二维多边形布尔运算，包括多边形绘制，交并差

代码暂支持多边形的交并差，若要支持圆弧，可将圆弧离散成线段

// MainFrm.cpp : CMainframe 类的实现
//

#include “stdafx.h“
#include “TextPolygonInter.h“

#include “MainFrm.h“

#ifdef _DEBUG
#define new DEBUG_NEW
#endif

// CMainframe

IMPLEMENT_DYNCREATE（CMainframe CframeWnd）

BEGIN_MESSAGE_MAP（CMainframe CframeWnd）
	ON_WM_CREATE（）
END_MESSAGE_MAP（）

static UINT indicators[] =
{
	ID_SEPARATOR           // 状态行指示器
	ID_INDICATOR_CAPS
	ID_INDICATOR_NUM
	ID_INDICATOR_SCRL
};

// CMainframe 构造/析构

CMainframe::CMainframe（）
{
	// TODO:  在此添加成员初始化代码
}

CMainframe::~CMainframe（）
{
}

int CMainframe::OnCreate（LPCREATESTRUCT lpCreateStruct）
{
	if （CframeWnd::OnCreate（lpCreateStruct） == -1）
		return -1;

	if （!m_wndToolBar.CreateEx（this TBstyle_FLAT WS_CHILD | WS_VISIBLE | CBRS_TOP | CBRS_GRIPPER | CBRS_TOOLTIPS | CBRS_FLYBY | CBRS_SIZE_DYNAMIC） ||
		!m_wndToolBar.LoadToolBar（IDR_MAINframe））
	{
		TRACE0（“未能创建工具栏\n“）;
		return -1;      // 未能创建
	}

	if （!m_wndStatusBar.Create（this））
	{
		TRACE0（“未能创建状态栏\n“）;
		return -1;      // 未能创建
	}
	m_wndStatusBar.SetIndicators（indicators sizeof（indicators）/sizeof（UINT））;

	// TODO:  如果不需要可停靠工具栏，则删除这三行
	m_wndToolBar.EnableDocking（CBRS_ALIGN_ANY）;
	EnableDocking（CBRS_ALIGN_ANY）;
	DockControlBar（&m_wndToolBar）;


	return 0;
}

BOOL CMainframe::PreCreateWindow（CREATESTRUCT& cs）
{
	if（ !CframeWnd::PreCreateWindow（cs） ）
		return FALSE;
	// TODO:  在此处通过修改
	//  CREATESTRUCT cs 来修改窗口类或样式

	return TRUE;
}

// CMainframe 诊断

#ifdef _DEBUG
void CMainframe::AssertValid（） const
{
	CframeWnd::AssertValid（）;
}

void CMainframe::Dump（CDumpContext& dc） const
{
	CframeWnd::Dump（dc）;
}
#endif //_DEBUG


// CMainframe 消息处理程序

 属性            大小     日期    时间   名称
----------- ---------  ---------- -----  ----
     目录           0  2018-08-25 16:41  TextPolygonInter\
     目录           0  2018-08-21 10:47  TextPolygonInter\.vs\
     目录           0  2018-08-21 10:47  TextPolygonInter\.vs\TextPolygonInter\
     目录           0  2018-08-21 10:47  TextPolygonInter\.vs\TextPolygonInter\v14\
     文件       31232  2018-08-25 16:40  TextPolygonInter\.vs\TextPolygonInter\v14\.suo
     目录           0  2018-08-25 16:41  TextPolygonInter\TextPolygonInter\
     文件        1786  2018-08-21 10:45  TextPolygonInter\TextPolygonInter\MainFrm.cpp
     文件         669  2018-08-21 10:45  TextPolygonInter\TextPolygonInter\MainFrm.h
     文件        4970  2018-08-21 10:45  TextPolygonInter\TextPolygonInter\ReadMe.txt
     文件      119444  2018-08-21 10:45  TextPolygonInter\TextPolygonInter\TextPolygonInter.aps
     文件        4354  2018-08-21 10:45  TextPolygonInter\TextPolygonInter\TextPolygonInter.cpp
     文件         570  2018-08-21 10:45  TextPolygonInter\TextPolygonInter\TextPolygonInter.h
     文件       11968  2018-08-21 10:45  TextPolygonInter\TextPolygonInter\TextPolygonInter.rc
     文件        6500  2018-08-21 10:46  TextPolygonInter\TextPolygonInter\TextPolygonInter.vcxproj
     文件        2696  2018-08-21 10:45  TextPolygonInter\TextPolygonInter\TextPolygonInter.vcxproj.filters
     文件        2735  2018-08-21 10:45  TextPolygonInter\TextPolygonInter\TextPolygonInterDoc.cpp
     文件         907  2018-08-21 10:45  TextPolygonInter\TextPolygonInter\TextPolygonInterDoc.h
     文件       35068  2018-08-21 10:45  TextPolygonInter\TextPolygonInter\TextPolygonInterView.cpp
     文件        4125  2018-08-21 10:45  TextPolygonInter\TextPolygonInter\TextPolygonInterView.h
     目录           0  2018-08-21 10:45  TextPolygonInter\TextPolygonInter\res\
     文件       67777  2018-08-21 10:45  TextPolygonInter\TextPolygonInter\res\TextPolygonInter.ico
     文件         688  2018-08-21 10:45  TextPolygonInter\TextPolygonInter\res\TextPolygonInter.rc2
     文件        4710  2018-08-21 10:45  TextPolygonInter\TextPolygonInter\res\TextPolygonInterDoc.ico
     文件        1078  2018-08-21 10:45  TextPolygonInter\TextPolygonInter\res\Toolbar.bmp
     文件         916  2018-08-21 10:45  TextPolygonInter\TextPolygonInter\resource.h
     文件         149  2018-08-21 10:45  TextPolygonInter\TextPolygonInter\stdafx.cpp
     文件        1578  2018-08-21 10:45  TextPolygonInter\TextPolygonInter\stdafx.h
     文件         234  2018-08-21 10:45  TextPolygonInter\TextPolygonInter\targetver.h
     文件         994  2018-08-21 10:45  TextPolygonInter\TextPolygonInter.sln