/// <summary>
/// Writes an FBX document to the stream
/// </summary>
/// <param name="document"></param>
/// <remarks>
/// ASCII FBX files have no header or footer, so you can call this multiple times
/// </remarks>
public void Write(FbxDocument document)
{
if (document == null)
{
throw new ArgumentNullException(nameof(document));
}
var sb = new LineStringBuilder();
// Write version header (a comment, but required for many importers)
var vMajor = (int)document.Version / 1000;
var vMinor = ((int)document.Version % 1000) / 100;
var vRev = ((int)document.Version % 100) / 10;
sb.Append($"; FBX {vMajor}.{vMinor}.{vRev} project file\n\n");
foreach (var n in document.Nodes)
{
if (n == null)
{
continue;
}
BuildString(n, sb, document.Version);
sb.Append("\n");
}
var b = Encoding.ASCII.GetBytes(sb.ToString());
stream.Write(b, 0, b.Length);
}
// Adds the given node text to the string
void BuildString(FbxNode node, LineStringBuilder sb, FbxVersion version, int indentLevel = 0)
{
// Write identifier
sb.Indent(indentLevel);
node.Identifier.WriteAscii(version, sb, indentLevel);
// Write properties
var first = true;
for (int j = 0; j < node.Properties.Count; j++)
{
var p = node.Properties[j];
if (p == null)
{
continue;
}
if (!first)
{
sb.Append(",");
}
sb.Append(" ");
p.WriteAscii(version, sb, indentLevel);
first = false;
}
// Write child nodes
if (node.Nodes.Count > 0)
{
sb.Append(" {\n");
foreach (var n in node.Nodes)
{
if (n == null)
{
continue;
}
BuildString(n, sb, version, indentLevel + 1);
}
sb.Indent(indentLevel);
sb.Append("}");
}
sb.Append("\n");
}
