public TransformationData(PointCloudBounds bounds, TreeImportSettings settings)
{
TransformationMatrix = GetTransformationMatrix(settings);
LasRGB8BitWorkaround = settings.lasRGB8BitWorkaround;
if (settings.normalize)
{
OutputCenterX = -0.5 * (bounds.MaxX + bounds.MinX);
OutputCenterY = -0.5 * (bounds.MaxY + bounds.MinY);
OutputCenterZ = -0.5 * (bounds.MaxZ + bounds.MinZ);
OutputScaleX = 2.0 / (bounds.MaxX - bounds.MinX);
OutputScaleY = 2.0 / (bounds.MaxY - bounds.MinY);
OutputScaleZ = 2.0 / (bounds.MaxZ - bounds.MinZ);
}
else if (settings.center)
{
OutputCenterX = -0.5 * (bounds.MaxX + bounds.MinX);
OutputCenterY = -0.5 * (bounds.MaxY + bounds.MinY);
OutputCenterZ = -0.5 * (bounds.MaxZ + bounds.MinZ);
OutputScaleX = OutputScaleY = OutputScaleZ = 1.0;
}
else
{
OutputCenterX = OutputCenterY = OutputCenterZ = 0.0;
OutputScaleX = OutputScaleY = OutputScaleZ = 1.0;
}
}
public override PointCloudVerticalHistogram GenerateHistogram(PointCloudBounds bounds)
{
var fileName = Path.GetFileName(FilePath);
var result = new PointCloudVerticalHistogram(bounds);
using (var laz = new Laszip(FilePath))
{
long count = laz.Count;
try
{
for (long i = 0; i < count; i++)
{
if (i % (1024 * 8) == 0)
{
var progress = (double)i / count;
EditorUtility.DisplayProgressBar(
$"Generating histogram ({fileName})",
$"{i:N0} points",
(float)progress);
}
var p = laz.GetNextPoint();
result.Add(p.Z);
}
}
finally
{
EditorUtility.ClearProgressBar();
}
}
return(result);
}
public void Encapsulate(PointCloudBounds bounds)
{
MinX = Math.Min(MinX, bounds.MinX);
MinY = Math.Min(MinY, bounds.MinY);
MinZ = Math.Min(MinZ, bounds.MinZ);
MaxX = Math.Max(MaxX, bounds.MaxX);
MaxY = Math.Max(MaxY, bounds.MaxY);
MaxZ = Math.Max(MaxZ, bounds.MaxZ);
}
public override PointCloudVerticalHistogram GenerateHistogram(PointCloudBounds bounds)
{
var fileName = Path.GetFileName(FilePath);
long currentOffset = header.PointDataOffset;
long processed = 0;
long count = header.PointDataCount;
if (header.VersionMajor > 1 || header.VersionMajor == 1 && header.VersionMinor >= 4)
{
if (count == 0)
{
count = (long)header.PointDataCountLong;
}
}
var result = new PointCloudVerticalHistogram(bounds);
using (var file = MemoryMappedFile.CreateFromFile(FilePath ?? throw new Exception("Input file not found."), FileMode.Open))
{
var batchIndex = 0;
var maxArraySize = TreeUtility.CalculateMaxArraySize(header.PointDataSize);
var totalBatchCount = Mathf.CeilToInt((float)count / maxArraySize);
while (processed < count)
{
var batchCount = Math.Min(maxArraySize, count - processed);
var batchSize = batchCount * header.PointDataSize;
using (var view = file.CreateViewAccessor(currentOffset, batchSize, MemoryMappedFileAccess.Read))
{
unsafe
{
batchIndex++;
var progressBarTitle =
$"Generating histogram ({fileName}, batch {batchIndex.ToString()}/{totalBatchCount.ToString()})";
var hst = PointImportJobs.GenerateHistogramLas(view, batchCount, header, bounds, progressBarTitle);
result.AddData(hst.regions);
}
}
processed += batchCount;
currentOffset += batchSize;
}
}
return(result);
}
///<inheritdoc/>
public override PointCloudBounds CalculateBounds()
{
var bounds = new PointCloudBounds()
{
MinX = header.MinX,
MinY = header.MinY,
MinZ = header.MinZ,
MaxX = header.MaxX,
MaxY = header.MaxY,
MaxZ = header.MaxZ,
};
return(bounds);
}
///<inheritdoc/>
public override PointCloudBounds CalculateBounds()
{
using (var laz = new Laszip(FilePath))
{
var bounds = new PointCloudBounds()
{
MinX = laz.MinX,
MinY = laz.MinY,
MinZ = laz.MinZ,
MaxX = laz.MaxX,
MaxY = laz.MaxY,
MaxZ = laz.MaxZ,
};
return(bounds);
}
}
/// <summary>
/// Calculates and returns merged bounds of points from all given processors.
