llkeyframemotion.cpp

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//-----------------------------------------------------------------------------
// Header Files
//-----------------------------------------------------------------------------
#include "linden_common.h"

#include "llmath.h"
#include "llanimationstates.h"
#include "llassetstorage.h"
#include "lldatapacker.h"
#include "llcharacter.h"
#include "llcriticaldamp.h"
#include "lldir.h"
#include "llendianswizzle.h"
#include "llkeyframemotion.h"
#include "llquantize.h"
#include "llvfile.h"
#include "m3math.h"
#include "message.h"

//-----------------------------------------------------------------------------
// Static Definitions
//-----------------------------------------------------------------------------
LLVFS*                          LLKeyframeMotion::sVFS = NULL;
LLKeyframeDataCache::keyframe_data_map_t        LLKeyframeDataCache::sKeyframeDataMap;

//-----------------------------------------------------------------------------
// Globals
//-----------------------------------------------------------------------------
static F32 JOINT_LENGTH_K = 0.7f;
static S32 MAX_ITERATIONS = 20;
static S32 MIN_ITERATIONS = 1;
static S32 MIN_ITERATION_COUNT = 2;
static F32 MAX_PIXEL_AREA_CONSTRAINTS = 80000.f;
static F32 MIN_PIXEL_AREA_CONSTRAINTS = 1000.f;
static F32 MIN_ACCELERATION_SQUARED = 0.0005f * 0.0005f;

static F32 MAX_CONSTRAINTS = 10;

//-----------------------------------------------------------------------------
// JointMotionList
//-----------------------------------------------------------------------------
LLKeyframeMotion::JointMotionList::JointMotionList()
{
}

LLKeyframeMotion::JointMotionList::~JointMotionList()
{
        for_each(mConstraints.begin(), mConstraints.end(), DeletePointer());
        for_each(mJointMotionArray.begin(), mJointMotionArray.end(), DeletePointer());
}

U32 LLKeyframeMotion::JointMotionList::dumpDiagInfo()
{
        S32     total_size = sizeof(JointMotionList);

        for (U32 i = 0; i < getNumJointMotions(); i++)
        {
                LLKeyframeMotion::JointMotion* joint_motion_p = mJointMotionArray[i];

                llinfos << "\tJoint " << joint_motion_p->mJointName << llendl;
                if (joint_motion_p->mUsage & LLJointState::SCALE)
                {
                        llinfos << "\t" << joint_motion_p->mScaleCurve.mNumKeys << " scale keys at " 
                        << joint_motion_p->mScaleCurve.mNumKeys * sizeof(ScaleKey) << " bytes" << llendl;

                        total_size += joint_motion_p->mScaleCurve.mNumKeys * sizeof(ScaleKey);
                }
                if (joint_motion_p->mUsage & LLJointState::ROT)
                {
                        llinfos << "\t" << joint_motion_p->mRotationCurve.mNumKeys << " rotation keys at " 
                        << joint_motion_p->mRotationCurve.mNumKeys * sizeof(RotationKey) << " bytes" << llendl;

                        total_size += joint_motion_p->mRotationCurve.mNumKeys * sizeof(RotationKey);
                }
                if (joint_motion_p->mUsage & LLJointState::POS)
                {
                        llinfos << "\t" << joint_motion_p->mPositionCurve.mNumKeys << " position keys at " 
                        << joint_motion_p->mPositionCurve.mNumKeys * sizeof(PositionKey) << " bytes" << llendl;

                        total_size += joint_motion_p->mPositionCurve.mNumKeys * sizeof(PositionKey);
                }
        }
        llinfos << "Size: " << total_size << " bytes" << llendl;

        return total_size;
}

//-----------------------------------------------------------------------------
//-----------------------------------------------------------------------------
// ****Curve classes
//-----------------------------------------------------------------------------
//-----------------------------------------------------------------------------


//-----------------------------------------------------------------------------
// ScaleCurve::ScaleCurve()
//-----------------------------------------------------------------------------
LLKeyframeMotion::ScaleCurve::ScaleCurve()
{
        mInterpolationType = LLKeyframeMotion::IT_LINEAR;
        mNumKeys = 0;
}

//-----------------------------------------------------------------------------
// ScaleCurve::~ScaleCurve()
//-----------------------------------------------------------------------------
LLKeyframeMotion::ScaleCurve::~ScaleCurve() 
{
        mKeys.clear();
        mNumKeys = 0;
}

//-----------------------------------------------------------------------------
// getValue()
//-----------------------------------------------------------------------------
LLVector3 LLKeyframeMotion::ScaleCurve::getValue(F32 time, F32 duration)
{
        LLVector3 value;

        if (mKeys.empty())
        {
                value.clearVec();
                return value;
        }
        
        key_map_t::iterator right = mKeys.lower_bound(time);
        if (right == mKeys.end())
        {
                // Past last key
                --right;
                value = right->second.mScale;
        }
        else if (right == mKeys.begin() || right->first == time)
        {
                // Before first key or exactly on a key
                value = right->second.mScale;
        }
        else
        {
                // Between two keys
                key_map_t::iterator left = right; --left;
                F32 index_before = left->first;
                F32 index_after = right->first;
                ScaleKey& scale_before = left->second;
                ScaleKey& scale_after = right->second;
                if (right == mKeys.end())
                {
                        scale_after = mLoopInKey;
                        index_after = duration;
                }

                F32 u = (time - index_before) / (index_after - index_before);
                value = interp(u, scale_before, scale_after);
        }
        return value;
}

//-----------------------------------------------------------------------------
// interp()
//-----------------------------------------------------------------------------
LLVector3 LLKeyframeMotion::ScaleCurve::interp(F32 u, ScaleKey& before, ScaleKey& after)
{
        switch (mInterpolationType)
        {
        case IT_STEP:
                return before.mScale;

        default:
        case IT_LINEAR:
        case IT_SPLINE:
                return lerp(before.mScale, after.mScale, u);
        }
}

//-----------------------------------------------------------------------------
// RotationCurve::RotationCurve()
//-----------------------------------------------------------------------------
LLKeyframeMotion::RotationCurve::RotationCurve()
{
        mInterpolationType = LLKeyframeMotion::IT_LINEAR;
        mNumKeys = 0;
}

//-----------------------------------------------------------------------------
// RotationCurve::~RotationCurve()
//-----------------------------------------------------------------------------
LLKeyframeMotion::RotationCurve::~RotationCurve()
{
        mKeys.clear();
        mNumKeys = 0;
}

//-----------------------------------------------------------------------------
// RotationCurve::getValue()
//-----------------------------------------------------------------------------
LLQuaternion LLKeyframeMotion::RotationCurve::getValue(F32 time, F32 duration)
{
        LLQuaternion value;

        if (mKeys.empty())
        {
                value = LLQuaternion::DEFAULT;
                return value;
        }
        
        key_map_t::iterator right = mKeys.lower_bound(time);
        if (right == mKeys.end())
        {
                // Past last key
                --right;
                value = right->second.mRotation;
        }
        else if (right == mKeys.begin() || right->first == time)
        {
                // Before first key or exactly on a key
                value = right->second.mRotation;
        }
        else
        {
                // Between two keys
                key_map_t::iterator left = right; --left;
                F32 index_before = left->first;
                F32 index_after = right->first;
                RotationKey& rot_before = left->second;
                RotationKey& rot_after = right->second;
                if (right == mKeys.end())
                {
                        rot_after = mLoopInKey;
                        index_after = duration;
                }

                F32 u = (time - index_before) / (index_after - index_before);
                value = interp(u, rot_before, rot_after);
        }
        return value;
}

//-----------------------------------------------------------------------------
// interp()
//-----------------------------------------------------------------------------
LLQuaternion LLKeyframeMotion::RotationCurve::interp(F32 u, RotationKey& before, RotationKey& after)
{
        switch (mInterpolationType)
        {
        case IT_STEP:
                return before.mRotation;

        default:
        case IT_LINEAR:
        case IT_SPLINE:
                return nlerp(u, before.mRotation, after.mRotation);
        }
}


//-----------------------------------------------------------------------------
// PositionCurve::PositionCurve()
//-----------------------------------------------------------------------------
LLKeyframeMotion::PositionCurve::PositionCurve()
{
        mInterpolationType = LLKeyframeMotion::IT_LINEAR;
        mNumKeys = 0;
}

//-----------------------------------------------------------------------------
// PositionCurve::~PositionCurve()
//-----------------------------------------------------------------------------
LLKeyframeMotion::PositionCurve::~PositionCurve()
{
        mKeys.clear();
        mNumKeys = 0;
}

//-----------------------------------------------------------------------------
// PositionCurve::getValue()
//-----------------------------------------------------------------------------
LLVector3 LLKeyframeMotion::PositionCurve::getValue(F32 time, F32 duration)
{
        LLVector3 value;

        if (mKeys.empty())
        {
                value.clearVec();
                return value;
        }
        
        key_map_t::iterator right = mKeys.lower_bound(time);
        if (right == mKeys.end())
        {
                // Past last key
                --right;
                value = right->second.mPosition;
        }
        else if (right == mKeys.begin() || right->first == time)
        {
                // Before first key or exactly on a key
                value = right->second.mPosition;
        }
        else
        {
                // Between two keys
                key_map_t::iterator left = right; --left;
                F32 index_before = left->first;
                F32 index_after = right->first;
                PositionKey& pos_before = left->second;
                PositionKey& pos_after = right->second;
                if (right == mKeys.end())
                {
                        pos_after = mLoopInKey;
                        index_after = duration;
                }

