×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!
  • Students Click Here

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Students Click Here

Jobs

Rotate - what controls the center point?

Rotate - what controls the center point?

Rotate - what controls the center point?

(OP)
What controls the center point when you "rotate" a model?

Is there a way to choose the point when rotating?

Thanks

RE: Rotate - what controls the center point?

Use the middle mouse button to move the selected element to the center of the screen. This will become your new center of rotation.

RE: Rotate - what controls the center point?

Using your left mouse button, click on a point and thats your rotation center!

RE: Rotate - what controls the center point?

Kevwoogs: you must have customized your mouse settings! (or maybe you have a 2 button mouse?)

It is the middle mouse button, and all rotations are about the center of the screen. As you rotate you will see 3 orange lines at the center of rotation along with a spherical circle, unless you have geometry in front of them.

If you rotate with the cursor inside the sphere, you get a 3D rotation. If you rotate with cursor outside the circle, you get a 2D rotation in the plane of the viewport.


RE: Rotate - what controls the center point?

(OP)
So is there a way to have the part rotate around it's centroid by default?

Also, is there a way to pick a point on the model to use as the center or rotation?

RE: Rotate - what controls the center point?

Jackk - I agree, I was a bit hasty in my reply. I also didnt see your response when replying!

QuasiMoto - Yes. If you tap your mid mouse button on a point in the model, it becomes the CoR.

RE: Rotate - what controls the center point?

(OP)
[QuasiMoto - Yes. If you tap your mid mouse button on a point in the model, it becomes the CoR.]

Thanks!

Is it actually a point on the model, or some imaginary point with respect to the view. (Not in front of my PC right now)

On a related note, I hooked up my spaceball today, and am finding it doesn't work as well in rotate mode as other modelers I have used. When zoomed in close, the rotate mode is fairly worthless because the part does not rotate around it's centroid, but rather some unexplained point way out in space????

Any tips would be appreciated here as well!

RE: Rotate - what controls the center point?

If you middle-click on some geometry, this will re-center it in your screen and make it the new center of rotation.  

If you middle-click off the part or somewhere out in space (which I would NOT recommend) you will rotate about some point off in space and this often causes extreme rotations and the part to rotate off the screen very rapidly.  

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members!


Resources