/**
* @brief Stores the current clip into a Unity .anim file
* Important: If you use your own character with blend shapes, you have to make sure it is
* set to 'legacy' animation type. You can do this by the following steps in Unity3D:
* 1. In the 'project' window in the Assets hierarchy, click on your fbx model
* 2. In the Inspector, you should see now the Import Settings of your model.
* 3. Select in these Import Settings in the 'Rig' tab for the 'Animation Type' the value 'Legacy'
*/
public void SaveClipAsAnim(string path)
{
bool have_t_pose = false;
if (m_tpose != null && m_tpose.m_joints != null)
{
if (m_tpose.m_joints.Count != targetTransformations.Count)
{
Debug.LogError("tpose and model do not have the same number of transformations (" + m_tpose.m_joints.Count + "!="
+ targetTransformations.Count + ")");
return;
}
have_t_pose = true;
}
else
{
Debug.LogWarning("tpose missing");
}
AnimationClip animation_clip = new AnimationClip();
// Not all of them might actually be used, since not all of them might be a target
AnimationCurve [] translation_x_curves = new AnimationCurve[targetTransformations.Count];
AnimationCurve [] translation_y_curves = new AnimationCurve[targetTransformations.Count];
AnimationCurve [] translation_z_curves = new AnimationCurve[targetTransformations.Count];
AnimationCurve [] rotation_x_curves = new AnimationCurve[targetTransformations.Count];
AnimationCurve [] rotation_y_curves = new AnimationCurve[targetTransformations.Count];
AnimationCurve [] rotation_z_curves = new AnimationCurve[targetTransformations.Count];
AnimationCurve [] rotation_w_curves = new AnimationCurve[targetTransformations.Count];
AnimationCurve [] bs_curves = new AnimationCurve[targetBlendShapeInfos.Count];
Debug.Log("nr of clip states: " + m_clip.num_states());
for (int frame_nr = 0; frame_nr < m_clip.num_states(); frame_nr++)
{
// get frame time
float time = (float)(m_clip[frame_nr].timestamp() - m_clip[0].timestamp()) * 0.001f; // time is in ms
// evaluate transformation
TransformationValue [] transformation_values = null;
if (have_t_pose)
{
transformation_values = Utils.evaluate_target_transformations(m_retargeting, m_fs_Rig, m_clip[frame_nr], m_tpose.m_joints);
}
else
{
transformation_values = Utils.evaluate_target_transformations(m_retargeting, m_fs_Rig, m_clip[frame_nr], targetTransformations);
}
if (transformation_values.Length == targetTransformations.Count)
{
for (int index = 0; index < transformation_values.Length; index++)
{
// Apply the value for this target
if (transformation_values[index] != null)
{
// Apply the translation value for this target
if (translation_x_curves[index] == null)
{
translation_x_curves[index] = new AnimationCurve();
translation_y_curves[index] = new AnimationCurve();
translation_z_curves[index] = new AnimationCurve();
}
translation_x_curves[index].AddKey(time, transformation_values[index].m_translation.x);
translation_y_curves[index].AddKey(time, transformation_values[index].m_translation.y);
translation_z_curves[index].AddKey(time, transformation_values[index].m_translation.z);
if (rotation_x_curves[index] == null)
{
rotation_x_curves[index] = new AnimationCurve();
rotation_y_curves[index] = new AnimationCurve();
rotation_z_curves[index] = new AnimationCurve();
rotation_w_curves[index] = new AnimationCurve();
}
// Add to curve for the animation
rotation_x_curves[index].AddKey(time, transformation_values[index].m_rotation.x);
rotation_y_curves[index].AddKey(time, transformation_values[index].m_rotation.y);
rotation_z_curves[index].AddKey(time, transformation_values[index].m_rotation.z);
rotation_w_curves[index].AddKey(time, transformation_values[index].m_rotation.w);
}
}
}
else
{
Debug.LogError("Cannot create transformation as evaluated shape size is incorrect");
}
// evaluate blendshapes
BlendshapeValue [] blendshape_values = Utils.evaluate_target_blendshapes(m_retargeting, m_clip.rig(), m_clip[frame_nr], targetBlendShapeInfos);
if (blendshape_values.Length == targetBlendShapeInfos.Count)
{
for (int index = 0; index < targetBlendShapeInfos.Count; index++)
{
// Apply the value for this target
if (blendshape_values[index] != null)
{
if (bs_curves[index] == null)
{
bs_curves[index] = new AnimationCurve();
}
bs_curves[index].AddKey(time, (float)blendshape_values[index].m_value);
}
}
}
else
{
Debug.LogError("Cannot create blendshapes as evaluated shape size is incorrect");
}
}
// Set all transformation curves for all transformation that are animated
for (int target_nr = 0; target_nr < targetTransformations.Count; target_nr++)
{
// Extract path:
string path_to_transformation = ((TransformationInformation)targetTransformations[target_nr]).transformPath;
// Apply translation curve, if there is one
if (translation_x_curves[target_nr] != null)
{
animation_clip.SetCurve(path_to_transformation, typeof(Transform), "localPosition.x", translation_x_curves[target_nr]);
animation_clip.SetCurve(path_to_transformation, typeof(Transform), "localPosition.y", translation_y_curves[target_nr]);
animation_clip.SetCurve(path_to_transformation, typeof(Transform), "localPosition.z", translation_z_curves[target_nr]);
}
// Apply rotation curve, if there is one
if (rotation_x_curves[target_nr] != null)
{
animation_clip.SetCurve(path_to_transformation, typeof(Transform), "localRotation.x", rotation_x_curves[target_nr]);
animation_clip.SetCurve(path_to_transformation, typeof(Transform), "localRotation.y", rotation_y_curves[target_nr]);
animation_clip.SetCurve(path_to_transformation, typeof(Transform), "localRotation.z", rotation_z_curves[target_nr]);
animation_clip.SetCurve(path_to_transformation, typeof(Transform), "localRotation.w", rotation_w_curves[target_nr]);
}
}
// Without this, there are some weird jumps (rotation) in the animation:
animation_clip.EnsureQuaternionContinuity();
// Set all blendshape curves for all blendshapes that are animated
for (int i = 0; i < targetBlendShapeInfos.Count; i++)
{
if (bs_curves[i] != null)
{
BlendshapeInfo bs_info = (BlendshapeInfo)(targetBlendShapeInfos[i]);
// Debug.Log("bs_curves[" + i + "].length=" + bs_curves[i].length);
string bs_path = bs_info.m_path;
string bs_name = bs_info.m_name;
animation_clip.SetCurve(bs_path, typeof(SkinnedMeshRenderer), "blendShape." + bs_name, bs_curves[i]);
}
}
// animation clip asset
string animation_name = Path.GetFileNameWithoutExtension(path);
animation_clip.name = animation_name;
#if UNITY_EDITOR
AssetDatabase.CreateAsset(animation_clip, path);
#endif
// Add the clip to the animations of the attached game object
Animation my_animation = gameObject.animation;
if (!my_animation)
{
gameObject.AddComponent(typeof(Animation));
my_animation = gameObject.animation;
}
if (my_animation)
{
my_animation.AddClip(animation_clip, animation_name);
my_animation.clip = animation_clip;
my_animation[animation_name].blendMode = AnimationBlendMode.Blend;
}
else
{
print("Error: could not get animation object");
}
Debug.Log("Wrote animation with length " + (1000.0 * animation_clip.length) + " milliseconds");
}
