48 lines
1.6 KiB
C
48 lines
1.6 KiB
C
/*
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*********************************************************************************************************
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* uC/GUI
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* Universal graphic software for embedded applications
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*
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* (c) Copyright 2002, Micrium Inc., Weston, FL
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* (c) Copyright 2002, SEGGER Microcontroller Systeme GmbH
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*
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* µC/GUI is protected by international copyright laws. Knowledge of the
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* source code may not be used to write a similar product. This file may
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* only be used in accordance with a license and should not be redistributed
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* in any way. We appreciate your understanding and fairness.
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*
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----------------------------------------------------------------------
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File : GUIPolyR.c
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Purpose : Polygon rotation
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----------------------------------------------------------------------
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*/
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#include "arm_math.h"
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#include "GUI.h"
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/*********************************************************************
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*
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* Public code
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*
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**********************************************************************
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*/
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/*********************************************************************
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*
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* GUI_RotatePolygon
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*/
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void GUI_RotatePolygon(GUI_POINT *pDest, const GUI_POINT *pSrc, int NumPoints, float Angle)
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{
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int j;
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float fcos = arm_cos_f32(Angle);
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float fsin = arm_sin_f32(Angle);
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for (j = 0; j < NumPoints; j++)
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{
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int x = (pSrc + j)->x;
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int y = (pSrc + j)->y;
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(pDest + j)->x = x * fcos + y * fsin;
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(pDest + j)->y = -x * fsin + y * fcos;
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}
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}
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/*************************** End of file ****************************/
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