                F32 u = (time - index_before) / (index_after - index_before);
                value = interp(u, pos_before, pos_after);
        }

        llassert(value.isFinite());
        
        return value;
}

//-----------------------------------------------------------------------------
// interp()
//-----------------------------------------------------------------------------
LLVector3 LLKeyframeMotion::PositionCurve::interp(F32 u, PositionKey& before, PositionKey& after)
{
        switch (mInterpolationType)
        {
        case IT_STEP:
                return before.mPosition;
        default:
        case IT_LINEAR:
        case IT_SPLINE:
                return lerp(before.mPosition, after.mPosition, u);
        }
}


//-----------------------------------------------------------------------------
//-----------------------------------------------------------------------------
// JointMotion class
//-----------------------------------------------------------------------------
//-----------------------------------------------------------------------------

//-----------------------------------------------------------------------------
// JointMotion::update()
//-----------------------------------------------------------------------------
void LLKeyframeMotion::JointMotion::update(LLJointState* joint_state, F32 time, F32 duration)
{
        // this value being 0 is the cause of https://jira.lindenlab.com/browse/SL-22678 but I haven't 
        // managed to get a stack to see how it got here. Testing for 0 here will stop the crash.
        if ( joint_state == NULL )
        {
                return;
        }

        U32 usage = joint_state->getUsage();

        //-------------------------------------------------------------------------
        // update scale component of joint state
        //-------------------------------------------------------------------------
        if ((usage & LLJointState::SCALE) && mScaleCurve.mNumKeys)
        {
                joint_state->setScale( mScaleCurve.getValue( time, duration ) );
        }

        //-------------------------------------------------------------------------
        // update rotation component of joint state
        //-------------------------------------------------------------------------
        if ((usage & LLJointState::ROT) && mRotationCurve.mNumKeys)
        {
                joint_state->setRotation( mRotationCurve.getValue( time, duration ) );
        }

        //-------------------------------------------------------------------------
        // update position component of joint state
        //-------------------------------------------------------------------------
        if ((usage & LLJointState::POS) && mPositionCurve.mNumKeys)
        {
                joint_state->setPosition( mPositionCurve.getValue( time, duration ) );
        }
}


//-----------------------------------------------------------------------------
//-----------------------------------------------------------------------------
// LLKeyframeMotion class
//-----------------------------------------------------------------------------
//-----------------------------------------------------------------------------

//-----------------------------------------------------------------------------
// LLKeyframeMotion()
// Class Constructor
//-----------------------------------------------------------------------------
LLKeyframeMotion::LLKeyframeMotion(const LLUUID &id) 
        : LLMotion(id),
                mJointMotionList(NULL),
                mPelvisp(NULL),
                mLastSkeletonSerialNum(0),
                mLastUpdateTime(0.f),
                mLastLoopedTime(0.f),
                mAssetStatus(ASSET_UNDEFINED)
{

}


//-----------------------------------------------------------------------------
// ~LLKeyframeMotion()
// Class Destructor
//-----------------------------------------------------------------------------
LLKeyframeMotion::~LLKeyframeMotion()
{
        for_each(mConstraints.begin(), mConstraints.end(), DeletePointer());
}

//-----------------------------------------------------------------------------
// create()
//-----------------------------------------------------------------------------
LLMotion *LLKeyframeMotion::create(const LLUUID &id)
{
        return new LLKeyframeMotion(id);
}

//-----------------------------------------------------------------------------
// getJointState()
//-----------------------------------------------------------------------------
LLPointer<LLJointState>& LLKeyframeMotion::getJointState(U32 index)
{
        llassert_always (index < (S32)mJointStates.size());
        return mJointStates[index];
}

//-----------------------------------------------------------------------------
// getJoin()
//-----------------------------------------------------------------------------
LLJoint* LLKeyframeMotion::getJoint(U32 index)
{
        llassert_always (index < (S32)mJointStates.size());
        LLJoint* joint = mJointStates[index]->getJoint();
        llassert_always (joint);
        return joint;
}

//-----------------------------------------------------------------------------
// LLKeyframeMotion::onInitialize(LLCharacter *character)
//-----------------------------------------------------------------------------
LLMotion::LLMotionInitStatus LLKeyframeMotion::onInitialize(LLCharacter *character)
{
        mCharacter = character;
        
        LLUUID* character_id;

        // asset already loaded?
        switch(mAssetStatus)
        {
        case ASSET_NEEDS_FETCH:
                // request asset
                mAssetStatus = ASSET_FETCHED;

                character_id = new LLUUID(mCharacter->getID());
                gAssetStorage->getAssetData(mID,
                                                LLAssetType::AT_ANIMATION,
                                                onLoadComplete,
                                                (void *)character_id,
                                                FALSE);

                return STATUS_HOLD;
        case ASSET_FETCHED:
                return STATUS_HOLD;
        case ASSET_FETCH_FAILED:
                return STATUS_FAILURE;
        case ASSET_LOADED:
                return STATUS_SUCCESS;
        default:
                // we don't know what state the asset is in yet, so keep going
                // check keyframe cache first then static vfs then asset request
                break;
        }

        LLKeyframeMotion::JointMotionList* joint_motion_list = LLKeyframeDataCache::getKeyframeData(getID());

        if(joint_motion_list)
        {
                // motion already existed in cache, so grab it
                mJointMotionList = joint_motion_list;

                mJointStates.reserve(mJointMotionList->getNumJointMotions());
                
                // don't forget to allocate joint states
                // set up joint states to point to character joints
                for(U32 i = 0; i < mJointMotionList->getNumJointMotions(); i++)
                {
                        JointMotion* joint_motion = mJointMotionList->getJointMotion(i);
                        if (LLJoint *joint = mCharacter->getJoint(joint_motion->mJointName))
                        {
                                LLPointer<LLJointState> joint_state = new LLJointState;
                                mJointStates.push_back(joint_state);
                                joint_state->setJoint(joint);
                                joint_state->setUsage(joint_motion->mUsage);
                                joint_state->setPriority(joint_motion->mPriority);
                        }
                        else
                        {
                                // add dummy joint state with no associated joint
                                mJointStates.push_back(new LLJointState);
                        }
                }
                mAssetStatus = ASSET_LOADED;
                setupPose();
                return STATUS_SUCCESS;
        }

        //-------------------------------------------------------------------------
        // Load named file by concatenating the character prefix with the motion name.
        // Load data into a buffer to be parsed.
        //-------------------------------------------------------------------------
        U8 *anim_data;
        S32 anim_file_size;

        if (!sVFS)
        {
                llerrs << "Must call LLKeyframeMotion::setVFS() first before loading a keyframe file!" << llendl;
        }

        BOOL success = FALSE;
        LLVFile* anim_file = new LLVFile(sVFS, mID, LLAssetType::AT_ANIMATION);
        if (!anim_file || !anim_file->getSize())
        {
                delete anim_file;
                anim_file = NULL;
                
                // request asset over network on next call to load
                mAssetStatus = ASSET_NEEDS_FETCH;

                return STATUS_HOLD;
        }
        else
        {
                anim_file_size = anim_file->getSize();
                anim_data = new U8[anim_file_size];
                success = anim_file->read(anim_data, anim_file_size);   /*Flawfinder: ignore*/
                delete anim_file;
                anim_file = NULL;
        }

        if (!success)
        {
                llwarns << "Can't open animation file " << mID << llendl;
                mAssetStatus = ASSET_FETCH_FAILED;
                return STATUS_FAILURE;
        }

        lldebugs << "Loading keyframe data for: " << getName() << ":" << getID() << " (" << anim_file_size << " bytes)" << llendl;

        LLDataPackerBinaryBuffer dp(anim_data, anim_file_size);

        if (!deserialize(dp))
        {
                llwarns << "Failed to decode asset for animation " << getName() << ":" << getID() << llendl;
                mAssetStatus = ASSET_FETCH_FAILED;
                return STATUS_FAILURE;
        }

        delete []anim_data;

        mAssetStatus = ASSET_LOADED;
        return STATUS_SUCCESS;
}

//-----------------------------------------------------------------------------
// setupPose()
//-----------------------------------------------------------------------------
BOOL LLKeyframeMotion::setupPose()
{
        // add all valid joint states to the pose
        for (U32 jm=0; jm<mJointMotionList->getNumJointMotions(); jm++)
        {
                LLPointer<LLJointState> joint_state = getJointState(jm);
                if ( joint_state->getJoint() )
                {
                        addJointState( joint_state );
                }
        }

        // initialize joint constraints
        for (JointMotionList::constraint_list_t::iterator iter = mJointMotionList->mConstraints.begin();
                 iter != mJointMotionList->mConstraints.end(); ++iter)
        {
                JointConstraintSharedData* shared_constraintp = *iter;
                JointConstraint* constraintp = new JointConstraint(shared_constraintp);
                initializeConstraint(constraintp);
                mConstraints.push_front(constraintp);
        }

        if (mJointMotionList->mConstraints.size())
        {
                mPelvisp = mCharacter->getJoint("mPelvis");
                if (!mPelvisp)
                {
                        return FALSE;
                }
        }

