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/*
*
* Copyright © 2002 Keith Packard, member of The XFree86 Project, Inc.
*
* Permission to use, copy, modify, distribute, and sell this software and its
* documentation for any purpose is hereby granted without fee, 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 Keith Packard not be used in
* advertising or publicity pertaining to distribution of the software without
* specific, written prior permission. Keith Packard makes no
* representations about the suitability of this software for any purpose. It
* is provided "as is" without express or implied warranty.
*
* KEITH PACKARD DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
* EVENT SHALL KEITH PACKARD BE LIABLE FOR ANY SPECIAL, INDIRECT OR
* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
* DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
* TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
* PERFORMANCE OF THIS SOFTWARE.
*/
#ifdef HAVE_DIX_CONFIG_H
#include <dix-config.h>
#endif
#include "scrnintstr.h"
#include "gcstruct.h"
#include "pixmapstr.h"
#include "windowstr.h"
#include "mi.h"
#include "picturestr.h"
#include "mipict.h"
void
miPointFixedBounds (int npoint, xPointFixed *points, BoxPtr bounds)
{
bounds->x1 = xFixedToInt (points->x);
bounds->x2 = xFixedToInt (xFixedCeil (points->x));
bounds->y1 = xFixedToInt (points->y);
bounds->y2 = xFixedToInt (xFixedCeil (points->y));
points++;
npoint--;
while (npoint-- > 0)
{
INT16 x1 = xFixedToInt (points->x);
INT16 x2 = xFixedToInt (xFixedCeil (points->x));
INT16 y1 = xFixedToInt (points->y);
INT16 y2 = xFixedToInt (xFixedCeil (points->y));
if (x1 < bounds->x1)
bounds->x1 = x1;
else if (x2 > bounds->x2)
bounds->x2 = x2;
if (y1 < bounds->y1)
bounds->y1 = y1;
else if (y2 > bounds->y2)
bounds->y2 = y2;
points++;
}
}
void
miTriangleBounds (int ntri, xTriangle *tris, BoxPtr bounds)
{
miPointFixedBounds (ntri * 3, (xPointFixed *) tris, bounds);
}
void
miTriStrip (CARD8 op,
PicturePtr pSrc,
PicturePtr pDst,
PictFormatPtr maskFormat,
INT16 xSrc,
INT16 ySrc,
int npoint,
xPointFixed *points)
{
ScreenPtr pScreen = pDst->pDrawable->pScreen;
PictureScreenPtr ps = GetPictureScreen(pScreen);
xTriangle *tris, *tri;
int ntri;
if (npoint < 3)
return;
ntri = npoint - 2;
tris = malloc(ntri * sizeof (xTriangle));
if (!tris)
return;
for (tri = tris; npoint >= 3; npoint--, points++, tri++)
{
tri->p1 = points[0];
tri->p2 = points[1];
tri->p3 = points[2];
}
(*ps->Triangles) (op, pSrc, pDst, maskFormat, xSrc, ySrc, ntri, tris);
free(tris);
}
void
miTriFan (CARD8 op,
PicturePtr pSrc,
PicturePtr pDst,
PictFormatPtr maskFormat,
INT16 xSrc,
INT16 ySrc,
int npoint,
xPointFixed *points)
{
ScreenPtr pScreen = pDst->pDrawable->pScreen;
PictureScreenPtr ps = GetPictureScreen(pScreen);
xTriangle *tris, *tri;
xPointFixed *first;
int ntri;
if (npoint < 3)
return;
ntri = npoint - 2;
tris = malloc(ntri * sizeof (xTriangle));
if (!tris)
return;
first = points++;
for (tri = tris; npoint >= 3; npoint--, points++, tri++)
{
tri->p1 = *first;
tri->p2 = points[0];
tri->p3 = points[1];
}
(*ps->Triangles) (op, pSrc, pDst, maskFormat, xSrc, ySrc, ntri, tris);
free(tris);
}
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