mipoly.c revision 4642e01f 
1/***********************************************************
2
3Copyright 1987, 1998  The Open Group
4
5Permission to use, copy, modify, distribute, and sell this software and its
6documentation for any purpose is hereby granted without fee, provided that
7the above copyright notice appear in all copies and that both that
8copyright notice and this permission notice appear in supporting
9documentation.
10
11The above copyright notice and this permission notice shall be included in
12all copies or substantial portions of the Software.
13
14THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
17OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
18AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
19CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
20
21Except as contained in this notice, the name of The Open Group shall not be
22used in advertising or otherwise to promote the sale, use or other dealings
23in this Software without prior written authorization from The Open Group.
24
25
26Copyright 1987 by Digital Equipment Corporation, Maynard, Massachusetts.
27
28                        All Rights Reserved
29
30Permission to use, copy, modify, and distribute this software and its
31documentation for any purpose and without fee is hereby granted,
32provided that the above copyright notice appear in all copies and that
33both that copyright notice and this permission notice appear in
34supporting documentation, and that the name of Digital not be
35used in advertising or publicity pertaining to distribution of the
36software without specific, written prior permission.
37
38DIGITAL DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING
39ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL
40DIGITAL BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR
41ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
42WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
43ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
44SOFTWARE.
45
46******************************************************************/
47/*
48 *  mipoly.c
49 *
50 *  Written by Brian Kelleher; June 1986
51 *
52 *  Draw polygons.  This routine translates the point by the
53 *  origin if pGC->miTranslate is non-zero, and calls
54 *  to the appropriate routine to actually scan convert the
55 *  polygon.
56 */
57#ifdef HAVE_DIX_CONFIG_H
58#include <dix-config.h>
59#endif
60
61#include <X11/X.h>
62#include "windowstr.h"
63#include "gcstruct.h"
64#include "pixmapstr.h"
65#include "mi.h"
66#include "regionstr.h"
67
68
69_X_EXPORT void
70miFillPolygon( DrawablePtr dst, GCPtr pgc,
71		int shape, int mode,
72		int count, DDXPointPtr pPts)
73{
74    int			i;
75    int			xorg, yorg;
76    DDXPointPtr 	ppt;
77
78    if (count == 0)
79	return;
80
81    ppt = pPts;
82    if (pgc->miTranslate)
83    {
84	xorg = dst->x;
85	yorg = dst->y;
86
87        if (mode == CoordModeOrigin)
88        {
89	        for (i = 0; i<count; i++)
90                {
91	            ppt->x += xorg;
92	            ppt++->y += yorg;
93	        }
94        }
95        else
96        {
97	    ppt->x += xorg;
98	    ppt++->y += yorg;
99	    for (i = 1; i<count; i++)
100            {
101	        ppt->x += (ppt-1)->x;
102	        ppt->y += (ppt-1)->y;
103	        ppt++;
104	    }
105        }
106    }
107    else
108    {
109	if (mode == CoordModePrevious)
110        {
111	    ppt++;
112	    for (i = 1; i<count; i++)
113            {
114	        ppt->x += (ppt-1)->x;
115	        ppt->y += (ppt-1)->y;
116	        ppt++;
117	    }
118        }
119    }
120    if (shape == Convex)
121	miFillConvexPoly(dst, pgc, count, pPts);
122    else
123	miFillGeneralPoly(dst, pgc, count, pPts);
124}
125