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C-/C++-Quelltext

void CBaseCamera::UpdateMouseDelta() 
{ 
POINT ptCurMouseDelta; 
POINT ptCurMousePos; 
// Get current position of mouse 
GetCursorPos( &ptCurMousePos ); 
// Calc how far it's moved since last frame 
ptCurMouseDelta.x = ptCurMousePos.x - m_ptLastMousePosition.x; 
ptCurMouseDelta.y = ptCurMousePos.y - m_ptLastMousePosition.y; 
// Record current position for next time 
m_ptLastMousePosition = ptCurMousePos; 
if( m_bResetCursorAfterMove && DXUTIsActive() ) 
{ 
// Set position of camera to center of desktop, 
// so it always has room to move. This is very useful 
// if the cursor is hidden. If this isn't done and cursor is hidden, 
// then invisible cursor will hit the edge of the screen 
// and the user can't tell what happened 
POINT ptCenter; 
// Get the center of the current monitor 
MONITORINFO mi; 
mi.cbSize = sizeof( MONITORINFO ); 
DXUTGetMonitorInfo( DXUTMonitorFromWindow( DXUTGetHWND(), MONITOR_DEFAULTTONEAREST ), &mi ); 
ptCenter.x = ( mi.rcMonitor.left + mi.rcMonitor.right ) / 2; 
ptCenter.y = ( mi.rcMonitor.top + mi.rcMonitor.bottom ) / 2; 
SetCursorPos( ptCenter.x, ptCenter.y ); 
m_ptLastMousePosition = ptCenter; 
} 
// Smooth the relative mouse data over a few frames so it isn't 
// jerky when moving slowly at low frame rates. 
float fPercentOfNew = 1.0f / m_fFramesToSmoothMouseData; 
float fPercentOfOld = 1.0f - fPercentOfNew; 
m_vMouseDelta.x = m_vMouseDelta.x * fPercentOfOld + ptCurMouseDelta.x * fPercentOfNew; 
m_vMouseDelta.y = m_vMouseDelta.y * fPercentOfOld + ptCurMouseDelta.y * fPercentOfNew; 
m_vRotVelocity = m_vMouseDelta * m_fRotationScaler; 
}

C-/C++-Quelltext

// Smooth the relative mouse data over a few frames so it isn't 
// jerky when moving slowly at low frame rates. 
float fPercentOfNew = 1.0f / m_fFramesToSmoothMouseData; 
float fPercentOfOld = 1.0f - fPercentOfNew; 
m_vMouseDelta.x = m_vMouseDelta.x * fPercentOfOld + ptCurMouseDelta.x * fPercentOfNew; 
m_vMouseDelta.y = m_vMouseDelta.y * fPercentOfOld + ptCurMouseDelta.y * fPercentOfNew; 
m_vRotVelocity = m_vMouseDelta * m_fRotationScaler;

C-/C++-Quelltext

m_vMouseDelta.x = m_vMouseDelta.x * fPercentOfOld + ptCurMouseDelta.x * fPercentOfNew; 
m_vMouseDelta.y = m_vMouseDelta.y * fPercentOfOld + ptCurMouseDelta.y * fPercentOfNew; 

m_vMouseDelta.x /= 10; 
m_vMouseDelta.y /= 10; 

m_vRotVelocity = m_vMouseDelta * m_fRotationScaler;