Method UpdateVisibility

trinity/Eve/EveTransform.cpp:281–347

}

void EveTransform::UpdateVisibility( const EveUpdateContext& updateContext, const Matrix& parentTransform )
{
	m_lodLevel = TR2_LOD_LOW;
	m_isVisible = false;

	if( m_hideOnLowQuality && Tr2Renderer::IsLowQuality() )
	{
		return;
	}

	if( !m_display )
	{
		return;
	}

	UpdateViewDependentData( updateContext.GetFrustum(), parentTransform );

	if( m_mesh )
	{
		Vector4 boundingSphere;
		if( GetBoundingSphere( boundingSphere ) )
		{
			// check visibility with camera or, if threshold set to negative, no culling
			if( updateContext.GetFrustum().IsSphereVisible( &boundingSphere ) || ( m_visibilityThreshold < 0.f ) )
			{
				float estimatedSize = updateContext.GetFrustum().GetPixelSizeAccross( &boundingSphere );

				m_mesh->UseWithScreenSize( estimatedSize, boundingSphere.w );

				if( estimatedSize >= updateContext.GetMediumDetailThreshold() )
				{
					m_lodLevel = TR2_LOD_HIGH;
				}
				else if( estimatedSize >= updateContext.GetLowDetailThreshold() )
				{
					m_lodLevel = TR2_LOD_MEDIUM;
				}

				if( estimatedSize > m_visibilityThreshold )
				{
					m_isVisible = true;
				}
			}
		}
	}
	else
	{
		m_isVisible = true;
	}

	if( !m_particleSystems.empty() )
	{
		// Because bounding info is currently unreliable for particle systems
		// we use LOD high.
		// This is hopefully a temporary measure. <6. september, 2012, Logi>
		m_lodLevel = TR2_LOD_HIGH;
	}