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Poser - OFFICIAL F.A.Q (Last Updated: 2024 Nov 26 6:57 am)



Subject: Center of Rotation


LindaB ( ) posted Wed, 09 June 2010 at 5:50 PM · edited Tue, 26 November 2024 at 12:31 PM

file_454185.jpg

Is there a way to reset the center of rotation for models in Poser? I've attached a screen shot showing the view through the top camera. You can see the circle denoting the center of rotation, with the model well outside of it. This makes positioning and posing a real pain. Is there any way to correct this from within Poser?



richardson ( ) posted Wed, 09 June 2010 at 6:09 PM

I'd start by turning off IK and zeroing the Xand Z axis from hip and figure. Then resave it as a pose and then as a new figure.
Is it more complex than this? Hard to tell..


LostinSpaceman ( ) posted Wed, 09 June 2010 at 6:14 PM

The Joint editor would be the place to do the above correction.


LindaB ( ) posted Wed, 09 June 2010 at 6:39 PM

Quote - The Joint editor would be the place to do the above correction.

I can't figure out how to do that in the joint editor. I tried selecting the body, setting the center point parameters to zeros, clicking align,    ....nothing. I have very little experience with the joint editor, I don't know what I'm doing so it's just trial & error.



ockham ( ) posted Wed, 09 June 2010 at 8:23 PM · edited Wed, 09 June 2010 at 8:24 PM

Start by using the Top camera for accuracy.  Select the body.

Open the Joint Editor (alt-W-J) and then locate the green cross.
Grab the green cross with the mouse (cursor will turn to a black bulls-eye thing
when it's grabbed) and move it to the "bottom center" of your model. 

You may have to zoom in a couple of times to get an accurate center,
if the original center is way out of bounds.  After zooming, be sure the
Body is selected again.

The X and Z will generally not end up at zero, but you can manually set the Y to zero.

Resave the model.

(Note: the Align button sounds like it should be useful here, but it's really
meant for lining up the start and end of a bone to point the same way.)

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LostinSpaceman ( ) posted Wed, 09 June 2010 at 8:37 PM · edited Wed, 09 June 2010 at 8:38 PM

Quote - > Quote - The Joint editor would be the place to do the above correction.

I can't figure out how to do that in the joint editor. I tried selecting the body, setting the center point parameters to zeros, clicking align,    ....nothing. I have very little experience with the joint editor, I don't know what I'm doing so it's just trial & error.

LOL! Ya know what? I just looked and I can't figure out how to move the body circle with the joint editor either so just ignore me. My bad. I know how to move the body center but it doesn't appear to affect the circle. Maybe it has to be saved and reloaded before the circle moves.


geep ( ) posted Wed, 09 June 2010 at 9:00 PM · edited Wed, 09 June 2010 at 9:02 PM

Attached Link: http://www.drgeep.com/p4/figcir/figcir.htm

file_454195.gif

Yes ...

Click the link above the image and then ...

... see Pages 4. 6. and 7. 😄

cheers,
dr geep
;=]

Remember ... "With Poser, all things are possible, and poseable!"


cheers,

dr geep ... :o]

edited 10/5/2019



RobynsVeil ( ) posted Wed, 09 June 2010 at 10:15 PM

Unless the model is part of a larger group of models, I do wish that modellers would take the time to make sure their items are zeroed in the modeling programme. I know that when I'm working on something, the object centre often-times gets left high and dry Way Out In Left Field somewhere. Make this surfboard that had this problem: it was a nightmare to pose!
Making sure it was centred made pitch and yaw and bank a lot easier to manage once in Poser.

Monterey/Mint21.x/Win10 - Blender3.x - PP11.3(cm) - Musescore3.6.2

Wir sind gewohnt, daß die Menschen verhöhnen was sie nicht verstehen
[it is clear that humans have contempt for that which they do not understand] 

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LostinSpaceman ( ) posted Wed, 09 June 2010 at 10:40 PM · edited Wed, 09 June 2010 at 10:41 PM

Quote -
Yes ...

Click the link above the image and then ...

... see Pages 4. 6. and 7. 😄

cheers,
dr geep
;=]

I have a new nickname for you Doc! It's Mighty Mouse! When I saw your post it was Mighty Mouse's theme song that popped into my head! "Here he comes to save the day....." LOL!


geep ( ) posted Wed, 09 June 2010 at 10:41 PM

2 methods that may be used to "reset" (re-center) a prop (object) ... (but not a figure) ...

  1. Use the Grouping Tool to duplicate* the object ...
    ... the "new" object will have it's parameters "reset" to zero,
    and it's origin in the center of the object.
  • create "New Prop"
  1. Use the "File" >>> "Export" >>> Wavefront OBJect...:" ... the prop (object) from Poser ...
    ... and then Import it back into Poser ( with ALL Import Optiions UNchecked)

cheers,
dr geep
;=]

P.S. For "resetting" a Figure, see the tutorial above.

Remember ... "With Poser, all things are possible, and poseable!"


cheers,

dr geep ... :o]

edited 10/5/2019



LostinSpaceman ( ) posted Wed, 09 June 2010 at 10:51 PM

That tutorial might be useful to the guy who posted the thread about moving conforming prop swords from one hand to the other too! It certainly explains why some of his moved props were not staying stuck to the new parent body part of the figure if their circle's were moved incorrectly.


lesbentley ( ) posted Thu, 10 June 2010 at 2:18 PM · edited Thu, 10 June 2010 at 2:21 PM

file_454245.gif

Yes, you can reset to position of the BODY's origin in the Joint Editor. But first make sure that all the translations of the hip (or what ever part is the immediate child of the BODY) are zero. **Translating the hip will move it away from the BODY's centre of rotation, and that might be what has happened in this case**. As a general rule of thumb, you should only move the figure in x and z by translating the BODY, not the hip. Also as a general rule of thumb, you should set the altitude of the figure via yTran in the hip, not the BODY, ***but flying things are an exception***, in that case the altitude should also be set by yTranslating the BODY.

If the hip is zeroed, and the centre of the BODY's rotation is still wrong, you can change the origin (center of rotation) in the joint editor.


markschum ( ) posted Thu, 10 June 2010 at 3:27 PM

if you were doing animations you had to use the HIP for translations because the BODY dials didnt save in a pose file. Thats now been corrected so using BODY for moving the figure is better. 

I suggest ockhams procedure , but once centered in top view, switch to right or front view and check the Y position of the center.

Moving the objects center can simplify animation , like a bird circling a tower. Just reposition its center and you can simply rotate it.


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