www.pudn.com > MyAssignment.rar > MyAssignmentView.cpp
// MyAssignmentView.cpp : implementation of the CMyAssignmentView class
//
#include "stdafx.h"
#include "MyAssignment.h"
#include "MainFrm.h"
#include "MyAssignmentDoc.h"
#include "MyAssignmentView.h"
#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif
#define LEFT 1
#define RIGHT 2
#define BOTTOM 4
#define TOP 8
#define XL 100
#define XR 300
#define YT 100
#define YB 250
/////////////////////////////////////////////////////////////////////////////
// CMyAssignmentView
IMPLEMENT_DYNCREATE(CMyAssignmentView, CView)
BEGIN_MESSAGE_MAP(CMyAssignmentView, CView)
//{{AFX_MSG_MAP(CMyAssignmentView)
ON_COMMAND(ID_CLIPLINE, OnClipline)
ON_COMMAND(ID_CLIPPOLYGON, OnClippolygon)
ON_COMMAND(ID_CUT_EMER, OnCutEmer)
ON_WM_KEYDOWN()
//}}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()
/////////////////////////////////////////////////////////////////////////////
// CMyAssignmentView construction/destruction
CMyAssignmentView::CMyAssignmentView()
{
// TODO: add construction code here
}
CMyAssignmentView::~CMyAssignmentView()
{
}
BOOL CMyAssignmentView::PreCreateWindow(CREATESTRUCT& cs)
{
// TODO: Modify the Window class or styles here by modifying
// the CREATESTRUCT cs
return CView::PreCreateWindow(cs);
}
/////////////////////////////////////////////////////////////////////////////
// CMyAssignmentView drawing
void CMyAssignmentView::OnDraw(CDC* pDC)
{
CMyAssignmentDoc* pDoc = GetDocument();
ASSERT_VALID(pDoc);
if(m_cut==1)
{ CPen newpen(PS_SOLID,3,RGB(0,128,0));
CPen *old=pDC->SelectObject(&newpen);
pDC->Rectangle(CRect(XL,YT,XR,YB));//剪切窗口
ptset[0]=CPoint(120,150);
ptset[1]=CPoint(170,110);
ptset[2]=CPoint(0,190);
ptset[3]=CPoint(350,150);
ptset[4]=CPoint(0,250);
ptset[5]=CPoint(150,230);
ptset[6]=CPoint(200,50);
ptset[7]=CPoint(120,150);
ptset1[0]=CPoint(20,150);
ptset1[1]=CPoint(170,110);
ptset1[2]=CPoint(250,150);
ptset1[3]=CPoint(200,230);
ptset1[4]=CPoint(20,150);
LOGFONT lf;
CFont *OldFont,NewFont;
pDC->GetCurrentFont()->GetLogFont(&lf);
lf.lfCharSet=DEFAULT_CHARSET;
lf.lfHeight=35;
lf.lfWidth=20;
strcpy(lf.lfFaceName,"隶书");
NewFont.CreateFontIndirect(&lf);
OldFont=pDC->SelectObject(&NewFont);
pDC->SetBkMode(TRANSPARENT);
CBrush BrushNew,*BrushOld;
CBitmap bitmap;
bitmap.LoadBitmap(IDB_BITMAP1);
BrushNew.CreatePatternBrush(&bitmap);
BrushOld=pDC->SelectObject(&BrushNew);
pDC->BeginPath();
pDC->TextOut(0,20,"先按键盘字母X，出现要剪切的线段");
pDC->TextOut(0,50,"先按键盘字母D，出现要剪切的多边形");
pDC->SelectObject(old);
pDC->EndPath();
pDC->StrokeAndFillPath();
}
// TODO: add draw code for native data here
}
/////////////////////////////////////////////////////////////////////////////
// CMyAssignmentView printing
