/*
	複数画面退避関数
*/

#include	<Normlib.h>
#include	<okome.h>

void OKM_gth(int x1, int y1, int x2, int y2, int f)
{
	static int yz=0;
	int i, j, k;
	char w[1152];
	k = 1152 / (x2-x1+1);
	j = (((x2-x1+1)*k+383)/384);
	if (f)
	{				/*	1:退避	*/
		for ( i = 0; i <= (y2-y1+k-1)/k; i++ )
		{
			egbget( x1, y1+i*k, x2, y1+(i+1)*k-1, w );
			egbput( 640, yz+j*i, 1023, yz+j*(i+1)-1, w );
		}
		yz+=(y2-y1+1)*j;
	}	else	{	/*	0:復元	*/
		yz-=(y2-y1+1)*j;
		for ( i = 0; i <= (y2-y1+k-1)/k; i++ )
		{
			egbget( 640, yz+j*i, 1023, yz+j*(i+1)-1, w );
			egbput( x1, y1+i*k, x2, y1+(i+1)*k-1, w );
		}
	}
}