Graphics

AM_MEDIA_TYPE *pmt = NULL;
	IAMStreamConfig *pConfig = NULL;
		hr = pBuilder->FindInterface(&PIN_CATEGORY_CAPTURE, &MEDIATYPE_Video, VideoSourceFilter, IID_IAMStreamConfig,  (void**)&pConfig);

	int iCount, iSize;
	BYTE *pSCC = NULL;
	hr = pConfig->GetNumberOfCapabilities(&iCount, &iSize);
	pSCC = new BYTE[iSize];
	if (pSCC == NULL)
	{
		// TODO: Out of memory error.
	}
	hr = pConfig->GetStreamCaps(typ, &pmt, pSCC);//typ is the variable to hold the index of the Video Standards
	if (hr == S_OK)
	{
		hr = pConfig->SetFormat(pmt);
		
		if (FAILED(hr))
		{
			// TODO: Error handling.
		}
		DeleteMediaType(pmt);
	}
	delete [] pSCC;

void CCamera::ZoomCamera(float fMag)
{	
	m_vPosition = m_vPosition  + (m_vViewVector * fMag);	
}

void CCamera::RotateCameraX(float fArgument)
{	
        // first i hvae tried this

	//Vector3f vDistance = m_vTargetPos - m_vPosition;
	//// rotate camera X
	//m_mRotationMatrix.SetXRotationMatrix(fArgument);	
	//m_vViewVector = (m_mRotationMatrix * m_vViewVector).Normalize();	
	//m_vUpVector   = (m_mRotationMatrix * m_vUpVector).Normalize();

	//// set camera to origin
	//m_vPosition.SetAll(0.0f, 0.0f, 0.0f);

	//// compute direction vector from Null position to view vector
	//Vector3f vDirection = m_vViewVector - m_vPosition;
	//
	//// translate cameraposition in direction-vector direction
	//m_vPosition = m_vPosition + (vDirection * -vDistance.Magnitude());



        // Then I tried this, both with the same result
	// rotate camera position around origin,
	m_mRotationMatrix.SetXRotationMatrix(fArgument);
	m_vPosition = m_mRotationMatrix * m_vPosition;

	
}

void CCamera::SetCameraPosition()
{
        //compute new viewpoint
        // m_vTargetPos is the position of the origin (0,0,0)
	Vector3f vViewPoint = m_vTargetPos - m_vPosition;

	gluLookAt(m_vPosition.X(),m_vPosition.Y(),m_vPosition.Z(),
			  vViewPoint.X(),vViewPoint.Y(),vViewPoint.Z(),
			  m_vUpVector.X(),m_vUpVector.Y(),m_vUpVector.Z()
			 );
}

QueryPerformanceCounter(&currentTime);<br />
fps = (float)nFrames/((float)(currentTime.QuadPart-startTime.QuadPart)/(float)timerFrequency.QuadPart);<br />
float period = (float)(currentTime.QuadPart-startTime.QuadPart)/(float)timerFrequency.QuadPart/(float)nFrames;<br />
str_fps.Format("[ %0.2f FPS, %0.4f sec/frame ]", fps, period);<br />
QueryPerformanceCounter(&startTime);