        // setup loop keys
        setLoopIn(mJointMotionList->mLoopInPoint);
        setLoopOut(mJointMotionList->mLoopOutPoint);

        return TRUE;
}

//-----------------------------------------------------------------------------
// LLKeyframeMotion::onActivate()
//-----------------------------------------------------------------------------
BOOL LLKeyframeMotion::onActivate()
{
        // If the keyframe anim has an associated emote, trigger it. 
        if( mEmoteName.length() > 0 )
        {
                mCharacter->startMotion( gAnimLibrary.stringToAnimState(mEmoteName.c_str()) );
        }

        mLastLoopedTime = 0.f;

        return TRUE;
}

//-----------------------------------------------------------------------------
// LLKeyframeMotion::onUpdate()
//-----------------------------------------------------------------------------
BOOL LLKeyframeMotion::onUpdate(F32 time, U8* joint_mask)
{
        llassert(time >= 0.f);

        if (mJointMotionList->mLoop)
        {
                if (mJointMotionList->mDuration == 0.0f)
                {
                        time = 0.f;
                        mLastLoopedTime = 0.0f;
                }
                else if (mStopped)
                {
                        mLastLoopedTime = llmin(mJointMotionList->mDuration, mLastLoopedTime + time - mLastUpdateTime);
                }
                else if (time > mJointMotionList->mLoopOutPoint)
                {
                        if ((mJointMotionList->mLoopOutPoint - mJointMotionList->mLoopInPoint) == 0.f)
                        {
                                mLastLoopedTime = mJointMotionList->mLoopOutPoint;
                        }
                        else
                        {
                                mLastLoopedTime = mJointMotionList->mLoopInPoint + 
                                        fmod(time - mJointMotionList->mLoopOutPoint, 
                                        mJointMotionList->mLoopOutPoint - mJointMotionList->mLoopInPoint);
                        }
                }
                else
                {
                        mLastLoopedTime = time;
                }
        }
        else
        {
                mLastLoopedTime = time;
        }

        applyKeyframes(mLastLoopedTime);

        applyConstraints(mLastLoopedTime, joint_mask);

        mLastUpdateTime = time;

        return mLastLoopedTime <= mJointMotionList->mDuration;
}

//-----------------------------------------------------------------------------
// applyKeyframes()
//-----------------------------------------------------------------------------
void LLKeyframeMotion::applyKeyframes(F32 time)
{
        llassert_always (mJointMotionList->getNumJointMotions() <= mJointStates.size());
        for (U32 i=0; i<mJointMotionList->getNumJointMotions(); i++)
        {
                mJointMotionList->getJointMotion(i)->update(mJointStates[i],
                                                                                                          time, 
                                                                                                          mJointMotionList->mDuration );
        }

        LLJoint::JointPriority* pose_priority = (LLJoint::JointPriority* )mCharacter->getAnimationData("Hand Pose Priority");
        if (pose_priority)
        {
                if (mJointMotionList->mMaxPriority >= *pose_priority)
                {
                        mCharacter->setAnimationData("Hand Pose", &mJointMotionList->mHandPose);
                        mCharacter->setAnimationData("Hand Pose Priority", &mJointMotionList->mMaxPriority);
                }
        }
        else
        {
                mCharacter->setAnimationData("Hand Pose", &mJointMotionList->mHandPose);
                mCharacter->setAnimationData("Hand Pose Priority", &mJointMotionList->mMaxPriority);
        }
}

//-----------------------------------------------------------------------------
// applyConstraints()
//-----------------------------------------------------------------------------
void LLKeyframeMotion::applyConstraints(F32 time, U8* joint_mask)
{
        //TODO: investigate replacing spring simulation with critically damped motion

        // re-init constraints if skeleton has changed
        if (mCharacter->getSkeletonSerialNum() != mLastSkeletonSerialNum)
        {
                mLastSkeletonSerialNum = mCharacter->getSkeletonSerialNum();
                for (constraint_list_t::iterator iter = mConstraints.begin();
                         iter != mConstraints.end(); ++iter)
                {
                        JointConstraint* constraintp = *iter;
                        initializeConstraint(constraintp);
                }
        }

        // apply constraints
        for (constraint_list_t::iterator iter = mConstraints.begin();
                 iter != mConstraints.end(); ++iter)
        {
                JointConstraint* constraintp = *iter;
                applyConstraint(constraintp, time, joint_mask);
        }
}

//-----------------------------------------------------------------------------
// LLKeyframeMotion::onDeactivate()
//-----------------------------------------------------------------------------
void LLKeyframeMotion::onDeactivate()
{
        for (constraint_list_t::iterator iter = mConstraints.begin();
                 iter != mConstraints.end(); ++iter)
        {
                JointConstraint* constraintp = *iter;
                deactivateConstraint(constraintp);
        }
}

//-----------------------------------------------------------------------------
// setStopTime()
//-----------------------------------------------------------------------------
// time is in seconds since character creation
void LLKeyframeMotion::setStopTime(F32 time)
{
        LLMotion::setStopTime(time);

        if (mJointMotionList->mLoop && mJointMotionList->mLoopOutPoint != mJointMotionList->mDuration)
        {
                F32 start_loop_time = mActivationTimestamp + mJointMotionList->mLoopInPoint;
                F32 loop_fraction_time;
                if (mJointMotionList->mLoopOutPoint == mJointMotionList->mLoopInPoint)
                {
                        loop_fraction_time = 0.f;
                }
                else
                {
                        loop_fraction_time = fmod(time - start_loop_time, 
                                mJointMotionList->mLoopOutPoint - mJointMotionList->mLoopInPoint);
                }
                mStopTimestamp = llmax(time, 
                        (time - loop_fraction_time) + (mJointMotionList->mDuration - mJointMotionList->mLoopInPoint) - getEaseOutDuration());
        }
}

//-----------------------------------------------------------------------------
// initializeConstraint()
//-----------------------------------------------------------------------------
void LLKeyframeMotion::initializeConstraint(JointConstraint* constraint)
{
        JointConstraintSharedData *shared_data = constraint->mSharedData;

        S32 joint_num;
        LLVector3 source_pos = mCharacter->getVolumePos(shared_data->mSourceConstraintVolume, shared_data->mSourceConstraintOffset);
        LLJoint* cur_joint = getJoint(shared_data->mJointStateIndices[0]);

        F32 source_pos_offset = dist_vec(source_pos, cur_joint->getWorldPosition());

        constraint->mTotalLength = constraint->mJointLengths[0] = dist_vec(cur_joint->getParent()->getWorldPosition(), source_pos);
        
        // grab joint lengths
        for (joint_num = 1; joint_num < shared_data->mChainLength; joint_num++)
        {
                cur_joint = getJointState(shared_data->mJointStateIndices[joint_num])->getJoint();
                if (!cur_joint)
                {
                        return;
                }
                constraint->mJointLengths[joint_num] = dist_vec(cur_joint->getWorldPosition(), cur_joint->getParent()->getWorldPosition());
                constraint->mTotalLength += constraint->mJointLengths[joint_num];
        }

        // store fraction of total chain length so we know how to shear the entire chain towards the goal position
        for (joint_num = 1; joint_num < shared_data->mChainLength; joint_num++)
        {
                constraint->mJointLengthFractions[joint_num] = constraint->mJointLengths[joint_num] / constraint->mTotalLength;
        }

        // add last step in chain, from final joint to constraint position
        constraint->mTotalLength += source_pos_offset;

        constraint->mSourceVolume = mCharacter->findCollisionVolume(shared_data->mSourceConstraintVolume);
        constraint->mTargetVolume = mCharacter->findCollisionVolume(shared_data->mTargetConstraintVolume);
}

//-----------------------------------------------------------------------------
// activateConstraint()
//-----------------------------------------------------------------------------
void LLKeyframeMotion::activateConstraint(JointConstraint* constraint)
{
        JointConstraintSharedData *shared_data = constraint->mSharedData;
        constraint->mActive = TRUE;
        S32 joint_num;

        // grab ground position if we need to
        if (shared_data->mConstraintTargetType == TYPE_GROUND)
        {
                LLVector3 source_pos = mCharacter->getVolumePos(shared_data->mSourceConstraintVolume, shared_data->mSourceConstraintOffset);
                LLVector3 ground_pos_agent;
                mCharacter->getGround(source_pos, ground_pos_agent, constraint->mGroundNorm);
                constraint->mGroundPos = mCharacter->getPosGlobalFromAgent(ground_pos_agent + shared_data->mTargetConstraintOffset);
        }

        for (joint_num = 1; joint_num < shared_data->mChainLength; joint_num++)
        {
                LLJoint* cur_joint = getJoint(shared_data->mJointStateIndices[joint_num]);
                constraint->mPositions[joint_num] = (cur_joint->getWorldPosition() - mPelvisp->getWorldPosition()) * ~mPelvisp->getWorldRotation();
        }

        constraint->mWeight = 1.f;
}

//-----------------------------------------------------------------------------
// deactivateConstraint()
//-----------------------------------------------------------------------------
void LLKeyframeMotion::deactivateConstraint(JointConstraint *constraintp)
{
        if (constraintp->mSourceVolume)
        {
                constraintp->mSourceVolume->mUpdateXform = FALSE;
        }

        if (!constraintp->mSharedData->mConstraintTargetType == TYPE_GROUND)
        {
                if (constraintp->mTargetVolume)
                {
                        constraintp->mTargetVolume->mUpdateXform = FALSE;
                }
        }
        constraintp->mActive = FALSE;
}

//-----------------------------------------------------------------------------
// applyConstraint()
//-----------------------------------------------------------------------------
void LLKeyframeMotion::applyConstraint(JointConstraint* constraint, F32 time, U8* joint_mask)
{
        JointConstraintSharedData *shared_data = constraint->mSharedData;
        if (!shared_data) return;

