/// <summary>
/// initializes data manager with data from las file and fills QTree structure with preliminary data
/// </summary>
public void Initialize(QTreeWrapper qtree, bool forcePreprocessing)
{
if (forcePreprocessing)
{
Console.WriteLine("Preprocessing forced. Not using serialized even if available");
PreprocessDataFromFile(qtree);
SerializeQtreeToFile(qtree, true);
}
else
{
QTree des = DeserializeQtreeFromFile(qtree.filename);
if (des == null)
{
Console.WriteLine("Deserialization failed. Preprocessing.");
PreprocessDataFromFile(qtree);
SerializeQtreeToFile(qtree, true);
}
else
{
qtree.qtree = des;
}
}
if (loadingEndedEvent != null)
{
loadingEndedEvent(true);
}
}
/// <summary>
/// renders the QTree in current openGl context
/// </summary>
private void RenderingPass(QTreeWrapper qtree, float FOV, float near, float far, Vector3f eyeVector, Point2f position)
{
QTree lasTree = qtree.qtree;
if (lasTree != null)
{
lasTree.RenderingPass(FOV, near, far, eyeVector, position - qtree.positionOffset);
/*
* Point3D tempPoint = new Point3D();
* int pointSize = Marshal.SizeOf(tempPoint);
*
* int allowedPointsInMemory = dedicatedPointMemory / pointSize;
*
* float percent = (float)lasTree.numberOfLoadedPoints / (float)allowedPointsInMemory;
*
* //allow discrepancy of 15%
* if (Math.Abs(percent - LOD) > 0.1)
* {
* LOD = (float)allowedPointsInMemory / (float)qtree.lasFile.header.NumberOfPointRecords;
* //lasTree.CascadeLOD(LOD);
* }
*/
}
}
/// <summary>
/// deserializes the tree from the file
/// </summary>
/// <returns>true if successful, false otherwise</returns>
private QTree DeserializeQtreeFromFile(string filename)
{
Console.WriteLine("Deserilaizing qtree from file");
string srlFilename = filename + "." + serializiationExtension;
if (!File.Exists(srlFilename))
{
Console.WriteLine("Deserialization failed. The file does not exist.");
return(null);
}
FileStream fileStreamObject = null;
QTree tree = null;
try
{
fileStreamObject = new FileStream(srlFilename, FileMode.Open);
BinaryFormatter binaryFormatter = new BinaryFormatter();
tree = (binaryFormatter.Deserialize(fileStreamObject)) as QTree;
}
catch (Exception e)
{
Console.WriteLine("Deserialization failed: {0}" + e.ToString());
}
finally
{
if (fileStreamObject != null)
{
fileStreamObject.Close();
}
}
Console.WriteLine("Deserialization finished");
return(tree);
}
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);
}
}
