HUD Compass...

Hi there. After many tries, I have failed in trying to get a HUD compass to work for me. How would one go about doing so? I know little about rotations, and if anyone has an example I could use, please share! (I'll be on for several more hours) Thanks in advance.

Here's what I use for a text-based compass:

adapted from a compass script elsewhere in the library

integer horizonOn ;
integer resolutionFactor = 15;//to calibrate multiplicatively
integer fudgeFactor = 0;//to calibrate additively

default
{
    state_entry()
    {
        llSetTimerEvent(0.5);
    }

    touch_start(integer total_number)
    {
        if(horizonOn)
        {
            horizonOn = FALSE;
            llSetTimerEvent(0);
            llSetText("",<1,1,1>,0);
        }
        else
        {
            horizonOn = TRUE;
            llSetTimerEvent(0.5);
        }
    }
    
    timer()
    {
        //adapted from the flying tako
        //and http://forums.secondlife.com/showthread.php?t=28047
        rotation currRot=llGetRot();
        vector currEuler=llRot2Euler(currRot);
        float zRotAngle=currEuler.z;//boat heading
        float heading=PI_BY_TWO-zRotAngle;
        while (heading<0) heading+=TWO_PI;
        heading=heading*RAD_TO_DEG; 
        integer evenHeading = llRound(heading + fudgeFactor);
        string direction; // this is the variable we will set the text with
        vector vel = llRot2Fwd(currRot);// get the current velocity
        integer x = llRound(vel.x); // round the x value of the velocity and assign it to a new variable
        integer y = llRound(vel.y); // round the y value of the velocity and assign it to a new variable
        if((llAbs(x) > llAbs(y)) && (x > 0))
        {
                direction="East";
        }
        else if((llAbs(x) > llAbs(y)) && (x < 0))
        {
            
                direction = "West";
        }
        else if((llAbs(y) > llAbs(x)) && (y > 0))
        {
            
                direction = "North";
        }
         else if((llAbs(y) > llAbs(x)) && (y < 0))
        {
           
                direction = "South";
        }
         else if((llAbs(y) == llAbs(x)) && (x > 0 && y > 0))
        {
           
                direction = "Northeast";
        }
        else if((llAbs(y) == llAbs(x)) && (x < 0 && y > 0))                             
        {
           
                direction = "Northwest";
        }
        else if((llAbs(y) == llAbs(x)) && (x < 0 && y < 0))                              
        {
           
                direction = "Southwest";
        }
        else if((llAbs(y) == llAbs(x)) && (x > 0 && y < 0)) 
        {
           
                direction = "Southeast";
        }
        string readout = direction+"\n("+(string)evenHeading+" deg.)";
        llSetText(readout,<1,1,1>,1);
    }
    
        
    link_message(integer sender_num, integer num, string message, key id)
    {
        if(message == "hide compass")
        {
            state dormant;   
        }
        string part1 = llList2String(llParseString2List(message, [","], []),0);
        string part2 = llList2String(llParseString2List(message, [","], []),1);
        if( part1 == "face" && part2 == "default")
        {
            llSetText("",<1,1,1>,1);
        }
        else if( part1 == "face"  && part2 != "default")
        {
            llSetText("",<1,1,1>,1);
        }
    }
    
    state_exit()
    {
        llSetTimerEvent(0.0);
        llSetText("",<1,1,1>,1);
    }
}

state dormant
{
    state_entry()
    {
        llSetText("",<1,1,1>,1);
    }
        
    link_message(integer sender_num, integer num, string message, key id)
    {
        if(message == "show compass")
        {
            state default;   
        }
    }
}