pictureview.cpp

画任意一个三角形

// PictureView.cpp : implementation of the CPictureView class
//

#include "stdafx.h"
#include "Picture.h"

#include "PictureDoc.h"
#include "PictureView.h"
#include "ROTATE.h"	
#include <math.h>
#include "Zoom.h"
#include "Tran.h"
#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif

/////////////////////////////////////////////////////////////////////////////
// CPictureView

IMPLEMENT_DYNCREATE(CPictureView, CView)

BEGIN_MESSAGE_MAP(CPictureView, CView)
//{{AFX_MSG_MAP(CPictureView)
ON_UPDATE_COMMAND_UI(ID_CIRCLE, OnUpdateCircle)
ON_UPDATE_COMMAND_UI(ID_LINE, OnUpdateLine)
ON_COMMAND(ID_LINE, OnLine)
ON_COMMAND(ID_CIRCLE, OnCircle)
ON_COMMAND(ID_RECTANGLE, OnRectangle)
ON_UPDATE_COMMAND_UI(ID_RECTANGLE, OnUpdateRectangle)
ON_WM_LBUTTONDOWN()
ON_WM_LBUTTONUP()
ON_WM_MOUSEMOVE()
	ON_COMMAND(ID_ROTATE, OnRotate)
	ON_UPDATE_COMMAND_UI(ID_ROTATE, OnUpdateRotate)
	ON_COMMAND(ID_ZOOM, OnZoom)
	ON_COMMAND(ID_TRANSLATE, OnTranslate)
	//}}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()

/////////////////////////////////////////////////////////////////////////////
// CPictureView construction/destruction

CPictureView::CPictureView()
{
	// TODO: add construction code here
	bTriangle=false;
	bCircle=false;
	bLine=false;
	bFirst=false;
	bFirst=false;
	bSecond=false;
	bThird=false;
bFinish=false;
bValid=false;
	x=0;
	y=0;
	x1=0;
	y1=0;
	x2=0;
	y2=0;
}

CPictureView::~CPictureView()
{
}

BOOL CPictureView::PreCreateWindow(CREATESTRUCT& cs)
{
	// TODO: Modify the Window class or styles here by modifying
	//  the CREATESTRUCT cs
	
	return CView::PreCreateWindow(cs);
}

/////////////////////////////////////////////////////////////////////////////
// CPictureView drawing

void CPictureView::OnDraw(CDC* pDC)
{
	CPictureDoc* pDoc = GetDocument();
	ASSERT_VALID(pDoc);
	if(bTriangle)
	{
		pDC->MoveTo(x,y);
		if(bSecond)
		{
		pDC->LineTo(x1,y1);
		}
		if(bThird)
		{
		pDC->LineTo(x1,y1);
		pDC->LineTo(x2,y2);
		}
if(bFinish)
{
		pDC->LineTo(x1,y1);
		pDC->LineTo(x2,y2);
		pDC->LineTo(x,y);

}

	}
	
	
	
	// TODO: add draw code for native data here
}

/////////////////////////////////////////////////////////////////////////////
// CPictureView printing

BOOL CPictureView::OnPreparePrinting(CPrintInfo* pInfo)
{
	// default preparation
	return DoPreparePrinting(pInfo);
}

void CPictureView::OnBeginPrinting(CDC* /*pDC*/, CPrintInfo* /*pInfo*/)
{
	// TODO: add extra initialization before printing
}

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

/////////////////////////////////////////////////////////////////////////////
// CPictureView diagnostics

#ifdef _DEBUG
void CPictureView::AssertValid() const
{
	CView::AssertValid();
}

void CPictureView::Dump(CDumpContext& dc) const
{
	CView::Dump(dc);
}

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

/////////////////////////////////////////////////////////////////////////////
// CPictureView message handlers

void CPictureView::OnUpdateCircle(CCmdUI* pCmdUI) 
{
	// TODO: Add your command update UI handler code here
	if(bCircle)
	{
		pCmdUI->SetRadio();
	}
	else
	{
		pCmdUI->SetRadio(false);
	}
	
	pCmdUI->Enable();
}

void CPictureView::OnUpdateLine(CCmdUI* pCmdUI) 
{
	// TODO: Add your command update UI handler code here
	if(bLine)
	{
		pCmdUI->SetRadio();
	}
	else
	{
		pCmdUI->SetRadio(false);
	}
	
	pCmdUI->Enable();
	
