gcc.rar_gcc

// // Massey University Screen Saver // Compile this using the makefile and copy massey.scr to your windows directory // #include <stdio.h> #include <windows.h> #include <GL/glut.h> #include <math.h> #include <stdlib.h> #include <scrnsave.h> struct colorIndexState { GLfloat amb[3]; /* ambient color / bottom of ramp */ GLfloat diff[3]; /* diffuse color / middle of ramp */ GLfloat spec[3]; /* specular color / top of ramp */ GLfloat ratio; /* ratio of diffuse to specular in ramp */ GLint indexes[3]; /* where ramp was placed in palette */ }; #define NUM_COLORS (sizeof(colors) / sizeof(colors[0])) struct colorIndexState colors[] = { { { 94.0F/255, 94.0F/255, 94.0F/255 }, { 1.0F, 1.0F, 1.0F }, { 1.0F, 1.0F, 1.0F }, 0.75F,{ 0, 0, 0 }, } , { { 0.0F, 49.0/255, 94.0/255 }, {16.0/255, 143.0/255, 255.0/255}, { 225/255.0F, 241/255.0F, 1.0F }, 0.75F, { 0, 0, 0 }, } , }; /* Windows globals, defines, and prototypes */ HGLRC hRC = (HGLRC) 0; HDC hDC = (HDC) 0; HDC hdc1; HPALETTE hPalette = (HPALETTE) 0; int nWndSize = 300; // 5 vars(x,y,twist,lat,long) 3 derivs (fx,f'x,f''x) 3 values (val,max,min) #define NVARS 5 #define NDERIV 4 int vars[NVARS][NDERIV][3]= { { {0,0,0}, {400,600, -600}, {-1,100,-100}, {0,0,0} } , { {0,0,0}, {200,600,-600}, {2,100,-100}, {0,0,0} } , { {36000,720000,-720000}, {100,500,-500}, {10,12,-12}, {1,1,-1} } , { {36000,720000,-720000}, {500,400,-400}, {8,10,-10}, {1,1,-1} } , { {36000,720000,-720000}, {500,600,-600}, {6,10,-10}, {1,1,-1} } , }; UINT nTimerID = 101; #define PI 3.1415926 #define REFSPEED 50 // screen refresh speed (ms) void setupPixelFormat(HDC); //GLfloat twist; GLdouble radius; GLvoid resize(GLsizei, GLsizei); GLvoid initializeGL(GLsizei, GLsizei); GLvoid drawScene(GLvoid); void polarView( GLdouble, GLdouble, GLdouble, GLdouble); void setupPalette(HDC hDC) { PIXELFORMATDESCRIPTOR pfd; LOGPALETTE* pPal; PALETTEENTRY *pe; int rampBase,pixelFormat,paletteSize,numRamps,rampSize,extra,diffSize,specSize; int i, r; pixelFormat=GetPixelFormat(hDC); DescribePixelFormat(hDC, pixelFormat, sizeof(PIXELFORMATDESCRIPTOR), &pfd); if (pfd.dwFlags & PFD_NEED_PALETTE || pfd.iPixelType == PFD_TYPE_COLORINDEX) { paletteSize = 1 << pfd.cColorBits; if (paletteSize > 4096 || paletteSize==1) { paletteSize = 4096; } } else { return; } pPal = (LOGPALETTE*) malloc(sizeof(LOGPALETTE) + paletteSize * sizeof(PALETTEENTRY)); pPal->palVersion = 0x300; pPal->palNumEntries = paletteSize; GetSystemPaletteEntries(hDC, 0, paletteSize, &pPal->palPalEntry[0]); numRamps = NUM_COLORS; rampSize = (paletteSize - 20) / numRamps; extra = (paletteSize - 20) - (numRamps * rampSize); for (r=0; r<numRamps; ++r) { rampBase = r * rampSize + 10; pe = &pPal->palPalEntry[rampBase]; diffSize = (int) (rampSize * colors[r].ratio); specSize = rampSize - diffSize; for (i=0; i<rampSize; ++i) { GLfloat *c0, *c1; GLint a; if (i < diffSize) { c0 = colors[r].amb; c1 = colors[r].diff; a = (i * 255) / (diffSize - 1); } else { c0 = colors[r].diff; c1 = colors[r].spec; a = ((i - diffSize) * 255) / (specSize - 1); } pe[i].peRed = (BYTE) (a * (c1[0] - c0[0]) + 255 * c0[0]); pe[i].peGreen = (BYTE) (a * (c1[1] - c0[1]) + 255 * c0[1]); pe[i].peBlue = (BYTE) (a * (c1[2] - c0[2]) + 