T, Q and S Values

When you set or retrieve translation (T), quaternion rotation (Q) and scaling (S) values separately for a Node or an Effector, each of these values is stored in an array of four numbers, with the following significance:

Translation values:

array index	description
0	Translation along the X axis.
1	Translation along the Y axis.
2	Translation along the Z axis.
3	Translation along the W axis. When you set the translation value for a Node or an Effector, HumanIK always uses 0.0 for this value. When you retrieve the translation value from a Node or an Effector, HumanIK always writes 0.0 in this value.

Quaternion rotation values:

array index	description
0	X component of the quaternion.
1	Y component of the quaternion.
2	Z component of the quaternion.
3	W component of the quaternion.

Scaling values:

array index	description
0	Scale along the X axis.
1	Scale along the Y axis.
2	Scale along the Z axis.
3	Scale along the W axis. When you set the scaling value for a Node or an Effector, HumanIK always uses 1.0 for this value. When you retrieve the value value from a Node or an Effector, HumanIK always writes 1.0 in this value.