static void Main(string[] args)
{
try
{
string filename = @".\test.las";
LASHeader hdr = new LASHeader();
hdr.VersionMajor = 1;
hdr.VersionMinor = 1;
hdr.DataFormatId = (byte)LASHeader.PointFormat.ePointFormat1;
hdr.PointRecordsCount = 1000; // should be corrected automatically by writer
LASWriter laswriter = new LASWriter(filename, hdr, LASReadWriteMode.LASModeWrite);
LASPoint p = new LASPoint();
p.X = 10;
p.Y = 20;
p.Z = 30;
laswriter.WritePoint(p);
//File.Delete(filename);
}
catch (LASException e)
{
Console.WriteLine("\nLASException! Msg: {0}", e.Message);
}
catch (SystemException e)
{
Console.WriteLine("\nException! Msg: {0}", e.Message);
}
catch
{
Console.WriteLine("Unknown exception caught");
}
Console.WriteLine("End of file");
Console.Read();
}
public void PointValid()
{
LASPoint pointB = new LASPoint();
pointB.X = 23.0;
Assert.IsTrue(point.IsValid());
Assert.IsTrue(pointB.IsValid());
}
static void Main(string[] args)
{
try
{
string filename = @"..\..\..\..\..\test\data\TO_core_last_zoom.las";
LASReader lasreader = new LASReader(filename);
LASHeader h = lasreader.GetHeader();
Console.WriteLine("Version : " + lasreader.GetVersion());
Console.WriteLine("Signature: : " + h.FileSignature);
Console.WriteLine("Format : " + h.DataFormatId);
Console.WriteLine("Project : " + h.ProjectId);
Console.WriteLine("Points count: " + h.PointRecordsCount);
Console.WriteLine("VLRecords count: " + h.VariableLengthRecordsCount);
int counter = 0;
while (lasreader.GetNextPoint())
{
LASPoint laspoint = lasreader.GetPoint();
counter += 1;
}
if (lasreader.GetHeader().PointRecordsCount != counter)
{
throw new LASException("read incorrect number of point records");
}
}
catch (LASException e)
{
Console.WriteLine("\nLASException! Msg: {0}", e.Message);
}
catch (SystemException e)
{
Console.WriteLine("\nException! Msg: {0}", e.Message);
}
catch
{
Console.WriteLine("Unknown exception caught");
}
Console.WriteLine("End of file");
Console.Read();
}
public void ScanFlags()
{
byte zeros = 0;
LASPoint pointS = new LASPoint();
Assert.AreEqual(pointS.ScanFlags, zeros);
pointS.ReturnNumber = 3;
pointS.NumberOfReturns = 7;
pointS.ScanDirection = 0;
pointS.FlightLineEdge = 1;
string expected = "10111011";
byte bits = pointS.ScanFlags;
Assert.AreEqual(Convert.ToString(pointS.ScanFlags, 2), (expected));
LASPoint pointN;
pointN = pointS.Copy();
Assert.AreEqual(pointN.ScanFlags, pointS.ScanFlags);
}
public void SetPointCoordinates()
{
LASPoint pointB = new LASPoint();
pointB.X = 23.0;
Assert.AreEqual(pointB.X, 23.0);
Assert.IsFalse(point.Equals(pointB));
pointB.X = 0.0;
point.X = 0.0;
Assert.IsTrue(point.Equals(point));
pointB.X = 1.123;
pointB.Y = 2.456;
pointB.Z = 3.789;
LASPoint pointC = new LASPoint();
pointC.X = 1.123;
pointC.Y = 2.456;
pointC.Z = 3.789;
Assert.IsTrue(pointC.Equals(pointB));
}
public LASFile(string filename, int pointsToStore)
{
IsLoaded = false;
using (LASReader reader = new LASReader(filename))
using (LASHeader header = reader.GetHeader()) {
ProjectID = header.ProjectId;
Signature = header.FileSignature;
NumPoints = header.PointRecordsCount;
XOffset = header.GetMinX();
YOffset = header.GetMinY();
ZOffset = header.GetMinZ();
XExtent = header.MaxX() - XOffset;
YExtent = header.GetMaxY() - YOffset;
ZExtent = header.GetMaxZ() - ZOffset;
chunks = new List <LASChunk>((int)(NumPoints / LASChunk.ChunkSize + 1));
LASChunk curChunk = new LASChunk(0);
long curOffset = 0, stored = 0;
long pointSkip = NumPoints / pointsToStore;
if (pointSkip <= 0)
{
pointSkip = 1;
}
while (reader.GetNextPoint())
{
curOffset++;
if (curOffset % pointSkip == 0)
{
LASPoint point = reader.GetPoint();
if (point.ReturnNumber > 1)
{
curOffset--;
continue;
}
curChunk.Points.Add(
new LPoint()
{
X = (float)(point.X - XOffset),
Y = (float)(point.Y - YOffset),
Z = (float)(point.Z - ZOffset),
Intensity = (float)point.Intensity
}
);
stored++;
if (curChunk.Points.Count >= LASChunk.ChunkSize)
{
chunks.Add(curChunk);
curChunk = new LASChunk(curOffset);
}
}
}
if (curChunk.Points.Count > 0)
{
chunks.Add(curChunk);
}
StoredPoints = stored;
}
Filename = filename;
IsLoaded = true;
}
