aboutsummaryrefslogtreecommitdiffstatshomepage
path: root/OpenSim/Region/Environment/Modules/World/Terrain/FileLoaders/RAW32.cs
blob: 758821a098d479f44b05ced13f0c6ba29b665375 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
/*
 * 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";
        }
    }
}