Calculating Rotations

Hi guys,

I am trying to script four prims to make apyramid shape, and I am having all kinds of trouble with calculating rotations.

I even tried it manually without success, and I am sure there must be a simple formula for working it out, if anyone has it.

Imagine a flat square prim on the ground, the base. Imagine then a prim 2x2x10 and I want to place that at one corner of the base, and the other end touching the highest apex point of the base that it can.

I have worked out the rotations mathematically. I need to rotate the prim first horizontally by 45 degrees (315 degrees), then rotate it vertically by 63.435 degrees (296.565 degrees).

The first rotation is simple enough, but if I then go to Local coordinates, and rotate the prim vertically, then all the rotations go haywire. The prim itself looks fine, but the axis i am rotating on does not show the 63.435 degrees I am looking for, and the axis I have not rotated on now has a value in it.

Does anyone know how to turn rotations in 2 axes into 3 axes values?

Many thanks for any advice here. I will cross post this in the building forum too, as this is applaciable to both scripting and building.

TIA

Rock

sorry re read your post and my answer wasn't what you were looking for.

not 100% sure what you mean but try this i use callahans script all the time for my movement based scripts with alot of tweeking ;p

---------------
-Movements-
---------------

vector r_open = <-179.99371, -89.18843, 90.04463>; // Rotations in degrees relative to root prim
vector r_closed = <-90.00000, 0.00001, 90.00000>;

vector p_open = <-1.09680, -4.07110, -0.17270>; // Postition in meters relative to root prim
vector p_closed = <-3.17590, 7.17000, 0.28680>; // Postition in meters relative to root prim

key sound = "c263e31a-14f4-fb1b-fc37-0707269a573a"; // the UUID of the sound the wings will make opening or closing.

integer close_on_rez = TRUE; // Change to false to have it open on rez

// ======================================================= Nothing from here down needs modding (unless you're chaning the command this script responds to).

rotation LocalRot(rotation localrot)
{
    rotation LocRot = localrot / ( (ZERO_ROTATION / llGetLocalRot()) * llGetRot());
    return LocRot;
}

open()
{
    llTriggerSound(sound,1.0);
    llSetPrimitiveParams([PRIM_ROTATION, LocalRot(llEuler2Rot(r_open * DEG_TO_RAD)), PRIM_POSITION, p_open]);
}

close()
{
    llTriggerSound(sound,1.0);
    llSetPrimitiveParams([PRIM_ROTATION, LocalRot(llEuler2Rot(r_closed * DEG_TO_RAD)), PRIM_POSITION, p_closed]);
}

default 
{
    state_entry() 
    {
        if (close_on_rez)
        {
            close();
        }
        else
        {
            open();
        }
    }
    
    on_rez(integer rez)
    {
        llResetScript();
    }
    
    link_message(integer send, integer num, string msg, key id)
    {
        if ( msg == "(open command)" )
        {
            open();
        }
        else if ( msg == "(close command)" )
        {
            close();
        }
    } 
}


----------------------
-Getting Locations-
----------------------

default
{
    state_entry()
    {
        llSay(0, "Base rotation: " + (string)(llRot2Euler(llGetLocalRot())*RAD_TO_DEG) ); 
        llSay(0, "Base Position: " + (string)llGetLocalPos());
        llRemoveInventory(llGetScriptName()); 
    }
}