www.pudn.com > renliandesanweichongjian.rar > OpenGL.cpp
// OpenGL.cpp : implementation file // #include "stdafx.h" #include "Face.h" #include "OpenGL.h" #include#include #ifdef _DEBUG #define new DEBUG_NEW #undef THIS_FILE static char THIS_FILE[] = __FILE__; #endif extern CFaceApp theApp; ///////////////////////////////////////////////////////////////////////////// // COpenGL COpenGL::COpenGL():m_bInit(FALSE),m_bFullScreen(FALSE), m_hDC(NULL),m_hRC(NULL),m_parent(NULL) { } COpenGL::~COpenGL() { KillGLWindow(); // Shutdown } BEGIN_MESSAGE_MAP(COpenGL, CWnd) //{{AFX_MSG_MAP(COpenGL) ON_WM_CREATE() ON_WM_PAINT() ON_WM_SIZE() ON_WM_KEYDOWN() //}}AFX_MSG_MAP END_MESSAGE_MAP() ///////////////////////////////////////////////////////////////////////////// // COpenGL message handlers void COpenGL::Create(CRect rect, CWnd *parent) { if (m_bInit) return; ASSERT(rect); ASSERT(parent); m_rect = rect; m_parent = parent; CString className = AfxRegisterWndClass( CS_HREDRAW | CS_VREDRAW | CS_OWNDC, NULL, (HBRUSH)GetStockObject(BLACK_BRUSH), NULL); CreateEx( 0, className, "OpenGL", WS_CHILD | WS_VISIBLE | WS_CLIPSIBLINGS | WS_CLIPCHILDREN, rect, parent, 0); } int COpenGL::OnCreate(LPCREATESTRUCT lpCreateStruct) { if (CWnd::OnCreate(lpCreateStruct) == -1) return -1; // TODO: Add your specialized creation code here EnumDisplaySettings(NULL, ENUM_CURRENT_SETTINGS, &m_DMsaved); GLuint PixelFormat; // Holds The Results After Searching For A Match static PIXELFORMATDESCRIPTOR pfd= // pfd Tells Windows How We Want Things To Be { sizeof(PIXELFORMATDESCRIPTOR), // Size Of This Pixel Format Descriptor 1, // Version Number PFD_DRAW_TO_WINDOW | // Format Must Support Window PFD_SUPPORT_OPENGL | // Format Must Support OpenGL PFD_DOUBLEBUFFER, // Must Support Double Buffering PFD_TYPE_RGBA, // Request An RGBA Format m_DMsaved.dmBitsPerPel, // Select Our Color Depth 0, 0, 0, 0, 0, 0, // Color Bits Ignored 0, // No Alpha Buffer 0, // Shift Bit Ignored 0, // No Accumulation Buffer 0, 0, 0, 0, // Accumulation Bits Ignored 16, // 16Bit Z-Buffer (Depth Buffer) 0, // No Stencil Buffer 0, // No Auxiliary Buffer PFD_MAIN_PLANE, // Main Drawing Layer 0, // Reserved 0, 0, 0 // Layer Masks Ignored }; if ( !( m_hDC = ::GetDC ( m_hWnd ) ) ) { // Did We Get A Device Context? KillGLWindow (); // Reset The Display TRACE ( "Can't Create A GL Device Context." ); return FALSE; } if ( !( PixelFormat = ChoosePixelFormat ( m_hDC, &pfd ) ) ) { // Did Windows Find A Matching Pixel Format? KillGLWindow (); // Reset The Display TRACE ( "Can't Find A Suitable PixelFormat." ); return FALSE; } if ( !SetPixelFormat ( m_hDC, PixelFormat, &pfd ) ){ // Are We Able To Set The Pixel Format? KillGLWindow (); // Reset The Display TRACE ( "Can't Set The PixelFormat." ); return FALSE; } if ( !