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ucircle.c
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1993-12-06
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/**
** UCIRCLE.C
**
** Copyright (C) 1992, Csaba Biegl
** 820 Stirrup Dr, Nashville, TN, 37221
** csaba@vuse.vanderbilt.edu
**
** This file is distributed under the terms listed in the document
** "copying.cb", available from the author at the address above.
** A copy of "copying.cb" should accompany this file; if not, a copy
** should be available from where this file was obtained. This file
** may not be distributed without a verbatim copy of "copying.cb".
** You should also have received a copy of the GNU General Public
** License along with this program (it is in the file "copying");
** if not, write to the Free Software Foundation, Inc., 675 Mass Ave,
** Cambridge, MA 02139, USA.
**
** This program 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.
**/
#include "grx.h"
#include "libgrx.h"
#include "usercord.h"
static void udrawellip(int xc,int yc,int xa,int ya,int c,int filled)
{
U2SX(xc,CURC);
U2SY(yc,CURC);
SCALE(xa,xa,CURC->gc_xmax,CURC->gc_usrwidth);
SCALE(ya,ya,CURC->gc_ymax,CURC->gc_usrheight);
(*(filled ? GrFilledEllipse : GrEllipse))(xc,yc,xa,ya,c);
}
void GrUsrCircle(int xc,int yc,int r,int c)
{
udrawellip(xc,yc,r,r,c,FALSE);
}
void GrUsrFilledCircle(int xc,int yc,int r,int c)
{
udrawellip(xc,yc,r,r,c,TRUE);
}
void GrUsrEllipse(int xc,int yc,int xa,int ya,int c)
{
udrawellip(xc,yc,xa,ya,c,FALSE);
}
void GrUsrFilledEllipse(int xc,int yc,int xa,int ya,int c)
{
udrawellip(xc,yc,xa,ya,c,TRUE);
}