guiaaarc.c

TFT LCD（240*320

/*
*********************************************************************************************************
*                                                uC/GUI
*                        Universal graphic software for embedded applications
*
*                       (c) Copyright 2002, Micrium Inc., Weston, FL
*                       (c) Copyright 2002, SEGGER Microcontroller Systeme GmbH
*
*              礐/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 <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <math.h>

#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 ****************************/