( m_hRC = wglCreateContext ( m_hDC ) ) ) { // Are We Able To Get A Rendering Context? KillGLWindow (); // Reset The Display TRACE( " Can't Create A GL Rendering Context." ); return FALSE; } if ( !wglMakeCurrent ( m_hDC, m_hRC ) ) { // Try To Activate The Rendering Context KillGLWindow (); // Reset The Display TRACE ( "Can't Activate The GL Rendering Context." ); return FALSE; } if ( !InitGL () ) { // Initialize Our Newly Created GL Window KillGLWindow (); // Reset The Display TRACE ( "Initialization Failed." ); return FALSE; } m_bInit = TRUE; return 0; } void COpenGL::KillGLWindow() { if (m_bFullScreen) // Are We In Fullscreen Mode? { if (!ChangeDisplaySettings(NULL,CDS_TEST)) { // if the shortcut doesn't work ChangeDisplaySettings(NULL,CDS_RESET); // Do it anyway (to get the values out of the registry) ChangeDisplaySettings(&m_DMsaved,CDS_RESET); // change it to the saved settings } else { ChangeDisplaySettings(NULL,CDS_RESET); } ShowCursor(TRUE); // Show Mouse Pointer } if ( m_hRC ) { // Do We Have A Rendering Context? if ( !wglMakeCurrent ( NULL, NULL ) ) { // Are We Able To Release The DC And RC Contexts? TRACE ( "Release Of DC And RC Failed." ); } if ( !wglDeleteContext ( m_hRC ) ) { // Are We Able To Delete The RC? TRACE ( "Release Rendering Context Failed." ); } m_hRC = NULL; // Set RC To NULL } if ( m_hDC && !::ReleaseDC ( m_hWnd, m_hDC ) ) { // Are We Able To Release The DC TRACE ( "Release Device Context Failed." ); m_hDC = NULL; // Set DC To NULL } if ( m_hWnd && !::DestroyWindow ( m_hWnd ) ) { // Are We Able To Destroy The Window? TRACE( "Could Not Release m_hWnd." ); m_hWnd = NULL; // Set m_hWnd To NULL } } int COpenGL::InitGL() { glShadeModel(GL_SMOOTH); // Enable Smooth Shading glClearColor(0.0f, 0.0f, 0.0f, 0.5f); // Black Background glClearDepth(1.0f); // Depth Buffer Setup glEnable(GL_DEPTH_TEST); // Enables Depth Testing glDepthFunc(GL_LEQUAL); // The Type Of Depth Testing To Do glHint(GL_PERSPECTIVE_CORRECTION_HINT, GL_NICEST); // Really Nice Perspective Calculations glEnable(GL_TEXTURE_2D); // Enable Texture Mapping float x, y, z; int loop; FILE *filein; char oneline[255]; //ÖØÖ÷¾¶ lkliang 051104 CString strpath; strpath = theApp.strPathInit+"//"; strpath += "data/candide.txt"; filein = fopen(strpath, "rt"); // File To Load World Data From readstr(filein,oneline); sscanf(oneline, "VERTEXLIST %d\n", &numtriangles); for (loop = 0; loop < numtriangles; loop++) { readstr(filein,oneline); sscanf(oneline, "%f %f %f", &x, &y, &z); vertex[loop][0]=x; vertex[loop][1]=y; vertex[loop][2]=z; } readstr(filein,oneline); sscanf(oneline, "FACELIST %d\n", &numface); for (loop = 0; loop < numface; loop++) { readstr(filein,oneline); sscanf(oneline, "%f %f %f", &x, &y, &z); face[loop][0]=x; face[loop][1]=y; face[loop][2]=z; } fclose(filein); return