curversimpleview.cpp

用两种输入曲线的方式和获取点的方法

// CurverSimpleView.cpp : implementation of the CCurverSimpleView class
//

#include "stdafx.h"
#include "CurverSimple.h"

#include "CurverSimpleDoc.h"
#include "CurverSimpleView.h"

#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif

/////////////////////////////////////////////////////////////////////////////
// CCurverSimpleView

IMPLEMENT_DYNCREATE(CCurverSimpleView, CView)

BEGIN_MESSAGE_MAP(CCurverSimpleView, CView)
	//{{AFX_MSG_MAP(CCurverSimpleView)
	ON_COMMAND(ID_DATAIMPORT, OnDataimport)
	ON_WM_SIZE()
	ON_WM_CREATE()
	ON_WM_DESTROY()
	ON_WM_LBUTTONDOWN()
	ON_COMMAND(ID_DOUGLAS_PEUKER, OnDouglasPeuker)
	ON_COMMAND(ID_CLEAR, OnClear)
	ON_COMMAND(ID_DRAWNEWLINE, OnDrawnewline)
	ON_WM_MOUSEMOVE()
	ON_WM_LBUTTONUP()
	ON_COMMAND(ID_JUAGEDISTANCE, OnJuagedistance)
	ON_COMMAND(ID_JUAGEPOINTINOROUT, OnJuagepointinorout)
	ON_COMMAND(ID_DISPLAY_RESULT, OnDisplayResult)
	//}}AFX_MSG_MAP
	// Standard printing commands
	ON_COMMAND(ID_FILE_PRINT, CView::OnFilePrint)
	ON_COMMAND(ID_FILE_PRINT_DIRECT, CView::OnFilePrint)
	ON_COMMAND(ID_FILE_PRINT_PREVIEW, CView::OnFilePrintPreview)
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CCurverSimpleView construction/destruction

CCurverSimpleView::CCurverSimpleView()
{
	// TODO: add construction code here
	m_bDraw=FALSE;
	m_MouseDown=FALSE;
	FlagEnd=0;
	m_MouseDownNum=0;
	m_display=FALSE;
	m_newdraw=FALSE;
	m_PtInTriangle=0;
}
CCurverSimpleView::~CCurverSimpleView()
{
}

BOOL CCurverSimpleView::PreCreateWindow(CREATESTRUCT& cs)
{
	// TODO: Modify the Window class or styles here by modifying
	//  the CREATESTRUCT cs
	cs.style|=WS_CLIPSIBLINGS|WS_CLIPCHILDREN;
	return CView::PreCreateWindow(cs);
}
/////////////////////////////////////////////////////////////////////////////
// CCurverSimpleView drawing

void CCurverSimpleView::OnDraw(CDC* pDC)
{
	CCurverSimpleDoc* pDoc = GetDocument();
	ASSERT_VALID(pDoc);
	// TODO: add draw code for native data here
	wglMakeCurrent(pDC->GetSafeHdc(),m_hglrc);//该语句要放在以下两句的下面
	glClearColor(1.0,1.0,1.0,0);
	glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);
	GLDraw();
	/*if(m_display)
		display(selectedpoints);*/
	wglMakeCurrent(pDC->GetSafeHdc(),NULL);
	SwapBuffers(pDC->GetSafeHdc());
}
/////////////////////////////////////////////////////////////////////////////
// CCurverSimpleView printing
BOOL CCurverSimpleView::OnPreparePrinting(CPrintInfo* pInfo)
{
	// default preparation
	return DoPreparePrinting(pInfo);
}
void CCurverSimpleView::OnBeginPrinting(CDC* /*pDC*/, CPrintInfo* /*pInfo*/)
{
	// TODO: add extra initialization before printing
}

void CCurverSimpleView::OnEndPrinting(CDC* /*pDC*/, CPrintInfo* /*pInfo*/)
{
	// TODO: add cleanup after printing
}
/////////////////////////////////////////////////////////////////////////////
// CCurverSimpleView diagnostics

#ifdef _DEBUG
void CCurverSimpleView::AssertValid() const
{
	CView::AssertValid();
}
void CCurverSimpleView::Dump(CDumpContext& dc) const
{
	CView::Dump(dc);
}

