www.pudn.com > uC-GUI-V3-98.zip > 2DGL_DrawPolygon.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        : 2DGL_DrawPolygon.c 
Purpose     : Example for drawing polygons 
---------------------------------------------------------------------- 
*/ 
 
#include "GUI.h" 
 
/******************************************************************* 
* 
*       static variables 
* 
******************************************************************** 
*/ 
 
static const GUI_POINT _aPointArrow[] = { 
  {  0,   0}, 
  {-40, -30}, 
  {-10, -20}, 
  {-10, -70}, 
  { 10, -70}, 
  { 10, -20}, 
  { 40, -30}, 
}; 
 
static const GUI_POINT _aPointStar[] = { 
  {  0, -36}, 
  {  8,  -8}, 
  { 36,   0}, 
  {  8,   8}, 
  {  0,  36}, 
  { -8,   8}, 
  {-36,   0}, 
  { -8,  -8} 
}; 
 
static const GUI_POINT _aPointHexagon[] = { 
  {  0, -30}, 
  { 26, -15}, 
  { 26,  15}, 
  {  0,  30}, 
  {-26,  15}, 
  {-26, -15}, 
}; 
 
/******************************************************************* 
* 
*       static code 
* 
******************************************************************** 
*/ 
 
/******************************************************************* 
* 
*       _DrawPolygon 
 
  Draws polygons of different shapes and colors 
*/ 
static void _DrawPolygon(void) { 
  int y = 90; 
  /* clear display */ 
  GUI_SetBkColor(GUI_BLACK); 
  GUI_Clear(); 
  /* display text */ 
  GUI_SetColor(GUI_WHITE); 
  GUI_SetFont(&GUI_Font24_ASCII); 
  GUI_SetTextAlign(GUI_TA_HCENTER); 
  GUI_DispStringAt("DrawPolygon - Sample", 160, 5); 
  GUI_SetFont(&GUI_Font8x16); 
  GUI_DispStringAt("using", 5, 40); 
  GUI_DispStringAt("GUI_FillPolygon", 5, 55); 
  GUI_SetTextAlign(GUI_TA_HCENTER); 
  GUI_DispStringAt("Polygons of arbitrary shape\nin any color", 160, y + 90); 
  GUI_Delay(500); 
  /* draw filled polygons */ 
  while (1) { 
    GUI_ClearRect(100, y, 220, y + 85); 
    GUI_SetColor(GUI_BLUE); 
    GUI_FillPolygon (&_aPointArrow[0], 7, 160, y + 80); 
    GUI_Delay(1000); 
    GUI_ClearRect(100, y, 220, y + 85); 
    GUI_SetColor(GUI_RED); 
    GUI_FillPolygon (&_aPointStar[0], 8, 160, y + 45); 
    GUI_Delay(1000); 
    GUI_ClearRect(100, y, 220, y + 85); 
    GUI_SetColor(GUI_GREEN); 
    GUI_FillPolygon(&_aPointHexagon[0], 6, 160, y + 45); 
    GUI_Delay(1000); 
  } 
} 
 
/******************************************************************* 
* 
*       MainTask 
* 
*       Example for drawing polygons 
* 
******************************************************************** 
*/ 
 
void MainTask(void) { 
  GUI_Init(); 
  _DrawPolygon(); 
  while (1); 
}