2dcubedlg.cpp

visual c++ 实例编程

// 2DCubeDlg.cpp : implementation file
//

#include "stdafx.h"
#include "2DCube.h"
#include "2DCubeDlg.h"

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

#define SAFE_RELEASE(a) {if (a != NULL) {delete a;a = NULL;}} 

/////////////////////////////////////////////////////////////////////////////
// CMy2DCubeDlg dialog

CMy2DCubeDlg::CMy2DCubeDlg(CWnd* pParent /*=NULL*/)
: CDialog(CMy2DCubeDlg::IDD, pParent)
{
	//{{AFX_DATA_INIT(CMy2DCubeDlg)
	// NOTE: the ClassWizard will add member initialization here
	//}}AFX_DATA_INIT
	// Note that LoadIcon does not require a subsequent DestroyIcon in Win32
	m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);
	
	m_lpScene		= new CScene;
	m_lpthePolygon	= new Vert3[4];
	m_lpthePolygon1 = new Vert3[4];
	m_lpthePolygon2 = new Vert3[4];
	m_lpthePolygon3 = new Vert3[4];
	m_nPolyVertices = 4; //每个多边形四个顶点
	m_angx = m_angy = 0; //初始角度为0
}

void CMy2DCubeDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CMy2DCubeDlg)
	DDX_Control(pDX, IDC_SLIDER2, m_y_rot);
	DDX_Control(pDX, IDC_SLIDER1, m_x_rot);
	//}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CMy2DCubeDlg, CDialog)
//{{AFX_MSG_MAP(CMy2DCubeDlg)
ON_WM_PAINT()
ON_WM_QUERYDRAGICON()
ON_WM_CLOSE()
ON_WM_HSCROLL()
//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CMy2DCubeDlg message handlers

BOOL CMy2DCubeDlg::OnInitDialog()
{
	CDialog::OnInitDialog();
	
	// Set the icon for this dialog.  The framework does this automatically
	//  when the application's main window is not a dialog
	SetIcon(m_hIcon, TRUE);			// Set big icon
	SetIcon(m_hIcon, FALSE);		// Set small icon
	
	// TODO: Add extra initialization here
	Vert3 * Polycur ;
	Polycur= m_lpthePolygon;
	Vert3 polyvertarray[4] ={ 
		{10.0f,10.0f,0.0f,1.0f},
		{10.0f,-10.0f,0.0f,1.0f},
		{-10.0f,-10.0f,0.0f,1.0f},
		{-10.0f,10.0f,0.0f,1.0f},
	};
	//用数据填充多边形顶点缓冲
	int i;
	for (i = 0;i < m_nPolyVertices; i++)
	{
		
		Polycur->x = polyvertarray[i].x;
		Polycur->y = polyvertarray[i].y;
		Polycur->z = polyvertarray[i].z;
		Polycur->w = polyvertarray[i].w;
		Polycur ++;
	}
	
	Vert3 polyvertarray1[4] ={ 
		{10.0f,10.0f,-20.0f,1.0f},
		{10.0f,-10.0f,-20.0f,1.0f},
		{-10.0f,-10.0f,-20.0f,1.0f},
		{-10.0f,10.0f,-20.0f,1.0f},
	};
	Polycur = m_lpthePolygon1;
	for (i = 0;i < m_nPolyVertices; i++)
	{
		
		Polycur->x = polyvertarray1[i].x;
		Polycur->y = polyvertarray1[i].y;
		Polycur->z = polyvertarray1[i].z;
		Polycur->w = polyvertarray1[i].w;
		Polycur ++;
	}
	Vert3 polyvertarray2[4] ={ 
		{10.0f,10.0f,-20.0f,1.0f},
		{10.0f,-10.0f,-20.0f,1.0f},
		{10.0f,-10.0f,0.0f,1.0f},
		{10.0f,10.0f,0.0f,1.0f},
	};
	Polycur = m_lpthePolygon2;
	for (i = 0;i < m_nPolyVertices; i++)
	{
		
		Polycur->x = polyvertarray2[i].x;
		Polycur->y = polyvertarray2[i].y;
		Polycur->z = polyvertarray2[i].z;
		Polycur->w = polyvertarray2[i].w;
		Polycur ++;
	}
	Vert3 polyvertarray3[4] ={ {-10.0f,10.0f,-20.0f,1.0f},
	{-10.0f,-10.0f,-20.0f,1.0f},
	{-10.0f,-10.0f,0.0f,1.0f},
	{-10.0f,10.0f,0.0f,1.0f},
	};
	Polycur = m_lpthePolygon3;
	for (i = 0;i < m_nPolyVertices; i++)
	{
		
