/***********************************************************************************************************                                                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        : GUIPolyR.cPurpose     : Polygon rotation----------------------------------------------------------------------*/#include <math.h>#include "GUI.H"/*********************************************************************                  GUI_RotatePolygon**********************************************************************/void GUI_RotatePolygon(GUI_POINT* pDest, const GUI_POINT* pSrc, int NumPoints, float Angle) {  int j;  float fcos = cos(Angle);  float fsin = sin(Angle);  for (j=0; j<NumPoints; j++) {    int x = (pSrc+j)->x;    int y = (pSrc+j)->y;    (pDest+j)->x =  x * fcos + y * fsin;    (pDest+j)->y = -x * fsin + y * fcos;  }}