www.pudn.com > opengldemo1.zip > DialogGLDlg.cpp
// DialogGLDlg.cpp : implementation file
//
#include "stdafx.h"
#include "DialogGL.h"
#include "DialogGLDlg.h"
#include "math.h"
#include "mmsystem.h"
#include "resource.h"
#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif
/////////////////////////////////////////////////////////////////////////////
// CAboutDlg dialog used for App About
class CAboutDlg : public CDialog
{
public:
CAboutDlg();
// Dialog Data
//{{AFX_DATA(CAboutDlg)
enum { IDD = IDD_ABOUTBOX };
//}}AFX_DATA
// ClassWizard generated virtual function overrides
//{{AFX_VIRTUAL(CAboutDlg)
protected:
virtual void DoDataExchange(CDataExchange* pDX); // DDX/DDV support
//}}AFX_VIRTUAL
// Implementation
protected:
//{{AFX_MSG(CAboutDlg)
//}}AFX_MSG
DECLARE_MESSAGE_MAP()
};
CAboutDlg::CAboutDlg() : CDialog(CAboutDlg::IDD)
{
//{{AFX_DATA_INIT(CAboutDlg)
//}}AFX_DATA_INIT
}
void CAboutDlg::DoDataExchange(CDataExchange* pDX)
{
CDialog::DoDataExchange(pDX);
//{{AFX_DATA_MAP(CAboutDlg)
//}}AFX_DATA_MAP
}
BEGIN_MESSAGE_MAP(CAboutDlg, CDialog)
//{{AFX_MSG_MAP(CAboutDlg)
// No message handlers
//}}AFX_MSG_MAP
END_MESSAGE_MAP()
/////////////////////////////////////////////////////////////////////////////
// CDialogGLDlg dialog
CDialogGLDlg::CDialogGLDlg(CWnd* pParent /*=NULL*/)
: CDialog(CDialogGLDlg::IDD, pParent)
{
//{{AFX_DATA_INIT(CDialogGLDlg)
// 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_hGLContext = NULL;
m_GLPixelIndex = 0;
m_xRotate = 0;
m_yRotate = 0;
m_Rotate = FALSE;
m_ScaleX = 1.0f;
m_ScaleY = 1.0f;
m_ScaleZ = 1.0f;
m_RightButtonDown = FALSE;
m_LeftButtonDown = FALSE;
}
void CDialogGLDlg::DoDataExchange(CDataExchange* pDX)
{
CDialog::DoDataExchange(pDX);
//{{AFX_DATA_MAP(CDialogGLDlg)
// NOTE: the ClassWizard will add DDX and DDV calls here
//}}AFX_DATA_MAP
}
BEGIN_MESSAGE_MAP(CDialogGLDlg, CDialog)
ON_WM_CONTEXTMENU()
//{{AFX_MSG_MAP(CDialogGLDlg)
ON_WM_SYSCOMMAND()
ON_WM_PAINT()
ON_WM_QUERYDRAGICON()
ON_WM_CREATE()
ON_WM_DESTROY()
ON_WM_SIZE()
ON_WM_LBUTTONDOWN()
ON_WM_LBUTTONUP()
ON_WM_MOUSEMOVE()
ON_WM_TIMER()
ON_COMMAND(ID_POPUP_ROTATE, OnPopupRotate)
ON_COMMAND(ID_POPUP_SIZE_DECREASE, OnPopupSizeDecrease)
ON_COMMAND(ID_POPUP_SIZE_INCREASE, OnPopupSizeIncrease)
ON_WM_KEYDOWN()
//}}AFX_MSG_MAP
END_MESSAGE_MAP()
/////////////////////////////////////////////////////////////////////////////
// CDialogGLDlg message handlers
BOOL CDialogGLDlg::OnInitDialog()
{
CDialog::OnInitDialog();
// Add "About..." menu item to system menu.
// IDM_ABOUTBOX must be in the system command range.
