public void RequestLeafLoad(QTreeLeaf leaf)
{
if (leaf.State == LoadedState.UNLOADED && leaf.ListInfos.Count > 0 && leafLoadRequestQueue.Count < 1000)
{
leaf.State = LoadedState.REQUEST_LOAD;
if (leaf.ListInfos.Count > 0)
{
leafLoadRequestQueue.Enqueue(leaf);
}
}
}
private List <VBOStorageInformation> serverBufferIds = new List <VBOStorageInformation>(); //VBOS from all children
public QTreeNode(BoundingBox boundingBox, QTree parentTree, QTreeNode parentNode, int hierarchyLevel)
{
NUM_NODES++;
this.ParentNodeID = parentNode;
this.boundingBox = boundingBox;
nodeHierarchyLevel = (float)hierarchyLevel / parentTree.NumberOfTreeLevels;
//if bounding box is bigger than allowed split it nodes
if (boundingBox.width > MAX_WIDTH || boundingBox.height > MAX_HEIGHT)
{
nodes = new QTreeNode[4];
BoundingBox bb = new BoundingBox();
bb.width = boundingBox.width / 2.0f;
bb.height = boundingBox.height / 2.0f;
bb.x = boundingBox.x + bb.width;
bb.y = boundingBox.y;
nodes[NE] = new QTreeNode(bb, parentTree, this, hierarchyLevel + 1);
bb.x = boundingBox.x;
nodes[NW] = new QTreeNode(bb, parentTree, this, hierarchyLevel + 1);
bb.y += bb.height;
nodes[SW] = new QTreeNode(bb, parentTree, this, hierarchyLevel + 1);
bb.x += bb.width;
nodes[SE] = new QTreeNode(bb, parentTree, this, hierarchyLevel + 1);
}
else
{
//node is final - contains only data which is present in QTreeLeaf
leaf = new QTreeLeaf(boundingBox, parentTree.TreeID, this);
}
}
/// <summary>
/// leads leafs in a separate thread
/// </summary>
private void LeafLoader()
{
TimeSpan accLoadTime = new TimeSpan();
long loadCount = 0;
TimeSpan accReadTime = new TimeSpan();
TimeSpan readTemp = new TimeSpan();
Stopwatch stopwatch = new Stopwatch();
long accPointsPerLeaf = 0;
QTreeLeaf leaf = null;
while (runLeafLoader)
{
if (LasMetrics.GetInstance().leafLoadToggle&& leafLoadRequestQueue.Count > 0)
{
leaf = leafLoadRequestQueue.Dequeue();
if (leaf == null)
{
continue;
}
if (leaf.State == LoadedState.REQUEST_LOAD) //if leaf still wants to be loaded
{
stopwatch.Start();
long readTicks = 0;
for (int i = 0; i < leaf.ListInfos.Count; i++)
{
readTemp = stopwatch.Elapsed;
Point3D[] pts = GetPoints(GetQtreeByGuid(leaf.ParentTreeID), leaf.ListInfos[i].startingPointIndex, leaf.ListInfos[i].numberOfPoints);
readTicks = stopwatch.ElapsedTicks;
accReadTime += (stopwatch.Elapsed - readTemp);
leaf.InsertPoints(i, pts);
}
if (CALCULATE_NORMALS == true)
{
leaf.CalculateNormals();
}
long loadTicks = stopwatch.ElapsedTicks;
accLoadTime += stopwatch.Elapsed;
stopwatch.Stop();
loadCount++;
stopwatch.Reset();
leaf.State = LoadedState.BUFFERED_IN_RAM;
if (loadCount > 0)
{
double avgLoadTime = accLoadTime.TotalMilliseconds / loadCount;
double avgLoadTimeNoRead = (accLoadTime - accReadTime).TotalMilliseconds / loadCount;
//Console.WriteLine("Avg. time from disk to GPU: {0} ms, without disk reads: {1} ms", avgLoadTime, avgLoadTimeNoRead);
LasMetrics.GetInstance().avgLoad = avgLoadTime;
LasMetrics.GetInstance().avgLoadNoDisk = avgLoadTimeNoRead;
accPointsPerLeaf += leaf.NumberOfPoints;
LasMetrics.GetInstance().avgPointsPerLeaf = (double)accPointsPerLeaf / loadCount;
}
}
leaf = null;
}
else
{
Thread.Sleep(leafLoaderMSsleepInterval);
}
}
}
/// <summary>
/// calculates normals for point list at specified index
/// </summary>
/// <param name="pointListIdx"></param>
private void CalculateNormals(int pointListIdx)
{
//2 consecutive points from the pointListIdx array will be taken and closest from the previous
//or next point list
Point3D[] pointList = ContainedPointLists[pointListIdx];
int len = pointList.Length;
int closestPointIdxPrevList = -1;
int closestPointIdxNextList = -1;
int closestListIdx = -1;
int closestPointIdxOnClosestList = -1;
//iterate over array and calculate normals for one point back. last point will have same normal as one before
for (int i = 1; i < pointList.Length - 1; i++)
{
Point3D p1 = pointList[i];
Point3D p2 = pointList[i - 1];
Point3D p3;
closestPointIdxPrevList = findClosestPoint(pointListIdx - 1, p2, p1, i);
closestPointIdxNextList = findClosestPoint(pointListIdx + 1, p2, p1, i);
if (closestPointIdxPrevList < 0 && closestPointIdxNextList < 0)
{
//problem - only one list in BB?!