TRUE; // Initialization Went OK } void COpenGL::RenderGLScene() { if(!m_bInit) return; glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); // Clear Screen And Depth Buffer glLoadIdentity(); // EXAMPLE OPENGL CODE START //////////////////////////////////////////////////////// ////////////////////////////////////////////////////////////////////////////// static GLfloat xrot; // X Rotation static GLfloat yrot; // Y Rotation static GLfloat zrot; // Z Rotation glPushMatrix(); // Push Matrix Onto Stack (Copy The Current Matrix) glLoadIdentity(); // Reset The Current Modelview Matrix glTranslatef(0.0f,0.0f,-6.0f); // Move Left 1.5 Units And Into The Screen 6.0 glRotatef(xrot,1.0f,0.0f,0.0f); glRotatef(yrot,0.0f,1.0f,0.0f); glRotatef(zrot,0.0f,0.0f,1.0f); /* glBegin(GL_QUADS); // Front Face glColor3f(1.0f,0.0f,0.0f);glVertex3f(-1.0f, -1.0f, 1.0f); glColor3f(0.0f,1.0f,0.0f);glVertex3f( 1.0f, -1.0f, 1.0f); glColor3f(0.0f,1.0f,0.0f);glVertex3f( 1.0f, 1.0f, 1.0f); glColor3f(0.0f,0.0f,1.0f);glVertex3f(-1.0f, 1.0f, 1.0f); // Back Face glColor3f(1.0f,0.0f,0.0f);glVertex3f(-1.0f, -1.0f, -1.0f); glColor3f(0.0f,1.0f,0.0f);glVertex3f(-1.0f, 1.0f, -1.0f); glColor3f(0.0f,1.0f,0.0f);glVertex3f( 1.0f, 1.0f, -1.0f); glColor3f(0.0f,0.0f,1.0f);glVertex3f( 1.0f, -1.0f, -1.0f); // Top Face glColor3f(0.0f,1.0f,0.0f);glVertex3f(-1.0f, 1.0f, -1.0f); glColor3f(0.0f,0.0f,1.0f);glVertex3f(-1.0f, 1.0f, 1.0f); glColor3f(0.0f,1.0f,0.0f);glVertex3f( 1.0f, 1.0f, 1.0f); glColor3f(0.0f,1.0f,0.0f);glVertex3f( 1.0f, 1.0f, -1.0f); // Bottom Face glColor3f(1.0f,0.0f,0.0f);glVertex3f(-1.0f, -1.0f, -1.0f); glColor3f(0.0f,0.0f,1.0f);glVertex3f( 1.0f, -1.0f, -1.0f); glColor3f(0.0f,1.0f,0.0f);glVertex3f( 1.0f, -1.0f, 1.0f); glColor3f(1.0f,0.0f,0.0f);glVertex3f(-1.0f, -1.0f, 1.0f); // Right face glColor3f(0.0f,0.0f,1.0f);glVertex3f( 1.0f, -1.0f, -1.0f); glColor3f(0.0f,1.0f,0.0f);glVertex3f( 1.0f, 1.0f, -1.0f); glColor3f(0.0f,1.0f,0.0f);glVertex3f( 1.0f, 1.0f, 1.0f); glColor3f(0.0f,1.0f,0.0f);glVertex3f( 1.0f, -1.0f, 1.0f); // Left Face glColor3f(1.0f,0.0f,0.0f);glVertex3f(-1.0f, -1.0f, -1.0f); glColor3f(1.0f,0.0f,0.0f);glVertex3f(-1.0f, -1.0f, 1.0f); glColor3f(0.0f,0.0f,1.0f);glVertex3f(-1.0f, 1.0f, 1.0f); glColor3f(0.0f,1.0f,0.0f);glVertex3f(-1.0f, 1.0f, -1.0f); glEnd();*/ for (int loop=0; loop < numface; loop++) { glBegin(GL_TRIANGLES); // Drawing Using Triangles glVertex3f(vertex[face[loop][0]][0],vertex[face[loop][0]][1],vertex[face[loop][0]][2]); // Top glVertex3f(vertex[face[loop][1]][0],vertex[face[loop][1]][1],vertex[face[loop][1]][2]); // Bottom Left glVertex3f(vertex[face[loop][2]][0],vertex[face[loop][2]][1],vertex[face[loop][2]][2]); // Bottom Right glEnd(); } glPopMatrix(); // Pop Matrix Off The Stack xrot+=1.3f; yrot+=1.2f; zrot+=1.4f; // Decrease The Rotation Variable