public static BvhDocument Parse(string text)
{
var rt = new BvhDocument();
var tokenizer = new BvhTokenizer(text);
var header = new[] { "HIERARCHY" };
if (!tokenizer.Take(header.Length).Select(_ => _.Text).SequenceEqual(header))
{
throw new InvalidOperationException("invalid format");
}
foreach (var i in tokenizer)
{
if (i.Kind == BvhTokenizer.IdentifierTokenKind)
{
switch (i.Text)
{
case "ROOT":
rt.Root = BvhJoint.Parse(BvhData.Parse(tokenizer));
break;
case "MOTION":
rt.Motion = BvhMotion.Parse(rt, tokenizer);
break;
}
}
}
return(rt);
}
public static BvhData Parse(BvhTokenizer tokenizer)
{
while (tokenizer.Current.Kind == BvhTokenizer.NewLineTokenKind)
{
tokenizer.MoveNext();
}
var rt = new BvhData();
if (tokenizer.Current.Kind == BvhTokenizer.IdentifierTokenKind)
{
rt.Name = tokenizer.Current.Text;
tokenizer.MoveNext();
}
rt.Values = tokenizer.StartWith(tokenizer.Current)
.TakeWhile(_ => _.Kind != BvhTokenizer.NewLineTokenKind && _.Kind != BvhTokenizer.BeginChildrenTokenKind)
.Select(_ => _.Text)
.ToList();
if (tokenizer.Current.Kind == BvhTokenizer.NewLineTokenKind &&
tokenizer.PeekNext().Kind == BvhTokenizer.BeginChildrenTokenKind)
{
tokenizer.MoveNext(BvhTokenizer.NewLineTokenKind);
rt.Children = tokenizer.TakeWhile(_ => _.Kind != BvhTokenizer.EndChildrenTokenKind)
.Select(_ => Parse(tokenizer))
.ToList();
tokenizer.MoveNext(BvhTokenizer.EndChildrenTokenKind);
}
return(rt);
}
public static BvhData Parse(BvhTokenizer tokenizer)
{
while (tokenizer.Current.Kind == BvhTokenizer.NewLineTokenKind)
tokenizer.MoveNext();
var rt = new BvhData();
if (tokenizer.Current.Kind == BvhTokenizer.IdentifierTokenKind)
{
rt.Name = tokenizer.Current.Text;
tokenizer.MoveNext();
}
rt.Values = tokenizer.StartWith(tokenizer.Current)
.TakeWhile(_ => _.Kind != BvhTokenizer.NewLineTokenKind && _.Kind != BvhTokenizer.BeginChildrenTokenKind)
.Select(_ => _.Text)
.ToList();
if (tokenizer.Current.Kind == BvhTokenizer.NewLineTokenKind &&
tokenizer.PeekNext().Kind == BvhTokenizer.BeginChildrenTokenKind)
{
tokenizer.MoveNext(BvhTokenizer.NewLineTokenKind);
rt.Children = tokenizer.TakeWhile(_ => _.Kind != BvhTokenizer.EndChildrenTokenKind)
.Select(_ => Parse(tokenizer))
.ToList();
tokenizer.MoveNext(BvhTokenizer.EndChildrenTokenKind);
}
return rt;
}
public static BvhDocument Parse(string text)
{
var rt = new BvhDocument();
var tokenizer = new BvhTokenizer(text);
var header = new[] { "HIERARCHY" };
if (!tokenizer.Take(header.Length).Select(_ => _.Text).SequenceEqual(header))
throw new InvalidOperationException("invalid format");
foreach (var i in tokenizer)
if (i.Kind == BvhTokenizer.IdentifierTokenKind)
{
switch (i.Text)
{
case "ROOT":
rt.Root = BvhJoint.Parse(BvhData.Parse(tokenizer));
break;
case "MOTION":
rt.Motion = BvhMotion.Parse(rt, tokenizer);
break;
}
}
return rt;
}
public static BvhMotion Parse(BvhDocument doc, BvhTokenizer tokenizer)
{
