/// <summary>
/// Extracts the ANM animation from an ANM file stream.
/// </summary>
/// <param name="stream">The stream to extract the ANM from.</param>
/// <param name="fileName">The path or name of the ANM file being extracted.</param>
/// <returns>The extracted ANM animation.</returns>
///
/// <exception cref="ArgumentNullException">
/// <paramref name="stream"/> or <paramref name="fileName"/> is null.
/// </exception>
/// <exception cref="ArgumentException">
/// The <paramref name="stream"/> is closed.
/// </exception>
public static Anm Extract(Stream stream, string fileName)
{
if (fileName == null)
{
throw new ArgumentNullException(nameof(fileName));
}
BinaryReader reader = new BinaryReader(stream);
ANMHDR hdr = reader.ReadUnmanaged <ANMHDR>();
if (hdr.Signature != "ANM")
{
throw new UnexpectedFileTypeException(fileName, "ANM");
}
reader.ReadBytes(20); // Unused (?)
ANMFRM[] frames = new ANMFRM[hdr.FrameCount];
for (int i = 0; i < hdr.FrameCount; i++)
{
frames[i] = reader.ReadUnmanaged <ANMFRM>();
reader.ReadInt32(); // Padding (Probably)
}
return(new Anm(Path.GetFileName(fileName), hdr, frames));
}
/// <summary>
/// Constructs an ANM animation script with the specified file name, header, and script lines.
/// </summary>
/// <param name="fileName">The file name of the ANM animation with the .anm extension.</param>
/// <param name="hdr">The ANMHDR containing extra information on the ANM animation.</param>
/// <param name="lines">The ANMFRM struct array containing script line information.</param>
private AnmAnimation(string fileName, ANMHDR hdr, ANMLINE[] lines)
{
FileName = Path.GetFileName(fileName);
Unknown = hdr.Unknown;
AnmLine[] newLines = new AnmLine[lines.Length];
for (int i = 0; i < lines.Length; i++)
{
newLines[i] = new AnmLine(lines[i]);
}
Lines = newLines.AsReadOnly();
}
/// <summary>
/// Extracts the ANM animation from an ANM file stream.
/// </summary>
/// <param name="stream">The stream to extract the ANM from.</param>
/// <param name="fileName">The path or name of the ANM file being extracted.</param>
/// <returns>The extracted ANM animation.</returns>
///
/// <exception cref="ArgumentNullException">
/// <paramref name="stream"/> or <paramref name="fileName"/> is null.
/// </exception>
/// <exception cref="ArgumentException">
/// The <paramref name="stream"/> is closed.
/// </exception>
public static AnmAnimation Extract(Stream stream, string fileName)
{
if (fileName == null)
{
throw new ArgumentNullException(nameof(fileName));
}
BinaryReader reader = new BinaryReader(stream);
ANMHDR hdr = reader.ReadUnmanaged <ANMHDR>();
UnexpectedFileTypeException.ThrowIfInvalid(hdr.Signature, ANMHDR.ExpectedSignature);
reader.ReadBytes(20); // Unused (?)
ANMLINE[] frames = new ANMLINE[hdr.LineCount];
for (int i = 0; i < hdr.LineCount; i++)
{
frames[i] = reader.ReadUnmanaged <ANMLINE>();
}
return(new AnmAnimation(Path.GetFileName(fileName), hdr, frames));
}
