3D图形编程

开发平台：
Visual C++

ProjectView.cpp：源码内容
							// ProjectView.cpp : implementation file
//
#include "stdafx.h"
#include "Test1.h"
#include "ProjectView.h"
#include "MainFrm.h"
#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif
extern GLfloat Databuf[ArrayOne][ArrayTwo];
extern bool gbIsGetData;
extern GLfloat  xrof,yrof,zrof;//各坐标轴倾角
/////////////////////////////////////////////////////////////////////////////
// CProjectView
IMPLEMENT_DYNCREATE(CProjectView, CView)
CProjectView::CProjectView()
{
	m_WitchPro = 0;
	this->m_ProName = "";	
	m_pDC = NULL;
	m_bShowBmp = false;
}
CProjectView::~CProjectView()
{
	if (m_pDC)
	{
		delete m_pDC;
		m_pDC = NULL;
	}
}
BEGIN_MESSAGE_MAP(CProjectView, CView)
	//{{AFX_MSG_MAP(CProjectView)
	ON_WM_ERASEBKGND()
	ON_WM_MOUSEMOVE()
	//}}AFX_MSG_MAP
	ON_MESSAGE(MESSAGE_ANGLECHANGING,AngleChanging)
	ON_MESSAGE(MESSAGE_BMPHASBECOPIED,ShowBmpMessageFun)
END_MESSAGE_MAP()
/////////////////////////////////////////////////////////////////////////////
// CProjectView drawing
void CProjectView::OnDraw(CDC* pDC)
{
	CDocument* pDoc = GetDocument();
	// TODO: add draw code here
	CFont *OldFont = pDC->SelectObject(&this->m_pfr->m_13Font);
	this->DrawCoordinate(pDC);
//	this->DrawRect(pDC);
	if (this->m_bShowBmp)
	{
		HBITMAP hBmp = this->m_pfr->m_pView->m_hBmp;
		this->ShowSelArear(hBmp,pDC);
	}
	pDC->SelectObject(OldFont);	
}
/////////////////////////////////////////////////////////////////////////////
// CProjectView diagnostics
#ifdef _DEBUG
void CProjectView::AssertValid() const
{
	CView::AssertValid();
}
void CProjectView::Dump(CDumpContext& dc) const
{
	CView::Dump(dc);
}
#endif //_DEBUG
/////////////////////////////////////////////////////////////////////////////
// CProjectView message handlers
void CProjectView::OnInitialUpdate() 
{
	CView::OnInitialUpdate();	
	m_pfr = (CMainFrame*)AfxGetApp()->m_pMainWnd;
}
BOOL CProjectView::OnEraseBkgnd(CDC* pDC) 
{
	TEXTMETRIC tm;
	pDC->GetTextMetrics(&tm);
	CBrush Brush (BLACK); 
    CBrush* pOldBrush = pDC->SelectObject(&Brush);     
	CRect ViewClip; 
	pDC->GetClipBox(&ViewClip);     
	pDC->PatBlt(ViewClip.left,ViewClip.top,ViewClip.Width(),ViewClip.Height(),PATCOPY);    
	pDC->SelectObject (pOldBrush );
	return TRUE;
}
void CProjectView::DrawRect(CDC *pDC)
{
	CRect rc;
	this->GetClientRect(&rc);
	int cx = rc.right;
	int cy = rc.bottom;
	TEXTMETRIC tm;
	pDC->GetTextMetrics(&tm);
	int yStart = 10;
	int nCharWith = tm.tmHeight;
	CPen Brightpen(PS_SOLID, 1, RED);
	CPen *pOldPen = pDC->SelectObject(&Brightpen);
	pDC->SetTextAlign(TA_RIGHT);
	pDC->MoveTo(cx - nCharWith*5 - 2, 0);
	pDC->LineTo(cx - nCharWith*5 - 2, rc.bottom-30);
	pDC->TextOut(cx ,10, "成图参数表");
	pDC->SetTextColor(BLUE);
	pDC->MoveTo(cx - nCharWith*5 - 1, 10 + nCharWith + 1);
	pDC->LineTo(cx , 10 + nCharWith + 1);
	pDC->MoveTo(cx - nCharWith*5 - 1, rc.bottom-30);
	pDC->LineTo(cx , rc.bottom-30);
	pDC->SetTextAlign(TA_LEFT);
	
