/**
* Evaluates the target transformation based on the state of a rig and a retargeting configuration.
* If a transform is not affected by the retargeting then the value of the transform is null.
*/
public static TransformationValue [] EvaluateTargetTransformations(ClipRetargeting retargeting,
Rig rig,
RigState state,
ArrayList target_transformations) {
if (retargeting == null || rig == null || state == null || target_transformations == null) {
Debug.LogError("cannot evaluat target transformations as one or more object is null");
return null;
}
int n_target_transformations = target_transformations.Count;
TransformationValue [] values = new TransformationValue[n_target_transformations];
// We iterate over the target transformations and accumulate all sources to them
for (int target_nr = 0; target_nr < target_transformations.Count; target_nr++) {
// get original rotation and translation from tpose
TransformationInformation tpose_joint = target_transformations[target_nr] as TransformationInformation;
if (tpose_joint == null) {
Debug.LogError("joint " + target_nr + " is null");
continue;
}
Vector3 tpose_translation = tpose_joint.localPosition;
Quaternion tpose_local_rotation = tpose_joint.localRotation;
Quaternion tpose_parent_global_rotation = tpose_joint.parentRotation;
Quaternion fs_joint_rotation_local_from_t_pose = Quaternion.identity;
Vector3 fs_joint_translation_local_from_t_pose = new Vector3(0, 0, 0);
// Sum the translation to apply
int value_count_trans = 0;
for (int mapping_nr = 0; mapping_nr < retargeting.GetNumberOfTranslationMappings(); mapping_nr++) {
string mapping_target = retargeting.GetTranslationMappingDestination (mapping_nr);
if (!mapping_target.Equals(tpose_joint.transformName)) {
continue;
}
string mapping_src = retargeting.GetTranslationMappingSource (mapping_nr);
int src_index = rig.BoneIndex (mapping_src);
if (src_index >= 0) {
double mapping_weight = retargeting.GetTranslationMappingWeight (mapping_nr);
fs_joint_translation_local_from_t_pose += state.BoneTranslation (src_index) * (float)mapping_weight;
value_count_trans++;
} else {
Debug.Log ("Could not find source index for '" + mapping_src + "'");
}
}
// Convert translation to global translation
//Vector3 unity_joint_translation_local = fs_joint_translation_local_from_t_pose + tpose_translation;
Vector3 unity_joint_translation_local =
Quaternion.Inverse(tpose_parent_global_rotation) * fs_joint_translation_local_from_t_pose
+ tpose_translation;
// Sum the rotations to apply
int value_count_rot = 0;
for (int mapping_nr = 0; mapping_nr < retargeting.GetNumberOfRotationMappings(); mapping_nr++) {
string mapping_target = retargeting.GetRotationMappingDestination (mapping_nr);
if (!mapping_target.Equals (tpose_joint.transformName)) {
continue;
}
string mapping_src = retargeting.GetRotationMappingSource (mapping_nr);
int src_index = rig.BoneIndex (mapping_src);
if (src_index >= 0) {
double mapping_weight = retargeting.GetRotationMappingWeight (mapping_nr);
// use slerp for weighting
fs_joint_rotation_local_from_t_pose = Quaternion.Slerp (Quaternion.identity, state.BoneRotation (src_index), (float)mapping_weight);
// TODO: here we should accumulate if there are more than one sources (like with blendshapes)
value_count_rot++;
} else {
Debug.Log ("Could not find source rotation for '" + mapping_src);
}
}
// Convert to local unity rotation
Quaternion unity_joint_rotation_local =
Quaternion.Inverse(tpose_parent_global_rotation)
* fs_joint_rotation_local_from_t_pose
* tpose_parent_global_rotation
* tpose_local_rotation; // The initial local rotation;
if (value_count_trans > 0 || value_count_rot > 0) {
values[target_nr] = new TransformationValue(unity_joint_rotation_local, unity_joint_translation_local);
}
}
return values;
}
/**
* Evaluates the target transformation based on the state of a rig and a retargeting configuration.
* If a transform is not affected by the retargeting then the value of the transform is null.
