さて、C ++でopenglを使用して、シーンで昼/夜のサイクルを作ろうとしています。私はglutTimerFuncを試しました。タイム スライスを 10000 ミリ秒 = 10 秒に制限しましたが、非常に高速な反転効果が得られました。
これが私がやったことです。
void turn (int value){
if(night)
{
glDisable(GL_LIGHT0);
glEnable(GL_LIGHT1);
night=!night;
}
else
{
glDisable(GL_LIGHT1);
glEnable(GL_LIGHT0);
night=!night;
}
//glutPostRedisplay();
glutTimerFunc(10000,&turn,2);
}
関数では、DrawGLSceneその関数を呼び出しました。WinMain 関数は次のとおりです。
int WINAPI WinMain( HINSTANCE hInstance, // Instance
HINSTANCE hPrevInstance, // Previous Instance
LPSTR lpCmdLine, // Command Line Parameters
int nCmdShow) // Window Show State
{
MSG msg; // Windows Message Structure
BOOL done=FALSE; // Bool Variable To Exit Loop
// Ask The User Which Screen Mode They Prefer
//if (MessageBox(NULL,"Would You Like To Run In Fullscreen Mode?", "Start FullScreen?",MB_YESNO|MB_ICONQUESTION)==IDNO)
//{
fullscreen=FALSE; // Windowed Mode
//}
// Create Our OpenGL Window
if (!CreateGLWindow("day night",700,500,16,fullscreen))
{
return 0; // Quit If Window Was Not Created
}
glutTimerFunc(10000,&turn,2);
//turn(1);
while(!done) // Loop That Runs While done=FALSE
{
if (PeekMessage(&msg,NULL,0,0,PM_REMOVE)) // Is There A Message Waiting?
{
if (msg.message==WM_QUIT) // Have We Received A Quit Message?
{
done=TRUE; // If So done=TRUE
}
else // If Not, Deal With Window Messages
{
TranslateMessage(&msg); // Translate The Message
DispatchMessage(&msg); // Dispatch The Message
}
}
else // If There Are No Messages
{
// Draw The Scene. Watch For ESC Key And Quit Messages From DrawGLScene()
if (active) // Program Active?
{
if (keys[VK_ESCAPE]) // Was ESC Pressed?
{
done=TRUE; // ESC Signalled A Quit
}
else // Not Time To Quit, Update Screen
{
DrawGLScene(); // Draw The Scene
SwapBuffers(hDC); // Swap Buffers (Double Buffering)
}
}
if (keys[VK_F1]) // Is F1 Being Pressed?
{
keys[VK_F1]=FALSE; // If So Make Key FALSE
KillGLWindow(); // Kill Our Current Window
fullscreen=!fullscreen; // Toggle Fullscreen / Windowed Mode
// Recreate Our OpenGL Window
if (!CreateGLWindow("day night",700,500,16,fullscreen))
{
return 0; // Quit If Window Was Not Created
}
}
}
}
// Shutdown
KillGLWindow(); // Kill The Window
return (msg.wParam); // Exit The Program
}