	pDC->TextOut(cx - nCharWith*5, 10 + nCharWith + 2, "○X轴倾角");
	pDC->TextOut(cx - nCharWith*5, 10 + nCharWith*3 + 4, "○Y轴倾角");
	pDC->TextOut(cx - nCharWith*5, 10 + nCharWith*5 + 6, "○Z轴倾角");
	pDC->SetTextColor(BRIGHT);
	pDC->TextOut(cx - nCharWith*5, 10 + nCharWith*2 + 2, this->GetAngle(xrof));
	pDC->TextOut(cx - nCharWith*5, 10 + nCharWith*4 + 4, this->GetAngle(yrof));
	pDC->TextOut(cx - nCharWith*5, 10 + nCharWith*6 + 6, this->GetAngle(zrof));
	
	pDC->SelectObject(pOldPen);
}
void CProjectView::DrawCoordinate(CDC *pDC)
{
	CRect rc;
	GetClientRect(&rc);
	pDC->SetTextAlign(TA_CENTER);
	pDC->SetTextColor(YELLOW);
	pDC->SetBkMode(1);
	
	CPen Greenpen(PS_SOLID,1,GREEN);
	CPen *pOldPen = pDC->SelectObject(&Greenpen);
	CString Show = "选取部位投影窗口" + m_ProName;
	pDC->TextOut(rc.right/2,2,Show);
	//x轴
	pDC->MoveTo(10,rc.bottom-20);
	pDC->LineTo(rc.right-30,rc.bottom-20);
	pDC->MoveTo(rc.right-30,rc.bottom-20);
	pDC->LineTo(rc.right-30-5,rc.bottom-20-5);
	pDC->MoveTo(rc.right-30,rc.bottom-20);
	pDC->LineTo(rc.right-30-5,rc.bottom-20+5);
	//y轴
	pDC->MoveTo(10,rc.bottom-20);
	pDC->LineTo(10,25);
	pDC->MoveTo(10,25);
	pDC->LineTo(5,30);
	pDC->MoveTo(10,25);
	pDC->LineTo(15,30);
	if (::gbIsGetData)
		return;
	pDC->SelectObject(pOldPen);
}
CString CProjectView::GetAngle(int Angle)
{
	CString strAngle = "0";
	if (Angle > -360 && Angle < 360)
		strAngle.Format("%d度", Angle);
	else
		strAngle.Format("%d度",Angle%360);
	return strAngle;
}
void CProjectView::AngleChanging(LPARAM lp, WPARAM wp)
{
	this->InvalidatethisRect();
}	
void CProjectView::InvalidatethisRect()
{
	CRect rc;
	GetClientRect(&rc);
	int cx = rc.right;
	int cy = rc.bottom;
	this->InvalidateRect(CRect(15,21,cx-15,cy-30));
}
void CProjectView::OnMouseMove(UINT nFlags, CPoint point) 
{
	this->SetFocus();	
	CView::OnMouseMove(nFlags, point);
}
void CProjectView::ShowSelArear(HBITMAP hBmp, CDC *pDC)
{
	HBITMAP OldBitmap;
	CDC MemDC;
	MemDC.CreateCompatibleDC(pDC);
	CRect rect;
	GetClientRect(rect);
	OldBitmap=(HBITMAP)MemDC.SelectObject(hBmp);
	pDC->BitBlt(20,20,rect.right,rect.bottom,&MemDC,0,0,SRCCOPY);
	MemDC.SelectObject(OldBitmap);
}
void CProjectView::ShowBmpMessageFun(LPARAM lp, WPARAM wp)
{
	m_bShowBmp = true;
	this->InvalidatethisRect();
}

						