/// <summary>
/// Get the bones from the model and create a bone class object for
/// each bone. We use our bone class to do the real animated bone work.
/// </summary>
protected void ObtainBones()
{
m_bones.Clear();
foreach (MyModelBone bone in Model.Bones)
{
Matrix boneTransform = bone.Transform;
// Create the bone object and add to the heirarchy
MyCharacterBone newBone = new MyCharacterBone(bone.Name, boneTransform, bone.Parent != -1 ? m_bones[bone.Parent] : null);
// Add to the bones for this model
m_bones.Add(newBone);
}
}
/// <summary>
/// Constructor for a bone object
/// </summary>
/// <param name="name">The name of the bone</param>
/// <param name="bindTransform">The initial bind transform for the bone</param>
/// <param name="parent">A parent for this bone</param>
public MyCharacterBone(string name, Matrix bindTransform, MyCharacterBone parent)
{
this.Name = name;
this.m_parent = parent;
this.m_bindTransform = bindTransform;
this.m_bindTransformInv = Matrix.Invert(bindTransform);
this.m_bindRotationInv = Quaternion.CreateFromRotationMatrix(m_bindTransformInv);
this.m_children = new List<MyCharacterBone>();
if (this.m_parent != null) this.m_parent.AddChild(this);
// Set the skinning bind transform
// That is the inverse of the absolute transform in the bind pose
ComputeAbsoluteTransform();
SkinTransform = Matrix.Invert(AbsoluteTransform);
}
internal void AddChild(MyCharacterBone child)
{
m_children.Add(child);
}
internal void AddChild(MyCharacterBone child)
{
m_children.Add(child);
}