private void LASReaderThread(string path, int pointskip, Action <Thread, Vector3[]> cb)
{
byte[] bytes = File.ReadAllBytes(path);
LASHeader_1_2 header = LASHeaders.MarshalHeader(bytes, true);
LASReaderThread(pointskip, cb, bytes, header);
}
public static Vector3 GetFirstPoint(byte[] bytes, LASHeader_1_2 header)
{
bytes = bytes.Skip((int)header.OffsetToPointData).ToArray();
using (MemoryStream stream = new MemoryStream(bytes))
{
using (BinaryReader reader = new BinaryReader(stream))
{
byte[] point = reader.ReadBytes(header.PointDataRecordLength);
int x = BitConverter.ToInt32(point, 0);
int y = BitConverter.ToInt32(point, 4);
int z = BitConverter.ToInt32(point, 8);
//ushort R = BitConverter.ToUInt16(point, 28);
//ushort G = BitConverter.ToUInt16(point, 30);
//ushort B = BitConverter.ToUInt16(point, 32);
Vector3 pos = new Vector3((float)((x * header.XScaleFactor) + (header.XOffset)),
((float)((y * header.YScaleFactor) + (header.YOffset))),
((float)((z * header.ZScaleFactor) + (header.ZOffset))));
return(pos);
}
}
}
/// <summary>
/// starts the conversion
/// </summary>
public void Convert()
{
for (int i = 0; i < _files.Length; i++)
{
byte[] bytes = File.ReadAllBytes(_files[i]);
LASHeader_1_2 header = LASHeaders.MarshalHeader(bytes, true);
if (!_merge)
{
Thread t = _pointReader.ReadLASPointsAsync(bytes, header);
_separateQues.Add(t, new ConcurrentQueue <string>());
StartSeparateWriter(Path.Combine(_outputpath, _files[i].Split('/').Last() + ".pcache"), header, _pskip, t);
}
else
{
Thread t = _pointReader.ReadLASPointsAsync(bytes, header);
_totalrecords += Mathf.FloorToInt((header.NumberOfPointRecords / (float)(1 + _pskip)));
}
}
if (_merge)
{
StartMergeWriter(_totalrecords);
}
}
private void StartSeparateWriter(string outputpath, LASHeader_1_2 header, int pskip, Thread observe)
{
Thread t = new Thread(() => SingleWriterThread(outputpath, header, pskip, observe));
t.Start();
_progresses.Add(t, 0);
}
/// <summary>
/// Takes in the bytes of a .las file and the header,
/// and proceeds to read the points.
/// </summary>
/// <param name="bytes">bytes of a .las-file</param>
/// <param name="header">header of the .las file</param>
/// <returns>the reader thread</returns>
public Thread ReadLASPointsAsync(byte[] bytes, LASHeader_1_2 header)
{
Thread t = new Thread(() =>
{
LASReaderThread(_pskip, _batchAction, bytes, header);
ThreadFinished(Thread.CurrentThread);
});
t.IsBackground = true;
QueueThread(t);
return(t);
}
private void SingleWriterThread(string outputpath, LASHeader_1_2 header, int pskip, Thread observe)
{
using (StreamWriter writer = new StreamWriter(outputpath))
{
int targetamount = Mathf.FloorToInt((float)header.NumberOfPointRecords / (1 + pskip) + 1);
int written = 0;
writer.WriteLine("pcache");
writer.WriteLine("format ascii 1.0");
writer.WriteLine("elements " + targetamount);
writer.WriteLine("property float position.x");
writer.WriteLine("property float position.y");
writer.WriteLine("property float position.z");
writer.WriteLine("end_header");
while (true)
{
if (_separateQues[observe].TryDequeue(out string row))
{
writer.WriteLine(row);
if (written % 1000 == 0)
{
_progresses[Thread.CurrentThread] = (written / (float)targetamount);
}
written++;
}
else
{
Thread.Sleep(10);
}
if (_cancel || (!observe.IsAlive && !observe.ThreadState.HasFlag(ThreadState.Unstarted) && _separateQues[observe].Count == 0))
{
break;
}
}
_progresses[Thread.CurrentThread] = 1;