        LLVector3               positions[MAX_CHAIN_LENGTH];
        const F32*              joint_lengths = constraint->mJointLengths;
        LLVector3               velocities[MAX_CHAIN_LENGTH - 1];
        LLQuaternion    old_rots[MAX_CHAIN_LENGTH];
        S32                             joint_num;

        if (time < shared_data->mEaseInStartTime)
        {
                return;
        }

        if (time > shared_data->mEaseOutStopTime)
        {
                if (constraint->mActive)
                {
                        deactivateConstraint(constraint);
                }
                return;
        }

        if (!constraint->mActive || time < shared_data->mEaseInStopTime)
        {
                activateConstraint(constraint);
        }

        LLJoint* root_joint = getJoint(shared_data->mJointStateIndices[shared_data->mChainLength]);
        LLVector3 root_pos = root_joint->getWorldPosition();
//      LLQuaternion root_rot = 
        root_joint->getParent()->getWorldRotation();
//      LLQuaternion inv_root_rot = ~root_rot;

//      LLVector3 current_source_pos = mCharacter->getVolumePos(shared_data->mSourceConstraintVolume, shared_data->mSourceConstraintOffset);

        //apply underlying keyframe animation to get nominal "kinematic" joint positions
        for (joint_num = 0; joint_num <= shared_data->mChainLength; joint_num++)
        {
                LLJoint* cur_joint = getJoint(shared_data->mJointStateIndices[joint_num]);
                if (joint_mask[cur_joint->getJointNum()] >= (0xff >> (7 - getPriority())))
                {
                        // skip constraint
                        return;
                }
                old_rots[joint_num] = cur_joint->getRotation();
                cur_joint->setRotation(getJointState(shared_data->mJointStateIndices[joint_num])->getRotation());
        }


        LLVector3 keyframe_source_pos = mCharacter->getVolumePos(shared_data->mSourceConstraintVolume, shared_data->mSourceConstraintOffset);
        LLVector3 target_pos;

        switch(shared_data->mConstraintTargetType)
        {
        case TYPE_GROUND:
                target_pos = mCharacter->getPosAgentFromGlobal(constraint->mGroundPos);
//              llinfos << "Target Pos " << constraint->mGroundPos << " on " << mCharacter->findCollisionVolume(shared_data->mSourceConstraintVolume)->getName() << llendl;
                break;
        case TYPE_BODY:
                target_pos = mCharacter->getVolumePos(shared_data->mTargetConstraintVolume, shared_data->mTargetConstraintOffset);
                break;
        default:
                break;
        }
        
        LLVector3 norm;
        LLJoint *source_jointp = NULL;
        LLJoint *target_jointp = NULL;

        if (shared_data->mConstraintType == TYPE_PLANE)
        {
                switch(shared_data->mConstraintTargetType)
                {
                case TYPE_GROUND:
                        norm = constraint->mGroundNorm;
                        break;
                case TYPE_BODY:
                        target_jointp = mCharacter->findCollisionVolume(shared_data->mTargetConstraintVolume);
                        if (target_jointp)
                        {
                                // *FIX: do proper normal calculation for stretched
                                // spheres (inverse transpose)
                                norm = target_pos - target_jointp->getWorldPosition();
                        }

                        if (norm.isExactlyZero())
                        {
                                source_jointp = mCharacter->findCollisionVolume(shared_data->mSourceConstraintVolume);
                                norm = -1.f * shared_data->mSourceConstraintOffset;
                                if (source_jointp)      
                                {
                                        norm = norm * source_jointp->getWorldRotation();
                                }
                        }
                        norm.normVec();
                        break;
                default:
                        norm.clearVec();
                        break;
                }
                
                target_pos = keyframe_source_pos + (norm * ((target_pos - keyframe_source_pos) * norm));
        }

        if (constraint->mSharedData->mChainLength != 0 &&
                dist_vec_squared(root_pos, target_pos) * 0.95f > constraint->mTotalLength * constraint->mTotalLength)
        {
                constraint->mWeight = lerp(constraint->mWeight, 0.f, LLCriticalDamp::getInterpolant(0.1f));
        }
        else
        {
                constraint->mWeight = lerp(constraint->mWeight, 1.f, LLCriticalDamp::getInterpolant(0.3f));
        }

        F32 weight = constraint->mWeight * ((shared_data->mEaseOutStopTime == 0.f) ? 1.f : 
                llmin(clamp_rescale(time, shared_data->mEaseInStartTime, shared_data->mEaseInStopTime, 0.f, 1.f), 
                clamp_rescale(time, shared_data->mEaseOutStartTime, shared_data->mEaseOutStopTime, 1.f, 0.f)));

        LLVector3 source_to_target = target_pos - keyframe_source_pos;
        
        S32 max_iteration_count = llround(clamp_rescale(
                                                                                  mCharacter->getPixelArea(),
                                                                                  MAX_PIXEL_AREA_CONSTRAINTS,
                                                                                  MIN_PIXEL_AREA_CONSTRAINTS,
                                                                                  (F32)MAX_ITERATIONS,
                                                                                  (F32)MIN_ITERATIONS));

        if (shared_data->mChainLength)
        {
                LLQuaternion end_rot = getJoint(shared_data->mJointStateIndices[0])->getWorldRotation();

                // slam start and end of chain to the proper positions (rest of chain stays put)
                positions[0] = lerp(keyframe_source_pos, target_pos, weight);
                positions[shared_data->mChainLength] = root_pos;

                // grab keyframe-specified positions of joints  
                for (joint_num = 1; joint_num < shared_data->mChainLength; joint_num++)
                {
                        LLVector3 kinematic_position = getJoint(shared_data->mJointStateIndices[joint_num])->getWorldPosition() + 
                                (source_to_target * constraint->mJointLengthFractions[joint_num]);

                        // convert intermediate joint positions to world coordinates
                        positions[joint_num] = ( constraint->mPositions[joint_num] * mPelvisp->getWorldRotation()) + mPelvisp->getWorldPosition();
                        F32 time_constant = 1.f / clamp_rescale(constraint->mFixupDistanceRMS, 0.f, 0.5f, 0.2f, 8.f);
//                      llinfos << "Interpolant " << LLCriticalDamp::getInterpolant(time_constant, FALSE) << " and fixup distance " << constraint->mFixupDistanceRMS << " on " << mCharacter->findCollisionVolume(shared_data->mSourceConstraintVolume)->getName() << llendl;
                        positions[joint_num] = lerp(positions[joint_num], kinematic_position, 
                                LLCriticalDamp::getInterpolant(time_constant, FALSE));
                }

                S32 iteration_count;
                for (iteration_count = 0; iteration_count < max_iteration_count; iteration_count++)
                {
                        S32 num_joints_finished = 0;
                        for (joint_num = 1; joint_num < shared_data->mChainLength; joint_num++)
                        {
                                // constraint to child
                                LLVector3 acceleration = (positions[joint_num - 1] - positions[joint_num]) * 
                                        (dist_vec(positions[joint_num], positions[joint_num - 1]) - joint_lengths[joint_num - 1]) * JOINT_LENGTH_K;
                                // constraint to parent
                                acceleration  += (positions[joint_num + 1] - positions[joint_num]) * 
                                        (dist_vec(positions[joint_num + 1], positions[joint_num]) - joint_lengths[joint_num]) * JOINT_LENGTH_K;

                                if (acceleration.magVecSquared() < MIN_ACCELERATION_SQUARED)
                                {
                                        num_joints_finished++;
                                }

                                velocities[joint_num - 1] = velocities[joint_num - 1] * 0.7f;
                                positions[joint_num] += velocities[joint_num - 1] + (acceleration * 0.5f);
                                velocities[joint_num - 1] += acceleration;
                        }

                        if ((iteration_count >= MIN_ITERATION_COUNT) && 
                                (num_joints_finished == shared_data->mChainLength - 1))
                        {
//                              llinfos << iteration_count << " iterations on " << 
//                                      mCharacter->findCollisionVolume(shared_data->mSourceConstraintVolume)->getName() << llendl;
                                break;
                        }
                }

                for (joint_num = shared_data->mChainLength; joint_num > 0; joint_num--)
                {
                        LLJoint* cur_joint = getJoint(shared_data->mJointStateIndices[joint_num]);
                        LLJoint* child_joint = getJoint(shared_data->mJointStateIndices[joint_num - 1]);
                        LLQuaternion parent_rot = cur_joint->getParent()->getWorldRotation();

                        LLQuaternion cur_rot = cur_joint->getWorldRotation();
                        LLQuaternion fixup_rot;
                        
                        LLVector3 target_at = positions[joint_num - 1] - positions[joint_num];
                        LLVector3 current_at;

                        // at bottom of chain, use point on collision volume, not joint position
                        if (joint_num == 1)
                        {
                                current_at = mCharacter->getVolumePos(shared_data->mSourceConstraintVolume, shared_data->mSourceConstraintOffset) -
                                        cur_joint->getWorldPosition();
                        }
                        else
                        {
                                current_at = child_joint->getPosition() * cur_rot;
                        }
                        fixup_rot.shortestArc(current_at, target_at);

                        LLQuaternion target_rot = cur_rot * fixup_rot;
                        target_rot = target_rot * ~parent_rot;

                        if (weight != 1.f)
                        {
                                LLQuaternion cur_rot = getJointState(shared_data->mJointStateIndices[joint_num])->getRotation();
                                target_rot = nlerp(weight, cur_rot, target_rot);
                        }

                        getJointState(shared_data->mJointStateIndices[joint_num])->setRotation(target_rot);
                        cur_joint->setRotation(target_rot);
                }

