line2.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          */
/*                                                                       */
/*      LINE2.c                                          1.9             */
/*                                                                       */
/* COMPONENT                                                             */
/*                                                                       */
/*      All                                                              */
/*                                                                       */
/* DESCRIPTION                                                           */
/*                                                                       */
/*      This file contains the POLYSEGMENT function.                     */
/*                                                                       */
/* 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"


/* Procedure POLYSEGMENT draws a series of disconnected line segments defined
in SEGLIST. SEGCNT specifies the number of line segments in the SEGLIST
array. The current port pen attributes (pen-size, pen-pattern, rasterOp,
etc.) are used in drawing the lines. */

void PolySegment( short SEGCNT, segPts *SEGLIST )
{
	long savedList;					/* pointer to current blitList */
	void (*lineExecPntr)();

	lineExecPntr = (void (*)()) lineExecIDV;

	grafBlit.blitCnt = SEGCNT;		/* pass count to blitRcd */
	savedList = grafBlit.blitList;	/* save current blitList */
	grafBlit.blitList = (long) SEGLIST;	/* load passed blitList */
	lineExecPntr(&grafBlit);		/* call the current line routine with the 
									default blitRcd */
	grafBlit.blitList = savedList;	/* restore saved blitList */
	grafBlit.blitCnt = 1;			/* reset count to 1*/
	return;
}