//// "$Id: fl_arci.cxx,v 1.1.1.1 2003/08/07 21:18:40 jasonk Exp $"//// Arc (integer) drawing functions for the Fast Light Tool Kit (FLTK).//// Copyright 1998-1999 by Bill Spitzak and others.//// This library is free software; you can redistribute it and/or// modify it under the terms of the GNU Library General Public// License as published by the Free Software Foundation; either// version 2 of the License, or (at your option) any later version.//// This library 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// Library General Public License for more details.//// You should have received a copy of the GNU Library General Public// License along with this library; if not, write to the Free Software// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307// USA.//// Please report all bugs and problems to "fltk-bugs@easysw.com".//// "integer" circle drawing functions.  These draw the limited// circle types provided by X and NT graphics.  The advantage of// these is that small ones draw quite nicely (probably due to stored// hand-drawn bitmaps of small circles!) and may be implemented by// hardware and thus are fast.// Probably should add fl_chord.// 3/10/98: created#include <FL/fl_draw.H>#include <FL/x.H>//#include <stdio.H> //tanghao#ifdef WIN32#include <FL/math.h>#endifvoid fl_arc(int x,int y,int w,int h,double a1,double a2) {  if (w <= 0 || h <= 0) return;#ifdef WIN32  int xa = x+w/2+int(w*cos(a1/180.0*M_PI));  int ya = y+h/2-int(h*sin(a1/180.0*M_PI));  int xb = x+w/2+int(w*cos(a2/180.0*M_PI));  int yb = y+h/2-int(h*sin(a2/180.0*M_PI));  Arc(fl_gc, x, y, x+w, y+h, xa, ya, xb, yb); #else#ifdef NANO_X   --w;  --h;  GrArcAngle(fl_window, fl_gc, x + w/2, y + h/2, w/2, h/2, 	     int(a1 * 64), int(a2 * 64), MWARC);  ++w;  ++h;#ifdef oldold //tanghao  GrEllipse(fl_window,fl_gc,x+(w-1)/2,y+(h-1)/2,(w-1)/2,(h-1)/2);  //llx+w/2,lly+h/2,w/2,h/2);  //printf("not support ARC now,in Nano_X\n");#endif#else  XDrawArc(fl_display, fl_window, fl_gc, x,y,w-1,h-1, int(a1*64),int((a2-a1)*64));#endif //tanghao#endif}void fl_pie(int x,int y,int w,int h,double a1,double a2) {  if (w <= 0 || h <= 0) return;  if (a1 == a2) return;#ifdef WIN32  int xa = x+w/2+int(w*cos(a1/180.0*M_PI));  int ya = y+h/2-int(h*sin(a1/180.0*M_PI));  int xb = x+w/2+int(w*cos(a2/180.0*M_PI));  int yb = y+h/2-int(h*sin(a2/180.0*M_PI));  SelectObject(fl_gc, fl_brush());  Pie(fl_gc, x, y, x+w, y+h, xa, ya, xb, yb); #else#ifdef NANO_X    --w;  --h;  GrArcAngle(fl_window, fl_gc, x + w/2, y + h/2, w/2, h/2, 	     int(a1 * 64), int(a2 * 64), MWPIE);    ++w;  ++h;#ifdef oldold //tanghao  GrFillEllipse(fl_window,fl_gc,x+w/2,y+h/2,w/2,h/2);  //  printf("not support fillARC now,in Nano_X\n");#endif#else  XFillArc(fl_display, fl_window, fl_gc, x,y,w,h, int(a1*64),int((a2-a1)*64));#endif //tanghao#endif}//// End of "$Id: fl_arci.cxx,v 1.1.1.1 2003/08/07 21:18:40 jasonk Exp $".//