71 lines
1.8 KiB
C#
71 lines
1.8 KiB
C#
#region Copyright & License Information
|
|
/*
|
|
* Copyright 2007-2013 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. For more information,
|
|
* see COPYING.
|
|
*/
|
|
|
|
#endregion
|
|
|
|
using System;
|
|
using System.IO;
|
|
using System.Linq;
|
|
|
|
namespace OpenRA.FileFormats
|
|
{
|
|
public class HvaReader
|
|
{
|
|
public readonly uint FrameCount;
|
|
public readonly uint LimbCount;
|
|
float[] Transforms;
|
|
|
|
public HvaReader(Stream s)
|
|
{
|
|
// 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];
|
|
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();
|
|
}
|
|
}
|
|
|
|
public float[] TransformationMatrix(uint limb, uint frame)
|
|
{
|
|
if (frame >= FrameCount)
|
|
throw new ArgumentOutOfRangeException("frame", "Only {0} frames exist.".F(FrameCount));
|
|
if (limb >= LimbCount)
|
|
throw new ArgumentOutOfRangeException("limb", "Only {1} limbs exist.".F(LimbCount));
|
|
|
|
var t = new float[16];
|
|
Array.Copy(Transforms, 16*(LimbCount*frame + limb), t, 0, 16);
|
|
|
|
return t;
|
|
}
|
|
|
|
public static HvaReader Load(string filename)
|
|
{
|
|
using (var s = File.OpenRead(filename))
|
|
return new HvaReader(s);
|
|
}
|
|
}
|
|
}
|