ASSERT((IDM_ABOUTBOX & 0xFFF0) == IDM_ABOUTBOX);
ASSERT(IDM_ABOUTBOX < 0xF000);
CMenu* pSysMenu = GetSystemMenu(FALSE);
if (pSysMenu != NULL)
{
CString strAboutMenu;
strAboutMenu.LoadString(IDS_ABOUTBOX);
if (!strAboutMenu.IsEmpty())
{
pSysMenu->AppendMenu(MF_SEPARATOR);
pSysMenu->AppendMenu(MF_STRING, IDM_ABOUTBOX, strAboutMenu);
}
}
// 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
return TRUE; // return TRUE unless you set the focus to a control
}
void CDialogGLDlg::OnSysCommand(UINT nID, LPARAM lParam)
{
if ((nID & 0xFFF0) == IDM_ABOUTBOX)
{
CAboutDlg dlgAbout;
dlgAbout.DoModal();
}
else
{
CDialog::OnSysCommand(nID, lParam);
}
}
// 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 CDialogGLDlg::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
{
CPaintDC dc(this); // device context for painting
RenderScene();
SwapBuffers(dc.m_ps.hdc);
CDialog::OnPaint();
}
}
// The system calls this to obtain the cursor to display while the user drags
// the minimized window.
HCURSOR CDialogGLDlg::OnQueryDragIcon()
{
return (HCURSOR) m_hIcon;
}
BOOL CDialogGLDlg::SetWindowPixelFormat(HDC hDC)
{
PIXELFORMATDESCRIPTOR pixelDesc;
pixelDesc.nSize = sizeof(PIXELFORMATDESCRIPTOR);
pixelDesc.nVersion = 1;
pixelDesc.dwFlags = PFD_DRAW_TO_WINDOW |
PFD_SUPPORT_OPENGL |
PFD_DOUBLEBUFFER |
PFD_STEREO_DONTCARE;
pixelDesc.iPixelType = PFD_TYPE_RGBA;
pixelDesc.cColorBits = 32;
pixelDesc.cRedBits = 8;
pixelDesc.cRedShift = 16;
pixelDesc.cGreenBits = 8;
pixelDesc.cGreenShift = 8;
pixelDesc.cBlueBits = 8;
pixelDesc.cBlueShift = 0;
pixelDesc.cAlphaBits = 0;
pixelDesc.cAlphaShift = 0;
pixelDesc.cAccumBits = 64;
pixelDesc.cAccumRedBits = 16;
pixelDesc.cAccumGreenBits = 16;
pixelDesc.cAccumBlueBits = 16;
pixelDesc.cAccumAlphaBits = 0;
pixelDesc.cDepthBits = 32;
pixelDesc.cStencilBits = 8;
pixelDesc.cAuxBuffers = 0;
pixelDesc.iLayerType = PFD_MAIN_PLANE;
pixelDesc.bReserved = 0;
pixelDesc.dwLayerMask = 0;
pixelDesc.dwVisibleMask = 0;
pixelDesc.dwDamageMask = 0;
m_GLPixelIndex = ChoosePixelFormat(hDC,&pixelDesc);
if(m_GLPixelIndex==0) // Choose default
{
m_GLPixelIndex = 1;
if(!DescribePixelFormat(hDC,m_GLPixelIndex,sizeof(PIXELFORMATDESCRIPTOR),&pixelDesc))
return FALSE;
}
if(!SetPixelFormat(hDC,m_GLPixelIndex,&pixelDesc))
return FALSE;
return TRUE;
}
BOOL CDialogGLDlg::CreateViewGLContext(HDC hDC)
{
m_hGLContext = wglCreateContext(hDC);
if(m_hGLContext==NULL)
return FALSE;
if(wglMakeCurrent(hDC,m_hGLContext)==FALSE)
return FALSE;
return TRUE;
}
int CDialogGLDlg::OnCreate(LPCREATESTRUCT lpCreateStruct)
{
if (CDialog::OnCreate(lpCreateStruct) == -1)