var rt = new BvhMotion();
if (tokenizer.Current.EnsureKind(BvhTokenizer.IdentifierTokenKind).Text == "MOTION")
tokenizer.MoveNext();
tokenizer.MoveNext(BvhTokenizer.NewLineTokenKind);
var frames = tokenizer.Current.EnsureKind(BvhTokenizer.IdentifierTokenKind).Text == "Frames" ? int.Parse(tokenizer.MoveNext().Text) : 0;
tokenizer.MoveNext();
tokenizer.MoveNext(BvhTokenizer.NewLineTokenKind);
if (tokenizer.Current.EnsureKind(BvhTokenizer.IdentifierTokenKind).Text == "Frame")
tokenizer.MoveNext();
rt.FrameTime = tokenizer.Current.EnsureKind(BvhTokenizer.IdentifierTokenKind).Text == "Time" ? float.Parse(tokenizer.MoveNext().Text) : 0;
tokenizer.MoveNext();
var joints = GetJoints(doc.Root).ToArray();
for (int i = 0; i < frames; i++)
{
var values = tokenizer.TakeWhile(_ => _.Kind != BvhTokenizer.NewLineTokenKind).Select(_ => _.Text).Select(float.Parse).ToArray();
var j = 0;
rt.Frames.Add(joints.ToDictionary(_ => _, _ =>
{
var jm = new BvhJointMotion();
var position = new float[3];
var rotation = new float[3];
foreach (var c in _.Channels)
switch (c)
{
case BvhChannel.XPosition:
case BvhChannel.YPosition:
case BvhChannel.ZPosition:
jm.Position = position;
position[(int)c] = values[j++];
break;
case BvhChannel.XRotation:
case BvhChannel.YRotation:
case BvhChannel.ZRotation:
jm.Rotation = rotation;
rotation[c - BvhChannel.XRotation] = values[j++];
break;
}
return jm;
}));
}
return rt;
}
public static BvhMotion Parse(BvhDocument doc, BvhTokenizer tokenizer)
{
var rt = new BvhMotion();
if (tokenizer.Current.EnsureKind(BvhTokenizer.IdentifierTokenKind).Text == "MOTION")
{
tokenizer.MoveNext();
}
tokenizer.MoveNext(BvhTokenizer.NewLineTokenKind);
var frames = tokenizer.Current.EnsureKind(BvhTokenizer.IdentifierTokenKind).Text == "Frames" ? int.Parse(tokenizer.MoveNext().Text) : 0;
tokenizer.MoveNext();
tokenizer.MoveNext(BvhTokenizer.NewLineTokenKind);
if (tokenizer.Current.EnsureKind(BvhTokenizer.IdentifierTokenKind).Text == "Frame")
{
tokenizer.MoveNext();
}
rt.FrameTime = tokenizer.Current.EnsureKind(BvhTokenizer.IdentifierTokenKind).Text == "Time" ? float.Parse(tokenizer.MoveNext().Text) : 0;
tokenizer.MoveNext();
var joints = GetJoints(doc.Root).ToArray();
for (int i = 0; i < frames; i++)
{
var values = tokenizer.TakeWhile(_ => _.Kind != BvhTokenizer.NewLineTokenKind).Select(_ => _.Text).Select(float.Parse).ToArray();
var j = 0;
rt.Frames.Add(joints.ToDictionary(_ => _, _ =>
{
var jm = new BvhJointMotion();
var position = new float[3];
var rotation = new float[3];
foreach (var c in _.Channels)
{
switch (c)
{
case BvhChannel.XPosition:
case BvhChannel.YPosition:
case BvhChannel.ZPosition:
jm.Position = position;
position[(int)c] = values[j++];
break;
case BvhChannel.XRotation:
case BvhChannel.YRotation:
case BvhChannel.ZRotation:
jm.Rotation = rotation;
rotation[c - BvhChannel.XRotation] = values[j++];
break;
}
}
return(jm);
}));
}
return(rt);
}