OpenGL.zip_hud_opengl

/* * This Code Was Created By Jeff Molofee 2000 * Modified by Shawn T. to handle (%3.2f, num) parameters. * A HUGE Thanks To Fredric Echols For Cleaning Up * And Optimizing The Base Code, Making It More Flexible! * If You've Found This Code Useful, Please Let Me Know. * Visit My Site At nehe.gamedev.net */ #include <windows.h> // Header File For Windows #include <math.h> // Header File For Windows Math Library #include <stdio.h> // Header File For Standard Input/Output #include <stdarg.h> // Header File For Variable Argument Routines #include <gl\gl.h> // Header File For The OpenGL32 Library #include <gl\glu.h> // Header File For The GLu32 Library #include <gl\glaux.h> // Header File For The Glaux Library HDC hDC=NULL; // Private GDI Device Context HGLRC hRC=NULL; // Permanent Rendering Context HWND hWnd=NULL; // Holds Our Window Handle HINSTANCE hInstance; // Holds The Instance Of The Application int j=1; int i; const GLfloat Pi = 3.1415926536f; const int n = 100000; GLuint base; // Base Display List For The Font Set GLfloat cnt1; // 1st Counter Used To Move Text & For Coloring GLfloat cnt2; // 2nd Counter Used To Move Text & For Coloring bool keys[256]; // Array Used For The Keyboard Routine bool active=TRUE; // Window Active Flag Set To TRUE By Default bool fullscreen=TRUE; // Fullscreen Flag Set To Fullscreen Mode By Default LRESULT CALLBACK WndProc(HWND, UINT, WPARAM, LPARAM); // Declaration For WndProc GLvoid BuildFont(GLvoid) // Build Our Bitmap Font { HFONT font; // Windows Font ID HFONT oldfont; // Used For Good House Keeping base = glGenLists(96); // Storage For 96 Characters font = CreateFont( -24, // Height Of Font 0, // Width Of Font 0, // Angle Of Escapement 0, // Orientation Angle FW_BOLD, // Font Weight FALSE, // Italic FALSE, // Underline FALSE, // Strikeout ANSI_CHARSET, // Character Set Identifier OUT_TT_PRECIS, // Output Precision CLIP_DEFAULT_PRECIS, // Clipping Precision ANTIALIASED_QUALITY, // Output Quality FF_DONTCARE|DEFAULT_PITCH, // Family And Pitch "Courier New"); // Font Name oldfont = (HFONT)SelectObject(hDC, font); // Selects The Font We Want wglUseFontBitmaps(hDC, 32, 96, base); // Builds 96 Characters Starting At Character 32 SelectObject(hDC, oldfont); // Selects The Font We Want DeleteObject(font); // Delete The Font } GLvoid KillFont(GLvoid) // Delete The Font List { glDeleteLists(base, 96); // Delete All 96 Characters } GLvoid glPrint(const char *fmt, ...) // Custom GL "Print" Routine { char text[256]; // Holds Our String va_list ap; // Pointer To List Of Arguments if (fmt == NULL) // If There's No Text return; // Do Nothing va_start(ap, fmt); // Parses The String For Variables vsprintf(text, fmt, ap); // And Converts Symbols To Actual Numbers va_end(ap); // Results Are Stored In Text glPushAttrib(GL_LIST_BIT); // Pushes The Display List Bits glListBase(base - 32); // Sets The Base Character to 32 glCallLists(strlen(text), GL_UNSIGNED_BYTE, text); // Draws The Display List Text glPopAttrib(); // Pops The Display List Bits } GLvoid ReSizeGLScene(GLsizei width, GLsizei height) // Resize And Initialize The GL Window { if (height==0) // Prevent A Divide By Zero By { height=1; // Making Height Equal One } glViewport(0,0,width,height); // Reset The Current Viewport glMatrixMode(GL_PROJECTION); // Select The Projection Matrix glLoadIdentity(); // Reset