Rez along prim Axis

Fisrt let me say that I am not a script writer or programmer so this type of stuff does not come easy to me. I am building a clock with a prim-based pendulum. I use Object Rez or rRezAt Root to make the 3-piece pendulum appear. One then touches the pendulum and it swings away happily. All well and good until the the clock is rez at a different rotation form the original build. Is there a way to have the object rez aligned with the axis (perpendicular to the face) no matter how he clock is positioned after if is rezzed?

Thanks a lot.

In the params to llRezObject & llRezAtRoot, there's a rotation param.

Try using llGetRot() for that param..

Here is one of the scripts being used:

//Rez an object on touch
string object = "Object";//Object in inventory
integer start_param = 10;
rotation rot;

default
{
state_entry()
{
rot = llEuler2Rot(< 0, 90, 90> * DEG_TO_RAD);
}
touch_start(integer a)
{
vector vec = llGetPos() + < 0.0, 0.0, 5.0>; // 5 meter above this
vector speed = llGetVel();
llRezAtRoot(object, vec, speed, rot, start_param);
}
}


i can (by hand) rotate the position of the pendulum by inserting the rotation in the
rot =llEuler2Rot portion

What i don't know how to do is to capture that info depending on how the clock is rezzed. The pendulum face and swing needed to aligned to the clock axis which could be almost any thing.

If script examples can be posted that would help me understand, assume i know nothing, LOL

Thanks

Does it come out right it you use this instead?

lRezAtRoot(object, vec, speed, rot * llGetRot(), start_param);

To rez along an axis, first convert the rotation to a vector:
llRot2Fwd(rot) will give you 1m along the x axis
llRot2Left(rot) will give you 1m along the y axis
llRot2Up(rot) will give you 1m along the z axis

You only need to choose the one direction you want to rez along, and multiply the resulting vector by the distance along that vector (or nothing for 1m). Multiply by a negative value to go the other way (back, right, down).

So to rez 2m along Y, you get something like:

string object = "<name_of_thing>";
rotation rot = llGetRot();
vector offset = llRot2Left(rot) * 2.0;
llRezAtRoot(object, llGetPos() + offset, ZERO_VECTOR, rot, -1);

Thanks for the suggestions, I will give them a try and report back. There is still hope I can get these presents done in time. )

Almost, you need to rotate the relative position too:
llRezAtRoot( object, llGetPos() + < 0.0, 0.0, 5.0 > * llGetRot(), speed, rot * llGetRot(), start_param );

this would be useful for an application i have but i would need the object to res 2 meters along the x axis and 1 along the Y, how do you combine them?

This is all great info and a solution is forming. If anyone wants an additonal challenge, there is another type of "pendulun" in the form a 4 balls that rotate horizontally for several revolutions, slow to a stop and the rotate with equal for back (clockwise to counter clockwise) and looped. I an currently using a swing script but is is NOT smooth and the speeds are all equal (no slowing down).

Suggestions and/pr script examples would be appreciated.

I think it's just:

vector destination = llGetPos() + (<2.0, 1.0, 0.0> * llGetRot());

Sounds like a good case for http://wiki.secondlife.com/wiki/LlRotLookAt or llLookAt.

Meade - I looked at that but can't makes heads or tails of it without an example to follow. I'm good a tweaking scripts but not writing them. However, everyone can have a clock when I'm done.

I was trying to add that into this script but i keep getting errors

default
{

touch_start(integer total_number) {

rotation rot = llGetRot();
vector offset = llRot2Left(rot) * 2.0;
llRezAtRoot(llGetInventoryName(INVENTORY_OBJECT,0), llGetPos() + offset, ZERO_VECTOR, rot, -1);

}

}

can anyone help?

Oops! Typoed.. Should be:

vector destination = llGetPos() + (<2.0, 1.0, 0.0> * llGetRot());

when trying to add in
vector destination = llGetPos() * (<2.0, 1.0, 0.0> * llGetRot());
i was getting syntax errors, probably because i cant figure out where to stick it, and I am not sure what part of the original script should be deleted out if any

I typo'ed - it should be llGetPos() +..., not llGetPos() *...

Something like this might work:
default
{
touch_start(integer total_number)
{
rotation rot = llGetRot();
vector offset = <2.0, 1.0, 0.0>;
llRezAtRoot(llGetInventoryName(INVENTORY_OBJECT,0) , llGetPos() + (offset * rot), ZERO_VECTOR, rot, -1);
}
}

that worked perfectly thank you very much