Talk:BTLT
Revision as of 22:06, 4 November 2007 by Cron Stardust (talk | contribs) (Info on bug in the vector conversion functions.)
A bug in stiufv/vfuist
I was trying to use BTLT in one of my projects, and I kept noticing that the vectors were not coming beck out correctly, so I built a simple test script to demo what I thought I was observing, and sure enough, the first value in every vector I gave BTLT came back out incorrect. So, after some sniffing around the code, I came up with this fix:
| Code: BTLT stiufv/vfuist fix |
vector stiufv(string in)
{ //-XXXXYYYYZZZZ
integer raw = llBase64ToInteger(llGetSubString("AAA" + in + "AAAAAA", 0, 5)) >> 2;
integer offset = 1;
integer len = raw & 7;
return <stiuf(llDeleteSubString(in, -~len, 1)),
stiuf(llDeleteSubString(in, (len = (7 & (raw >> 3))) - ~(offset += len), offset)),
stiuf(llDeleteSubString(in, 0, offset + len)) >;
}
string vfuist(vector in)
{
string buf = fuist(in.y);
integer len = llStringLength(buf);
return llGetSubString(llIntegerToBase64(((len << 3) | llStringLength(buf)) << 2), 3, 4) + (buf = fuist(in.x)) + buf + fuist(in.z);
} //-XXXXYYYYZZZZ
|
I can't say that I understood all the code, I am still not up to the level of understanding code this optimized... But I compared these vector functions to the (working) rotation functions to come up with this fix, and found that it seems to work! Cron Stardust 21:06, 4 November 2007 (PST)