}
}
public void OnGUI()
{
scrollpos = EditorGUILayout.BeginScrollView(scrollpos);
EditorGUILayout.LabelField("EXPERIMENTAL Editor to easily instantiate VFX Graphs from .las into the scene");
EditorGUILayout.LabelField("\n");
EditorGUILayout.LabelField(".las files in StreamingAssets:");
EditorGUILayout.PropertyField(filenamesprop, true);
if (GUILayout.Button("Add file"))
{
string path = EditorUtility.OpenFilePanel("select .las file", "Assets/StreamingAssets", "las");
string[] filepath = path.Split('/');
filenames.Add(filepath[filepath.Length - 1]);
}
EditorGUILayout.LabelField("\n");
EditorGUILayout.LabelField("VisualEffect to be used:");
EditorGUILayout.LabelField("Requires two exposed properties in the graph");
EditorGUILayout.LabelField("1. _PositionMapArray (Texture2DArray)");
EditorGUILayout.LabelField("2. _Depth (int)");
EditorGUILayout.PropertyField(vfxgraphprop, true);
EditorGUILayout.LabelField("\n");
EditorGUILayout.LabelField("Whether to merge all to one LASBinder or create separate");
EditorGUILayout.LabelField("(try to disable if precision of the graph becomes a problem)");
EditorGUILayout.PropertyField(mergeFilesprop, true);
EditorGUILayout.LabelField("\n");
EditorGUILayout.LabelField("Amount of points to skip in between readings:");
EditorGUILayout.PropertyField(pointskipprop, true);
EditorGUILayout.LabelField("\n");
EditorGUILayout.LabelField("Whether to center the first point to zero and use it as origin:");
EditorGUILayout.PropertyField(anchortofirstpointprop, true);
pointskipprop.intValue = Mathf.Clamp(pointskipprop.intValue, 0, 10000);
if (GUILayout.Button("Add to selected gameobject"))
{
byte[] bytes = File.ReadAllBytes(Path.Combine(Application.streamingAssetsPath, filenames[0]));
LASHeader_1_2 firstfileheader = LASHeaders.MarshalHeader(bytes, true);
anchor = LASPointReader.GetFirstPoint(bytes, firstfileheader);
if (Selection.transforms != null && Selection.transforms.Length > 0)
{
parent = Selection.transforms[0];
}
if (!mergefiles)
{
generated = 0;
EditorApplication.update += FrameByFrameNewGraph;
}
else
{
NewGraph(filenames, parent, anchor);
}
}
EditorGUILayout.LabelField("\n");
EditorGUILayout.EndScrollView();
so.ApplyModifiedProperties();
so.Update();
}
private void LASReaderThread(int pointskip, Action <Thread, Vector3[]> cb, byte[] bytes, LASHeader_1_2 header)
{
bytes = bytes.Skip((int)header.OffsetToPointData).ToArray();
List <Vector3> vertices = new List <Vector3>();
using (MemoryStream stream = new MemoryStream(bytes))
{
using (BinaryReader reader = new BinaryReader(stream))
{
for (int i = 0; i < header.NumberOfPointRecords; i++)
{
byte[] point = reader.ReadBytes(header.PointDataRecordLength);
if (i % (1 + pointskip) != 0)
{
continue;
}
int x = BitConverter.ToInt32(point, 0);
int y = BitConverter.ToInt32(point, 4);
int z = BitConverter.ToInt32(point, 8);
//ushort R = BitConverter.ToUInt16(point, 28);
//ushort G = BitConverter.ToUInt16(point, 30);
//ushort B = BitConverter.ToUInt16(point, 32);
Vector3 pos = new Vector3((float)((x * header.XScaleFactor) + (header.XOffset)),
((float)((y * header.YScaleFactor) + (header.YOffset))),
((float)((z * header.ZScaleFactor) + (header.ZOffset))));
vertices.Add(pos);
if (vertices.Count > THREAD_NOTIFY_AMOUNT)
{
cb.Invoke(Thread.CurrentThread, vertices.ToArray());
vertices.Clear();
}
if (_cancel)
{
break;
}
}
}
cb.Invoke(Thread.CurrentThread, vertices.ToArray());
}
}