return -1;
HWND hWnd = GetSafeHwnd();
HDC hDC = ::GetDC(hWnd);
if(SetWindowPixelFormat(hDC)==FALSE)
return 0;
if(CreateViewGLContext(hDC)==FALSE)
return 0;
// BackColor
COLORREF color = ::GetSysColor(COLOR_3DFACE);
glClearColor((float)GetRValue(color)/255.0f,(float)GetGValue(color)/255.0f,(float)GetBValue(color)/255.0f,1.0);
glPolygonMode(GL_FRONT,GL_FILL);
glPolygonMode(GL_BACK,GL_FILL);
glShadeModel(GL_SMOOTH);
BuildList();
SetTimer(0,10,NULL);
return 0;
}
void CDialogGLDlg::OnDestroy()
{
CDialog::OnDestroy();
if(wglGetCurrentContext() != NULL)
wglMakeCurrent(NULL,NULL);
if(m_hGLContext != NULL)
{
wglDeleteContext(m_hGLContext);
m_hGLContext = NULL;
}
}
void CDialogGLDlg::OnSize(UINT nType, int cx, int cy)
{
CDialog::OnSize(nType, cx, cy);
GLsizei width,height;
GLdouble aspect;
width = cx;
height = cy;
if(cy==0)
aspect = (GLdouble)width;
else
aspect = (GLdouble)width/(GLdouble)height;
glViewport(0,0,width,height);
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
gluPerspective(45,aspect,1,10.0);
glMatrixMode(GL_MODELVIEW);
glLoadIdentity();
glDrawBuffer(GL_BACK);
// Lights, material properties
GLfloat ambientProperties[] = {0.7f, 0.7f, 0.7f, 1.0f};
GLfloat diffuseProperties[] = {0.8f, 0.8f, 0.8f, 1.0f};
GLfloat specularProperties[] = {1.0f, 1.0f, 1.0f, 1.0f};
glLightfv( GL_LIGHT0, GL_AMBIENT, ambientProperties);
glLightfv( GL_LIGHT0, GL_DIFFUSE, diffuseProperties);
glLightfv( GL_LIGHT0, GL_SPECULAR, specularProperties);
glLightModelf(GL_LIGHT_MODEL_TWO_SIDE, 1.0);
glPolygonMode(GL_FRONT_AND_BACK,GL_FILL);
// Default : lighting
glEnable(GL_LIGHT0);
glEnable(GL_LIGHTING);
glMaterialfv(GL_FRONT_AND_BACK,GL_DIFFUSE,diffuseProperties);
glEnable(GL_DEPTH_TEST);
}
void CDialogGLDlg::RenderScene()
{
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glPushMatrix();
// Position / translation (mouse rotation)
glTranslated(0.0,0.0,-8.0);
glRotated(m_xRotate, 1.0, 0.0, 0.0);
glRotated(m_yRotate, 0.0, 1.0, 0.0);
glScalef(m_ScaleX,m_ScaleY,m_ScaleZ);
// Only one list, the box
::glCallList(1);
glPopMatrix();
}
void CDialogGLDlg::OnLButtonDown(UINT nFlags, CPoint point)
{
m_LeftButtonDown = TRUE;
m_LeftDownPos = point;
KillTimer(0);
CDialog::OnLButtonDown(nFlags, point);
}
void CDialogGLDlg::OnLButtonUp(UINT nFlags, CPoint point)
{
m_LeftButtonDown = FALSE;
CDialog::OnLButtonUp(nFlags, point);
}
void CDialogGLDlg::OnMouseMove(UINT nFlags, CPoint point)
{
if(m_LeftButtonDown)
{
CSize rotate = m_LeftDownPos - point;
m_LeftDownPos = point;
m_yRotate -= rotate.cx;
m_xRotate -= rotate.cy;
InvalidateRect(NULL,FALSE);