}

void CPictureView::OnLine() 
{
	// TODO: Add your command handler code here
	bTriangle=false;
	bCircle=false;
	bLine=true;
//	bFirst=true;
}

void CPictureView::OnCircle() 
{
	// TODO: Add your command handler code here
	
	bTriangle=false;
	bCircle=true;
	bLine=false;
//	bFirst=true;
	
}

void CPictureView::OnRectangle() 
{
	// TODO: Add your command handler code here
	bTriangle=true;
	bCircle=false;
	bLine=false;
	bFirst=true;
//	bFirst=true;
	
}

void CPictureView::OnUpdateRectangle(CCmdUI* pCmdUI) 
{
	// TODO: Add your command update UI handler code here
	pCmdUI->Enable();
	if(bTriangle)
	{
		pCmdUI->SetRadio();
	}
	else
	{
		pCmdUI->SetRadio(false);
	}
	
}



void CPictureView::OnLButtonDown(UINT nFlags, CPoint point) 
{
	// TODO: Add your message handler code here and/or call default
//bFirst=true;
	if(bFirst)
	{
		x=point.x;
		y=point.y;
	x1=point.x;//消除到（0，0）的直线
	y1=point.y;

		bSecond=true;
		bFirst=false;
Invalidate(true);
		return;
	}

	if(bSecond)
	{
	x1=point.x;
	y1=point.y;
	x2=point.x;//消除到（0，0）的直线
	y2=point.y;
	bSecond=false;
	bThird=true;
Invalidate(true);
	return;
	}
	if(bThird)
	{
	x2=point.x;
	y2=point.y;
	bThird=false;
	bThird=false;
	bFinish=true;
Invalidate(true);

	}

	CView::OnLButtonDown(nFlags, point);
}

void CPictureView::OnLButtonUp(UINT nFlags, CPoint point) 
{
	// TODO: Add your message handler code here and/or call default
//	bFirst=false;
//	x1=point.x;
//	y1=point.y;
	CView::OnLButtonUp(nFlags, point);
}

void CPictureView::OnMouseMove(UINT nFlags, CPoint point) 
{
	// TODO: Add your message handler code here and/or call default
	if(bSecond)
{	x1=point.x;
	y1=point.y;
}
if(bThird)
{	x2=point.x;
	y2=point.y;
	bFinish=true;
}

//	this->InvalidateRect(&CRect(x-2,y-2,point.x+5,point.y+5),true);
Invalidate(true);

	CView::OnMouseMove(nFlags, point);
}

void CPictureView::OnRotate() 
{
	// TODO: Add your command handler code here
	CROTATE angle;
	int result=angle.DoModal();
	if(result==IDOK)
	{
	int c=angle.m_angle;
if(bTriangle)
{
Rotate(x,y,c);
Rotate(x1,y1,c);
Rotate(x2,y2,c);
Invalidate(true);

}
	
	
	}
}

void CPictureView::OnUpdateRotate(CCmdUI* pCmdUI) 
{
	// TODO: Add your command update UI handler code here
	pCmdUI->Enable();
}

void CPictureView::Rotate(int& x,int& y, int angle)
{
	int x1=x;
	int y1=y;
	double a=3.1415926/180;
	int c=cos(a*360)+0.5;
x=(int)(x1*cos(angle*a)-y1*sin(angle*a)+0.5);
y=(int)(x1*sin(angle*a)+y1*cos(angle*a)+0.5);

}

void CPictureView::OnZoom() 
{
	// TODO: Add your command handler code here
	CZoom zoom;
	int result=zoom.DoModal();
	if(result==IDOK)
	{
		double zx=zoom.m_x;
		double zy=zoom.m_y;
		if(bTriangle)
		{
			Zoom(x,y,zx,zy);
			Zoom(x1,y1,zx,zy);
			Zoom(x2,y2,zx,zy);
			Invalidate(true);
			
		}
	}
}
void CPictureView::OnTranslate() 
{
	// TODO: Add your command handler code here
	CTran tran;
	int result=tran.DoModal();
	if(result==IDOK)
	{
		int tx=tran.m_x;
		int ty=tran.m_y;
		if(bTriangle)
		{
			Tran(x,y,tx,ty);
			Tran(x1,y1,tx,ty);
			Tran(x2,y2,tx,ty);
			Invalidate(true);
			
		}
	}	
}

void CPictureView::Zoom(int &x, int &y, double zx, double zy)
{
x=x*zx+0.5;
y=y*zy+0.5;

}

void CPictureView::Tran(int &x, int &y, int tx, int ty)
{
x+=tx;
y+=ty;
}