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View Full Version : LW11: trying to understand pivots. Help, please?



Spinland
12-30-2012, 10:33 AM
I thought I understood pivots, but a couple of issues reveal I really don't. Googling simply overloads the search with unrelated results based on the more common words, so I'm hoping to find some help here.

1. I brought an OBJ into Modeler but it wasn't centered on the origin like I wanted. I then used Center Pivot and it placed the pivot exactly where I wanted it; but, then when I used F2 to center the object it does not move the new pivot point to the origin as I expected, rather moves so an arbitrary point above and behind the new pivot point goes to the origin. Isn't it possible to center the object on the pivot point/center of the the object?

2. There seems to be a disconnect between the pivot point in Modeler and in Layout. If I move it in one of the applications and then sync between them the new position is not reflected in the other application. Are the two pivots not supposed to be one and the same?

Many thanks in advance.

erikals
12-30-2012, 11:00 AM
1.
not possible afaik, you have to go about it the other way around.
move the pivot to the center of the object.
check the first 40secs of this video > http://www.youtube.com/watch?v=gxnacwZdOBo

2.
welcome ;] hehe, you are not the first one to encounter that one :]
good info from D.W. Burman > http://www.youtube.com/watch?v=3IdQmqin1J4

erikals
12-30-2012, 11:32 AM
1.
update, ok, possible, but takes a bit time...

Lightwave test - Center Object on Pivot
http://youtu.be/Bep30K5ZlAk

Spinland
12-30-2012, 12:04 PM
Thank you, those first two videos answered most of my questions. I really appreciate the third one, but I think I asked that part poorly. I guess what I'm asking is when you press F2 to center an object, how does Lightwave decide where the center is that moves to the origin coordinate? In the case of the OBJ I imported, when I press F2 the origin point ends up completely outside the model and I would like to correct that.

Thank you very much!

erikals
12-30-2012, 12:31 PM
think of it as making a box around all the points/polys, then that box is moved to the center. :]

now, if a point/poly is way outside the model, it won't look centered.
so, most likely you have a point or poly (a small poly maybe) that has been left behind somehow.

http://youtu.be/M0yO7Swpu4E

Spinland
12-30-2012, 12:50 PM
Ah, okay. I completely understand now. Thank you again!