}
CDialog::OnMouseMove(nFlags, point);
}
void CDialogGLDlg::OnContextMenu(CWnd*, CPoint point)
{
// CG: This block was added by the Pop-up Menu component
{
if (point.x == -1 && point.y == -1){
//keystroke invocation
CRect rect;
GetClientRect(rect);
ClientToScreen(rect);
point = rect.TopLeft();
point.Offset(5, 5);
}
CMenu menu;
VERIFY(menu.LoadMenu(CG_IDR_POPUP_DIALOG_GLDLG));
CMenu* pPopup = menu.GetSubMenu(0);
ASSERT(pPopup != NULL);
CWnd* pWndPopupOwner = this;
while (pWndPopupOwner->GetStyle() & WS_CHILD)
pWndPopupOwner = pWndPopupOwner->GetParent();
pPopup->TrackPopupMenu(TPM_LEFTALIGN | TPM_RIGHTBUTTON, point.x, point.y,
pWndPopupOwner);
}
}
void CDialogGLDlg::Rotate()
{
m_yRotate -= 2;
InvalidateRect(NULL,FALSE);
}
void CDialogGLDlg::OnTimer(UINT nIDEvent)
{
m_yRotate -= 3;
m_xRotate -= 2;
InvalidateRect(NULL,FALSE);
CDialog::OnTimer(nIDEvent);
}
void CDialogGLDlg::OnPopupRotate()
{
SetTimer(0,10,NULL);
}
void CDialogGLDlg::OnPopupSizeDecrease()
{
m_ScaleX /= 1.1f;
m_ScaleY /= 1.1f;
m_ScaleZ /= 1.1f;
InvalidateRect(NULL,FALSE);
}
void CDialogGLDlg::OnPopupSizeIncrease()
{
m_ScaleX *= 1.1f;
m_ScaleY *= 1.1f;
m_ScaleZ *= 1.1f;
InvalidateRect(NULL,FALSE);
}
void CDialogGLDlg::BuildList()
{
::glNewList(1,GL_COMPILE_AND_EXECUTE);
glColor3f(1.0f,1.0f,1.0f);
float x = 1.5f;
glBegin(GL_POLYGON);
glNormal3d(0.0,0.0,-1.0);
glVertex3d( x, x, x);
glVertex3d( x, -x, x);
glVertex3d(-x, -x, x);
glVertex3d(-x, x, x);
glEnd();
glBegin(GL_POLYGON);
glNormal3d(0.0,0.0,1.0);
glVertex3d(-x, x, -x);
glVertex3d(-x, -x, -x);
glVertex3d( x, -x, -x);
glVertex3d( x, x, -x);
glEnd();
glBegin(GL_POLYGON);
glNormal3d(-1.0,0.0,0.0);
glVertex3d( x, x, x);
glVertex3d( x, x, -x);
glVertex3d( x, -x, -x);
glVertex3d( x, -x, x);
glEnd();
glBegin(GL_POLYGON);
glNormal3d(-1.0,0.0,0.0);
glVertex3d(-x, x, x);
glVertex3d(-x, x, -x);
glVertex3d(-x, -x, -x);
glVertex3d(-x, -x, x);
glEnd();
glBegin(GL_POLYGON);
glNormal3d(0.0,1.0,0.0);
glVertex3d(-x, -x, x);
glVertex3d( x, -x, x);
glVertex3d( x, -x, -x);
glVertex3d(-x, -x, -x);
glEnd();
glBegin(GL_POLYGON);
glNormal3d(0.0,1.0,0.0);
glVertex3d(-x, x, x);
glVertex3d( x, x, x);
glVertex3d( x, x, -x);
glVertex3d(-x, x, -x);
glEnd();
::glEndList();
}
void CDialogGLDlg::OnKeyDown(UINT nChar,
UINT nRepCnt,
UINT nFlags)
{
switch(nChar)
{
case VK_ADD:
m_ScaleX *= 1.1f;
m_ScaleY *= 1.1f;
m_ScaleZ *= 1.1f;
InvalidateRect(NULL,FALSE);
break;
case VK_SUBTRACT:
m_ScaleX /= 1.1f;
m_ScaleY /= 1.1f;
m_ScaleZ /= 1.1f;
InvalidateRect(NULL,FALSE);
break;
default :
{}
}
CDialog::OnKeyDown(nChar, nRepCnt, nFlags);
}