private static BVHChannels[] ReadChannels(StreamReader reader)
{
string line = reader.ReadLine().ToLower().Trim();
string[] tokens = line.Split(new[] { ' ', '\t' }, StringSplitOptions.RemoveEmptyEntries);
if (tokens[0] != "channels")
{
throw new FileFormatException("Expected CHANNELS keyword");
}
int numChannels = Int32.Parse(tokens[1]);
if (tokens.Length != numChannels + 2)
{
throw new FileFormatException(
$"Invalid CHANNELs Definition: {numChannels} expected, but {tokens.Length - 2} found");
}
BVHChannels[] channels = new BVHChannels[numChannels];
for (int i = 0; i < numChannels; i++)
{
if (!Enum.TryParse <BVHChannels>(tokens[i + 2], true, out channels[i]))
{
throw new FileFormatException($"Invalid channel: {tokens[i + 2]}");
}
}
return(channels);
}
private static Vector3D GetAxisFromChannelType(BVHChannels channel)
{
switch (channel)
{
case BVHChannels.Xrotation:
return(new Vector3D(1, 0, 0));
case BVHChannels.Yrotation:
return(new Vector3D(0, 1, 0));
case BVHChannels.Zrotation:
return(new Vector3D(0, 0, 1));
default:
throw new InvalidOperationException($"Channel type {channel} not supported");
}
}
