1 /**
2 ** upcirc.c
3 **
4 ** Copyright (C) 1997, Michael Goffioul
5 ** [goffioul@emic.ucl.ac.be]
6 **
7 ** This file is part of the GRX graphics library.
8 **
9 ** The GRX graphics library is free software; you can redistribute it
10 ** and/or modify it under some conditions; see the "copying.grx" file
11 ** for details.
12 **
13 ** This library is distributed in the hope that it will be useful,
14 ** but WITHOUT ANY WARRANTY; without even the implied warranty of
15 ** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
16 **
17 ** Note : compiling the library with -DUSR_KEEP_SHAPE makes a circle
18 ** looks like a circle on the screen
19 **
20 **/
21
22 #include "libgrx.h"
23 #include "usercord.h"
24
GrUsrPatternedCircle(int xc,int yc,int r,GrLinePattern * lp)25 void GrUsrPatternedCircle(int xc,int yc,int r,GrLinePattern *lp)
26 {
27 #ifdef USR_KEEP_SHAPE
28 U2SX(xc,CURC);
29 U2SY(yc,CURC);
30 SCALE(r,r,CURC->gc_xmax,CURC->gc_usrwidth);
31 GrPatternedCircle(xc,yc,r,lp);
32 #else
33 GrUsrPatternedEllipse(xc,yc,r,r,lp);
34 #endif /* USR_KEEP_SHAPE */
35 }
36