/// </summary>
/// <param name="processors">Enumerable collection of point processors.</param>
private static PointCloudVerticalHistogram GenerateHistogram(IEnumerable <PointProcessor> processors, PointCloudBounds bounds)
{
var result = new PointCloudVerticalHistogram(bounds);
foreach (var processor in processors)
{
unsafe
{
var processorHistogram = processor.GenerateHistogram(bounds);
result.AddData(processorHistogram.regions);
}
}
return(result);
}
public static PointCloudVerticalHistogram GenerateHistogramLas(MemoryMappedViewAccessor accessor, long count,
LasPointProcessor.LasHeader header, PointCloudBounds bounds, string progressBarTitle = null)
{
var maxArraySize = TreeUtility.CalculateMaxArraySize(header.PointDataSize);
if (count > maxArraySize)
{
Debug.LogWarning(
$"Too many points ({count:n0}), truncating to {maxArraySize:n0}");
count = maxArraySize;
}
unsafe
{
byte *ptr = null;
accessor.SafeMemoryMappedViewHandle.AcquirePointer(ref ptr);
try
{
var counts = new NativeArray <int>(JobsUtility.MaxJobThreadCount, Allocator.TempJob);
var histograms = new NativeArray <PointCloudVerticalHistogram>(
JobsUtility.MaxJobThreadCount,
Allocator.TempJob,
NativeArrayOptions.UninitializedMemory);
for (var i = 0; i < histograms.Length; i++)
{
histograms[i] = new PointCloudVerticalHistogram(bounds);
}
try
{
var job = new PointCloudCreateHistogramLasJob()
{
Input = ptr,
Stride = header.PointDataSize,
InputScaleX = header.ScaleX,
InputScaleY = header.ScaleY,
InputScaleZ = header.ScaleZ,
InputOffsetX = header.OffsetX,
InputOffsetY = header.OffsetY,
InputOffsetZ = header.OffsetZ,
Histogram = (PointCloudVerticalHistogram *)histograms.GetUnsafePtr(),
Counts = (int *)counts.GetUnsafePtr(),
ThreadIndex = 0,
};
var h = job.Schedule((int)count, 65536);
while (!h.IsCompleted)
{
System.Threading.Thread.Sleep(100);
var processed = counts.Sum();
var progress = (float)((double)processed / count);
EditorUtility.DisplayProgressBar(
string.IsNullOrEmpty(progressBarTitle) ? "Generating histogram" : progressBarTitle,
$"{processed:N0} points",
progress);
}
var result = new PointCloudVerticalHistogram(bounds);
foreach (var hst in histograms)
{
result.AddData(hst.regions);
}
return(result);
}
finally
{
EditorUtility.ClearProgressBar();
histograms.Dispose();
counts.Dispose();
}
}
finally
{
accessor.SafeMemoryMappedViewHandle.ReleasePointer();
}
}
}
///<inheritdoc/>
public override PointCloudVerticalHistogram GenerateHistogram(PointCloudBounds bounds)
{
return(GenerateHistogramDefault(header, bounds));
}
protected PointCloudVerticalHistogram GenerateHistogramDefault(DefaultHeaderData headerData, PointCloudBounds bounds)
{
var fileName = Path.GetFileName(FilePath);
long currentOffset = headerData.DataOffset;
long processed = 0;
var result = new PointCloudVerticalHistogram(bounds);
using (var file = MemoryMappedFile.CreateFromFile(FilePath ?? throw new Exception("Input file not found."), FileMode.Open))
{
var batchIndex = 0;
var maxArraySize = TreeUtility.CalculateMaxArraySize(headerData.DataStride);
var totalBatchCount = Mathf.CeilToInt((float)headerData.DataCount / maxArraySize);
while (processed < headerData.DataCount)
{
var batchCount = Math.Min(maxArraySize, headerData.DataCount - processed);
var batchSize = batchCount * headerData.DataStride;
using (var view = file.CreateViewAccessor(currentOffset, batchSize, MemoryMappedFileAccess.Read))
{
unsafe
{
batchIndex++;
var progressBarTitle =
$"Calculating bounds ({fileName}, batch {batchIndex.ToString()}/{totalBatchCount.ToString()})";
var batchHistogram = PointImportJobs.GenerateHistogram(view, batchCount,
headerData.DataStride, headerData.Elements, bounds, progressBarTitle);
result.AddData(batchHistogram.regions);
}
}
processed += batchCount;
currentOffset += batchSize;
}
}
return(result);
}
public abstract PointCloudVerticalHistogram GenerateHistogram(PointCloudBounds bounds);
public PointCloudVerticalHistogram(PointCloudBounds bounds)
{
zMin = bounds.MinZ;
zRange = bounds.MaxZ - bounds.MinZ;
}
