FreonLinux/system/tinyx/mi/mipoly.c

/***********************************************************

Copyright 1987, 1998  The Open Group

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Copyright 1987 by Digital Equipment Corporation, Maynard, Massachusetts.

                        All Rights Reserved

Permission to use, copy, modify, and distribute this software and its
documentation for any purpose and without fee is hereby granted,
provided that the above copyright notice appear in all copies and that
both that copyright notice and this permission notice appear in
supporting documentation, and that the name of Digital not be
used in advertising or publicity pertaining to distribution of the
software without specific, written prior permission.

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******************************************************************/
/*
 *  mipoly.c
 *
 *  Written by Brian Kelleher; June 1986
 *
 *  Draw polygons.  This routine translates the point by the
 *  origin if pGC->miTranslate is non-zero, and calls
 *  to the appropriate routine to actually scan convert the
 *  polygon.
 */
#ifdef HAVE_DIX_CONFIG_H
#include <dix-config.h>
#endif

#include <X11/X.h>
#include "windowstr.h"
#include "gcstruct.h"
#include "pixmapstr.h"
#include "mi.h"
#include "regionstr.h"


_X_EXPORT void
miFillPolygon(dst, pgc, shape, mode, count, pPts)
    DrawablePtr		dst;
    GCPtr	pgc;
    int			shape, mode;
    int	count;
    DDXPointPtr		pPts;
{
    int			i;
    int	xorg, yorg;
    DDXPointPtr ppt;

    if (count == 0)
	return;

    ppt = pPts;
    if (pgc->miTranslate)
    {
	xorg = dst->x;
	yorg = dst->y;

        if (mode == CoordModeOrigin)
        {
	        for (i = 0; i<count; i++)
                {
	            ppt->x += xorg;
	            ppt++->y += yorg;
	        }
        }
        else
        {
	    ppt->x += xorg;
	    ppt++->y += yorg;
	    for (i = 1; i<count; i++)
            {
	        ppt->x += (ppt-1)->x;
	        ppt->y += (ppt-1)->y;
	        ppt++;
	    }
        }
    }
    else
    {
	if (mode == CoordModePrevious)
        {
	    ppt++;
	    for (i = 1; i<count; i++)
            {
	        ppt->x += (ppt-1)->x;
	        ppt->y += (ppt-1)->y;
	        ppt++;
	    }
        }
    }
    if (shape == Convex)
	miFillConvexPoly(dst, pgc, count, pPts);
    else
	miFillGeneralPoly(dst, pgc, count, pPts);
}