#pragma?once
#include?“stdafx.h“
#include?“CDxfCodeDll.h“
#include?“math.h“

IMPLEMENT_SERIAL（CArc?CEntity?0）
CArc::CArc（）
{
	Init（）;
}
CArc::~CArc（）
{
	
}
void?CArc::Init（）
{
	CEntity::Init（）;
	m_type?=?etArc;
	m_center.Init（）;
	m_begin.Init（）?;
	m_end.Init（）?;
	m_fStartAngle?=?0.0;
	m_fEndAngle?=?0.0;
	m_iDirection?=?CLOCKWISE;
}

CArc::CArc（const?CArc&?arc）
{
	m_center?=?arc.m_center;
	m_begin??=?arc.m_begin?;
	m_end????=?arc.m_end?;
	m_iDirection?=?CLOCKWISE;
}
CArc::CArc（const?Position&?centerdouble?startAngledouble?endAngledouble??Radium）
{
	Init（）;
	m_center?=	center;
	m_fStartAngle?=?startAngle;
	m_fEndAngle?=?endAngle;
	m_dRadius?=?Radium;


	if?（startAngle>endAngle）//////判斷是順時針還是逆時針；
	{
		m_iDirection?=?COUNTERCLOCKWISE;
	}
	else
	{
		m_iDirection?=?CLOCKWISE;
	}

	double?startAnglePIendAnglePI;
	startAnglePI?=?m_fStartAngle*PI/180.0;
	endAnglePI?=?m_fEndAngle*PI/180.0;

	m_begin.x?=?m_dRadius*cos（startAnglePI）+m_center.x;
	m_begin.y?=?m_dRadius*sin（startAnglePI）+m_center.y;

	m_end.x?=?m_dRadius*cos（endAnglePI）+m_center.x;
	m_end.y?=?m_dRadius*sin（endAnglePI）+m_center.y;

	///////求起點的坐標和終點的坐標
	//double?x1y1kStartkEndstartAnglePIendAnglePIDelta;
	//Position?temPosStart1temPosStart2temPosEnd1temPosEnd2temPos;
	//x1?=?m_center.x;
	//y1?=?m_center.y;

	//startAnglePI?=?m_fStartAngle*PI/180.0;
	//endAnglePI?=?m_fEndAngle*PI/180.0;
	//kStart?=?tan（startAnglePI）;
	//kEnd???=?tan（endAnglePI）;

	//////temPosStart1.x>temPosStart2.x?
	//Delta?=?（2*x1+2*kStart*y1）*（2*x1+2*kStart*y1）-4*（1+kStart*kStart）*（x1*x1+y1*y1-m_dRadius*m_dRadius）;
	//temPosStart1.x?=?（2*x1+2*kStart*y1+sqrt（Delta））/（2+2*kStart*kStart）;
	//temPosStart1.y?=?temPosStart1.x*kStart;

	//temPosStart2.x?=?（2*x1+2*kStart*y1-sqrt（Delta））/（2+2*kStart*kStart）;
	//temPosStart2.y?=?temPosStart1.x*kStart;

	///////temPosEnd1.x>temPosEnd2.x
	//Delta?=?（2*x1+2*kEnd*y1）*（2*x1+2*kEnd*y1）-4*（1+kEnd*kEnd）*（x1*x1+y1*y1-m_dRadius*m_dRadius）;
	//temPosEnd1.x?=?（2*x1+2*kEnd*y1+sqrt（Delta））/（2+2*kEnd*kEnd）;
	//temPosEnd1.y?=?temPosEnd1.x*kEnd;

	//temPosEnd2.x?=?（2*x1+2*kEnd*y1-sqrt（Delta））/（2+2*kEnd*kEnd）;
	//temPosEnd2.y?=?temPosEnd2.x*kEnd;
}

CArc::CArc（const?Position&?centerconst?Position&?pos1?const?Position&?pos2）
{
	Init（）;
	m_center?=?center?;
	m_begin?=?pos1?;
	double??radius?=?m_center.Distance（m_begin）?;

	double	angle1?=?GetAngleToXAxis（center?pos1）;	
	double??angle2?=?GetAngleToXAxis（center?pos2）;

	m_begin?=?pos1;
	m_end.x?=?radius?*?cos（angle2）?+?m_center.x?;
	m_end.y?=?radius?*?sin（angle2）?+?m_center.y?;

