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/*
* Copyright (c) Contributors, http://opensimulator.org/
* See CONTRIBUTORS.TXT for a full list of copyright holders.
*
* 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 OpenSim Project 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 DEVELOPERS ``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 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.IO;
using OpenSim.Region.Environment.Interfaces;
namespace OpenSim.Region.Environment.Modules.World.Terrain.FileLoaders
{
public class RAW32 : ITerrainLoader
{
#region ITerrainLoader Members
public string FileExtension
{
get { return ".r32"; }
}
public ITerrainChannel LoadFile(string filename)
{
FileInfo file = new FileInfo(filename);
FileStream s = file.Open(FileMode.Open, FileAccess.Read);
ITerrainChannel retval = LoadStream(s);
s.Close();
return retval;
}
public ITerrainChannel LoadFile(string filename, int offsetX, int offsetY, int fileWidth, int fileHeight, int sectionWidth, int sectionHeight)
{
TerrainChannel retval = new TerrainChannel(sectionWidth, sectionHeight);
FileInfo file = new FileInfo(filename);
FileStream s = file.Open(FileMode.Open, FileAccess.Read);
BinaryReader bs = new BinaryReader(s);
int currFileYOffset = 0;
// if our region isn't on the first Y section of the areas to be landscaped, then
// advance to our section of the file
while (currFileYOffset < offsetY)
{
// read a whole strip of regions
int heightsToRead = sectionHeight * (fileWidth * sectionWidth);
bs.ReadBytes(heightsToRead * 4); // because the floats are 4 bytes in the file
currFileYOffset++;
}
// got to the Y start offset within the file of our region
// so read the file bits associated with our region
int y;
// for each Y within our Y offset
for (y = 0; y < sectionHeight; y++)
{
int currFileXOffset = 0;
// if our region isn't the first X section of the areas to be landscaped, then
// advance the stream to the X start pos of our section in the file
// i.e. eat X upto where we start
while (currFileXOffset < offsetX)
{
bs.ReadBytes(sectionWidth * 4); // 4 bytes = single
currFileXOffset++;
}
// got to our X offset, so write our regions X line
int x;
for (x = 0; x < sectionWidth; x++)
{
// Read a strip and continue
retval[x, y] = bs.ReadSingle();
}
// record that we wrote it
currFileXOffset++;
// if our region isn't the last X section of the areas to be landscaped, then
// advance the stream to the end of this Y column
while (currFileXOffset < fileWidth)
{
// eat the next regions x line
bs.ReadBytes(sectionWidth * 4); // 4 bytes = single
currFileXOffset++;
}
}
bs.Close();
s.Close();
return retval;
}
public ITerrainChannel LoadStream(Stream s)
{
TerrainChannel retval = new TerrainChannel();
BinaryReader bs = new BinaryReader(s);
int y;
for (y = 0; y < retval.Height; y++)
{
int x;
for (x = 0; x < retval.Width; x++)
{
retval[x, y] = bs.ReadSingle();
}
}
bs.Close();
return retval;
}
public void SaveFile(string filename, ITerrainChannel map)
{
FileInfo file = new FileInfo(filename);
FileStream s = file.Open(FileMode.Create, FileAccess.Write);
SaveStream(s, map);
s.Close();
}
public void SaveStream(Stream s, ITerrainChannel map)
{
BinaryWriter bs = new BinaryWriter(s);
int y;
for (y = 0; y < map.Height; y++)
{
int x;
for (x = 0; x < map.Width; x++)
{
bs.Write((float) map[x, y]);
}
}
bs.Close();
}
#endregion
public override string ToString()
{
return "RAW32";
}
}
}
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