#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);}