Quaternary rotation

[Siofra Alter]

Does anyone know of a good explanation for how to set quarternary rotations for the spatially challenged?  I've been trying to set x=90, z=180 for a while to use a sculpty cushion as a poseball and I think I'm running out of both hair and spinal fluid...  help?

[DoteDote Edison]

A function you can use is llEuler2Rot(). There are good explanations on the old wiki.

Rotations: http://lslwiki.net/lslwiki/wakka.php?wakka=rotation

Quaternions: http://lslwiki.net/lslwiki/wakka.php?wakka=quaternions

[Siofra Alter]

lordy my brain hurts - I haven't dealt with sine and cos in over 20 years...  the crap we go through to save prims *sighs*

 

Anyone want to write a utility that reads a rotation and tells you want it is? LOL

[DoteDote Edison]

I use a simple utility script when all I need is a hardcode rotation. Set a prim the way I want, drop it in, copy/paste results.

default {   state_entry() {      llOwnerSay("Rot: " + (string)llGetRot() + " / Local Rot: " + (string)llGetLocalRot());   }}

 

[Siofra Alter]

thank you!!

[Innula Zenovka]

You can do the conversion you want this way:

rotation rot = llEuler2Rot(<90.0,0.0,180.0>*DEG_TO_RAD);

That is, take the <x,y,z>  value in degrees, turn it into radians by multiplying by the constant DEG_TO_RAD and then tell lsl to convert that into a quaternion for you. 

Void's rotation page is really useful https://wiki.secondlife.com/wiki/User:Void_Singer/Rotations  and Grandma Bates has recently put up two very helpful tutorials on SLU, Basic Introduction to Rotations and Introduction to Rotations pt 2

[Dora Gustafson]

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Siofra Alter wrote:

Does anyone know of a good explanation for how to set quarternary rotations for the spatially challenged?  I've been trying to set x=90, z=180 for a while to use a sculpty cushion as a poseball and I think I'm running out of both hair and spinal fluid...  help?

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For sitting you don't need to loose your hair:smileyvery-happy:

You just pick up the free Easy SitTarget Tool at the market place

Way back I pulled out my hair trying to find correct llSitTarget parameters

That was before I learned that the function is buggy and before I learned how to work around the bugs

Discussions about the bug and it's correction:

http://forums-archive.secondlife.com/54/09/242119/1.html

http://forums-archive.secondlife.com/54/6a/153963/1.html