AA_HiResAntialiasing.c

00001 /*********************************************************************
00002 *                SEGGER Microcontroller GmbH                         *
00003 *        Solutions for real time microcontroller applications        *
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00009 *                                                                    *
00010 **********************************************************************
00011 
00012 ** emWin V5.48 - Graphical user interface for embedded applications **
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00015 source code may not be used to write a similar product.  This file may
00016 only be used in accordance with the following terms:
00017 
00018 The software  has been licensed to  Cypress Semiconductor Corporation,
00019 whose registered  office is situated  at 198 Champion Ct. San Jose, CA 
00020 95134 USA  solely for the  purposes of creating  libraries for Cypress
00021 PSoC3 and  PSoC5 processor-based devices,  sublicensed and distributed
00022 under  the  terms  and  conditions  of  the  Cypress  End User License
00023 Agreement.
00024 Full source code is available at: www.segger.com
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00027 ----------------------------------------------------------------------
00028 Licensing information
00029 Licensor:                 SEGGER Microcontroller Systems LLC
00030 Licensed to:              Cypress Semiconductor Corp, 198 Champion Ct., San Jose, CA 95134, USA
00031 Licensed SEGGER software: emWin
00032 License number:           GUI-00319
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00035 ----------------------------------------------------------------------
00036 Support and Update Agreement (SUA)
00037 SUA period:               2009-06-12 - 2022-07-27
00038 Contact to extend SUA:    sales@segger.com
00039 ----------------------------------------------------------------------
00040 File        : AA_HiResAntialiasing.c
00041 Purpose     : Demonstrates high resolution antialiasing
00042 Requirements: WindowManager - ( )
00043               MemoryDevices - (x)
00044               AntiAliasing  - (x)
00045               VNC-Server    - ( )
00046               PNG-Library   - ( )
00047               TrueTypeFonts - ( )
00048 ----------------------------------------------------------------------
00049 */
00050 
00051 #include "GUI.h"
00052 
00053 /*******************************************************************
00054 *
00055 *       Defines
00056 *
00057 ********************************************************************
00058 */
00059 #define countof(Obj) (sizeof(Obj)/sizeof(Obj[0]))
00060 
00061 //
00062 // Recommended memory to run the sample with adequate performance
00063 //
00064 #define RECOMMENDED_MEMORY (1024L * 20)
00065 
00066 /*******************************************************************
00067 *
00068 *       static variables
00069 *
00070 ********************************************************************
00071 */
00072 
00073 static const GUI_POINT _aPointer[] = {
00074   { 0,  3},
00075   {85,  1},
00076   {90,  0},
00077   {85, -1},
00078   { 0, -3}
00079 };
00080 
00081 static GUI_POINT _aPointerHiRes[countof(_aPointer)];
00082 
00083 typedef struct {
00084   GUI_AUTODEV_INFO AutoInfo;
00085   GUI_POINT aPoints[countof(_aPointer)];
00086   int Factor;
00087 } PARAM;
00088 
00089 /*******************************************************************
00090 *
00091 *       Static functions
00092 *
00093 ********************************************************************
00094 */
00095 /*******************************************************************
00096 *
00097 *       _DrawHiRes
00098 *
00099 * Function description
00100 *   This function draws the high resolution pointer
00101 */
00102 static void _DrawHiRes(void * p) {
00103   PARAM * pParam = (PARAM *)p;
00104   if (pParam->AutoInfo.DrawFixed) {
00105     GUI_ClearRect(60, 60, 159, 159);
00106   }
00107   GUI_AA_FillPolygon(pParam->aPoints, 
00108                      countof(_aPointer), 
00109                      65  * pParam->Factor, 
00110                      155 * pParam->Factor);
00111 }
00112 
00113 /*******************************************************************
00114 *
00115 *       _Draw
00116 *
00117 * Function description
00118 *   This function draws the non high resolution pointer
00119 */
00120 static void _Draw(void * p) {
00121   PARAM * pParam = (PARAM *)p;
00122   if (pParam->AutoInfo.DrawFixed) {
00123     GUI_ClearRect(160, 60, 259, 159);
00124   }
00125   GUI_AA_FillPolygon(pParam->aPoints, countof(_aPointer), 165, 155);
00126 }
00127 
00128 /*******************************************************************
00129 *
00130 *       _ShowHiresAntialiasing
00131 *
00132 * Function description
00133 *   This function creates the memory auto devices and handle the
00134 *   rotation of the pointers
00135 */
00136 static void _ShowHiresAntialiasing(void) {
00137   GUI_AUTODEV aAuto[2];
00138   PARAM       Param;
00139   unsigned         i;
00140 
00141   Param.Factor = 3;
00142   GUI_SetBkColor(GUI_BLACK);
00143   GUI_Clear();
00144   GUI_SetColor(GUI_WHITE);
00145   GUI_SetTextAlign(GUI_TA_HCENTER);
00146   GUI_SetFont(&GUI_Font24_ASCII);
00147   GUI_DispStringAt("AA_HiResAntialiasing - Sample", 160, 5);
00148   GUI_SetFont(&GUI_Font6x8);
00149   GUI_DispStringHCenterAt("Using\nhigh\nresolution\nmode", 110, 180);
00150   GUI_DispStringHCenterAt("Not using\nhigh\nresolution\nmode", 210, 180);
00151   //
00152   // Create GUI_AUTODEV objects
00153   //
00154   for (i = 0; i < countof(aAuto); i++) {
00155     GUI_MEMDEV_CreateAuto(&aAuto[i]);
00156   }
00157   //
00158   // Calculate pointer for high resolution
00159   //
00160   for (i = 0; i < countof(_aPointer); i++) {
00161     _aPointerHiRes[i].x = _aPointer[i].x * Param.Factor;
00162     _aPointerHiRes[i].y = _aPointer[i].y * Param.Factor;
00163   }
00164   GUI_AA_SetFactor(Param.Factor); /* Set antialiasing factor */
00165   while (1) {
00166     for (i = 0; i < 1800; i++) {
00167       float Angle = (i >= 900) ? 1800 - i : i;
00168       Angle *= 3.1415926f / 1800;
00169       //
00170       // Draw pointer with high resolution
00171       //
00172       GUI_AA_EnableHiRes();
00173       GUI_RotatePolygon(Param.aPoints, _aPointerHiRes, countof(_aPointer), Angle);
00174       GUI_MEMDEV_DrawAuto(&aAuto[0], &Param.AutoInfo, _DrawHiRes, &Param);
00175       //
00176       // Draw pointer without high resolution
00177       //
00178       GUI_AA_DisableHiRes();
00179       GUI_RotatePolygon(Param.aPoints, _aPointer, countof(_aPointer), Angle);
00180       GUI_MEMDEV_DrawAuto(&aAuto[1], &Param.AutoInfo, _Draw, &Param);
00181       GUI_Delay(2);
00182     }
00183   }
00184 }
00185 
00186 /*********************************************************************
00187 *
00188 *       Public code
00189 *
00190 **********************************************************************
00191 */
00192 /*********************************************************************
00193 *
00194 *       MainTask
00195 */
00196 void MainTask(void) {
00197   GUI_Init();
00198   //
00199   // Check if recommended memory for the sample is available
00200   //
00201   if (GUI_ALLOC_GetNumFreeBytes() < RECOMMENDED_MEMORY) {
00202     GUI_ErrorOut("Not enough memory available."); 
00203     return;
00204   }
00205   _ShowHiresAntialiasing();
00206 }
00207 
00208 /*************************** End of file ****************************/
00209