/// <summary>
/// Called during the update loop to move the animation forward
/// </summary>
/// <param name="gameTime"></param>
public virtual void Update(GameTime gameTime)
{
if (currentClipValue == null)
{
return;
}
if (paused)
{
return;
}
TimeSpan time = gameTime.ElapsedGameTime;
// Adjust for the rate
if (playbackRate != 1.0f)
{
time = TimeSpan.FromMilliseconds(time.TotalMilliseconds * playbackRate);
}
elapsedPlaybackTime += time;
// See if we should terminate
if (elapsedPlaybackTime >= duration && duration != TimeSpan.Zero ||
elapsedPlaybackTime >= currentClipValue.Duration && duration == TimeSpan.Zero)
{
if (Completed != null)
{
Completed(this, EventArgs.Empty);
}
currentClipValue = null;
return;
}
// Update the animation position.
time += currentTimeValue;
// If we reached the end, loop back to the start.
while (time >= currentClipValue.Duration)
{
time -= currentClipValue.Duration;
}
CurrentTimeValue = time;
OnUpdate();
}
/// <summary>
/// Starts playing a clip
/// </summary>
/// <param name="clip">Animation clip to play</param>
/// <param name="playbackRate">Speed to playback</param>
/// <param name="duration">Length of time to play (max is looping, 0 is once)</param>
public void StartClip(ModelAnimationClip clip, float playbackRate, TimeSpan duration)
{
if (clip == null)
{
throw new ArgumentNullException("Clip required");
}
// Store the clip and reset playing data
currentClipValue = clip;
currentKeyframe = 0;
CurrentTimeValue = TimeSpan.Zero;
elapsedPlaybackTime = TimeSpan.Zero;
paused = false;
// Store the data about how we want to playback
this.playbackRate = playbackRate;
this.duration = duration;
// Call the virtual to allow initialization of the clip
InitClip();
}
protected override AnimationData Read(ContentReader input, AnimationData existingInstance)
{
if (existingInstance != null)
{
return(existingInstance);
}
List <Matrix> bindPose = null;
List <Matrix> invBindPose = null;
Dictionary <string, ModelAnimationClip> modelAnim = null;
Dictionary <string, ModelAnimationClip> rootAnim = null;
List <int> skeleHierarchy = null;
BinaryDataReader ad;
int size = input.ReadInt32();
VirtualStream vs = new VirtualStream(input.BaseStream, input.BaseStream.Position, size);
ad = new BinaryDataReader(vs);
#region BindPoseTag
if (ad.Contains(BindPoseCountTag))
{
int count = ad.GetDataInt32(BindPoseCountTag);
bindPose = new List <Matrix>(count);
ContentBinaryReader br2 = ad.GetData(BindPoseTag);
for (int i = 0; i < count; i++)
{
bindPose.Add(br2.ReadMatrix());
}
br2.Close();
}
#endregion
#region InvBindPoseTag
if (ad.Contains(InvBindPoseCountTag))
{
int count = ad.GetDataInt32(InvBindPoseCountTag);
invBindPose = new List <Matrix>(count);
ContentBinaryReader br2 = ad.GetData(InvBindPoseTag);
for (int i = 0; i < count; i++)
{
invBindPose.Add(br2.ReadMatrix());
}
br2.Close();
}
#endregion
#region AnimationClipTag
if (ad.Contains(ModelAnimationClipCountTag))
{
int count = ad.GetDataInt32(ModelAnimationClipCountTag);
modelAnim = new Dictionary <string, ModelAnimationClip>(count);
ContentBinaryReader br2 = ad.GetData(ModelAnimationClipTag);
for (int i = 0; i < count; i++)
{
string key = br2.ReadStringUnicode();
TimeSpan duration = TimeSpan.FromSeconds(br2.ReadDouble());
int frameCount = br2.ReadInt32();
List <ModelKeyframe> frames = new List <ModelKeyframe>(frameCount);
for (int j = 0; j < frameCount; j++)
{
int bone = br2.ReadInt32();
TimeSpan totalSec = TimeSpan.FromSeconds(br2.ReadDouble());
Matrix transform = br2.ReadMatrix();
ModelKeyframe frame = new ModelKeyframe(bone, totalSec, transform);
frames.Add(frame);
}
ModelAnimationClip clip = new ModelAnimationClip(duration, frames);
modelAnim.Add(key, clip);
}
br2.Close();
}
#endregion
#region RootAnimationClipTag
if (ad.Contains(RootAnimationClipCountTag))
{
int count = ad.GetDataInt32(RootAnimationClipCountTag);
rootAnim = new Dictionary <string, ModelAnimationClip>(count);
ContentBinaryReader br2 = ad.GetData(RootAnimationClipTag);
for (int i = 0; i < count; i++)
{
string key = br2.ReadStringUnicode();
TimeSpan duration = TimeSpan.FromSeconds(br2.ReadDouble());
int frameCount = br2.ReadInt32();
List <ModelKeyframe> frames = new List <ModelKeyframe>(frameCount);
for (int j = 0; j < frameCount; j++)
{
int bone = br2.ReadInt32();
TimeSpan totalSec = TimeSpan.FromSeconds(br2.ReadDouble());
Matrix transform = br2.ReadMatrix();
ModelKeyframe frame = new ModelKeyframe(bone, totalSec, transform);
frames.Add(frame);
}
ModelAnimationClip clip = new ModelAnimationClip(duration, frames);
rootAnim.Add(key, clip);
}
br2.Close();
}
#endregion
#region BoneHierarchyTag
if (ad.Contains(BoneHierarchyCountTag))
{
int count = ad.GetDataInt32(BoneHierarchyCountTag);
skeleHierarchy = new List <int>(count);
ContentBinaryReader br2 = ad.GetData(BoneHierarchyTag);
for (int i = 0; i < count; i++)
{
skeleHierarchy.Add(br2.ReadInt32());
}
br2.Close();
}
#endregion
return(new AnimationData(modelAnim, rootAnim, bindPose, invBindPose, skeleHierarchy));
}
/// <summary>
/// Starts decoding the specified animation clip.
/// </summary>
public void StartClip(ModelAnimationClip clip)
{
StartClip(clip, 1.0f, TimeSpan.MaxValue);
}