internal void DoClipping(float camDistanceFromCenter, Vector3D localPosition, float farPlaneDistance, RequestCollector collector, bool frustumCulling, float rangeScale)
{
int lodIndex = m_lodIndex;
if (!ShouldBeThisLodVisible(camDistanceFromCenter))
{
MyUtils.Swap(ref m_storedCellData, ref m_clippedCells);
m_storedCellData.Clear();
return;
}
m_localPosition = localPosition;
MyClipmap.ComputeLodViewBounds(m_clipmap.m_scaleGroup, lodIndex, out m_nearDistance, out m_farDistance);
farPlaneDistance *= rangeScale;
m_farDistance *= rangeScale;
m_nearDistance *= rangeScale;
m_fitsInFrustum = (farPlaneDistance * 1.25f) > m_nearDistance;
if (!m_fitsInFrustum && m_lodIndex == lodIndex)
{
return;
}
//var localFrustum = new BoundingFrustumD(CameraFrustumGetter().Matrix * m_parent.m_invWorldMatrix);
var frustum = CameraFrustumGetter();
Vector3I min, max;
// Vector3I ignoreMin, ignoreMax;
var minD = m_localPosition - (double)m_farDistance;
var maxD = m_localPosition + (double)m_farDistance;
MyVoxelCoordSystems.LocalPositionToRenderCellCoord(lodIndex, ref minD, out min);
MyVoxelCoordSystems.LocalPositionToRenderCellCoord(lodIndex, ref maxD, out max);
BoundingBoxI lodBox = new BoundingBoxI(Vector3I.Zero, Vector3I.Max(m_lodSizeMinusOne, Vector3I.Zero));
bool intersects = false;
//bool intersectsNear = false;
m_localFarCameraBox = new BoundingBoxI(min, max);
m_localNearCameraBox = new BoundingBoxI(min, max);
if (lodBox.Intersects(m_localFarCameraBox))
{
intersects = true;
var intersection = lodBox;
intersection.IntersectWith(ref m_localFarCameraBox);
min = intersection.Min;
max = intersection.Max;
//Optimize only LOD2 and higher by two lods, because neighbour cells shares border cells
//if (m_lodIndex > 1)
//{
// float lowerFar, lowerNear;
// MyClipmap.ComputeLodViewBounds(m_clipmap.m_scaleGroup, m_lodIndex - 2, out lowerFar, out lowerNear);
// var minNear = m_localPosition - (lowerNear - MyVoxelCoordSystems.RenderCellSizeInMeters(m_lodIndex) / 2);
// var maxNear = m_localPosition + (lowerNear - MyVoxelCoordSystems.RenderCellSizeInMeters(m_lodIndex) / 2);
// MyVoxelCoordSystems.LocalPositionToRenderCellCoord(m_lodIndex, ref minNear, out ignoreMin);
// MyVoxelCoordSystems.LocalPositionToRenderCellCoord(m_lodIndex, ref maxNear, out ignoreMax);
// m_localNearCameraBox = new BoundingBoxI(ignoreMin, ignoreMax);
// if (lodBox.Intersects(m_localNearCameraBox))
// intersectsNear = false;
//}
}
//if (m_lastMin == min && m_lastMax == max && !m_clipmap.m_updateClipping)
// return;
//m_lastMin = min;
//m_lastMax = max;
//LodLevel parentLod, childLod;
//GetNearbyLodLevels(out parentLod, out childLod);
// Moves cells which are still needed from one collection to another.
// All that is left behind is unloaded as no longer needed.
// Move everything in range to collection of next stored cells.
if (frustumCulling)
{
MyUtils.Swap(ref m_storedCellData, ref m_clippedCells);
m_storedCellData.Clear();
}
if (intersects)
{
float sizeInMetres = MyVoxelCoordSystems.RenderCellSizeInMeters(lodIndex);
MyCellCoord cell = new MyCellCoord(lodIndex, ref min);
for (var it = new Vector3I_RangeIterator(ref min, ref max);
it.IsValid(); it.GetNext(out cell.CoordInLod))
{
//if (intersectsNear &&
// m_localNearCameraBox.Contains(cell.CoordInLod) == ContainmentType.Contains)
// continue;
//if (frustumCulling)
//{
// Vector3D minAABB = Vector3D.Transform((Vector3D)(sizeInMetres * (cell.CoordInLod - 2)), m_clipmap.m_worldMatrix);
// Vector3D maxAABB = Vector3D.Transform((Vector3D)(sizeInMetres * (cell.CoordInLod + 2) + new Vector3(sizeInMetres)), m_clipmap.m_worldMatrix);
// if (frustum.Contains(new BoundingBoxD(minAABB, maxAABB)) == ContainmentType.Disjoint)
// {
// m_outsideCells.Add(cell.CoordInLod);
// continue;
// }
//}
UnclipCell(collector, cell, true);
}
//cache cells around frustum
if (collector.SentRequestsEmpty)
{
foreach (var outsideCell in m_outsideCells)
{
cell.CoordInLod = outsideCell;
UnclipCell(collector, cell, frustumCulling);
}
}
m_outsideCells.Clear();
}
}
public static void RemoveFromUpdate(MyClipmap clipmap)
{
m_toRemove.Add(clipmap);
m_notReady.Remove(clipmap);
}
internal LodLevel(MyClipmap parent, int lodIndex, Vector3I lodSize)
{
m_clipmap = parent;
m_lodIndex = lodIndex;
m_lodSizeMinusOne = lodSize - 1;
}
public UpdateQueueItem(MyClipmap clipmap)
{
Clipmap = clipmap;
}