RAD_TO_DEG Help

[w1zard]

Hey all,

I am looking at http://wiki.secondlife.com/wiki/Rotation

It only shows the constant RAD_TO_DEG, no example

Is anyone able to show me how to convert a rotation 2 vector 

Ty

W

[Acheron Gloom]

To convert a quaternion representation of rotation to a euler representation you use the function:

llRot2Euler(rotation rot);

[Rolig Loon]

It's not quite as easy as that. You need to be aware of your frame of reference whenever you work with rotations. Changing a rotation in the regional reference frame will have a very different effect from changing it in a local reference frame, relative to some other object or relative to an attachment point on your avatar.  This is probably the most complicated aspect of scripting in LSL.  To start learning, read http://wiki.secondlife.com/wiki/Rotation .

[Void Singer]

all LSL functions take and return (single) angles in radians..... so if you specify degrees, you have to multiply those values by DEG_TO_RAD, and if you want degrees in the output, you multiply the returns by RAD_TO_DEG.....

those two constants are just fractions that convert one measure to another.... like converting feet to meters and back. their values are (pi/180) and (180/pi) respectively, and describe the ratio of (pi[Radians] == 180[Degrees])

[Innula Zenovka]

---

Rolig Loon wrote:

It's not quite as easy as that. You need to be aware of your frame of reference whenever you work with rotations. Changing a rotation in the regional reference frame will have a very different effect from changing it in a local reference frame, relative to some other object or relative to an attachment point on your avatar.  This is probably the most complicated aspect of scripting in LSL.  To start learning, read

http://wiki.secondlife.com/wiki/Rotation

 .

---

Besides the wiki article -- which I've always found very helpful -- there's three tutorials over at SLU I strongly recommend:

http://www.sluniverse.com/php/vb/tutorials/62235-basic-introduction-rotations.html

http://www.sluniverse.com/php/vb/tutorials/62479-introduction-rotations-translations-rotation-tutorial.html

and http://www.sluniverse.com/php/vb/script-library/40698-kept-simple-rotate-object-towards.html