                LLJoint* end_joint = getJoint(shared_data->mJointStateIndices[0]);
                LLQuaternion end_local_rot = end_rot * ~end_joint->getParent()->getWorldRotation();

                if (weight == 1.f)
                {
                        getJointState(shared_data->mJointStateIndices[0])->setRotation(end_local_rot);
                }
                else
                {
                        LLQuaternion cur_rot = getJointState(shared_data->mJointStateIndices[0])->getRotation();
                        getJointState(shared_data->mJointStateIndices[0])->setRotation(nlerp(weight, cur_rot, end_local_rot));
                }

                // save simulated positions in pelvis-space and calculate total fixup distance
                constraint->mFixupDistanceRMS = 0.f;
                F32 delta_time = llmax(0.02f, llabs(time - mLastUpdateTime));
                for (joint_num = 1; joint_num < shared_data->mChainLength; joint_num++)
                {
                        LLVector3 new_pos = (positions[joint_num] - mPelvisp->getWorldPosition()) * ~mPelvisp->getWorldRotation();
                        constraint->mFixupDistanceRMS += dist_vec_squared(new_pos, constraint->mPositions[joint_num]) / delta_time;
                        constraint->mPositions[joint_num] = new_pos;
                }
                constraint->mFixupDistanceRMS *= 1.f / (constraint->mTotalLength * (F32)(shared_data->mChainLength - 1));
                constraint->mFixupDistanceRMS = fsqrtf(constraint->mFixupDistanceRMS);

                //reset old joint rots
                for (joint_num = 0; joint_num <= shared_data->mChainLength; joint_num++)
                {
                        getJoint(shared_data->mJointStateIndices[joint_num])->setRotation(old_rots[joint_num]);
                }
        }
        // simple positional constraint (pelvis only)
        else if (getJointState(shared_data->mJointStateIndices[0])->getUsage() & LLJointState::POS)
        {
                LLVector3 delta = source_to_target * weight;
                LLPointer<LLJointState> current_joint_state = getJointState(shared_data->mJointStateIndices[0]);
                LLQuaternion parent_rot = current_joint_state->getJoint()->getParent()->getWorldRotation();
                delta = delta * ~parent_rot;
                current_joint_state->setPosition(current_joint_state->getJoint()->getPosition() + delta);
        }
}

//-----------------------------------------------------------------------------
// deserialize()
//-----------------------------------------------------------------------------
BOOL LLKeyframeMotion::deserialize(LLDataPacker& dp)
{
        BOOL old_version = FALSE;
        mJointMotionList = new LLKeyframeMotion::JointMotionList;

        //-------------------------------------------------------------------------
        // get base priority
        //-------------------------------------------------------------------------
        S32 temp_priority;
        U16 version;
        U16 sub_version;

        if (!dp.unpackU16(version, "version"))
        {
                llwarns << "can't read version number" << llendl;
                return FALSE;
        }

        if (!dp.unpackU16(sub_version, "sub_version"))
        {
                llwarns << "can't read sub version number" << llendl;
                return FALSE;
        }

        if (version == 0 && sub_version == 1)
        {
                old_version = TRUE;
        }
        else if (version != KEYFRAME_MOTION_VERSION || sub_version != KEYFRAME_MOTION_SUBVERSION)
        {
#if LL_RELEASE
                llwarns << "Bad animation version " << version << "." << sub_version << llendl;
                return FALSE;
#else
                llerrs << "Bad animation version " << version << "." << sub_version << llendl;
#endif
        }

        if (!dp.unpackS32(temp_priority, "base_priority"))
        {
                llwarns << "can't read priority" << llendl;
                return FALSE;
        }
        mJointMotionList->mBasePriority = (LLJoint::JointPriority) temp_priority;

        if (mJointMotionList->mBasePriority >= LLJoint::ADDITIVE_PRIORITY)
        {
                mJointMotionList->mBasePriority = (LLJoint::JointPriority)((int)LLJoint::ADDITIVE_PRIORITY-1);
                mJointMotionList->mMaxPriority = mJointMotionList->mBasePriority;
        }

        //-------------------------------------------------------------------------
        // get duration
        //-------------------------------------------------------------------------
        if (!dp.unpackF32(mJointMotionList->mDuration, "duration"))
        {
                llwarns << "can't read duration" << llendl;
                return FALSE;
        }

        //-------------------------------------------------------------------------
        // get emote (optional)
        //-------------------------------------------------------------------------
        if (!dp.unpackString(mEmoteName, "emote_name"))
        {
                llwarns << "can't read optional_emote_animation" << llendl;
                return FALSE;
        }

        //-------------------------------------------------------------------------
        // get loop
        //-------------------------------------------------------------------------
        if (!dp.unpackF32(mJointMotionList->mLoopInPoint, "loop_in_point"))
        {
                llwarns << "can't read loop point" << llendl;
                return FALSE;
        }

        if (!dp.unpackF32(mJointMotionList->mLoopOutPoint, "loop_out_point"))
        {
                llwarns << "can't read loop point" << llendl;
                return FALSE;
        }

        if (!dp.unpackS32(mJointMotionList->mLoop, "loop"))
        {
                llwarns << "can't read loop" << llendl;
                return FALSE;
        }

        //-------------------------------------------------------------------------
        // get easeIn and easeOut
        //-------------------------------------------------------------------------
        if (!dp.unpackF32(mJointMotionList->mEaseInDuration, "ease_in_duration"))
        {
                llwarns << "can't read easeIn" << llendl;
                return FALSE;
        }

        if (!dp.unpackF32(mJointMotionList->mEaseOutDuration, "ease_out_duration"))
        {
                llwarns << "can't read easeOut" << llendl;
                return FALSE;
        }

        //-------------------------------------------------------------------------
        // get hand pose
        //-------------------------------------------------------------------------
        U32 word;
        if (!dp.unpackU32(word, "hand_pose"))
        {
                llwarns << "can't read hand pose" << llendl;
                return FALSE;
        }
        mJointMotionList->mHandPose = (LLHandMotion::eHandPose)word;

        //-------------------------------------------------------------------------
        // get number of joint motions
        //-------------------------------------------------------------------------
        U32 num_motions = 0;
        if (!dp.unpackU32(num_motions, "num_joints"))
        {
                llwarns << "can't read number of joints" << llendl;
                return FALSE;
        }

        if (num_motions == 0)
        {
                llwarns << "no joints in animation" << llendl;
                return FALSE;
        }
        else if (num_motions > LL_CHARACTER_MAX_JOINTS)
        {
                llwarns << "too many joints in animation" << llendl;
                return FALSE;
        }

        mJointMotionList->mJointMotionArray.clear();
        mJointMotionList->mJointMotionArray.reserve(num_motions);
        mJointStates.clear();
        mJointStates.reserve(num_motions);

        //-------------------------------------------------------------------------
        // initialize joint motions
        //-------------------------------------------------------------------------

        for(U32 i=0; i<num_motions; ++i)
        {
                JointMotion* joint_motion = new JointMotion;            
                mJointMotionList->mJointMotionArray.push_back(joint_motion);
                
                std::string joint_name;
                if (!dp.unpackString(joint_name, "joint_name"))
                {
                        llwarns << "can't read joint name" << llendl;
                        return FALSE;
                }
        
                //---------------------------------------------------------------------
                // find the corresponding joint
                //---------------------------------------------------------------------
                LLJoint *joint = mCharacter->getJoint( joint_name );
                if (joint)
                {
//                      llinfos << "  joint: " << joint_name << llendl;
                }
                else
                {
                        llwarns << "joint not found: " << joint_name << llendl;
                        //return FALSE;
                }

                joint_motion->mJointName = joint_name;
                
                LLPointer<LLJointState> joint_state = new LLJointState;
                mJointStates.push_back(joint_state);
                joint_state->setJoint( joint );
                joint_state->setUsage( 0 );

                //---------------------------------------------------------------------
                // get joint priority
                //---------------------------------------------------------------------
                S32 joint_priority;
                if (!dp.unpackS32(joint_priority, "joint_priority"))
                {
                        llwarns << "can't read joint priority." << llendl;
                        return FALSE;
                }
                
                joint_motion->mPriority = (LLJoint::JointPriority)joint_priority;
                if (joint_priority != LLJoint::USE_MOTION_PRIORITY &&
                        joint_priority > mJointMotionList->mMaxPriority)
                {
                        mJointMotionList->mMaxPriority = (LLJoint::JointPriority)joint_priority;
                }

                joint_state->setPriority((LLJoint::JointPriority)joint_priority);

                //---------------------------------------------------------------------
                // scan rotation curve header
                //---------------------------------------------------------------------
                if (!dp.unpackS32(joint_motion->mRotationCurve.mNumKeys, "num_rot_keys"))
                {
                        llwarns << "can't read number of rotation keys" << llendl;
                        return FALSE;
                }

                joint_motion->mRotationCurve.mInterpolationType = IT_LINEAR;
                if (joint_motion->mRotationCurve.mNumKeys != 0)
                {
                        joint_state->setUsage(joint_state->getUsage() | LLJointState::ROT );
                }

                //---------------------------------------------------------------------
                // scan rotation curve keys
                //---------------------------------------------------------------------
                RotationCurve *rCurve = &joint_motion->mRotationCurve;

                for (S32 k = 0; k < joint_motion->mRotationCurve.mNumKeys; k++)
                {
                        F32 time;
                        U16 time_short;

                        if (old_version)
                        {
                                if (!dp.unpackF32(time, "time"))
                                {
                                        llwarns << "can't read rotation key (" << k << ")" << llendl;
                                        return FALSE;
                                }

