Talk:Hierarchics
Default Rotation etc
It's a good script but the no rotation specified code leaves much to be desired. If the user specifies in the objects description that it should have a zero rotation, the script will ignore it. Additionally it forces the user to use Euler notation. You need something like: <lsl> rotation AngleString2Rot(string in, rotation bad){
//we test if it is an angle type we can use by:
//1) parse input and see if it has a value
//2) flip the sign of an element and test again.
rotation r = (rotation)in;
if(r)//it's a rotation (or something greater)
return r;//by greater it might be <x,y,z,s,...>
vector v = (vector)in;
if(v)// it's not a rotation but it is a vector
return llEuler2Rot(v * DEG_TO_RAD);
//now it's either default or invalid
//to determine which, we modify the input string and test agian
//if it passes, we know the result should be ZERO_ROTATION
integer index = llSubStringIndex(in, "<");
if(~index)
{
//we insert a negative sign
//but we have to remove spaces or they will cause problems
//we don't care about negative negative zero because
//breaking the parse is an indication that it did parse.
in = llGetSubString(in, 0, index) + "-" +
llStringTrim(llDeleteSubString(in, 0, index), STRING_TRIM_HEAD);
if((string)((vector)in) != (string)v)
return r;
//r is Identity but could have negative zero's, waste not want not.
//the user specified them, we should preserve them.
}
return bad;