--- /dev/null
+/*
+ * Copyright 2003 J Brown
+ * Copyright 2006 Andrey Korotaev <unC0Rr@inbox.ru>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
+ */
+
+#include <windows.h>
+#include <GL/gl.h>
+#include <GL/glu.h>
+#include <tchar.h>
+#include <scrnsave.h>
+#include "resource.h"
+
+#define APPNAME _T("Cylfrac")
+#define wfactor 0.9
+#define rotfactor 1.5
+#define FPS 100
+#define timerdelay 1000/FPS
+
+POINT initpoint;
+HDC dc;
+HGLRC hrc;
+DWORD oldticks;
+MMRESULT TimerID;
+
+DWORD lvls = 7;
+int cylquality = 8;
+
+HINSTANCE hInstance;
+
+GLUquadricObj * cylinder;
+
+float angle = 0;
+float colorh = 0.0;
+float rval, gval, bval;
+
+BOOL fullscreen = FALSE;
+
+float _RGB(float H, float M1, float M2)
+{
+ if(H < 0.0) H += 360.0;
+ else if(H > 360.0) H -= 360.0;
+ if(H < 60) return M1 + (M2 - M1) * H / 60.0;
+ if((H >= 60 )&&(H < 180)) return M2;
+ if((H >= 180)&&(H < 240)) return M1 + (M2 - M1)*(240 - H) / 60.0;
+ return M1;
+}
+
+void HLStoRGB(float H, float L, float S,
+ float* R, float* G, float* B)
+{
+ float M1, M2;
+ if(S <= 0.5) M2 = S * (1 + L);
+ else M2 = S * (1 - L) + L;
+ M1 = 2 * S - M2;
+ if (L == 0.0)
+ {
+ *R = S;
+ *G = S;
+ *B = S;
+ } else {
+ *R = _RGB(H + 120.0, M1, M2);
+ *G = _RGB(H , M1, M2);
+ *B = _RGB(H - 120.0, M1, M2);
+ }
+}
+
+void DrawCylinder(int n, float rota, float width)
+{
+ glPushMatrix();
+ glColor3f(rval/n, gval/n, bval/n);
+ glRotatef(rota, 0.0, 1.0, 0.0);
+ gluCylinder(cylinder, width, width * wfactor, n * 0.5, cylquality, 1);
+ glTranslatef(0.0, 0.0, -n * 0.5);
+ gluCylinder(cylinder, width * wfactor, width, n * 0.5, cylquality, 1);
+ if(n > 1)
+ {
+ float r = rota * rotfactor;
+ glRotatef(90.0, 1.0, 0.0, 0.0);
+ DrawCylinder(n - 1, r, width * wfactor);
+ glTranslatef(0.0, n, 0.0);
+ DrawCylinder(n - 1, -r, width * wfactor);
+ }
+ glPopMatrix();
+}
+
+void DrawScene(HWND hwnd, HDC dc, int ticks)
+{
+ PAINTSTRUCT ps;
+ dc = BeginPaint(hwnd, &ps);
+ glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
+ glRotatef(ticks * 0.01, 0.0, 1.0, -0.5);
+ angle += ticks * 0.01;
+ colorh += ticks * 0.003;
+ if (colorh > 360.0) colorh -= 360.0;
+ HLStoRGB(colorh, 1.0, 0.7, &rval, &gval, &bval);
+ DrawCylinder(lvls, angle, 0.2);
+ SwapBuffers(dc);
+ EndPaint(hwnd, &ps);
+}
+
+void CALLBACK TimeProc(UINT uID, UINT uMsg, DWORD dwUser, DWORD dw1, DWORD dw2)
+{
+ InvalidateRect((HWND)dwUser, NULL, 0);
+}
+