For The Quad ////////////////////////////////////////////////////////////////////////////// // EXAMPLE OPENGL CODE END ////////////////////////////////////////////////////////// // Swap our scene to the front SwapBuffers(m_hDC); Invalidate(FALSE); } void COpenGL::OnPaint() { CPaintDC dc(this); // device context for painting // TODO: Add your message handler code here ::ValidateRect ( m_hWnd, NULL ); // Do not call CWnd::OnPaint() for painting messages } void COpenGL::OnSize(UINT nType, int cx, int cy) { CWnd::OnSize(nType, cx, cy); // TODO: Add your message handler code here if ( cy==0) { // Prevent A Divide By Zero By cy=1; // Making Height Equal One } glViewport(0,0,cx,cy); // Reset The Current Viewport glMatrixMode(GL_PROJECTION); // Select The Projection Matrix glLoadIdentity(); // Reset The Projection Matrix gluPerspective(45.0f,(GLfloat)cx/(GLfloat)cy,0.1f,100.0f); // Calculate The Aspect Ratio Of The Window glMatrixMode(GL_MODELVIEW); // Select The Modelview Matrix glLoadIdentity(); // Reset The Modelview Matrix } BOOL COpenGL::SetFullScreen(int width, int height, int depth) { if(!m_bInit) return FALSE; if (m_bFullScreen) return TRUE; DEVMODE dmScreenSettings; // Device Mode memset(&dmScreenSettings,0,sizeof(dmScreenSettings)); // Makes Sure Memory's Cleared dmScreenSettings.dmSize=sizeof(dmScreenSettings); // Size Of The Devmode Structure dmScreenSettings.dmPelsWidth = width; // Selected Screen Width dmScreenSettings.dmPelsHeight = height; // Selected Screen Height dmScreenSettings.dmBitsPerPel = depth; // Selected Bits Per Pixel dmScreenSettings.dmFields=DM_BITSPERPEL|DM_PELSWIDTH|DM_PELSHEIGHT; // Try To Set Selected Mode And Get Results. NOTE: CDS_FULLSCREEN Gets Rid Of Start Bar. if (ChangeDisplaySettings(&dmScreenSettings,CDS_FULLSCREEN)!=DISP_CHANGE_SUCCESSFUL) { return m_bFullScreen = FALSE; } SetParent(NULL); SetWindowPos(&CWnd::wndTop, 0, 0, GetSystemMetrics(SM_CXSCREEN), GetSystemMetrics(SM_CYSCREEN), SWP_SHOWWINDOW); ShowCursor(FALSE); SetFocus(); return m_bFullScreen = TRUE; } BOOL COpenGL::SetNormScreen() { if(!m_bInit) return FALSE; if (m_bFullScreen) // Are We In Fullscreen Mode? { if (!ChangeDisplaySettings(NULL,CDS_TEST)) { // if the shortcut doesn't work ChangeDisplaySettings(NULL,CDS_RESET); // Do it anyway (to get the values out of the registry) ChangeDisplaySettings(&m_DMsaved,CDS_RESET); // change it to the saved settings } else { ChangeDisplaySettings(NULL,CDS_RESET); } SetParent(m_parent); SetWindowPos(&CWnd::wndTop, m_rect.left, m_rect.top, m_rect.Width(), m_rect.Height(), SWP_SHOWWINDOW); ShowCursor(TRUE); // Show Mouse Pointer m_bFullScreen = FALSE; } return TRUE; } void COpenGL::readstr(FILE *f,char *string) { do { fgets(string, 255, f); } while ((string[0] == '/') || (string[0] == '\n')); return; }