BOOL CMyAssignmentView::OnPreparePrinting(CPrintInfo* pInfo)
{
// default preparation
return DoPreparePrinting(pInfo);
}
void CMyAssignmentView::OnBeginPrinting(CDC* /*pDC*/, CPrintInfo* /*pInfo*/)
{
// TODO: add extra initialization before printing
}
void CMyAssignmentView::OnEndPrinting(CDC* /*pDC*/, CPrintInfo* /*pInfo*/)
{
// TODO: add cleanup after printing
}
/////////////////////////////////////////////////////////////////////////////
// CMyAssignmentView diagnostics
#ifdef _DEBUG
void CMyAssignmentView::AssertValid() const
{
CView::AssertValid();
}
void CMyAssignmentView::Dump(CDumpContext& dc) const
{
CView::Dump(dc);
}
CMyAssignmentDoc* CMyAssignmentView::GetDocument() // non-debug version is inline
{
ASSERT(m_pDocument->IsKindOf(RUNTIME_CLASS(CMyAssignmentDoc)));
return (CMyAssignmentDoc*)m_pDocument;
}
#endif //_DEBUG
/////////////////////////////////////////////////////////////////////////////
// CMyAssignmentView message handlers
void CMyAssignmentView::OnClipline()
{
// TODO: Add your command handler code here
CDC* pDC=GetDC();
CPen newpen(PS_SOLID,3,RGB(255,128,0));
CPen *old=pDC->SelectObject(&newpen);
if(flag!=1)
{MessageBox("请先按键盘字母X","警告！");}
else
{
float x,y;
int i;
int code1,code2;
RedrawWindow();
// 求两端点所在区号code
for(i=0;iXR)c=c|RIGHT;
if(ptset[i].y>YB) c=c|BOTTOM;
else if(ptset[i].yXR) c=c|RIGHT;
if(ptset[i+1].y>YB) c=c|BOTTOM;
else if(ptset[i+1].yMoveTo(ptset[i].x,ptset[i].y);
pDC->LineTo(ptset[i+1].x,ptset[i+1].y);
}
if(code1==0&&code2==0)
{pDC->MoveTo(ptset[i].x,ptset[i].y);
pDC->LineTo(ptset[i+1].x,ptset[i+1].y);
}
if(code1==0&&code2!=0)
{
pDC->MoveTo(ptset[0].x,ptset[0].y);
if((LEFT&code2)!=0) //线段与左边界相交
{
x=XL;
y=(float)ptset[i].y+(ptset[i+1].y-ptset[i].y)*(XL-ptset[i].x)/(ptset[i+1].x-ptset[i].x);
}
else if((RIGHT&code2)!=0) //线段与右边界相交
{
x=XR;
y=(float)ptset[i].y+(ptset[i+1].y-ptset[i].y)*(XR-ptset[i].x)/(ptset[i+1].x-ptset[i].x);
}
else if((BOTTOM&code2)!=0) //线段与下边界相交
{
y=YB;
x=(float)ptset[i].x+(ptset[i+1].x-ptset[i].x)*(YB-ptset[i].y)/(ptset[i+1].y-ptset[i+1].y);
}
else if((TOP&code2)!=0) //线段与上边界相交
{
y=YT;
x=(float)ptset[i].x+(ptset[i+1].x-ptset[i].x)*(YT-ptset[i].y)/(ptset[i+1].y-ptset[i].y);
}
ptset[i+1].x=(long)x;
ptset[i+1].y=(long)y;
pDC->LineTo(ptset[i+1].x,ptset[i+1].y);
}
if(code1!=0&&code2==0)
{
pDC->MoveTo(ptset[i+1].x,ptset[i+1].y);
if((LEFT&code1)!=0) //线段与左边界相交
{
x=XL;
y=(float)ptset[i].y+(ptset[i+1].y-ptset[i].y)*(XL-ptset[i].x)/(ptset[i+1].x-ptset[i].x);
}
else if((RIGHT&code1)!=0) //线段与右边界相交
{
x=XR;
y=(float)ptset[i].y+(ptset[i+1].y-ptset[i].y)*(XR-ptset[i].x)/(ptset[i+1].x-ptset[i].x);
}
else if((BOTTOM&code1)!=0) //线段与下边界相交
{
y=YB;
x=(float)ptset[i].x+(ptset[i+1].x-ptset[i].x)*(YB-ptset[i].y)/(ptset[i+1].y-ptset[i+1].y);
