/// <summary>
/// animates the skeleton of bones using stored key frame
/// in the AnimationBlender.
/// </summary>
protected override void OnUpdate(GameTime gameTime)
{
// Reset the bone's transform by source transform
this.ModelData.model.CopyBoneTransformsFrom(this.ModelData.boneTransforms);
if (animationList.Count > 0)
{
for (int i = 0; i < this.ModelData.model.Bones.Count; i++)
{
ModelBone bone = this.ModelData.model.Bones[i];
AnimationBlender Blender = animationBlenderList[i];
if (Blender.IsEmpty == false)
{
// if exist KeyFrameSequence in the AnimationBinder,
// calculates the animation key frame matrix
if (Blender.AnimationBinder != null)
{
// gets calculated animation key frame on this time
bone.Transform =
Blender.GetKeyFrameMatrix(
(float)gameTime.ElapsedGameTime.TotalSeconds);
}
}
}
}
base.OnUpdate(gameTime);
}
/// <summary>
/// processes the necessary steps for binding a model.
/// It creates AnimationBlender to the number of the model's bone.
/// </summary>
public override void BindModel(ModelData modelData)
{
base.BindModel(modelData);
if (animationBlenderList.Count == 0)
{
// Insert all bones in the AnimationBinder
for (int i = 0; i < modelData.model.Bones.Count; i++)
{
AnimationBlender animationBlender = new AnimationBlender();
animationBlender.Name = modelData.model.Bones[i].Name;
animationBlenderList.Add(animationBlender);
}
}
}
/// <summary>
/// plays the bone animation by index.
/// </summary>
/// <param name="index">stored animation index</param>
/// <param name="startTime">begin time of the animation</param>
/// <param name="blendTime">blending time of the animation</param>
/// <param name="timeScaleFactor">
/// time scale of the animation (default is 1.0)
/// </param>
/// <param name="playMode">animation play mode</param>
/// <returns></returns>
public bool PlayAnimation(int index, float startTime, float blendTime,
float timeScaleFactor, AnimPlayMode playMode)
{
AnimationSequence animation = GetAnimation(index);
if (animation != null)
{
// Binding the playable AnimationSequence to AnimationBinder
for (int i = 0; i < animation.KeyFrameSequences.Count; i++)
{
KeyFrameSequence sequence = animation.KeyFrameSequences[i];
AnimationBlender blender =
FindAnimationBlenderByBoneName(sequence.BoneName);
if (blender == null)
{
throw new InvalidOperationException(
"The animation specified a bone (\"" + sequence.BoneName +
"\") that the model (\"" + this.Name + "\") does not have.");
}
// Initialize KeyFrameSequence infomation
blender.AddKeyFrameSequence(sequence, startTime, blendTime,
timeScaleFactor, playMode);
}
if (traceAnimation)
{
System.Diagnostics.Debug.WriteLine(
string.Format("Play Animtion : {0} ({1})", Name, index));
}
return(true);
}
return(false);
}
/// <summary>
/// processes the necessary steps for binding a model.
/// It creates AnimationBlender to the number of the model's bone.
/// </summary>
public override void BindModel(ModelData modelData)
{
base.BindModel(modelData);
if (animationBlenderList.Count == 0)
{
// Insert all bones in the AnimationBinder
for (int i = 0; i < modelData.model.Bones.Count; i++)
{
AnimationBlender animationBlender = new AnimationBlender();
animationBlender.Name = modelData.model.Bones[i].Name;
animationBlenderList.Add(animationBlender);
}
}
}