Center Pivot and Freeze Transformation

[Anonymous]

Sorry if this is a stupid question, I wonder, when I center the pivot, it gets to one spot, but it's not until I freeze transform first and then center pivot that it gets to the real middle, why is that? What does freeze transform do to change the center of the pivot?

[mspeer]

Hi!

Please upload a scene-file.

[Anonymous]

when i center the pivot on the dragon it's not at the same place as if i freeze transform and THEN centr.

[mspeer · Accepted solution]

Hi!

Check Bounding Box before and after Freeze Transformations:

[Anonymous]

Yeah, when it's not freezed then it has the right scale but doens't fit because it's not at the right location, but when I have freezed it, then it fits.

[mspeer]

Hi!

There is not only one "right" position, both bounding boxes have different centers.

You can even center the pivot manual.

Just set the pivot to the place where you want it to be.

[Anonymous]

the world axis is set when it's at freeze transformation and bounding box view.

I still don't understand the relationship, how come the bounding box changes because of freeze transform?

[mspeer]

Hi!

That's what Freeze Transformation does, it resets the values based on world axes or in other words you loose the local transform / orientation ( based on your Freeze Transformation settings).

Just create a cube, select all faces, then enable Bounding Box display and rotate the faces (still selected).

You see how the Bounding Box changes (that's the reversed effect but related to your problem).

[Anonymous]

But, so, if I freeze transform, the world space becomes object space? Because the current position is now the center?

But shouldn't the center of the object in worldspace, be the same as center in object space? Why is the center changed, just because worldspace becomes 0,0,0?

[mspeer · Accepted solution]

Hi!

This should clear it up.

[mspeer]

Hi!

Just another example with more rotation applied.

You'll get a totally different position for the center cause of the rotation of the object in relation to the Bounding Box orientation.

[Anonymous]

So when it's rotated, and without freezing transformation, the center is as it would be if the bounding box followed the rotation?

But when you freeze transform, then the center becomes where it would be if the bounding box is not rotated with the object?

[mspeer]

Hi!

Correct.

When you use Freeze Transformation:

- with Rotation enabled, Maya "treats" the object as being now properly aligned to World Space axes.

- with Translation enabled, Maya "treats" the object as being now at World Space origin.