1 /**
2 ** pfellia.c
3 **
4 ** Copyright (c) 1995 Csaba Biegl, 820 Stirrup Dr, Nashville, TN 37221
5 ** [e-mail: csaba@vuse.vanderbilt.edu]
6 **
7 ** Copyright (C) 1992, Csaba Biegl
8 ** 820 Stirrup Dr, Nashville, TN, 37221
9 ** csaba@vuse.vanderbilt.edu
10 **
11 ** This file is part of the GRX graphics library.
12 **
13 ** The GRX graphics library is free software; you can redistribute it
14 ** and/or modify it under some conditions; see the "copying.grx" file
15 ** for details.
16 **
17 ** This library is distributed in the hope that it will be useful,
18 ** but WITHOUT ANY WARRANTY; without even the implied warranty of
19 ** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
20 **
21 **/
22
23 #include "libgrx.h"
24 #include "allocate.h"
25 #include "shapes.h"
26
GrPatternFilledEllipseArc(int xc,int yc,int xa,int ya,int start,int end,int style,GrPattern * p)27 void GrPatternFilledEllipseArc(int xc,int yc,int xa,int ya,int start,int end,int style,GrPattern *p)
28 {
29 int (*points)[2];
30 setup_ALLOC();
31 points = ALLOC(sizeof(int) * 2 * (GR_MAX_ELLIPSE_POINTS + 1));
32 if (points != NULL)
33 {
34 int numpts = GrGenerateEllipseArc(xc,yc,xa,ya,start,end,points);
35 GrFillArg fa;
36
37 if (style == GR_ARC_STYLE_CLOSE2) {
38 points[numpts][0] = xc;
39 points[numpts][1] = yc;
40 numpts++;
41 }
42 fa.p = p;
43 if(numpts < 0) _GrScanConvexPoly((-numpts),points,&_GrPatternFiller,fa);
44 else _GrScanPolygon( numpts, points,&_GrPatternFiller,fa);
45 FREE(points);
46 }
47 reset_ALLOC();
48 }
49