}
else if((TOP&code1)!=0) //线段与上边界相交
{
y=YT;
x=(float)ptset[i].x+(ptset[i+1].x-ptset[i].x)*(YT-ptset[i].y)/(ptset[i+1].y-ptset[i].y);
}
ptset[i].x=(long)x;
ptset[i].y=(long)y;
pDC->LineTo(ptset[i].x,ptset[i].y);
}
}
}
}
void CMyAssignmentView::OnClippolygon()
{
// TODO: Add your command handler code here
CDC* pDC=GetDC();
CPen newpen(PS_SOLID,1,RGB(128,128,0));
CPen *old=pDC->SelectObject(&newpen);
if(flag!=2)
{ MessageBox("请先按键盘字母D","警告！");}
else{
//else
int i,k;
int code1,code2;
int M=5;
RedrawWindow();
// 求两端点所在区号code
k=0;
for(i=0;iXL)c=0;
code1=c;
c=0;
if(ptset1[i+1].xXL) c=0;
code2=c;
if(code1!=0&&code2==0)
{
pt[k].x=XL;
pt[k].y=ptset1[i].y+(ptset1[i+1].y-ptset1[i].y)*(XL-ptset1[i].x)/(ptset1[i+1].x-ptset1[i].x);
pt[k+1].x=ptset1[i+1].x;
pt[k+1].y=ptset1[i+1].y;
k=k+2;
}
if(code1==0&&code2==0)
{
if(k==0)
{
pt[k].x=ptset1[i].x;
pt[k].y=ptset1[i].y;
pt[k+1].x=ptset1[i+1].x;
pt[k+1].y=ptset1[i+1].y;
k=k+2;
}
if(k!=0)
{
pt[k].x=ptset1[i+1].x;
pt[k].y=ptset1[i+1].y;
k=k+1;
}
}
if(code1==0&&code2!=0)
{
pt[k].x=XL;
pt[k].y=ptset1[i].y+(ptset1[i+1].y-ptset1[i].y)*(XL-ptset1[i].x)/(ptset1[i+1].x-ptset1[i].x);
k++;
}
}
pt[k].x=pt[0].x;
pt[k].y=pt[0].y;
M=k+1;
k=0;
for(i=0;iXR) c=2;
code1=c;
c=0;
if(pt[i+1].xXR) c=2;
code2=c;
if(code1==0&&code2==0)
{
if(k==0)
{
pts[k].x=pt[i].x;
pts[k].y=pt[i].y;
pts[k+1].x=pt[i+1].x;
pts[k+1].y=pt[i+1].y;
k=k+2;
}
if(k!=0)
{
pts[k].x=pt[i+1].x;
pts[k].y=pt[i+1].y;
k++;
}
}
if(code1!=0&&code2==0)
{
pts[k].x=XR;
pts[k].y=pt[i].y+(pt[i+1].y-pt[i].y)*(XR-pt[i].x)/(pt[i+1].x-pt[i].x);
pts[k+1].x=pt[i+1].x;
pts[k+1].y=pt[i+1].y;
k=k+2;
}
if(code1==0&&code2!=0)
{
pts[k].x=XR;
pts[k].y=pt[i].y+(pt[i+1].y-pt[i].y)*(XR-pt[i].x)/(pt[i+1].x-pt[i].x);
k=k+1;
}
}
//增加对最后一条边的判断
pts[k]=pts[0];
M=k+1;
k=0;
for(i=0;iYB) c=4;
else if(pts[i].yYB) c=4;
else if(pts[i+1].yYT) c=0;
else if(ptse[i].yYT) c=0;
else if(ptse[i+1].yMoveTo(p[0]);
for(int j=1;j<=M;j++)
{
pDC->LineTo(p[j]);
}
}
}
void CMyAssignmentView::OnCutEmer()
{
// TODO: Add your command handler code here
m_cut=1;
CMainFrame *pMainFrame=(CMainFrame*)AfxGetMainWnd();
pMainFrame->m_dbx=true;
pMainFrame->m_xainduan=true;
Invalidate();
}
void CMyAssignmentView::OnKeyDown(UINT nChar, UINT nRepCnt, UINT nFlags)
{
// TODO: Add your message handler code here and/or call default
if(nChar=='X')
{
CDC* pDC=GetDC();
CPen newpen(PS_SOLID,3,RGB(255,128,0));
CPen *old=pDC->SelectObject(&newpen);
flag=1;
for(int i=0;iMoveTo(ptset[i]);
pDC->LineTo(ptset[i+1]);
i++;
}
}
else if(nChar=='D')
{
CDC* pDC=GetDC();
CPen newpen(PS_SOLID,3,RGB(128,128,0));
CPen *old=pDC->SelectObject(&newpen);
flag=2;
pDC->MoveTo(ptset1[0]);
for(int i=1;i<5;i++)
{
pDC->LineTo(ptset1[i]);
}}
CView::OnKeyDown(nChar, nRepCnt, nFlags);
}