www.pudn.com > uC-GUI-V3-98.zip > AA_HiResPixels.c

/* 
********************************************************************************************************* 
*                                             uC/GUI V3.98 
*                        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        : AA_HiResPixels.c 
Purpose     : Demonstrates high resolution pixels 
---------------------------------------------------------------------- 
*/ 
 
#include "GUI.h" 
#include "WM.h" 
 
/******************************************************************* 
* 
*       defines 
* 
******************************************************************** 
*/ 
 
#define countof(Array) (sizeof(Array) / sizeof(Array[0])) 
 
#define AA_FACTOR    4 
#define POLY_SIZE   19 
#define POLY_POINTS  3 
 
/******************************************************************* 
* 
*       static variables 
* 
******************************************************************** 
*/ 
 
static int _pos_x1   = 30; 
static int _pos_y1   = 30; 
static int _pos_x2   = 125; 
static int _pos_y2   = 30; 
static int _pos_x3   = 220 * AA_FACTOR; 
static int _pos_y3   = 30  * AA_FACTOR; 
static int _color_d  = -1; 
static GUI_COLOR _color_a  = 0xFF00FE; 
static GUI_COLOR _color_b  = 0x00FEFF; 
static GUI_COLOR _color_c  = 0xFEFFFE; 
 
static const GUI_POINT _aPolygon_src[] = { 
  {          0         , -POLY_SIZE * 1.4142 }, 
  {  POLY_SIZE * 1.2247,  POLY_SIZE * 0.7071 }, 
  { -POLY_SIZE * 1.2247,  POLY_SIZE * 0.7071 }, 
}; 
 
static const GUI_POINT _aPolygonHiRes_src[] = { 
  {          0 * AA_FACTOR,          -POLY_SIZE * AA_FACTOR * 1.4142 }, 
  {  POLY_SIZE * AA_FACTOR * 1.2247,  POLY_SIZE * AA_FACTOR * 0.7071 }, 
  { -POLY_SIZE * AA_FACTOR * 1.2247,  POLY_SIZE * AA_FACTOR * 0.7071 }, 
}; 
 
static GUI_POINT _aPolygon[POLY_POINTS]; 
static GUI_POINT _aPolygonHiRes[POLY_POINTS]; 
 
/******************************************************************* 
* 
*       static functions 
* 
******************************************************************** 
*/ 
 
/******************************************************************* 
* 
*       _cbWindow 
 
  This is the callback for the window. A callback was used 
  for memory devices. 
*/ 
static void _cbWindow(WM_MESSAGE* pMsg) { 
  switch (pMsg->MsgId) { 
  case WM_PAINT: 
    GUI_SetBkColor(_color_a); 
    GUI_ClearRect( 0, 0, 250, 14); 
    GUI_SetBkColor(_color_b); 
    GUI_ClearRect( 0, 15, 250, 29); 
    GUI_SetBkColor(GUI_BLACK); 
    GUI_ClearRect( 0, 30, 250, 60); 
    GUI_SetColor(_color_c); 
    GUI_FillPolygon(_aPolygon, POLY_POINTS, _pos_x1, _pos_y1); 
    GUI_AA_FillPolygon(_aPolygon, POLY_POINTS, _pos_x2, _pos_y2); 
    GUI_AA_EnableHiRes(); 
    GUI_AA_FillPolygon(_aPolygonHiRes, POLY_POINTS, _pos_x3, _pos_y3); 
    GUI_AA_DisableHiRes(); 
    break; 
  default: 
    WM_DefaultProc(pMsg); 
  } 
} 
 
/******************************************************************* 
* 
*       _CalcColor 
 
  Calculates the color-fading. 
*/ 
static void _CalcColor(void) { 
  _color_a += 0x000002 * _color_d; 
  _color_b += 0x000200 * _color_d; 
  _color_c += 0x020002 * _color_d; 
  if (_color_c == 0xFEFFFE || _color_c == 0x00FF00) { 
    _color_d = -_color_d; 
  } 
} 
 
/******************************************************************* 
* 
*       _ShowHiResPixels 
 
  This is frame-function for the callback. It creates the window 
  and handles the rotation of polygons and colors. 
*/ 
static void _ShowHiResPixels(void) { 
  WM_HWIN hWindow; 
  const GUI_FONT *font_old; 
  float pi, step, angle; 
  int i, tm; 
  pi = 3.1415926f; 
  step = pi / 180; 
  GUI_SetBkColor(GUI_BLACK); 
  GUI_Clear(); 
  GUI_SetColor(GUI_WHITE); 
  GUI_SetTextAlign(GUI_TA_HCENTER); 
  font_old = GUI_SetFont(&GUI_Font24_ASCII); 
  GUI_DispStringAt("AA_HiResPixels - Sample", 160, 5); 
  GUI_SetFont(font_old); 
  GUI_SetColor(GUI_RED); 
  GUI_DispStringHCenterAt("not\nantialised", 65, 100); 
  GUI_SetColor(GUI_GREEN); 
  GUI_DispStringHCenterAt("antialised", 160, 100); 
  GUI_SetColor(GUI_BLUE); 
  GUI_DispStringHCenterAt("antialised\nwith high\nresolution", 255, 100); 
  hWindow = WM_CreateWindow(35, 140, 250, 60, WM_CF_SHOW | WM_CF_MEMDEV, &_cbWindow, 0); 
  WM_SelectWindow(hWindow); 
  GUI_AA_SetFactor(AA_FACTOR); 
  while (1) { 
    for (i=0, angle=0; i<360; i++) { 
      tm = GUI_GetTime(); 
      angle += step; 
      GUI_RotatePolygon(_aPolygonHiRes, _aPolygonHiRes_src, POLY_POINTS, angle); 
      GUI_RotatePolygon(_aPolygon, _aPolygon_src, POLY_POINTS, angle); 
      _CalcColor(); 
      WM_InvalidateWindow(hWindow); 
      while (((GUI_GetTime()-tm) < 50) || (WM_Exec1() != 0)); 
    } 
  } 
  WM_DeleteWindow(hWindow); 
} 
 
/******************************************************************* 
* 
*       MainTask 
* 
*       Demonstrates the effect of high resolution coordinates 
* 
******************************************************************** 
*/ 
 
void MainTask(void) { 
  GUI_Init(); 
  _ShowHiResPixels(); 
}