/***********************************************************************************************************                                                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        : GUIPolyAA.CPurpose     : Draw Polygon routines with Antialiasing---------------------------END-OF-HEADER------------------------------*/#include "GUI_Private.h"#include <stdio.h>#include <string.h>#include <math.h>/*          **********************************************          *                                            *          *              GL_FillPolygonAA              *          *                                            *          ***********************************************/static void _FillPolygonAA      (GUI_POINT* paPoint, int NumPoints, int x, int y) {  int i;  int Stat;  int x0,x1;  int PosFactor = GUI_Context.AA_HiResEnable ? 1 : GUI_Context.AA_Factor;/* Calc horizontal limits and init GUI_AA */  x0 = x1 = paPoint[0].x;  for (i=1; i< NumPoints; i++) {    int x =  paPoint[i].x;    if (x<x0)      x0 = x;    if (x>x1)      x1 = x;  }  if (!GUI_Context.AA_HiResEnable) {    Stat = GUI_AA_Init(x0+x,x1+x);  } else {    Stat = GUI_AA_Init((x0+x)/GUI_Context.AA_Factor,(x1+x)/GUI_Context.AA_Factor);  }  if (Stat ==0) {    /* Modify pointlist */    if (!GUI_Context.AA_HiResEnable) {      for (i=0; i< NumPoints; i++) {        paPoint[i].x *= GUI_Context.AA_Factor;        paPoint[i].y *= GUI_Context.AA_Factor;      }    }    GL_FillPolygon(paPoint, NumPoints, x * PosFactor, y * PosFactor);    /* Restore pointlist */    if (!GUI_Context.AA_HiResEnable) {      for (i=0; i< NumPoints; i++) {        paPoint[i].x /= GUI_Context.AA_Factor;        paPoint[i].y /= GUI_Context.AA_Factor;      }    }    /* Cleanup */  }  GUI_AA_Exit();}void GUI_AA_FillPolygon(/*const*/ GUI_POINT* pPoints, int NumPoints, int x0, int y0) {  GUI_LOCK();  #if (GUI_WINSUPPORT)    WM_ADDORG(x0,y0);    WM_ITERATE_START(NULL); {  #endif/* Variables in MEMDEV module (with memory devices only) */  #if GUI_SUPPORT_MEMDEV    if (GUI_Context.pDeviceAPI->pfFillPolygonAA)      GUI_Context.pDeviceAPI->pfFillPolygonAA(pPoints, NumPoints, x0, y0);    else  #endif  _FillPolygonAA (pPoints, NumPoints, x0, y0);  #if (GUI_WINSUPPORT)    } WM_ITERATE_END();  #endif  GUI_UNLOCK();}