255 * c0[2]); pe[i].peFlags = PC_NOCOLLAPSE; } colors[r].indexes[0] = rampBase; colors[r].indexes[1] = rampBase + (diffSize-1); colors[r].indexes[2] = rampBase + (rampSize-1); } for (i=0; i<extra; ++i) { int index = numRamps*rampSize+10+i; PALETTEENTRY *pe = &pPal->palPalEntry[index]; pe->peRed = (BYTE) 0; pe->peGreen = (BYTE) 0; pe->peBlue = (BYTE) 0; pe->peFlags = PC_NOCOLLAPSE; } hPalette = CreatePalette(pPal); free(pPal); if (hPalette) { SelectPalette(hDC, hPalette, FALSE); RealizePalette(hDC); } } static void initLights( void ) { // initializes light and material properties GLfloat light_ambient[] = {1.0, 1.0, 1.0, 1.0}; GLfloat light_diffuse[] = {1.0, 1.0, 1.0, 1.0}; GLfloat light_specular[] = {1.0, 1.0, 1.0, 1.0}; GLfloat light_position[] = {.7, .7, 1.25, 1.0}; GLfloat mat_shininess[] = {30.0}; glEnable(GL_LIGHTING); // enables lighting glEnable(GL_LIGHT0); // enables light source 0 glLightModelfv(GL_LIGHT_MODEL_TWO_SIDE,(float[]){GL_FALSE}); glLightfv(GL_LIGHT0, GL_AMBIENT,light_ambient); glLightfv(GL_LIGHT0, GL_DIFFUSE,light_diffuse); glLightfv(GL_LIGHT0, GL_SPECULAR,light_specular); glLightfv(GL_LIGHT0, GL_POSITION, light_position); glMaterialfv(GL_FRONT_AND_BACK, GL_SHININESS, mat_shininess); } LONG WINAPI ScreenSaverChildProc (HWND hWnd,UINT uMsg,WPARAM wParam,LPARAM lParam) { LONG lRet = 1; PAINTSTRUCT ps; RECT rect; switch (uMsg) { case WM_CREATE: hDC = GetDC(hWnd); setupPixelFormat(hDC); setupPalette(hDC); hRC = wglCreateContext(hDC); wglMakeCurrent(hDC, hRC); GetClientRect(hWnd, &rect); initializeGL(rect.right, rect.bottom); break; case WM_PAINT: BeginPaint(hWnd, &ps); drawScene(); SwapBuffers(hDC); EndPaint(hWnd, &ps); break; case WM_SIZE: resize(LOWORD(lParam), HIWORD(lParam)); break; case WM_PALETTECHANGED: if (hRC && hPalette && (HWND) wParam != hWnd) { UnrealizeObject(hPalette); SelectPalette(hDC, hPalette, FALSE); RealizePalette(hDC); return 0; } break; case WM_QUERYNEWPALETTE: if (hRC && hPalette) { UnrealizeObject(hPalette); SelectPalette(hDC, hPalette, FALSE); RealizePalette(hDC); return TRUE; } break; case WM_DESTROY: wglMakeCurrent(hDC, NULL); wglDeleteContext(hRC); ReleaseDC(hWnd,hDC); PostQuitMessage(0); break; case WM_ERASEBKGND: return 1; break; case WM_SYSCOMMAND: case WM_SETCURSOR: case WM_NCACTIVATE: case WM_ACTIVATE: case WM_ACTIVATEAPP: case WM_MOUSEMOVE: case WM_LBUTTONDOWN: case WM_MBUTTONDOWN: case WM_RBUTTONDOWN: case WM_KEYDOWN: case WM_SYSKEYDOWN: lRet = DefScreenSaverProc(hWnd, uMsg, wParam, lParam); DefScreenSaverProc(hMainWindow, uMsg, wParam, lParam); return lRet; default: lRet = DefWindowProc (hWnd, uMsg, wParam, lParam); break; } return lRet; } LRESULT WINAPI ScreenSaverProc(HWND hWnd,UINT message, WPARAM wParam, LPARAM lParam) { static HWND hChild = NULL; HINSTANCE hInst = hMainInstance; WNDCLASS wc; int i,j,k; switch (message) { case WM_CREATE: wc.style = CS_VREDRAW | CS_HREDRAW | CS_OWNDC ; wc.lpfnWndProc = (WNDPROC) ScreenSaverChildProc; wc.cbClsExtra = 0; wc.cbWndExtra = 0; wc.hInstance = hInst; wc.hIcon = NULL; wc.hCursor = NULL; wc.hbrBackground = NULL; wc.lpszMenuName = NULL; wc.lpszClassName = "NTDEVCLASS"; RegisterClass(&wc); if(vars[0][0][1]==0) { RECT rect; GetClientRect(hWnd,&rect); h