		Polycur->x = polyvertarray3[i].x;
		Polycur->y = polyvertarray3[i].y;
		Polycur->z = polyvertarray3[i].z;
		Polycur->w = polyvertarray3[i].w;
		Polycur ++;
	}
	
	m_x_rot.SetRange( 0, 359 ); //设置滑块控件的范围
	m_y_rot.SetRange( 0, 359 );
	
	Vert3 lookat = {0.0f,0.0f,0.0f,1.0f};	//摄像机观察目标点位置
	Vert3 Eye = {0.0f,0.0f,-50.0f,1.0f};	//摄像机位置
	Vert3 up = {-1.0f,0.0f,0.0f,1.0f};		//摄像机上方向
	
	Matrix matView,matProj;					//用来设置视矩阵和投影矩阵
	
	m_lpScene->SetViewLookAt(&matView,&lookat,&Eye,&up); //设置matView
	
	m_lpScene->SetProjection(&matProj,-30.0f,10.0f,90.0f); //设置matProj
	
	m_lpScene->SetMatrix(MAT_VIEW,&matView);	//用matView设置视矩阵
	m_lpScene->SetMatrix(MAT_PROJ,&matProj);	//用matProj设置投影矩阵
	
	
	
	
	return TRUE;  // return TRUE  unless you set the focus to a control
}

// If you add a minimize button to your dialog, you will need the code below
//  to draw the icon.  For MFC applications using the document/view model,
//  this is automatically done for you by the framework.

void CMy2DCubeDlg::OnPaint() 
{
	if (IsIconic())
	{
		CPaintDC dc(this); // device context for painting
		
		SendMessage(WM_ICONERASEBKGND, (WPARAM) dc.GetSafeHdc(), 0);
		
		// Center icon in client rectangle
		int cxIcon = GetSystemMetrics(SM_CXICON);
		int cyIcon = GetSystemMetrics(SM_CYICON);
		CRect rect;
		GetClientRect(&rect);
		int x = (rect.Width() - cxIcon + 1) / 2;
		int y = (rect.Height() - cyIcon + 1) / 2;
		
		// Draw the icon
		dc.DrawIcon(x, y, m_hIcon);
	}
	else
	{
		HDC hdc = ::GetDC(m_hWnd); //获得设备环境
		Matrix matWorld,matrot; //用于世界变换的矩阵
		
		m_lpScene->IdentifyMatrix(&matWorld); //矩阵单位化
		m_lpScene->IdentifyMatrix(&matrot);
		m_lpScene->MatRotation(&matWorld,(float)m_angx*3.1415f/180.0f,AXIS_X); //绕x轴旋转
		m_lpScene->MatRotation(&matrot,(float)m_angy*3.1415f/180.0f,AXIS_Y); //绕y轴旋转
		m_lpScene->MultMatrix(&matWorld,&matWorld,&matrot); //将旋转变换复合
		
		
		m_lpScene->SetMatrix(MAT_WORLD,&matWorld); //设置世界变换矩阵
		
		RECT rect; //清除用来绘图的矩形区域
		GetClientRect(&rect);
		rect.right		-= 100;
		rect.top		+= 16;
		rect.left		+= 16;
		rect.bottom		-= 16;
		
		::FillRect(hdc,&rect,NULL);
		
		m_lpScene->DrawPrimtive(hdc,4,m_lpthePolygon); //使用当前变换绘制图元
		m_lpScene->DrawPrimtive(hdc,4,m_lpthePolygon1);
		m_lpScene->DrawPrimtive(hdc,4,m_lpthePolygon2);
		m_lpScene->DrawPrimtive(hdc,4,m_lpthePolygon3);
		
		::ReleaseDC(m_hWnd,hdc); //释放设备环境
		CDialog::OnPaint();
	}
}

// The system calls this to obtain the cursor to display while the user drags
//  the minimized window.
HCURSOR CMy2DCubeDlg::OnQueryDragIcon()
{
	return (HCURSOR) m_hIcon;
}

void CMy2DCubeDlg::OnClose() 
{
	// TODO: Add your message handler code here and/or call default
	SAFE_RELEASE(m_lpScene);
	SAFE_RELEASE(m_lpthePolygon);
	SAFE_RELEASE(m_lpthePolygon1);
	SAFE_RELEASE(m_lpthePolygon2);
	SAFE_RELEASE(m_lpthePolygon3);
	
	CDialog::OnClose();
}


void CMy2DCubeDlg::OnHScroll(UINT nSBCode, UINT nPos, CScrollBar* pScrollBar) 
{
	// TODO: Add your message handler code here and/or call default
	if(m_angx != m_x_rot.GetPos())
	{
		m_angx = m_x_rot.GetPos();
		SendMessage(WM_PAINT);
	}
	if(m_angy != m_y_rot.GetPos())
	{
		m_angy = m_y_rot.GetPos();
	}
	SendMessage(WM_PAINT);
	
	CDialog::OnHScroll(nSBCode, nPos, pScrollBar);
}