                        }
                        else
                        {
                                if (!dp.unpackU16(time_short, "time"))
                                {
                                        llwarns << "can't read rotation key (" << k << ")" << llendl;
                                        return FALSE;
                                }

                                time = U16_to_F32(time_short, 0.f, mJointMotionList->mDuration);
                        }
                        
                        RotationKey rot_key;
                        rot_key.mTime = time;
                        LLVector3 rot_angles;
                        U16 x, y, z;

                        BOOL success = TRUE;

                        if (old_version)
                        {
                                success = dp.unpackVector3(rot_angles, "rot_angles");

                                LLQuaternion::Order ro = StringToOrder("ZYX");
                                rot_key.mRotation = mayaQ(rot_angles.mV[VX], rot_angles.mV[VY], rot_angles.mV[VZ], ro);
                        }
                        else
                        {
                                success &= dp.unpackU16(x, "rot_angle_x");
                                success &= dp.unpackU16(y, "rot_angle_y");
                                success &= dp.unpackU16(z, "rot_angle_z");

                                LLVector3 rot_vec;
                                rot_vec.mV[VX] = U16_to_F32(x, -1.f, 1.f);
                                rot_vec.mV[VY] = U16_to_F32(y, -1.f, 1.f);
                                rot_vec.mV[VZ] = U16_to_F32(z, -1.f, 1.f);
                                rot_key.mRotation.unpackFromVector3(rot_vec);
                        }

                        if (!success)
                        {
                                llwarns << "can't read rotation key (" << k << ")" << llendl;
                                return FALSE;
                        }

                        rCurve->mKeys[time] = rot_key;
                }

                //---------------------------------------------------------------------
                // scan position curve header
                //---------------------------------------------------------------------
                if (!dp.unpackS32(joint_motion->mPositionCurve.mNumKeys, "num_pos_keys"))
                {
                        llwarns << "can't read number of position keys" << llendl;
                        return FALSE;
                }

                joint_motion->mPositionCurve.mInterpolationType = IT_LINEAR;
                if (joint_motion->mPositionCurve.mNumKeys != 0)
                {
                        joint_state->setUsage(joint_state->getUsage() | LLJointState::POS );
                }

                //---------------------------------------------------------------------
                // scan position curve keys
                //---------------------------------------------------------------------
                PositionCurve *pCurve = &joint_motion->mPositionCurve;
                BOOL is_pelvis = joint_motion->mJointName == "mPelvis";
                for (S32 k = 0; k < joint_motion->mPositionCurve.mNumKeys; k++)
                {
                        U16 time_short;
                        PositionKey pos_key;

                        if (old_version)
                        {
                                if (!dp.unpackF32(pos_key.mTime, "time"))
                                {
                                        llwarns << "can't read position key (" << k << ")" << llendl;
                                        return FALSE;
                                }
                        }
                        else
                        {
                                if (!dp.unpackU16(time_short, "time"))
                                {
                                        llwarns << "can't read position key (" << k << ")" << llendl;
                                        return FALSE;
                                }

                                pos_key.mTime = U16_to_F32(time_short, 0.f, mJointMotionList->mDuration);
                        }

                        BOOL success = TRUE;

                        if (old_version)
                        {
                                success = dp.unpackVector3(pos_key.mPosition, "pos");
                        }
                        else
                        {
                                U16 x, y, z;

                                success &= dp.unpackU16(x, "pos_x");
                                success &= dp.unpackU16(y, "pos_y");
                                success &= dp.unpackU16(z, "pos_z");

                                pos_key.mPosition.mV[VX] = U16_to_F32(x, -LL_MAX_PELVIS_OFFSET, LL_MAX_PELVIS_OFFSET);
                                pos_key.mPosition.mV[VY] = U16_to_F32(y, -LL_MAX_PELVIS_OFFSET, LL_MAX_PELVIS_OFFSET);
                                pos_key.mPosition.mV[VZ] = U16_to_F32(z, -LL_MAX_PELVIS_OFFSET, LL_MAX_PELVIS_OFFSET);
                        }

                        if (!success)
                        {
                                llwarns << "can't read position key (" << k << ")" << llendl;
                                return FALSE;
                        }
                        
                        pCurve->mKeys[pos_key.mTime] = pos_key;

                        if (is_pelvis)
                        {
                                mJointMotionList->mPelvisBBox.addPoint(pos_key.mPosition);
                        }
                }

                joint_motion->mUsage = joint_state->getUsage();
        }

        //-------------------------------------------------------------------------
        // get number of constraints
        //-------------------------------------------------------------------------
        S32 num_constraints = 0;
        if (!dp.unpackS32(num_constraints, "num_constraints"))
        {
                llwarns << "can't read number of constraints" << llendl;
                return FALSE;
        }

        if (num_constraints > MAX_CONSTRAINTS)
        {
                llwarns << "Too many constraints...ignoring" << llendl;
        }
        else
        {
                //-------------------------------------------------------------------------
                // get constraints
                //-------------------------------------------------------------------------
                std::string str;
                for(S32 i = 0; i < num_constraints; ++i)
                {
                        // read in constraint data
                        JointConstraintSharedData* constraintp = new JointConstraintSharedData;
                        U8 byte = 0;

                        if (!dp.unpackU8(byte, "chain_length"))
                        {
                                llwarns << "can't read constraint chain length" << llendl;
                                delete constraintp;
                                return FALSE;
                        }
                        constraintp->mChainLength = (S32) byte;

                        if (!dp.unpackU8(byte, "constraint_type"))
                        {
                                llwarns << "can't read constraint type" << llendl;
                                delete constraintp;
                                return FALSE;
                        }
                        constraintp->mConstraintType = (EConstraintType)byte;

                        const S32 BIN_DATA_LENGTH = 16;
                        U8 bin_data[BIN_DATA_LENGTH];
                        if (!dp.unpackBinaryDataFixed(bin_data, BIN_DATA_LENGTH, "source_volume"))
                        {
                                llwarns << "can't read source volume name" << llendl;
                                delete constraintp;
                                return FALSE;
                        }

                        bin_data[BIN_DATA_LENGTH-1] = 0; // Ensure null termination
                        str = (char*)bin_data;
                        constraintp->mSourceConstraintVolume = mCharacter->getCollisionVolumeID(str);

                        if (!dp.unpackVector3(constraintp->mSourceConstraintOffset, "source_offset"))
                        {
                                llwarns << "can't read constraint source offset" << llendl;
                                delete constraintp;
                                return FALSE;
                        }

                        if (!dp.unpackBinaryDataFixed(bin_data, BIN_DATA_LENGTH, "target_volume"))
                        {
                                llwarns << "can't read target volume name" << llendl;
                                delete constraintp;
                                return FALSE;
                        }

                        bin_data[BIN_DATA_LENGTH-1] = 0; // Ensure null termination
                        str = (char*)bin_data;
                        if (str == "GROUND")
                        {
                                // constrain to ground
                                constraintp->mConstraintTargetType = TYPE_GROUND;
                        }
                        else
                        {
                                constraintp->mConstraintTargetType = TYPE_BODY;
                                constraintp->mTargetConstraintVolume = mCharacter->getCollisionVolumeID(str);
                        }

                        if (!dp.unpackVector3(constraintp->mTargetConstraintOffset, "target_offset"))
                        {
                                llwarns << "can't read constraint target offset" << llendl;
                                delete constraintp;
                                return FALSE;
                        }

                        if (!dp.unpackVector3(constraintp->mTargetConstraintDir, "target_dir"))
                        {
                                llwarns << "can't read constraint target direction" << llendl;
                                delete constraintp;
                                return FALSE;
                        }

                        if (!constraintp->mTargetConstraintDir.isExactlyZero())
                        {
                                constraintp->mUseTargetOffset = TRUE;
        //                      constraintp->mTargetConstraintDir *= constraintp->mSourceConstraintOffset.magVec();
                        }

                        if (!dp.unpackF32(constraintp->mEaseInStartTime, "ease_in_start"))
                        {
                                llwarns << "can't read constraint ease in start time" << llendl;
                                delete constraintp;
                                return FALSE;
                        }

                        if (!dp.unpackF32(constraintp->mEaseInStopTime, "ease_in_stop"))
                        {
                                llwarns << "can't read constraint ease in stop time" << llendl;
                                delete constraintp;
                                return FALSE;
                        }

                        if (!dp.unpackF32(constraintp->mEaseOutStartTime, "ease_out_start"))
                        {
                                llwarns << "can't read constraint ease out start time" << llendl;
                                delete constraintp;
                                return FALSE;
                        }

                        if (!dp.unpackF32(constraintp->mEaseOutStopTime, "ease_out_stop"))
                        {
                                llwarns << "can't read constraint ease out stop time" << llendl;
                                delete constraintp;
                                return FALSE;
                        }

                        mJointMotionList->mConstraints.push_front(constraintp);

                        constraintp->mJointStateIndices = new S32[constraintp->mChainLength + 1];
                        
                        LLJoint* joint = mCharacter->findCollisionVolume(constraintp->mSourceConstraintVolume);
                        // get joint to which this collision volume is attached
                        if (!joint)
                        {
                                return FALSE;
                        }
                        for (S32 i = 0; i < constraintp->mChainLength + 1; i++)
                        {
                                LLJoint* parent = joint->getParent();
                                if (!parent)
                                {
                                        llwarns << "Joint with no parent: " << joint->getName()
                                                        << " Emote: " << mEmoteName << llendl;
                                        return FALSE;
                                }
                                joint = parent;
                                constraintp->mJointStateIndices[i] = -1;
                                for (U32 j = 0; j < mJointMotionList->getNumJointMotions(); j++)
                                {
                                        if(getJoint(j) == joint)
                                        {
                                                constraintp->mJointStateIndices[i] = (S32)j;
                                                break;
                                        }
                                }
                        }

