clipmaxy; if(x1<x0 || y1<y0) return; m_clrwin(x0, y0, x1, y1, e1->backgr); }