www.pudn.com > UCGUI390a.rar > GUIAAArc.c

/* 
********************************************************************************************************* 
*                                                uC/GUI 
*                        Universal graphic software for embedded applications 
* 
*                       (c) Copyright 2002, Micrium Inc., Weston, FL 
*                       (c) Copyright 2002, SEGGER Microcontroller Systeme GmbH 
* 
*              µC/GUI is protected by international copyright laws. Knowledge of the 
*              source code may not be used to write a similar product. This file may 
*              only be used in accordance with a license and should not be redistributed 
*              in any way. We appreciate your understanding and fairness. 
* 
---------------------------------------------------------------------- 
File        : GUIArcAA.C 
Purpose     : Draw Arc routines with Antialiasing 
---------------------------END-OF-HEADER------------------------------ 
*/ 
 
#include  
#include  
#include  
#include  
 
#include "GUI_Protected.h" 
 
#if GUI_SUPPORT_AA 
 
/********************************************************************* 
* 
*       Static code 
* 
********************************************************************** 
*/ 
/********************************************************************* 
* 
*       _DrawArcAA 
*/ 
static void _DrawArcAA(int x0, int y0, int rx, int ry, int a0, int a1) { 
  int PenSizePrev = GUI_GetPenSize(); 
  int PenSize_AA; 
  int Factor; 
 
  Factor = GUI_Context.AA_HiResEnable ? 1 : GUI_Context.AA_Factor; 
  /* Convert into Hires coordinates (if not already done) */ 
  x0 *= Factor; 
  y0 *= Factor; 
  rx *= Factor; 
  ry *= Factor; 
  PenSize_AA = PenSizePrev * GUI_Context.AA_Factor; 
  GUI_AA_Init_HiRes(x0 - rx - PenSize_AA, x0 + rx + PenSize_AA); 
  GUI_SetPenSize(PenSize_AA); 
  GL_DrawArc(x0, y0, rx, ry,a0,a1); 
  GUI_SetPenSize(PenSizePrev);          /* restore former pen size */ 
  /* Cleanup */ 
  GUI_AA_Exit(); 
} 
 
/********************************************************************* 
* 
*       Public code 
* 
********************************************************************** 
*/ 
/********************************************************************* 
* 
*       GUI_AA_DrawArc 
*/ 
void GUI_AA_DrawArc(int x0, int y0, int rx, int ry, int a0, int a1) { 
  GUI_LOCK(); 
  #if (GUI_WINSUPPORT) 
    WM_ADDORG_AA(x0,y0); 
    WM_ITERATE_START(NULL) { 
  #endif 
  _DrawArcAA( x0, y0, rx, ry, a0, a1); 
  #if (GUI_WINSUPPORT) 
    } WM_ITERATE_END(); 
  #endif 
  GUI_UNLOCK(); 
} 
 
#else                            /* Avoid problems with empty object modules */ 
  void GUIAAArc_C(void); 
  void GUIAAArc_C(void) {} 
#endif /* GUI_SUPPORT_AA */ 
 
/*************************** End of file ****************************/