Method UpdateValue

trinity/Eve/UI/EveProjectBracket.cpp:67–239

void EveProjectBracket::UpdateValue( double time )
{
	Vector3 pos;
	if( m_trackBall )
	{
		m_trackBall->GetValueAt( &pos, BeOS->GetCurrentFrameTime() );

		pos *= m_ballTrackingScaling;
	}
	else if( m_trackTransform )
	{
		pos = m_trackTransform->GetWorldPosition();
	}
	else
	{
		pos = m_trackPosition;
	}

	pos = TransformCoord( pos, Tr2Renderer::GetViewTransform() );

	bool isInFront = ( pos.z <= 0.0f );
	m_isInFront = isInFront;

	m_cameraDistance = Length( pos );

	Vector3 projectedPosition;
	const TriViewport& vp = Tr2Renderer::GetViewport();

	projectedPosition = TransformCoord( pos, Tr2Renderer::GetProjectionTransform() );
	Vec3TransformByViewport( projectedPosition, vp );

	float x = projectedPosition.x;
	float y = projectedPosition.y;

	m_rawProjectedPosition.x = x;
	m_rawProjectedPosition.y = y;

	// Brackets behind the camera with the 'dock' flag cleared are hidden
	if( ( !isInFront && !m_dock ) )
	{
		SetBracketDisplayState( false );
		return;
	}

	// Brackets outside the display range are hidden
	if( ( m_cameraDistance < m_minDispRange ) || ( m_cameraDistance > m_maxDispRange ) )
	{
		SetBracketDisplayState( false );
		return;
	}

	// Turn brackets on again, if needed
	SetBracketDisplayState( true );

	float left = vp.x + m_marginLeft;
	float right = vp.x + vp.width - m_marginRight;
	float top = vp.y + m_marginTop;
	float bottom = vp.y + vp.height - m_marginBottom;