geometry

I'm getting too much code trying to solve this relative simple thing, so i'd like to ask if someone know a simple solution.

Two cubes, randomly moved and/or rotated. Unlinked. But next to eachother.

Cuba A can be moved and rotated and cube B must stay 'attached' to cube B on the same side as it started. Start data (pos and rotation from cube A and B) will be stored.
So, basically act like they are linked. If for some reason a gap is formed between cube A and B it must reposition itself by using the start values before the movement.

What i like to know is how to solve the last point, so to reposition the cubes relative to eachother, but on another vector and rotation.

You want to store B's initial positional offset from A, for which B will need to know A's initial position (a_pos) and rotation (a_rot):

vector b_offset = ( b_pos - a_pos ) / a_rot;

I gather that the two will always maintain the same rotation, so that is all you need to store. Every time A moves, it will have to communicate it's new position and rotation to B, probably via a private chat channel. Or, and this is a recent addition to LSL, B can get data on A using llGetObjectDetails, provided that it is given A's instance kay.

When B will find it's new position and rotation thusly:

vector new_pos = b_offset * a_rot + a_pos;
rotation new_rot = a_rot;

Thanks Deanna, your sample made it clear again.
Cube B can have a different rotation, but that's just as easy. Got it running

If the delay between A moving and B moving bothers you, you can reduce it by using a timer.

A sends new position, rotation, and a *time* to B before it moves. B computes its new position and rotation.

At *time*, they both move.