Orientation Quaternion along curve

//create variables

vector tangentv = v@tangentv;
vector tangentu = v@tangentu;

tangentv = cross(tangentu, @N);

float seed = ch('seed') + @primseed;

@up = tangentu;

//define rotations YAW

float RandYaw= fit01(rand(i@ptnum+seed+225), -ch('rand_yaw'), ch('rand_yaw')) * chramp("ramp_yaw", @curveu);

float Yaw = chf('yaw') * chramp('ramp_yaw', @curveu) + 0.001;
//apply rotations YAW

@Yaw = Yaw;
RandYaw = RandYaw;

vector4 rot = quaternion(radians(Yaw+RandYaw), tangentv);

@N = qrotate(rot, @N);
@N = normalize(@N);

//define rotations ROLL
float RandRoll= fit01(rand(i@ptnum+seed+225), -ch('rand_roll'), ch('rand_roll')) * chramp("ramp_roll", @curveu);

float Roll = chf('roll') * chramp('ramp_roll', @curveu);

@Roll = Roll;
@RandRoll = RandRoll;

//apply rotations ROLL

vector4 rotr = quaternion(radians(Roll+RandRoll), tangentu);

@N = qrotate(rotr, @N);
@N = normalize(@N);

//define rotations TWIST

float RandTwist= fit01(rand(i@ptnum+seed+225), -ch('rand_twist'), ch('rand_twist')) * chramp("ramp_twist", @curveu);

float Twist = chf('twist') * chramp('ramp_twist', @curveu);

@RandTwist = RandTwist;
@Twist = Twist;
//apply rotations TWIST

vector4 rott = quaternion(radians(Twist+RandTwist), @N);

@up = qrotate(rott, @up);
@up = normalize(@up);

REQURIED ATTRIBUTES:
resample:
curveu
polyframe:
N (if its a straight line, might need to define N before polyframe)
tangentu
tangentv