67 lines
1.9 KiB
C#
67 lines
1.9 KiB
C#
#region Copyright & License Information
|
|
/*
|
|
* Copyright 2007-2016 The OpenRA Developers (see AUTHORS)
|
|
* This file is part of OpenRA, which is free software. It is made
|
|
* available to you under the terms of the GNU General Public License
|
|
* as published by the Free Software Foundation, either version 3 of
|
|
* the License, or (at your option) any later version. For more
|
|
* information, see COPYING.
|
|
*/
|
|
|
|
#endregion
|
|
|
|
using System;
|
|
using System.IO;
|
|
using OpenRA.Graphics;
|
|
|
|
namespace OpenRA.FileFormats
|
|
{
|
|
public class HvaReader
|
|
{
|
|
public readonly uint FrameCount;
|
|
public readonly uint LimbCount;
|
|
public readonly float[] Transforms;
|
|
|
|
public HvaReader(Stream s, string fileName)
|
|
{
|
|
// Index swaps for transposing a matrix
|
|
var ids = new byte[] { 0, 4, 8, 12, 1, 5, 9, 13, 2, 6, 10, 14 };
|
|
|
|
s.Seek(16, SeekOrigin.Begin);
|
|
FrameCount = s.ReadUInt32();
|
|
LimbCount = s.ReadUInt32();
|
|
|
|
// Skip limb names
|
|
s.Seek(16 * LimbCount, SeekOrigin.Current);
|
|
Transforms = new float[16 * FrameCount * LimbCount];
|
|
|
|
var testMatrix = new float[16];
|
|
for (var j = 0; j < FrameCount; j++)
|
|
for (var i = 0; i < LimbCount; i++)
|
|
{
|
|
// Convert to column-major matrices and add the final matrix row
|
|
var c = 16 * (LimbCount * j + i);
|
|
Transforms[c + 3] = 0;
|
|
Transforms[c + 7] = 0;
|
|
Transforms[c + 11] = 0;
|
|
Transforms[c + 15] = 1;
|
|
|
|
for (var k = 0; k < 12; k++)
|
|
Transforms[c + ids[k]] = s.ReadFloat();
|
|
|
|
Array.Copy(Transforms, 16 * (LimbCount * j + i), testMatrix, 0, 16);
|
|
if (Util.MatrixInverse(testMatrix) == null)
|
|
throw new InvalidDataException(
|
|
"The transformation matrix for HVA file `{0}` section {1} frame {2} is invalid because it is not invertible!"
|
|
.F(fileName, i, j));
|
|
}
|
|
}
|
|
|
|
public static HvaReader Load(string filename)
|
|
{
|
|
using (var s = File.OpenRead(filename))
|
|
return new HvaReader(s, Path.GetFileName(filename));
|
|
}
|
|
}
|
|
}
|