                }
        }

        // *FIX: support cleanup of old keyframe data
        LLKeyframeDataCache::addKeyframeData(getID(),  mJointMotionList);
        mAssetStatus = ASSET_LOADED;

        setupPose();

        return TRUE;
}

//-----------------------------------------------------------------------------
// serialize()
//-----------------------------------------------------------------------------
BOOL LLKeyframeMotion::serialize(LLDataPacker& dp) const
{
        BOOL success = TRUE;

        success &= dp.packU16(KEYFRAME_MOTION_VERSION, "version");
        success &= dp.packU16(KEYFRAME_MOTION_SUBVERSION, "sub_version");
        success &= dp.packS32(mJointMotionList->mBasePriority, "base_priority");
        success &= dp.packF32(mJointMotionList->mDuration, "duration");
        success &= dp.packString(mEmoteName.c_str(), "emote_name");
        success &= dp.packF32(mJointMotionList->mLoopInPoint, "loop_in_point");
        success &= dp.packF32(mJointMotionList->mLoopOutPoint, "loop_out_point");
        success &= dp.packS32(mJointMotionList->mLoop, "loop");
        success &= dp.packF32(mJointMotionList->mEaseInDuration, "ease_in_duration");
        success &= dp.packF32(mJointMotionList->mEaseOutDuration, "ease_out_duration");
        success &= dp.packU32(mJointMotionList->mHandPose, "hand_pose");
        success &= dp.packU32(mJointMotionList->getNumJointMotions(), "num_joints");

        for (U32 i = 0; i < mJointMotionList->getNumJointMotions(); i++)
        {
                JointMotion* joint_motionp = mJointMotionList->getJointMotion(i);
                success &= dp.packString(joint_motionp->mJointName.c_str(), "joint_name");
                success &= dp.packS32(joint_motionp->mPriority, "joint_priority");
                success &= dp.packS32(joint_motionp->mRotationCurve.mNumKeys, "num_rot_keys");

                for (RotationCurve::key_map_t::iterator iter = joint_motionp->mRotationCurve.mKeys.begin();
                         iter != joint_motionp->mRotationCurve.mKeys.end(); ++iter)
                {
                        RotationKey& rot_key = iter->second;
                        U16 time_short = F32_to_U16(rot_key.mTime, 0.f, mJointMotionList->mDuration);
                        success &= dp.packU16(time_short, "time");

                        LLVector3 rot_angles = rot_key.mRotation.packToVector3();
                        
                        U16 x, y, z;
                        rot_angles.quantize16(-1.f, 1.f, -1.f, 1.f);
                        x = F32_to_U16(rot_angles.mV[VX], -1.f, 1.f);
                        y = F32_to_U16(rot_angles.mV[VY], -1.f, 1.f);
                        z = F32_to_U16(rot_angles.mV[VZ], -1.f, 1.f);
                        success &= dp.packU16(x, "rot_angle_x");
                        success &= dp.packU16(y, "rot_angle_y");
                        success &= dp.packU16(z, "rot_angle_z");
                }

                success &= dp.packS32(joint_motionp->mPositionCurve.mNumKeys, "num_pos_keys");
                for (PositionCurve::key_map_t::iterator iter = joint_motionp->mPositionCurve.mKeys.begin();
                         iter != joint_motionp->mPositionCurve.mKeys.end(); ++iter)
                {
                        PositionKey& pos_key = iter->second;
                        U16 time_short = F32_to_U16(pos_key.mTime, 0.f, mJointMotionList->mDuration);
                        success &= dp.packU16(time_short, "time");

                        U16 x, y, z;
                        pos_key.mPosition.quantize16(-LL_MAX_PELVIS_OFFSET, LL_MAX_PELVIS_OFFSET, -LL_MAX_PELVIS_OFFSET, LL_MAX_PELVIS_OFFSET);
                        x = F32_to_U16(pos_key.mPosition.mV[VX], -LL_MAX_PELVIS_OFFSET, LL_MAX_PELVIS_OFFSET);
                        y = F32_to_U16(pos_key.mPosition.mV[VY], -LL_MAX_PELVIS_OFFSET, LL_MAX_PELVIS_OFFSET);
                        z = F32_to_U16(pos_key.mPosition.mV[VZ], -LL_MAX_PELVIS_OFFSET, LL_MAX_PELVIS_OFFSET);
                        success &= dp.packU16(x, "pos_x");
                        success &= dp.packU16(y, "pos_y");
                        success &= dp.packU16(z, "pos_z");
                }
        }       

        success &= dp.packS32(mJointMotionList->mConstraints.size(), "num_constraints");
        for (JointMotionList::constraint_list_t::const_iterator iter = mJointMotionList->mConstraints.begin();
                 iter != mJointMotionList->mConstraints.end(); ++iter)
        {
                JointConstraintSharedData* shared_constraintp = *iter;
                success &= dp.packU8(shared_constraintp->mChainLength, "chain_length");
                success &= dp.packU8(shared_constraintp->mConstraintType, "constraint_type");
                char volume_name[16];   /* Flawfinder: ignore */
                snprintf(volume_name, sizeof(volume_name), "%s",        /* Flawfinder: ignore */
                                 mCharacter->findCollisionVolume(shared_constraintp->mSourceConstraintVolume)->getName().c_str()); 
                success &= dp.packBinaryDataFixed((U8*)volume_name, 16, "source_volume");
                success &= dp.packVector3(shared_constraintp->mSourceConstraintOffset, "source_offset");
                if (shared_constraintp->mConstraintTargetType == TYPE_GROUND)
                {
                        snprintf(volume_name,sizeof(volume_name), "%s", "GROUND");      /* Flawfinder: ignore */
                }
                else
                {
                        snprintf(volume_name, sizeof(volume_name),"%s", /* Flawfinder: ignore */
                                         mCharacter->findCollisionVolume(shared_constraintp->mTargetConstraintVolume)->getName().c_str());      
                }
                success &= dp.packBinaryDataFixed((U8*)volume_name, 16, "target_volume");
                success &= dp.packVector3(shared_constraintp->mTargetConstraintOffset, "target_offset");
                success &= dp.packVector3(shared_constraintp->mTargetConstraintDir, "target_dir");
                success &= dp.packF32(shared_constraintp->mEaseInStartTime, "ease_in_start");
                success &= dp.packF32(shared_constraintp->mEaseInStopTime, "ease_in_stop");
                success &= dp.packF32(shared_constraintp->mEaseOutStartTime, "ease_out_start");
                success &= dp.packF32(shared_constraintp->mEaseOutStopTime, "ease_out_stop");
        }

        return success;
}

//-----------------------------------------------------------------------------
// getFileSize()
//-----------------------------------------------------------------------------
U32     LLKeyframeMotion::getFileSize()
{
        // serialize into a dummy buffer to calculate required size
        LLDataPackerBinaryBuffer dp;
        serialize(dp);

        return dp.getCurrentSize();
}

//-----------------------------------------------------------------------------
// getPelvisBBox()
//-----------------------------------------------------------------------------
const LLBBoxLocal &LLKeyframeMotion::getPelvisBBox()
{
        return mJointMotionList->mPelvisBBox;
}

//-----------------------------------------------------------------------------
// setPriority()
//-----------------------------------------------------------------------------
void LLKeyframeMotion::setPriority(S32 priority)
{
        if (mJointMotionList) 
        {
                S32 priority_delta = priority - mJointMotionList->mBasePriority;
                mJointMotionList->mBasePriority = (LLJoint::JointPriority)priority;
                mJointMotionList->mMaxPriority = mJointMotionList->mBasePriority;

                for (U32 i = 0; i < mJointMotionList->getNumJointMotions(); i++)
                {
                        JointMotion* joint_motion = mJointMotionList->getJointMotion(i);                        
                        joint_motion->mPriority = (LLJoint::JointPriority)llclamp(
                                (S32)joint_motion->mPriority + priority_delta,
                                (S32)LLJoint::LOW_PRIORITY, 
                                (S32)LLJoint::HIGHEST_PRIORITY);
                        getJointState(i)->setPriority(joint_motion->mPriority);
                }
        }
}

//-----------------------------------------------------------------------------
// setEmote()
//-----------------------------------------------------------------------------
void LLKeyframeMotion::setEmote(const LLUUID& emote_id)
{
        const char* emote_name = gAnimLibrary.animStateToString(emote_id);
        if (emote_name)
        {
                mEmoteName = emote_name;
        }
        else
        {
                mEmoteName = "";
        }
}

//-----------------------------------------------------------------------------
// setEaseIn()
//-----------------------------------------------------------------------------
void LLKeyframeMotion::setEaseIn(F32 ease_in)
{
        if (mJointMotionList)
        {
                mJointMotionList->mEaseInDuration = llmax(ease_in, 0.f);
        }
}

//-----------------------------------------------------------------------------
// setEaseOut()
//-----------------------------------------------------------------------------
void LLKeyframeMotion::setEaseOut(F32 ease_in)
{
        if (mJointMotionList)
        {
                mJointMotionList->mEaseOutDuration = llmax(ease_in, 0.f);
        }
}


