Method UpdateVisibility

trinity/Eve/UI/EveTacticalOverlay.cpp:218–327

}

void EveTacticalOverlay::UpdateVisibility( const EveUpdateContext& updateContext, const Matrix& parentTransform )
{
	m_connectorBuffer.clear();
	m_anchorBuffer.clear();
	m_velocityBuffer.clear();

	Vector3 up( 0, 1, 0 );
	float distanceThreshold = ( m_ranges.x + m_ranges.y ) * m_ranges.z;
	float requestedSegments = 0.f;
	auto& frustum = updateContext.GetFrustum();

	for( auto it = m_trackObjects.begin(); it != m_trackObjects.end(); it++ )
	{
		Vector3 position = ( *it )->GetPosition();
		float radius = ( *it )->GetRadius();
		Vector3 direction = position - m_rootPosition;
		float distance = Length( direction );
		if( distance > distanceThreshold )
		{
			continue;
		}

		direction.y = 0;
		direction = Normalize( direction );
		if( !( direction.x || direction.z ) )
		{
			direction.x = 0.01;
		}
		Vector3 positionPlane = m_rootPosition + direction * distance;
		Vector4 bs;
		BoundingSphereFromPoints( bs, position, positionPlane );
		if( !frustum.IsSphereVisible( &bs ) )
		{
			continue;
		}

		float pixelDiameter = frustum.GetPixelSizeAccross( &bs );
		float segments = GetSubdivisionCount( pixelDiameter, m_connectorSegmentsLow, m_connectorSegmentsMedium, m_connectorSegmentsHigh, updateContext );
		if( segments != 0 )
		{
			Vector2 planarDiff( positionPlane.x - position.x, positionPlane.z - position.z );
			float length = Length( planarDiff );
			float height = std::abs( position.y - positionPlane.y );
			// Wide arches need more segments to look good
			segments *= 1.f + m_arcSegmentMultiplier * length / height;
			requestedSegments += segments * m_segmentCountMultiplier;
			if( m_requestedSegmentsLast && m_requestedSegmentsLast > m_targetSegmentCount )
			{
				segments *= m_targetSegmentCount / m_requestedSegmentsLast;
				segments = max( segments, 1.f );
			}
			segments = m_segmentCountMultiplier * floor( segments + 0.5f );
		}
		float counter = radius > m_minRadiusForRange ? segments + 1 : segments;
		float interestReducedIntensity = 0.0;
		if( m_interestRange > 0.0001f && ( distance - radius - m_ranges.w ) > m_interestRange )
		{
			interestReducedIntensity = 1 - m_outsideInterestIntensity;