public static void GetBoneTransformationsTransition(BoneTransformation[] transforms, BoneTransitionState[] transitionState, Animation currentAnimation, Animation stopAnimation, float transitionPosition)
{
for (int boneIndex = 0; boneIndex < currentAnimation.Keyframes[0].UpdateOrderBones.Count; boneIndex++)
{
Bone currentBone = currentAnimation.Keyframes[0].UpdateOrderBones[boneIndex];
Bone transitionBone = null;
foreach (Bone b in stopAnimation.Keyframes[0].UpdateOrderBones)
{
if (currentBone.Name == b.Name)
{
transitionBone = b;
break;
}
}
if (transitionBone == null)
continue;
Vector2 position = Vector2.Lerp(transitionState[boneIndex].Position, transitionBone.Position, transitionPosition);
Vector2 scale = new Vector2(1, 1);
float rotation = MathHelper.Lerp(transitionState[boneIndex].Rotation, transitionBone.Rotation, transitionPosition);
Matrix parentTransform = currentBone.ParentIndex == -1 ? Matrix.Identity : transforms[currentBone.ParentIndex].Transform;
int drawIndex = currentBone.SelfIndex;
transforms[drawIndex].Transform = Matrix.CreateScale(scale.X, scale.Y, 1) *
Matrix.CreateRotationZ(rotation) *
Matrix.CreateTranslation(position.X, position.Y, 0) *
parentTransform;
Vector3 position3, scale3;
Vector2 direction;
Quaternion rotationQ;
transforms[drawIndex].Transform.Decompose(out scale3, out rotationQ, out position3);
direction = Vector2.Transform(Vector2.UnitX, rotationQ);
transforms[drawIndex].Position = new Vector2(position3.X, position3.Y);
transforms[drawIndex].Rotation = (float)Math.Atan2(direction.Y, direction.X);
transforms[drawIndex].Scale = new Vector2(scale3.X, scale3.Y);
}
}
public static void UpdateBoneTransitions(BoneTransitionState[] transitionState, Animation currentAnimation, Animation stopAnimation, float transitionPosition)
{
for (int boneIndex = 0; boneIndex < currentAnimation.Keyframes[0].UpdateOrderBones.Count; boneIndex++)
{
Bone currentBone = currentAnimation.Keyframes[0].UpdateOrderBones[boneIndex];
Bone transitionBone = null;
foreach (Bone b in stopAnimation.Keyframes[0].UpdateOrderBones)
{
if (currentBone.Name == b.Name)
{
transitionBone = b;
break;
}
}
if (transitionBone == null)
continue;
transitionState[boneIndex].Position = Vector2.Lerp(transitionState[boneIndex].Position, transitionBone.Position, transitionPosition);
transitionState[boneIndex].Rotation = MathHelper.Lerp(transitionState[boneIndex].Rotation, transitionBone.Rotation, transitionPosition);
}
}
public void GetBoneTransformations(BoneTransformation[] transforms, BoneTransitionState[] transitions, int keyframeIndex, float time)
{
Keyframe currentKeyframe = Keyframes[keyframeIndex];
Keyframe nextKeyframe;
float t;
if (keyframeIndex == Keyframes.Count - 1)
{
nextKeyframe = Keyframes[0];
if (Loop)
t = time / (LoopTime - currentKeyframe.FrameTime);
else
t = 0;
}
else
{
nextKeyframe = Keyframes[keyframeIndex + 1];
t = time / (nextKeyframe.FrameTime - currentKeyframe.FrameTime);
}
for (int boneIndex = 0; boneIndex < Keyframes[0].UpdateOrderBones.Count; boneIndex++)
{
Vector2 position = Vector2.Lerp(currentKeyframe.UpdateOrderBones[boneIndex].Position, nextKeyframe.UpdateOrderBones[boneIndex].Position, t);
Vector2 scale = Vector2.Lerp(currentKeyframe.UpdateOrderBones[boneIndex].Scale, nextKeyframe.UpdateOrderBones[boneIndex].Scale, t);
float rotation = MathHelper.Lerp(currentKeyframe.UpdateOrderBones[boneIndex].Rotation, nextKeyframe.UpdateOrderBones[boneIndex].Rotation, t);
transitions[boneIndex].Position = position;
transitions[boneIndex].Rotation = rotation;
Matrix parentTransform = currentKeyframe.UpdateOrderBones[boneIndex].ParentIndex == -1 ? Matrix.Identity : transforms[currentKeyframe.UpdateOrderBones[boneIndex].ParentIndex].Transform;
int drawIndex = currentKeyframe.UpdateOrderBones[boneIndex].SelfIndex;
transforms[drawIndex].Transform = Matrix.CreateScale(scale.X, scale.Y, 1) *
Matrix.CreateRotationZ(rotation) *
Matrix.CreateTranslation(position.X, position.Y, 0) *
parentTransform;
Vector3 position3, scale3;
Vector2 direction;
Quaternion rotationQ;
transforms[drawIndex].Transform.Decompose(out scale3, out rotationQ, out position3);
direction = Vector2.Transform(Vector2.UnitX, rotationQ);
transforms[drawIndex].Position = new Vector2(position3.X, position3.Y);
transforms[drawIndex].Scale = new Vector2(scale3.X, scale3.Y);
transforms[drawIndex].Rotation = (float)Math.Atan2(direction.Y, direction.X);
}
}