CCurverSimpleDoc* CCurverSimpleView::GetDocument() // non-debug version is inline
{
	ASSERT(m_pDocument->IsKindOf(RUNTIME_CLASS(CCurverSimpleDoc)));
	return (CCurverSimpleDoc*)m_pDocument;
}
#endif //_DEBUG
/////////////////////////////////////////////////////////////////////////////
// CCurverSimpleView message handlers

void CCurverSimpleView::OnDataimport() 
{
	// TODO: Add your command handler code here	
	CFileDialog filedlg(TRUE,NULL,NULL,OFN_ALLOWMULTISELECT|OFN_HIDEREADONLY|OFN_OVERWRITEPROMPT,"DAT FILE(*.dat)|*.dat|ALL FILE(*.*)");
	if (filedlg.DoModal() == IDCANCEL)
		return;
	CString filename;
	filename=filedlg.GetPathName();
	CStdioFile myfile(filename,CFile::modeRead);//得到数据流
	long		total;
	total = myfile.GetLength();//得到数据流的长度
	CString		str;
	int			pos;
	int count=0;
	Orignpoint point;
	//读取每一行的数据
   while(myfile.GetPosition()!=total)
   {
	   myfile.ReadString(str);
	   str.TrimLeft();
	   pos=str.Find(",");
	   point.pointID=atoi(str.Left(pos));//ID从0开始　
	   str=str.Mid(pos+1);//从pos+1起取所有的字符　
	   pos=str.Find(",");
	   point.pointofxy.x=atof(str.Left(pos));//从0开始取字符到pos位置
	   str=str.Mid(pos+1);
	   point.pointofxy.y=atof(str);
	   point.usedFlag=0;//未使用过用0表示
	   OrignVS.push_back(point);
   }
   Invalidate(false);
   for(int i=0;i<OrignVS.size();i++)
   {
	   array[i][0]=OrignVS[i].pointofxy.x/100.0;
	   array[i][1]=OrignVS[i].pointofxy.y/100.0;
	   array[i][2]=0.0;
   }
   m_bDraw=TRUE;
}
void CCurverSimpleView::InitPara()
{
	/*void glMap1{fd}(GLenum target,TYPE u1,TYPE u2,GLint stride, GLint order,const TYPE *points);
	函数的第一个参数target指出控制顶点的意义以及在参数points中需要提供多少值，
   参数points指针可以指向控制点集、RGBA颜色值或纹理坐标串等。
  参数u1和u2，指明变量U的范围，U一般从0变化到1。参数stride是跨度
   ，表示在每块存储区内浮点数或双精度数的个数，即两个控制点间的偏移量，
   比如上例中的控制点集ctrpoint[4][3]的跨度就为3，即单个控制点的坐标元素个数。函数参数order是次数加1，
   叫阶数，与控制点数一致。*/
	glMap1f(GL_MAP1_VERTEX_3,0.0,1.0,3,13,&array[0][0]);
	glEnable(GL_MAP1_VERTEX_3);
	glShadeModel(GL_FLAT);
}
/*void CCurverSimpleView::GLDrawPoint(CPoint pt)
{
	if(m_MouseDown)
	{
		glPointSize(4);
	glBegin(GL_POINTS);
	glColor3f(0.f,1.f,0.f);
	glVertex2f(GLfloat(pt.x/100.0),GLfloat(pt.y/100.0));
	}
	return;
}*/
void CCurverSimpleView::GLDraw()
{
	if(!m_bDraw)
		return;
	InitPara();
	glLineWidth(3);		
	for(int i=0;i<OrignVS.size();i++)
	{
		glBegin(GL_LINE_STRIP);
		glColor3f(1.f,0.f,0.f);
		//glVertex2f(OrignVS[i].pointofxy.x/100,OrignVS[i].pointofxy.y/100);
		 //glEvalCoord2f(OrignVS[i].pointofxy.x/100,OrignVS[i].pointofxy.y/100);
		glEvalCoord1f((GLfloat)i/30.0);
	}
	if(m_display)
	{
		float array[M][3];
		for(int i=0;i<selectedpoints.size();i++)
		{
		array[i][0]=selectedpoints[i].pointofxy.x/100.0;
		array[i][1]=selectedpoints[i].pointofxy.y/100.0;
		array[i][2]=0.0;
		}
     glMap1f(GL_MAP1_VERTEX_3,0.0,1.0,3,selectedpoints.size(),&array[0][0]);
     glEnable(GL_MAP1_VERTEX_3);
	 glShadeModel(GL_FLAT);
		for(i=0;i<selectedpoints.size();i++)
	{
		glBegin(GL_LINE_LOOP);
		glColor3f(0.f,1.f,0.f);
		//glVertex3f(array[i][0],array[i][1],array[i][2]);
		glEvalCoord1f((GLfloat)i/20);
	}
	}
	glEnd();
	/*glFlush();
	glBegin(GL_LINES);
	glColor3f(1.f,0.f,0.f);
	glVertex3f(0.f,0.f,0.f);
	glVertex3f(1.f,0.f,0.f);
	glVertex3f(1.f,0.f,0.f);
	glVertex3f(0.9f,0.1f,0.f);
	glVertex3f(1.0f,0.f,0.f);
	glVertex3f(1.0f,-0.1f,0.f);
	glColor3f(0.f,1.f,0.f);
	glVertex3f(0.f,0.f,0.f);
	glVertex3f(0.f,1.f,0.f);
	glVertex3f(0.f,1.f,0.f);
	glVertex3f(0.1f,1.0f,0.f);
	glVertex3f(0.0f,1.0f,0.0f);
	glVertex3f(-0.1f,0.9f,0.0f);
	glColor3f(0.f,0.f,1.f);
	glVertex3f(0.f,0.f,0.f);
	glVertex3f(0.f,0.f,1.f);
	glVertex3f(0.f,0.f,1.f);
	glVertex3f(0.f,0.1f,0.9f);
	glVertex3f(0.f,0.f,1.f);
	glVertex3f(0.f,0.1f,0.9f);
	glEnd();*/
}
void CCurverSimpleView::OnSize(UINT nType, int cx, int cy) 
{
	CView::OnSize(nType, cx, cy);
	