+void MyPixelFormat(HDC dc)
+{
+ int npf;
+ PIXELFORMATDESCRIPTOR pfd;
+
+ ZeroMemory(&pfd, sizeof(pfd));
+ pfd.nSize = sizeof(pfd);
+ pfd.nVersion = 1;
+ pfd.dwFlags = PFD_DOUBLEBUFFER | PFD_SUPPORT_OPENGL | PFD_DRAW_TO_WINDOW;
+
+ npf = ChoosePixelFormat(dc, &pfd);
+ if(npf != 0)
+ SetPixelFormat(dc, npf, &pfd);
+}
+
+void InitGL(HWND hwnd)
+{
+ GLfloat lightpos[4] = {2.0, 2.0, -2.0, 0.7};
+ GLfloat ca = 1.0;
+ dc = GetDC(hwnd);
+ MyPixelFormat(dc);
+ hrc = wglCreateContext(dc);
+ wglMakeCurrent(dc, hrc);
+ cylinder = gluNewQuadric();
+ glEnable(GL_DEPTH_TEST);
+ glEnable(GL_LIGHT0);
+ glLightfv(GL_LIGHT0, GL_POSITION, (GLfloat *)&lightpos);
+ glLightfv(GL_LIGHT0, GL_LINEAR_ATTENUATION, &ca);
+ glEnable(GL_LIGHTING);
+ glEnable(GL_COLOR_MATERIAL);
+}
+
+LRESULT WINAPI ScreenSaverProc(HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam)
+{
+ switch(msg) {
+ case WM_CREATE:
+ {
+ GetCursorPos(&initpoint);
+ InitGL(hwnd);
+ oldticks = GetTickCount();
+ TimerID = timeSetEvent (timerdelay, 0, TimeProc, (DWORD)hwnd, TIME_PERIODIC);
+ }
+ break;
+ case WM_PAINT:
+ {
+ DWORD ticks = oldticks;
+ POINT currpoint;
+ oldticks = GetTickCount();
+ DrawScene(hwnd, dc, oldticks - ticks);
+ if(fullscreen)
+ {
+ GetCursorPos(&currpoint);
+ if(abs(currpoint.x - initpoint.x) + (abs(currpoint.y - initpoint.y)) > 10)
+ PostMessage(hwnd, WM_CLOSE, 0, 0);
+ }
+ }
+ break;
+ case WM_DESTROY:
+ {
+ timeKillEvent(TimerID);
+ gluDeleteQuadric(cylinder);
+ wglMakeCurrent(0, 0);
+ wglDeleteContext(hrc);
+ ReleaseDC(hwnd, dc);
+ DeleteDC(dc);
+ if (fullscreen)
+ ShowCursor(TRUE);
+ PostQuitMessage(0);
+ }
+ break;
+ case WM_SIZE:
+ {
+ int width = LOWORD(lParam);
+ int height = HIWORD(lParam);
+ float fscale;
+ glViewport(0, 0, width, height);
+ glMatrixMode(GL_MODELVIEW);
+ glLoadIdentity();
+ fscale = 0.8/(float)lvls;
+ glScalef(fscale, fscale, fscale);
+ }
+ break;
+ default:
+ return DefScreenSaverProc(hwnd, msg, wParam, lParam);
+ }
+ return 0;
+}
+
+BOOL WINAPI ScreenSaverConfigureDialog(HWND hWnd, UINT message, WPARAM wparam, LPARAM lparam)
+{
+ return FALSE;
+}
+
+BOOL WINAPI RegisterDialogClasses(HANDLE hmodule)
+{
+ TCHAR szTitle[256];
+ TCHAR szText[256];
+
+ LoadString(hmodule,
+ IDS_TITLE,
+ szTitle,
+ 256);
+
+ LoadString(hmodule,
+ IDS_TEXT,
+ szText,
+ 256);
+
+ MessageBox(0,
+ szText,
+ szTitle,
+ MB_OK | MB_ICONWARNING);
+ return FALSE;
+}
projects / reactos.git / blobdiff