*/
public static TransformationValue [] evaluate_target_transformations(ClipRetargeting retargeting,
Rig rig,
RigState state,
ArrayList target_transformations)
{
if (retargeting == null || rig == null || state == null || target_transformations == null)
{
Debug.LogError("cannot evaluat target transformations as one or more object is null");
return(null);
}
int n_target_transformations = target_transformations.Count;
TransformationValue [] values = new TransformationValue[n_target_transformations];
// We iterate over the target transformations and accumulate all sources to them
for (int target_nr = 0; target_nr < target_transformations.Count; target_nr++)
{
// get original rotation and translation from tpose
TransformationInformation tpose_joint = target_transformations[target_nr] as TransformationInformation;
if (tpose_joint == null)
{
Debug.LogError("joint " + target_nr + " is null");
continue;
}
Vector3 tpose_translation = tpose_joint.localPosition;
Quaternion tpose_local_rotation = tpose_joint.localRotation;
Quaternion tpose_parent_global_rotation = tpose_joint.parentRotation;
Quaternion fs_joint_rotation_local_from_t_pose = Quaternion.identity;
Vector3 fs_joint_translation_local_from_t_pose = new Vector3(0, 0, 0);
// Sum the translation to apply
int value_count_trans = 0;
for (int mapping_nr = 0; mapping_nr < retargeting.get_number_of_translation_mappings(); mapping_nr++)
{
string mapping_target = retargeting.get_translation_mapping_destination(mapping_nr);
if (!mapping_target.Equals(tpose_joint.transformName))
{
continue;
}
string mapping_src = retargeting.get_translation_mapping_source(mapping_nr);
int src_index = rig.bone_index(mapping_src);
if (src_index >= 0)
{
double mapping_weight = retargeting.get_translation_mapping_weight(mapping_nr);
fs_joint_translation_local_from_t_pose += state.bone_translation(src_index) * (float)mapping_weight;
value_count_trans++;
}
else
{
Debug.Log("Could not find source index for '" + mapping_src + "'");
}
}
// Convert translation to global translation
//Vector3 unity_joint_translation_local = fs_joint_translation_local_from_t_pose + tpose_translation;
Vector3 unity_joint_translation_local =
Quaternion.Inverse(tpose_parent_global_rotation) * fs_joint_translation_local_from_t_pose
+ tpose_translation;
// Sum the rotations to apply
int value_count_rot = 0;
for (int mapping_nr = 0; mapping_nr < retargeting.get_number_of_rotation_mappings(); mapping_nr++)
{
string mapping_target = retargeting.get_rotation_mapping_destination(mapping_nr);
if (!mapping_target.Equals(tpose_joint.transformName))
{
continue;
}
string mapping_src = retargeting.get_rotation_mapping_source(mapping_nr);
int src_index = rig.bone_index(mapping_src);
if (src_index >= 0)
{
double mapping_weight = retargeting.get_rotation_mapping_weight(mapping_nr);
// use slerp for weighting
fs_joint_rotation_local_from_t_pose = Quaternion.Slerp(Quaternion.identity, state.bone_rotation(src_index), (float)mapping_weight);
// TODO: here we should accumulate if there are more than one sources (like with blendshapes)
value_count_rot++;
}
else
{
Debug.Log("Could not find source rotation for '" + mapping_src);
}
}
// Convert to local unity rotation
Quaternion unity_joint_rotation_local =
Quaternion.Inverse(tpose_parent_global_rotation)
* fs_joint_rotation_local_from_t_pose
* tpose_parent_global_rotation
* tpose_local_rotation; // The initial local rotation;
if (value_count_trans > 0 || value_count_rot > 0)
{
values[target_nr] = new TransformationValue(unity_joint_rotation_local, unity_joint_translation_local);
}
}
return(values);
}
/// <summary>
/// Applies the joint transformations given an influence factor
/// </summary>
/// <returns><c>true</c>, if transformations could be applied, <c>false</c> otherwise.</returns>
/// <param name="transformationsToSet">The set of transformations to apply</param>
/// <param name="influence">The factor to apply the transformations. 0.0 means that they are not used at all and the current
/// animations are not changed. 1.0 means that they are fully used.</param>
protected bool ApplyTransformations(TransformationValue [] transformationsToSet, float influence) {
if (transformationsToSet.Length != m_GameObjectTransformations.Count) {
return false;
}
for (int index = 0; index < m_GameObjectTransformations.Count; index++) {
// Apply the value for this target
if (transformationsToSet[index] != null) {
TransformationInformation joint = m_GameObjectTransformations[index] as TransformationInformation;
joint.transform.localRotation = Quaternion.Slerp(joint.transform.localRotation,
transformationsToSet[index].m_rotation, influence);
joint.transform.localPosition = (1.0f - influence) * joint.transform.localPosition +
influence * transformationsToSet[index].m_translation;
}
}
return true;
}
