/// <summary>
/// Update cached transforms based on the owning game thing and
/// any controlling bones.
/// </summary>
public virtual void UpdateTransforms()
{
Matrix rootToWorld = Owner != null
? Owner.Movement.LocalMatrix
: Matrix.Identity;
Matrix worldToRoot = Matrix.Invert(rootToWorld);
if (parentBone != null)
{
Matrix localToRoot = animator != null
? animator.LocalToWorld(parentBone.Index)
: parentBone.Transform;
if (Owner != null)
{
localToRoot = localToRoot * Matrix.CreateScale(Owner.ReScale);
}
Matrix rootToLocal = Matrix.Invert(localToRoot);
LocalToWorld = localToRoot * rootToWorld;
WorldToLocal = worldToRoot * rootToLocal;
worldToLocalRadius = WorldToLocal.Right.Length();
}
else
{
if (Owner != null)
{
LocalToWorld = Matrix.CreateScale(Owner.ReScale) * rootToWorld;
WorldToLocal = worldToRoot * Matrix.CreateScale(1.0f / Owner.ReScale);
worldToLocalRadius = WorldToLocal.Right.Length();
}
else
{
LocalToWorld = rootToWorld;
WorldToLocal = worldToRoot;
}
}
worldSphere.Radius = localSphere.Radius / worldToLocalRadius;
worldSphere.Center = Vector3.Transform(localSphere.Center, LocalToWorld);
}