The Projection Matrix // Calculate The Aspect Ratio Of The Window gluPerspective(45.0f,(GLfloat)width/(GLfloat)height,0.1f,100.0f); glMatrixMode(GL_MODELVIEW); // Select The Modelview Matrix glLoadIdentity(); // Reset The Modelview Matrix } int InitGL(GLvoid) // All Setup For OpenGL Goes Here { 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 BuildFont(); // Build The Font return TRUE; // Initialization Went OK } int DrawGLScene(GLvoid) // Here's Where We Do All The Drawing { glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); // Clear Screen And Depth Buffer glBegin(GL_LINES); glColor3f(0.0f, 1.0f, 0.0f); glVertex2f(-3.00f, 3.00f); glVertex2f(-3.00f, 2.25f); glVertex2f(-3.00f, 3.00f); glVertex2f(-2.25f, 3.00f); glVertex2f(3.00f, 3.00f); glVertex2f(2.25f, 3.00f); glVertex2f(3.00f, 3.00f); glVertex2f(3.00f, 2.25f); glVertex2f(3.00f, -3.00f); glVertex2f(3.00f, -2.25f); glVertex2f(3.00f, -3.00f); glVertex2f(2.25f, -3.00f); glVertex2f(-3.00f, -3.00f); glVertex2f(-2.25f, -3.00f); glVertex2f(-3.00f, -3.00f); glVertex2f(-3.00f, -2.25f); glVertex2f(-0.75f, 0.0f); glVertex2f(0.75f, 0.0f); glVertex2f(0.0f, 0.75f); glVertex2f(0.0f, -0.75f); glEnd(); glBegin(GL_LINE_LOOP); for(i=0; i<n; ++i) glVertex2f(0.45*cos(2*Pi/n*i), 0.45*sin(2*Pi/n*i)); glEnd(); glLoadIdentity(); // Reset The Current Modelview Matrix glTranslatef(0.0f,0.0f,-10.0f); // Move One Unit Into The Screen glColor3f(0.0f,1.0f,0.0f); glRasterPos2f(-3.15f,0.0f); glPrint("%d", j,j++); //左 glColor3f(0.0f,1.0f,0.0f); glRasterPos2f(3.00f,0.0f);//右 glPrint("%d", j,j++); glColor3f(0.0f,1.0f,0.0f); glRasterPos2f(-0.2f,3.00f); glPrint("%d", j,j++); //上 // cnt1+=0.051f; // Increase The First Counter // cnt2+=0.005f; // Increase The First Counter return TRUE; // Everything Went OK } GLvoid KillGLWindow(GLvoid) // Properly Kill The Window { if (fullscreen) // Are We In Fullscreen Mode? { ChangeDisplaySettings(NULL,0); // If So Switch Back To The Desktop ShowCursor(TRUE); // Show Mouse Pointer } if (hRC) // Do We Have A Rendering Context? { if (!wglMakeCurrent(NULL,NULL)) // Are We Able To Release The DC And RC Contexts? { MessageBox(NULL,"Release Of DC And RC Failed.","SHUTDOWN ERROR",MB_OK | MB_ICONINFORMATION); } if (!wglDeleteContext(hRC)) // Are We Able To Delete The RC? { MessageBox(NULL,"Release Rendering Context Failed.","SHUTDOWN ERROR",MB_OK | MB_ICONINFORMATION); } hRC=NULL; // Set RC To NULL } if (hDC && !ReleaseDC(hWnd,hDC)) // Are We Able To Release The DC { MessageBox(NULL,"Release Device Context Failed.","SHUTDOWN ERROR",MB_OK | MB_ICONINFORMATION); hDC=NULL; // Set DC To NULL } if (hWnd && !DestroyWindow(hWnd)) // Are We Able To Destroy The Window? { MessageBox(NULL,"Could Not Release hWnd.","SHUTDOWN ERROR",MB_OK | MB_ICONINFORMATION); hWnd=NULL; // Set hWnd To NULL } if (!UnregisterClass("OpenGL",hInstance)) // Are We Able To Unregister Class { MessageBox(NULL,"Could Not Unregister Class.","SHUTDOWN ERROR",MB_OK | MB_ICONINFORMATION); hInstance=NULL; // Set hInstance To NULL } KillFont(); } /* This Code Creates Our OpenGL Window. Parameters Are: * * title - Title To Appear At The Top Of The Window * * width - Width Of The GL Window Or Fullscreen Mode * * height - Height Of The GL Window Or Fullscreen Mode * * bits - Number Of Bits To Use For Color (8/16/24/32) * * fullscreenflag - Use Fullscreen Mode (TRUE) Or Windowed Mod