void Skeleton::generateBoneTransform( Matrix4* matVec , Matrix4 const& baseTrans , float* frames , float* weights , int num )
{
assert( mBaseBone->id == 0 );
matVec[ 0 ] = baseTrans;
int size = mBoneVec.size();
for ( int i = 1 ; i < size ; ++i )
{
BoneNode* bone = mBoneVec[i];
Matrix4& boneTrans = matVec[bone->id];
bone->calcFrameTransform( boneTrans , frames , weights , num );
TransformUntility::mul( boneTrans , boneTrans , matVec[ bone->parentId ] );
}
}
void Skeleton::generateBoneTransform( Matrix4* matVec , Matrix4 const& baseTrans , int frame , float fract )
{
assert( 0 <= fract && fract < 1.0f );
//M( blend ) = M(motion) * M( base )
assert( mBaseBone->id == 0 );
matVec[ 0 ] = baseTrans;
int size = mBoneVec.size();
for ( int i = 1 ; i < size ; ++i )
{
BoneNode* bone = mBoneVec[i];
Matrix4& boneTrans = matVec[bone->id];
bone->calcFrameTransform( boneTrans , frame , frame + 1 , fract );
TransformUntility::mul( boneTrans , boneTrans , matVec[ bone->parentId ] );
}
}
void Skeleton::generateInvLoacalTransform()
{
assert( mUseInvLocalTrans );
std::vector< Matrix4 > globalTransVec;
globalTransVec.resize( mBoneVec.size() );
globalTransVec[0] = Matrix4::Identity();
mBaseBone->invLocalTrans = Matrix4::Identity();
assert( mBaseBone->id == 0 );
int size = mBoneVec.size();
for ( int i = 1 ; i < size ; ++i )
{
BoneNode* bone = mBoneVec[i];
Matrix4 const& parentTrans = globalTransVec[ bone->parentId ];
Matrix4& worldTrans = globalTransVec[ bone->id ];
bone->calcFrameTransform( worldTrans , 0 );
TransformUntility::mul( worldTrans , worldTrans , parentTrans );
float det;
bool result = worldTrans.inverseAffine( bone->invLocalTrans , det );
}
}