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/* This file is part of the GNU libxmi package.
Copyright (C) 1985, 1986, 1987, 1988, 1989, X Consortium. For an
associated permission notice, see the accompanying file README-X.
GNU enhancements Copyright (C) 1998, 1999, 2000, 2005, Free Software
Foundation, Inc.
The GNU libxmi package is free software. You may redistribute it
and/or modify it under the terms of the GNU General Public License as
published by the Free Software foundation; either version 2, or (at your
option) any later version.
The GNU libxmi package is distributed in the hope that it will be
useful, but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
General Public License for more details.
You should have received a copy of the GNU General Public License along
with the GNU plotutils package; see the file COPYING. If not, write to
the Free Software Foundation, Inc., 51 Franklin St., Fifth Floor,
Boston, MA 02110-1301, USA. */
#include "sys-defines.h"
#include "extern.h"
#include "xmi.h"
#include "mi_spans.h"
#include "mi_gc.h"
#include "mi_api.h"
/*
* Written by Brian Kelleher; June 1986
*
* Draw a polygon (supplied as a polyline, i.e. an array of points), via
* one of two scan conversion routines.
*/
void
miFillPolygon_internal (miPaintedSet *paintedSet, const miGC *pGC, miPolygonShape shape, miCoordMode mode, int count, const miPoint *pPts)
{
miPoint *ppt = (miPoint *)NULL;
const miPoint *q;
/* ensure we have >=1 points */
if (count <= 0)
return;
if (mode == MI_COORD_MODE_PREVIOUS)
/* convert from relative to absolute coordinates */
{
int i;
ppt = (miPoint *)mi_xmalloc (count * sizeof(miPoint));
ppt[0] = pPts[0];
for (i = 1; i < count; i++)
{
ppt[i].x = ppt[i-1].x + pPts[i].x;
ppt[i].y = ppt[i-1].y + pPts[i].y;
}
q = ppt;
}
else
q = pPts;
switch ((int)shape)
{
case (int)MI_SHAPE_GENERAL:
default:
/* use general scan conversion routine */
miFillGeneralPoly (paintedSet, pGC, count, q);
break;
case (int)MI_SHAPE_CONVEX:
/* use special (faster) routine */
miFillConvexPoly (paintedSet, pGC, count, q);
break;
}
if (mode == MI_COORD_MODE_PREVIOUS)
free (ppt);
}
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