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/******************************************************************************
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* Project: libLAS - http://liblas.org - A BSD library for LAS format data.
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* Author: Martin Vales, martin_gnu@mundo-r.com
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******************************************************************************
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* Copyright (c) 2008, Martin Vales
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* All rights reserved.
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided
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* with the distribution.
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* * Neither the name of the Martin Isenburg or Iowa Department
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* of Natural Resources nor the names of its contributors may be
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* used to endorse or promote products derived from this software
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* without specific prior written permission.
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
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* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
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****************************************************************************/
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using System.Collections.Generic;
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using LASError = System.Int32;
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using LASWriterH = System.IntPtr;
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using LASReaderH = System.IntPtr;
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using LASPointH = System.IntPtr;
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using LASGuidH = System.IntPtr;
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using LASVLRH = System.IntPtr;
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using LASHeaderH = System.IntPtr;
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public class LASReader : IDisposable
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private LASReaderH hReader;
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private LASPoint laspoint;
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/// Creates a LASReaderH object that can be used to read LASHeaderH and LASPointH objects with.
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/// <remarks>The LASReaderH must not be created with a filename that is opened for read or write by any other API functions. </remarks>
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/// <param name="filename">filename to open for read</param>
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public LASReader(String filename)
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hReader = CAPI.LASReader_Create(filename);
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/// Reads the next available point on the LASReaderH instance.
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/// <returns>true if we have next point</returns>
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public bool GetNextPoint()
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IntPtr pointer = CAPI.LASReader_GetNextPoint(hReader);
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if (IntPtr.Zero != pointer)
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laspoint = new LASPoint(pointer);
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/// <returns></returns>
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public string GetVersion()
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return CAPI.LAS_GetVersion();
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/// get the current LASPoint.
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/// <returns>current LASPoint object</returns>
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public LASPoint GetPoint()
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/// Reads a LASPointH from the given position in the LAS file represented by the LASReader instance.
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/// <remarks> If no point is available at that location, NULL is returned. </remarks>
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/// <param name="position">the integer position of the point in the file to read.</param>
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/// <returns>LASPoint object</returns>
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public LASPoint GetPointAt(UInt32 position)
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return new LASPoint(CAPI.LASReader_GetPointAt(hReader, position));
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/// Get the header for the file associated with this Reader Class.
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/// <returns>LASHeader representing the header for the file.</returns>
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public LASHeader GetHeader()
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return new LASHeader(CAPI.LASReader_GetHeader(hReader));
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/// The object user should call this method when they finished with the object. In .NET is magaged by the GC.
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public void Dispose()
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CAPI.LASReader_Destroy(hReader);
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// Clean up unmanaged resources here.
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// Dispose other contained disposable objects.