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https://github.com/reactos/reactos.git
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Simple OpenGL screensaver by Andrey Korotaev. This is a good app to test opengl regressions.
svn path=/trunk/; revision=22424
This commit is contained in:
Aleksey Bragin
parent
b8bbec3796
commit
99c69dbca9
3 changed files with 316 additions and 1 deletions
298
reactos/base/applications/screensavers/cylfrac/cylfrac.c
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298
reactos/base/applications/screensavers/cylfrac/cylfrac.c
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/*
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* Copyright 2003 J Brown
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* Copyright 2006 Andrey Korotaev <unC0Rr@inbox.ru>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
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*/
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#include <windows.h>
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#include <gl.h>
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#include <glu.h>
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#include <tchar.h>
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#define APPNAME _T("Cylfrac")
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#define wfactor 0.9
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#define rotfactor 1.5
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#define FPS 100
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#define timerdelay 1000/FPS
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POINT initpoint;
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HDC dc;
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HGLRC hrc;
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DWORD oldticks;
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MMRESULT TimerID;
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DWORD lvls = 7;
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int cylquality = 8;
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HINSTANCE hInstance;
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GLUquadricObj * cylinder;
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float angle = 0;
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float colorh = 0.0;
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float rval, gval, bval;
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BOOL fullscreen = FALSE;
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float _RGB(float H, float M1, float M2)
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{
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if(H < 0.0) H += 360.0;
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else if(H > 360.0) H -= 360.0;
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if(H < 60) return M1 + (M2 - M1) * H / 60.0;
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if((H >= 60 )&&(H < 180)) return M2;
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if((H >= 180)&&(H < 240)) return M1 + (M2 - M1)*(240 - H) / 60.0;
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return M1;
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}
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void HLStoRGB(float H, float L, float S,
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float* R, float* G, float* B)
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{
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float M1, M2;
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if(S <= 0.5) M2 = S * (1 + L);
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else M2 = S * (1 - L) + L;
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M1 = 2 * S - M2;
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if (L == 0.0)
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{
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*R = S;
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*G = S;
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*B = S;
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} else {
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*R = _RGB(H + 120.0, M1, M2);
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*G = _RGB(H , M1, M2);
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*B = _RGB(H - 120.0, M1, M2);
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}
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}
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void DrawCylinder(int n, float rota, float width)
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{
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glPushMatrix();
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glColor3f(rval/n, gval/n, bval/n);
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glRotatef(rota, 0.0, 1.0, 0.0);
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gluCylinder(cylinder, width, width * wfactor, n * 0.5, cylquality, 1);
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glTranslatef(0.0, 0.0, -n * 0.5);
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gluCylinder(cylinder, width * wfactor, width, n * 0.5, cylquality, 1);
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if(n > 1)
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{
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float r = rota * rotfactor;
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glRotatef(90.0, 1.0, 0.0, 0.0);
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DrawCylinder(n - 1, r, width * wfactor);
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glTranslatef(0.0, n, 0.0);
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DrawCylinder(n - 1, -r, width * wfactor);
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}
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glPopMatrix();
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}
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void DrawScene(HWND hwnd, HDC dc, int ticks)
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{
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PAINTSTRUCT ps;
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dc = BeginPaint(hwnd, &ps);
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glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
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glRotatef(ticks * 0.01, 0.0, 1.0, -0.5);
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angle += ticks * 0.01;
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colorh += ticks * 0.003;
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if (colorh > 360.0) colorh -= 360.0;
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HLStoRGB(colorh, 1.0, 0.7, &rval, &gval, &bval);
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DrawCylinder(lvls, angle, 0.2);
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SwapBuffers(dc);
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EndPaint(hwnd, &ps);
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}
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void CALLBACK TimeProc(UINT uID, UINT uMsg, DWORD dwUser, DWORD dw1, DWORD dw2)
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{
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InvalidateRect((HWND)dwUser, NULL, 0);
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}
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void MyPixelFormat(HDC dc)
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{
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int npf;
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PIXELFORMATDESCRIPTOR pfd;
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ZeroMemory(&pfd, sizeof(pfd));
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pfd.nSize = sizeof(pfd);
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pfd.nVersion = 1;
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pfd.dwFlags = PFD_DOUBLEBUFFER | PFD_SUPPORT_OPENGL | PFD_DRAW_TO_WINDOW;
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npf = ChoosePixelFormat(dc, &pfd);
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if(npf != 0)
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SetPixelFormat(dc, npf, &pfd);
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}
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void InitGL(HWND hwnd)
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{
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GLfloat lightpos[4] = {2.0, 2.0, -2.0, 0.7};
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GLfloat ca = 1.0;
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dc = GetDC(hwnd);
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MyPixelFormat(dc);
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hrc = wglCreateContext(dc);
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wglMakeCurrent(dc, hrc);
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cylinder = gluNewQuadric();
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glEnable(GL_DEPTH_TEST);
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glEnable(GL_LIGHT0);
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glLightfv(GL_LIGHT0, GL_POSITION, (GLfloat *)&lightpos);
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glLightfv(GL_LIGHT0, GL_LINEAR_ATTENUATION, &ca);
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glEnable(GL_LIGHTING);
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glEnable(GL_COLOR_MATERIAL);
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}
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LRESULT WINAPI WndProc(HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam)
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{
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switch(msg) {
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case WM_CREATE:
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GetCursorPos(&initpoint);
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InitGL(hwnd);
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oldticks = GetTickCount();
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TimerID = timeSetEvent (timerdelay, 0, TimeProc, (DWORD)hwnd, TIME_PERIODIC);
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break;
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case WM_PAINT:
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{