	// TODO: Add your message handler code here
	/*GLsizei w=cx;
	GLsizei h=cy;
	if(!h)
		return;
	CClientDC dc(this);
	wglMakeCurrent(dc.m_hDC,m_hglrc);
	glViewport(0,0,w,h);
	glPushMatrix();
	glMatrixMode(GL_PROJECTION);
	glLoadIdentity(); 
	glMatrixMode(GL_MODELVIEW);
	glTranslatef(0.f,0.f,-4.f);
	glPopMatrix();
	wglMakeCurrent(NULL,NULL);
	Invalidate(TRUE);*/
	CClientDC clientDC(this);
	wglMakeCurrent(clientDC.m_hDC,m_hglrc);
    int w=cx;
	int h=cy;
    glViewport(0, 0, w, h);
	glPushMatrix();
	glMatrixMode(GL_PROJECTION);
	glLoadIdentity();
	gluPerspective(40.0,double(cx)/double(cy),0.1f,10.f);
	glTranslatef(-2.3f,-1.8f,-4.f);
	glMatrixMode(GL_MODELVIEW);//没有该语句无法显示物体
	glPopMatrix();
    wglMakeCurrent(NULL,NULL);
	Invalidate(TRUE);
}
int CCurverSimpleView::OnCreate(LPCREATESTRUCT lpCreateStruct) 
{
	if (CView::OnCreate(lpCreateStruct) == -1)
		return -1;
	
	// TODO: Add your specialized creation code here
	PIXELFORMATDESCRIPTOR pfd={
		sizeof(PIXELFORMATDESCRIPTOR),
		1,
		PFD_DRAW_TO_WINDOW|
		PFD_SUPPORT_OPENGL|
		PFD_DOUBLEBUFFER|PFD_SUPPORT_GDI,
		PFD_TYPE_RGBA,
		24,
		0,0,0,0,0,0,
		0,
		0,
		0,
		0,0,0,0,
		32,
		0,
		0,
		PFD_MAIN_PLANE,
		0,
		0,0,0
	};
	//获取当前DC句柄
	CClientDC clientdc(this);
	//返回最佳匹配的像素格式
	int pf=ChoosePixelFormat(clientdc.m_hDC,&pfd);
	//设置像素格式
	BOOL rt=SetPixelFormat(clientdc.m_hDC,pf,&pfd);
	//crate rendering context
	m_hglrc=wglCreateContext(clientdc.m_hDC);
	return 0;
}
void CCurverSimpleView::OnDestroy() 
{
	CView::OnDestroy();
	
