hcvp2.c

nucleus 文件系统,内核和彩色图形系统,在小系统上非常好用

/*************************************************************************/
/*                                                                       */
/*         Copyright (c) 1997 - 1999 Accelerated Technology, Inc.        */
/*                                                                       */
/* PROPRIETARY RIGHTS of Accelerated Technology are involved in the      */
/* subject matter of this material.  All manufacturing, reproduction,    */
/* use, and sales rights pertaining to this subject matter are governed  */
/* by the license agreement.  The recipient of this software implicitly  */
/* accepts the terms of the license.                                     */
/*                                                                       */
/*************************************************************************/

/*************************************************************************/
/*                                                                       */
/* FILE NAME                                            VERSION          */
/*                                                                       */
/*      HCVP2.c                                          1.9             */
/*                                                                       */
/* COMPONENT                                                             */
/*                                                                       */
/*      All                                                              */
/*                                                                       */
/* DESCRIPTION                                                           */
/*                                                                       */
/*      This file contains the Lcl2GblPt & Lcl2GblRect functions.        */
/*                                                                       */
/* AUTHOR                                                                */
/*                                                                       */
/*      Robert G. Burrill, Accelerated Technology, Inc.                  */
/*                                                                       */
/* DATA STRUCTURES                                                       */
/*                                                                       */
/*      None                                                             */
/*                                                                       */
/* FUNCTIONS                                                             */
/*                                                                       */
/*      None                                                             */
/*                                                                       */
/* DEPENDENCIES                                                          */
/*                                                                       */
/*      None                                                             */
/*                                                                       */
/* HISTORY                                                               */
/*                                                                       */
/*         NAME            DATE                    REMARKS               */
/*                                                                       */
/*                                                                       */
/*************************************************************************/

#include "meta_wnd.h"
#include "metconst.h"    /* MetaWINDOW Constant & Stucture Definitions */
#include "metports.h"    /* MetaWINDOW Port & Bitmap Definitions */
#include "grafdata.h"
#include "metmacs3.h"


/* Function Lcl2GblPt converts the specified point, argPT, from the current
grafPort's local coordinate system into a global bitmap coordinate value.
Global bitmap coordinates are referenced with the (0,0) origin in the
upper-left corner of the bitmap. */
void Lcl2GblPt(point *argPT)
{

	argPT->X += (short) localXconst;	/* add offsets */
	argPT->Y ^= (short) localYinvert;	/* conditionally mirror Y */
	argPT->Y += (short) localYconst;

	return;
}


/* Function Lcl2GblRect converts the specified rectangle, argR, from the
current grafPort's local coordinate system into a global bitmap coordinate
value.  Global bitmap coordinates are referenced with the (0,0) origin in
the upper-left corner of the bitmap. */
void Lcl2GblRect(rect *argR)
{
	short tempY;

	argR->Xmin += (short) localXconst;	/* add offsets */
	argR->Xmax += (short) localXconst;
	argR->Ymin ^= (short) localYinvert;	/* conditionally mirror Y */
	argR->Ymax ^= (short) localYinvert;
	argR->Ymin += (short) localYconst;
	argR->Ymax += (short) localYconst;
			       
	/* test Y orientation */
	if ((grafPort.portFlags & pfUpper))
	{	/* local is lower corner */
		tempY = argR->Ymax;
		argR->Ymax = argR->Ymin;
		argR->Ymin = tempY;
	}

	return;
}