xenocara/xserver/mi/mipoly.c

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

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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
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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"

void
miFillPolygon(DrawablePtr dst, GCPtr pgc,
              int shape, int 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);
}