pointList[i].nx = 0;
pointList[i].ny = 1;
pointList[i].nz = 0;
continue;
}
else
{
//calculate and compare distances from closest points on other lists between each other and pick
//the point that is closer
float len1 = float.MaxValue;
float len2 = float.MaxValue;
if (closestPointIdxPrevList >= 0)
{
Point3D p3a = ContainedPointLists[pointListIdx - 1][closestPointIdxPrevList];
len1 = (p3a - p1).Length + (p3a - p2).Length;
}
if (closestPointIdxNextList >= 0)
{
Point3D p3b = ContainedPointLists[pointListIdx + 1][closestPointIdxNextList];
len2 = (p3b - p1).Length + (p3b - p2).Length;
}
if (len1 < len2)
{
p3 = ContainedPointLists[pointListIdx - 1][closestPointIdxPrevList];
closestListIdx = pointListIdx - 1;
closestPointIdxOnClosestList = closestPointIdxPrevList;
}
else
{
p3 = ContainedPointLists[pointListIdx + 1][closestPointIdxNextList];
closestListIdx = pointListIdx + 1;
closestPointIdxOnClosestList = closestPointIdxNextList;
}
}
//handle long And narrow triangles by expanding p1 and p2 farther away from each other
if (QTreeLeaf.isLongAndNarrow(p1, p2, p3))
{
bool solutionFound = false;
int leftIndex = i - 2;
int rightIndex = i + 1;
Point3D left = p1, right = p2;
int iterationsNeeded = 0;
while (leftIndex >= 0 && rightIndex < pointList.Length && iterationsNeeded < MAX_ITERATIONS_NORMAL)
{
iterationsNeeded++;
p1 = pointList[leftIndex];
p2 = pointList[rightIndex];
if (!isLongAndNarrow(p1, p2, p3))
{
solutionFound = true;
break;
}
leftIndex--;
rightIndex++;
}
if (!solutionFound)
{
p1 = pointList[i];
iterationsNeeded = 0;
//go through closest list and all the point there to find a more suitable p2
for (int cli = closestPointIdxOnClosestList + 1; cli < ContainedPointLists[closestListIdx].Length &&
iterationsNeeded < MAX_ITERATIONS_SECOND
; cli++)
{
p2 = ContainedPointLists[closestListIdx][cli];
iterationsNeeded++;
if (!isLongAndNarrow(p1, p2, p3))
{
solutionFound = true;
break;
}
}
if (!solutionFound)
{
iterationsNeeded = 0;
//try the other way too
for (int cli = closestPointIdxOnClosestList - 1; cli >= 0 &&
iterationsNeeded < MAX_ITERATIONS_SECOND; cli--)
{
p2 = ContainedPointLists[closestListIdx][cli];
iterationsNeeded++;
if (!isLongAndNarrow(p1, p2, p3))
{
solutionFound = true;
break;
}
}
}
if (!solutionFound)
{
//TODO: find yet another way or revert to the first three points
p2 = pointList[i - 1];
//seach for p3 on this same list, in case it goes back and forth like it sometimes does
iterationsNeeded = 0;
//up to point i
for (int s = 0; s < pointList.Length && iterationsNeeded < MAX_ITERATIONS_SAME; s++)
{
if (s < i - 5 || s > i + 5)
{
Point3D ppp = pointList[s];
iterationsNeeded++;
if (!isLongAndNarrow(p1, p2, ppp))
{
solutionFound = true;
break;
}
}
}
}
}
}
//Vector3f normal = Vector3f.CrossProduct(pointList[i - 1] - pointList[i+1], pointList[i+1] - closestPointList[closestPointIdx]);
//Vector3f normal = Vector3f.CrossProduct(pointList[i - 1] - pointList[i + 1], closestPointList[closestPointIdx] - pointList[i + 1]);
Vector3f normal = Vector3f.CrossProduct(p2 - p1, p3 - p1);
normal.Normalize();
pointList[i].nx = normal.x;
pointList[i].ny = normal.y;
pointList[i].nz = normal.z;
if (normal.z < 0) //z and y coordinates are inverted!! - Z is height here
{
pointList[i].nx = -normal.x;
pointList[i].ny = -normal.y;
pointList[i].nz = -normal.z;
}
}
//last point has same normal as the one before her. first one is same as second one
if (len > 1)
{
pointList[0].nx = pointList[1].nx;
pointList[0].ny = pointList[1].ny;
pointList[0].nz = pointList[1].nz;
pointList[len - 1].nx = pointList[len - 2].nx;
pointList[len - 1].ny = pointList[len - 2].ny;
pointList[len - 1].nz = pointList[len - 2].nz;
}
}