/// <summary>
/// Interpolate between the two given DbTransforms with the given weight.
/// </summary>
/// <param name="t1">The first transform</param>
/// <param name="t2">The second transform</param>
/// <param name="weight">Value between 0 and 1</param>
/// <returns>The interpolated DbTransform</returns>
public static DbTransform Interpolate(DbTransform t1, DbTransform t2, float weight)
{
return(new DbTransform(
Vector2.Lerp(t1.Translation, t2.Translation, weight),
Quaternion.Slerp(t1.Rotation, t2.Rotation, weight),
Vector2.Lerp(t1.Scale, t2.Scale, weight)));
}
public static DbTransform Combine(DbTransform t1, DbTransform t2)
{
return(new DbTransform(
t1.Translation + t2.Translation,
t1.Rotation * t2.Rotation,
t1.Scale * t2.Scale));
}
internal DbBone(DbArmature armature, BoneData data) : base(data.Name, armature, data.Parent)
{
Origin = new DbTransform(data.Transform);
_tween = DbTransform.Identity;
CurrentGlobalTransform = Origin.GetMatrix();
Length = data.Length;
Bones = new List <DbBone>();
Slots = new List <DbSlot>();
}
internal void ResetRecursive()
{
_tween = DbTransform.Identity;
var parentTransform = Parent?.CurrentGlobalTransform ?? Matrix.Identity;
CurrentGlobalTransform = Origin.GetMatrix() * parentTransform;
foreach (var child in Bones)
{
child.ResetRecursive();
}
}
// TODO: remove slots/bones
internal void UpdateRecursive(TransformTimelineState state)
{
var parentTransform = Parent?.CurrentGlobalTransform ?? Matrix.Identity;
// get the current tween transform
_tween = state.GetState(Name);
// and update the current transform
CurrentGlobalTransform = DbTransform.Combine(Origin, _tween).GetMatrix() *
parentTransform;
// and all children
foreach (var child in Bones)
{
child.UpdateRecursive(state);
}
}