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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"
/* This routine paints a set of points. All painting goes through the
low-level MI_PAINT_SPANS() macro. */
/* ARGS: mode = Origin or Previous */
void
miDrawPoints_internal (miPaintedSet *paintedSet, const miGC *pGC, miCoordMode mode, int npt, const miPoint *pPts)
{
unsigned int *pwidthInit, *pwidth;
int i;
miPoint *ppt = (miPoint *)NULL;
/* ensure we have >=1 points */
if (npt <= 0)
return;
ppt = (miPoint *)mi_xmalloc (npt * sizeof(miPoint));
if (mode == MI_COORD_MODE_PREVIOUS)
/* convert from relative to absolute coordinates */
{
ppt[0] = pPts[0];
for (i = 1; i < npt; i++)
{
ppt[i].x = ppt[i-1].x + pPts[i].x;
ppt[i].y = ppt[i-1].y + pPts[i].y;
}
}
else
/* just copy */
{
for (i = 0; i < npt; i++)
ppt[i] = pPts[i];
}
pwidthInit = (unsigned int *)mi_xmalloc (npt * sizeof(unsigned int));
pwidth = pwidthInit;
for (i = 0; i < npt; i++)
*pwidth++ = 1;
if (npt > 1)
miQuickSortSpansY (ppt, pwidthInit, npt);
MI_PAINT_SPANS(paintedSet, pGC->pixels[1], npt, ppt, pwidthInit)
}
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