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