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DWORD ticks = oldticks;
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oldticks = GetTickCount();
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DrawScene(hwnd, dc, oldticks - ticks);
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POINT currpoint;
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if(fullscreen)
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{
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GetCursorPos(&currpoint);
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if(abs(currpoint.x - initpoint.x) + (abs(currpoint.y - initpoint.y)) > 10)
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PostMessage(hwnd, WM_CLOSE, 0, 0);
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}
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break;
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}
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case WM_DESTROY:
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timeKillEvent(TimerID);
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gluDeleteQuadric(cylinder);
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wglMakeCurrent(0, 0);
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wglDeleteContext(hrc);
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ReleaseDC(hwnd, dc);
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DeleteDC(dc);
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PostQuitMessage(0);
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break;
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case WM_NOTIFY:
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case WM_SYSKEYDOWN:
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PostMessage(hwnd, WM_CLOSE, 0, 0);
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break;
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case WM_SIZE:
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{
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int width = LOWORD(lParam);
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int height = HIWORD(lParam);
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glViewport(0, 0, width, height);
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glMatrixMode(GL_MODELVIEW);
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glLoadIdentity();
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float fscale = 0.8/(float)lvls;
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glScalef(fscale, fscale, fscale);
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break;
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}
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}
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return DefWindowProc(hwnd, msg, wParam, lParam);
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}
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void InitSaver(HWND hwndParent)
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{
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WNDCLASS wc;
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ZeroMemory(&wc, sizeof(wc));
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wc.style = CS_HREDRAW | CS_VREDRAW;
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wc.lpfnWndProc = WndProc;
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wc.lpszClassName = APPNAME;
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RegisterClass(&wc);
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if (hwndParent != 0)
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{
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RECT rect;
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GetClientRect(hwndParent, &rect);
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CreateWindow(APPNAME, APPNAME,
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WS_VISIBLE | WS_CHILD,
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0, 0,
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rect.right,
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rect.bottom,
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hwndParent, 0,
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hInstance, NULL);
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fullscreen = FALSE;
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} else {
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HWND hwnd;
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hwnd = CreateWindow(APPNAME, APPNAME,
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WS_VISIBLE | WS_POPUP | WS_EX_TOPMOST,
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0, 0,
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GetSystemMetrics(SM_CXSCREEN), GetSystemMetrics(SM_CYSCREEN),
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HWND_DESKTOP, 0,
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hInstance, NULL);
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ShowWindow(hwnd, SW_SHOWMAXIMIZED);
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ShowCursor(FALSE);
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fullscreen = TRUE;
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}
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}
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void ParseCommandLine(PSTR szCmdLine, int *chOption, HWND *hwndParent)
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{
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int ch = *szCmdLine++;
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if(ch == '-' || ch == '/')
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ch = *szCmdLine++;
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if(ch >= 'A' && ch <= 'Z')
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ch += 'a' - 'A';
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*chOption = ch;
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ch = *szCmdLine++;
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if(ch == ':')
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ch = *szCmdLine++;
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while(ch == ' ' || ch == '\t')
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ch = *szCmdLine++;
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if(isdigit(ch))
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{
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unsigned int i = atoi(szCmdLine - 1);
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*hwndParent = (HWND)i;
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}
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else
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*hwndParent = 0;
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}
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int WINAPI WinMain (HINSTANCE hInst,
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HINSTANCE hPrev,
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LPSTR lpCmdLine,
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int iCmdShow)
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{
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HWND hwndParent;
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int chOption;
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hInstance = hInst;
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ParseCommandLine(lpCmdLine, &chOption, &hwndParent);
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switch(chOption)
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{
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case 's': InitSaver(0); break;
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case 'p': InitSaver(hwndParent); break;
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case 'c':
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MessageBox(0,
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_T("Cylinders fractal by unC0Rr.\nSpecial for ReactOS.\n"),
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_T("About"),
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MB_OK | MB_ICONINFORMATION);
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return 0;
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default: InitSaver(0);
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}
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MSG Message;
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while (GetMessage(&Message, 0, 0, 0))
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DispatchMessage(&Message);
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return Message.wParam;
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}
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@ -0,0 +1,15 @@
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<module name="cylfrac" type="win32scr" installbase="system32" installname="cylfrac.scr">
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<define name="__USE_W32API" />
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<define name="__REACTOS__" />
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<define name="UNICODE" />
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<define name="_UNICODE" />
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<library>kernel32</library>
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<library>user32</library>
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<library>gdi32</library>
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<library>opengl32</library>
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<library>glu32</library>
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<library>winmm</library>
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<file>cylfrac.c</file>
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</module>
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@ -4,5 +4,7 @@
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<directory name="matrix">
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<xi:include href="matrix/matrix.rbuild" />
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</directory>
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<directory name="cylfrac">
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<xi:include href="cylfrac/cylfrac.rbuild" />
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</directory>
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</group>
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