	// TODO: Add your message handler code here
	if(wglGetCurrentContext()!=NULL)
		wglMakeCurrent(NULL,NULL);
	if(m_hglrc!=NULL)
	{
		wglDeleteContext(m_hglrc);
		m_hglrc=NULL;//？一定要这一句吗
	}
}


void CCurverSimpleView::OnLButtonDown(UINT nFlags, CPoint point) 
{
	// TODO: Add your message handler code here and/or call default
	CMainFrame*pFrame=(CMainFrame*)AfxGetApp()->m_pMainWnd;
	CStatusBar*pStatus=&pFrame->m_wndStatusBar;
	CString str;
	//int count=0;
	if(pStatus)
	{
		str.Format("x=%f",float(point.x));
		pStatus->SetPaneText(1,str);
		str.Format("y=%f",float(point.y));
		pStatus->SetPaneText(2,str);
	}
	//GLDrawPoint(point);
	/*glPointSize(i*2);
　　　　　　glBegin (GL_POINTS);*/
	Orignpoint temppoint;
	if(m_bDraw)
	{
		//temppoint.pointID=count;
		//count++;
		temppoint.pointID=m_MouseDownNum;
		CString str1;
		str1.Format("%d",m_MouseDownNum);
		//str=atoc(m_MouseDownNum);
		CClientDC dc(this);
		dc.SetPixel(point,RGB(0,0,0));
		dc.TextOut(point.x,point.y,str1);
		temppoint.pointofxy.x=point.x;
		temppoint.pointofxy.y=point.y;
		temppoint.usedFlag=false;
		featurepoints.push_back(temppoint);
		//m_MouseDownNum+=1;

	}

		/*pt=point;
		ptbegin=point;
		SetCapture();*/
	
		if(m_newdraw=TRUE)
	{	m_ptStart=point;
		m_ptOld=point;
		temppoint.pointID=m_MouseDownNum;
		CString str1;
		str1.Format("%d",m_MouseDownNum);
		m_MouseDownNum++;
		temppoint.pointofxy.x=point.x;
		temppoint.pointofxy.y=point.y;
		temppoint.usedFlag=false;
		featurepoints2.push_back(temppoint);
		SetCapture();
		CRect rect;
		GetClientRect(&rect);
		ClientToScreen(&rect);
		ClipCursor(&rect);
	}	
		if(m_PtInTriangle==1)
		{
			CClientDC dc(this);
			dc.TextOut(point.x,point.y,"▲");
			TrianglePt.push_back(point);
			if(TrianglePt.size()>=4)
			m_PtInTriangle=2;
		}
		
	CView::OnLButtonDown(nFlags, point);
}
/*void CCurverSimpleView::OnGetfeaturepoint() 
{
	// TODO: Add your command handler code here
	m_MouseDown=TRUE;
	featurepoints.size();
}*/
void CCurverSimpleView::GetLineABC(CPoint pt1,CPoint pt2,float&A,float&B,float&C)
{
	float dis=0.0;
	dis=sqrt(pow((pt1.x-pt2.x),2)+pow((pt1.y-pt2.y),2));
	A=(pt1.y-pt2.y)/dis;
	B=(pt2.x-pt2.x)/dis;
	C=(pt1.x*pt2.y-pt2.x*pt1.y)/dis;
}
int CCurverSimpleView::GetSelectpointID(vector<Orignpoint>fps,int&id,float fa)
{
	float a,b,c,max,temp;
	max=0.0;
	/*if(fps.size()<=2)
		return -1;*/
	if(fps.size()<=2)
	{
		FlagEnd=1;
		id=fps[fps.size()-1].pointID;
		return 0;
	}
	FlagEnd=0;
	GetLineABC(fps[0].pointofxy,fps[fps.size()-1].pointofxy,a,b,c);//怎么有9个点
	for(int i=1;i<fps.size()-1;i++)//去掉第一点和最后一个点