//-----------------------------------------------------------------------------
// flushKeyframeCache()
//-----------------------------------------------------------------------------
void LLKeyframeMotion::flushKeyframeCache()
{
        // TODO: Make this safe to do
//      LLKeyframeDataCache::clear();
}

//-----------------------------------------------------------------------------
// setLoop()
//-----------------------------------------------------------------------------
void LLKeyframeMotion::setLoop(BOOL loop)
{
        if (mJointMotionList) 
        {
                mJointMotionList->mLoop = loop; 
                mSendStopTimestamp = F32_MAX;
        }
}


//-----------------------------------------------------------------------------
// setLoopIn()
//-----------------------------------------------------------------------------
void LLKeyframeMotion::setLoopIn(F32 in_point)
{
        if (mJointMotionList)
        {
                mJointMotionList->mLoopInPoint = in_point; 
                
                // set up loop keys
                for (U32 i = 0; i < mJointMotionList->getNumJointMotions(); i++)
                {
                        JointMotion* joint_motion = mJointMotionList->getJointMotion(i);
                        
                        PositionCurve* pos_curve = &joint_motion->mPositionCurve;
                        RotationCurve* rot_curve = &joint_motion->mRotationCurve;
                        ScaleCurve* scale_curve = &joint_motion->mScaleCurve;
                        
                        pos_curve->mLoopInKey.mTime = mJointMotionList->mLoopInPoint;
                        rot_curve->mLoopInKey.mTime = mJointMotionList->mLoopInPoint;
                        scale_curve->mLoopInKey.mTime = mJointMotionList->mLoopInPoint;

                        pos_curve->mLoopInKey.mPosition = pos_curve->getValue(mJointMotionList->mLoopInPoint, mJointMotionList->mDuration);
                        rot_curve->mLoopInKey.mRotation = rot_curve->getValue(mJointMotionList->mLoopInPoint, mJointMotionList->mDuration);
                        scale_curve->mLoopInKey.mScale = scale_curve->getValue(mJointMotionList->mLoopInPoint, mJointMotionList->mDuration);
                }
        }
}

//-----------------------------------------------------------------------------
// setLoopOut()
//-----------------------------------------------------------------------------
void LLKeyframeMotion::setLoopOut(F32 out_point)
{
        if (mJointMotionList)
        {
                mJointMotionList->mLoopOutPoint = out_point; 
                
                // set up loop keys
                for (U32 i = 0; i < mJointMotionList->getNumJointMotions(); i++)
                {
                        JointMotion* joint_motion = mJointMotionList->getJointMotion(i);
                        
                        PositionCurve* pos_curve = &joint_motion->mPositionCurve;
                        RotationCurve* rot_curve = &joint_motion->mRotationCurve;
                        ScaleCurve* scale_curve = &joint_motion->mScaleCurve;
                        
                        pos_curve->mLoopOutKey.mTime = mJointMotionList->mLoopOutPoint;
                        rot_curve->mLoopOutKey.mTime = mJointMotionList->mLoopOutPoint;
                        scale_curve->mLoopOutKey.mTime = mJointMotionList->mLoopOutPoint;

                        pos_curve->mLoopOutKey.mPosition = pos_curve->getValue(mJointMotionList->mLoopOutPoint, mJointMotionList->mDuration);
                        rot_curve->mLoopOutKey.mRotation = rot_curve->getValue(mJointMotionList->mLoopOutPoint, mJointMotionList->mDuration);
                        scale_curve->mLoopOutKey.mScale = scale_curve->getValue(mJointMotionList->mLoopOutPoint, mJointMotionList->mDuration);
                }
        }
}

//-----------------------------------------------------------------------------
// onLoadComplete()
//-----------------------------------------------------------------------------
void LLKeyframeMotion::onLoadComplete(LLVFS *vfs,
                                                                           const LLUUID& asset_uuid,
                                                                           LLAssetType::EType type,
                                                                           void* user_data, S32 status, LLExtStat ext_status)
{
        LLUUID* id = (LLUUID*)user_data;
                
        std::vector<LLCharacter* >::iterator char_iter = LLCharacter::sInstances.begin();

        while(char_iter != LLCharacter::sInstances.end() &&
                        (*char_iter)->getID() != *id)
        {
                ++char_iter;
        }
        
        delete id;

        if (char_iter == LLCharacter::sInstances.end())
        {
                return;
        }

        LLCharacter* character = *char_iter;

        // create an instance of this motion (it may or may not already exist)
        LLKeyframeMotion* motionp = (LLKeyframeMotion*) character->createMotion(asset_uuid);

        if (motionp)
        {
                if (0 == status)
                {
                        if (motionp->mAssetStatus == ASSET_LOADED)
                        {
                                // asset already loaded
                                return;
                        }
                        LLVFile file(vfs, asset_uuid, type, LLVFile::READ);
                        S32 size = file.getSize();
                        
                        U8* buffer = new U8[size];
                        file.read((U8*)buffer, size);   /*Flawfinder: ignore*/
                        
                        lldebugs << "Loading keyframe data for: " << motionp->getName() << ":" << motionp->getID() << " (" << size << " bytes)" << llendl;
                        
                        LLDataPackerBinaryBuffer dp(buffer, size);
                        if (motionp->deserialize(dp))
                        {
                                motionp->mAssetStatus = ASSET_LOADED;
                        }
                        else
                        {
                                llwarns << "Failed to decode asset for animation " << motionp->getName() << ":" << motionp->getID() << llendl;
                                motionp->mAssetStatus = ASSET_FETCH_FAILED;
                        }
                        
                        delete []buffer;
                }
                else
                {
                        llwarns << "Failed to load asset for animation " << motionp->getName() << ":" << motionp->getID() << llendl;
                        motionp->mAssetStatus = ASSET_FETCH_FAILED;
                }
        }
        else
        {
                // motionp is NULL
                llwarns << "Failed to createMotion() for asset UUID " << asset_uuid << llendl;
        }
}

//--------------------------------------------------------------------
// LLKeyframeDataCache::dumpDiagInfo()
//--------------------------------------------------------------------
void LLKeyframeDataCache::dumpDiagInfo()
{
        // keep track of totals
        U32 total_size = 0;

        char buf[1024];         /* Flawfinder: ignore */

        llinfos << "-----------------------------------------------------" << llendl;
        llinfos << "       Global Motion Table (DEBUG only)" << llendl;
        llinfos << "-----------------------------------------------------" << llendl;

        // print each loaded mesh, and it's memory usage
        for (keyframe_data_map_t::iterator map_it = sKeyframeDataMap.begin();
                 map_it != sKeyframeDataMap.end(); ++map_it)
        {
                U32 joint_motion_kb;

                LLKeyframeMotion::JointMotionList *motion_list_p = map_it->second;

                llinfos << "Motion: " << map_it->first << llendl;

                joint_motion_kb = motion_list_p->dumpDiagInfo();

                total_size += joint_motion_kb;
        }

        llinfos << "-----------------------------------------------------" << llendl;
        llinfos << "Motions\tTotal Size" << llendl;
        snprintf(buf, sizeof(buf), "%d\t\t%d bytes", (S32)sKeyframeDataMap.size(), total_size );                /* Flawfinder: ignore */
        llinfos << buf << llendl;
        llinfos << "-----------------------------------------------------" << llendl;
}


//--------------------------------------------------------------------
// LLKeyframeDataCache::addKeyframeData()
//--------------------------------------------------------------------
void LLKeyframeDataCache::addKeyframeData(const LLUUID& id, LLKeyframeMotion::JointMotionList* joint_motion_listp)
{
        sKeyframeDataMap[id] = joint_motion_listp;
}

//--------------------------------------------------------------------
// LLKeyframeDataCache::removeKeyframeData()
//--------------------------------------------------------------------
void LLKeyframeDataCache::removeKeyframeData(const LLUUID& id)
{
        keyframe_data_map_t::iterator found_data = sKeyframeDataMap.find(id);
        if (found_data != sKeyframeDataMap.end())
        {
                delete found_data->second;
                sKeyframeDataMap.erase(found_data);
        }
}

//--------------------------------------------------------------------
// LLKeyframeDataCache::getKeyframeData()
//--------------------------------------------------------------------
LLKeyframeMotion::JointMotionList* LLKeyframeDataCache::getKeyframeData(const LLUUID& id)
{
        keyframe_data_map_t::iterator found_data = sKeyframeDataMap.find(id);
        if (found_data == sKeyframeDataMap.end())
        {
                return NULL;
        }
        return found_data->second;
}

//--------------------------------------------------------------------
// ~LLKeyframeDataCache::LLKeyframeDataCache()
//--------------------------------------------------------------------
LLKeyframeDataCache::~LLKeyframeDataCache()
{
        clear();
}

//-----------------------------------------------------------------------------
// clear()
//-----------------------------------------------------------------------------
void LLKeyframeDataCache::clear()
{
        for_each(sKeyframeDataMap.begin(), sKeyframeDataMap.end(), DeletePairedPointer());
        sKeyframeDataMap.clear();
}

//-----------------------------------------------------------------------------
// JointConstraint()
//-----------------------------------------------------------------------------
LLKeyframeMotion::JointConstraint::JointConstraint(JointConstraintSharedData* shared_data) : mSharedData(shared_data) 
{
        mTotalLength = 0.f;
        mActive = FALSE;
        mSourceVolume = NULL;
        mTargetVolume = NULL;
        mFixupDistanceRMS = 0.f;
}

//-----------------------------------------------------------------------------
// ~JointConstraint()
//-----------------------------------------------------------------------------
LLKeyframeMotion::JointConstraint::~JointConstraint()
{
}

// End

---