}

Position?CArc::GetEndPos（）
{
	return?m_end;
}

Position?CArc::GetBeginPos（）
{
	return?m_begin;
}

Position?CArc::GetCenterPos（）
{
	return?m_center?;
}

void?CArc::SetBeginPos（Position?p）
{
	m_begin.x=p.x;
	m_begin.y=p.y;
}

void??CArc::SetEndPos（Position?p）
{
	m_end.x=p.x;
	m_end.y=p.y;
}

void?CArc::SetCenterPos（Position?p）
{
	

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----
?????目錄???????????0??2016-10-12?10:27??CDxfCode_MFC\
?????目錄???????????0??2016-10-12?10:26??CDxfCode_MFC\CDxfCode\
?????目錄???????????0??2016-10-12?10:26??CDxfCode_MFC\CDxfCode\CDxfCode\
?????文件????????1345??2016-08-18?09:56??CDxfCode_MFC\CDxfCode\CDxfCode.sln
?????文件???????34304??2016-10-08?17:38??CDxfCode_MFC\CDxfCode\CDxfCode.suo
?????文件????????4833??2016-10-10?12:42??CDxfCode_MFC\CDxfCode\CDxfCode\CArc.cpp
?????文件????????1882??2016-10-10?13:57??CDxfCode_MFC\CDxfCode\CDxfCode\CCircle.cpp
?????文件???????19396??2016-10-09?15:42??CDxfCode_MFC\CDxfCode\CDxfCode\CDxfCode.aps
?????文件????????1129??2016-08-18?09:22??CDxfCode_MFC\CDxfCode\CDxfCode\CDxfCode.cpp
?????文件??????????88??2016-08-18?09:22??CDxfCode_MFC\CDxfCode\CDxfCode\CDxfCode.def
?????文件?????????407??2016-08-18?09:22??CDxfCode_MFC\CDxfCode\CDxfCode\CDxfCode.h
?????文件????????6182??2016-08-18?09:22??CDxfCode_MFC\CDxfCode\CDxfCode\CDxfCode.rc
?????文件????????6105??2016-08-18?15:55??CDxfCode_MFC\CDxfCode\CDxfCode\CDxfCode.vcxproj
?????文件????????2622??2016-08-18?15:01??CDxfCode_MFC\CDxfCode\CDxfCode\CDxfCode.vcxproj.filters
?????文件?????????143??2016-08-18?09:22??CDxfCode_MFC\CDxfCode\CDxfCode\CDxfCode.vcxproj.user
?????文件????????2471??2016-08-18?17:18??CDxfCode_MFC\CDxfCode\CDxfCode\CDxfCodeDll.cpp
?????文件????????7439??2016-10-10?12:16??CDxfCode_MFC\CDxfCode\CDxfCode\CDxfCodeDll.h
?????文件?????????916??2016-08-18?17:52??CDxfCode_MFC\CDxfCode\CDxfCode\CEntity.cpp
?????文件????????1765??2016-09-28?16:46??CDxfCode_MFC\CDxfCode\CDxfCode\CLine.cpp
?????文件??????????40??2016-08-18?14:35??CDxfCode_MFC\CDxfCode\CDxfCode\CPosition.cpp
?????文件????????2155??2016-09-28?16:46??CDxfCode_MFC\CDxfCode\CDxfCode\CRectangle.cpp
?????目錄???????????0??2016-10-12?10:28??CDxfCode_MFC\CDxfCode\CDxfCode\Debug\
?????文件????????2488??2016-08-18?09:22??CDxfCode_MFC\CDxfCode\CDxfCode\ReadMe.txt
?????目錄???????????0??2016-10-12?10:26??CDxfCode_MFC\CDxfCode\CDxfCode\res\
?????文件?????????364??2016-08-18?09:22??CDxfCode_MFC\CDxfCode\CDxfCode\Resource.h
?????文件?????????672??2016-08-18?09:22??CDxfCode_MFC\CDxfCode\CDxfCode\res\CDxfCode.rc2
?????文件?????????139??2016-08-18?09:22??CDxfCode_MFC\CDxfCode\CDxfCode\stdafx.cpp
?????文件????????1131??2016-08-18?09:22??CDxfCode_MFC\CDxfCode\CDxfCode\stdafx.h
?????文件?????????236??2016-08-18?09:22??CDxfCode_MFC\CDxfCode\CDxfCode\targetver.h
?????目錄???????????0??2016-10-12?10:26??CDxfCode_MFC\CDxfCode\ipch\
?????目錄???????????0??2016-10-08?11:02??CDxfCode_MFC\CDxfCode\ipch\draw-a3396146\
............此處省略47個文件信息