grouping and parenting

# 1 25-05-2003 , 02:32 AM

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Join Date: Sep 2002

Location: Lincoln, UK

Posts: 79

Hi,

I'm confused about grouping and parenting. In the following picture I have created two blocks (top pic) and moved the pivot point of the right block to its left end.

In the middle pic I've parented the right block to the left one, and tried to rotate the right one, only to find that instead of rotating around its pivot point it shears to a bizarre shape.

If I instead group the two blocks (3rd pic) then I get the result I was expecting.

Is this normal ? How do I get a result like the 3rd pic with parenting rather than grouping ?

Thanks,
Pete.

user added image

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# 2 25-05-2003 , 02:42 AM

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Join Date: May 2003

Posts: 2

If you're looking to just rotate the right block, you don't really need to parent or group anything. Parenting is used for when you want the right block to move when you move the left block.

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# 3 25-05-2003 , 02:51 AM

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Join Date: Sep 2002

Location: Lincoln, UK

Posts: 79

hehe.... I want that to happen too user added image

That was just a cut down version test model. If I add another block it looks like:

user added image

I still get this shearing when I parent rather than group ?!!

Pete

Last edited by badbunny; 25-05-2003 at 03:00 AM.

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# 4 25-05-2003 , 06:06 AM

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Join Date: Dec 2002

Location: Seattle, WA

Posts: 1,154

The shearing is usually caused by non-uniform scales. Make sure all the scale values on the blocks are the same. Simple solution is to Freeze Transforms on the blocks (you can affect only the scale attribute in the Freeze Transforms options box).

Danny Ngan
Animator | Amaze Entertainment
my website | my blog | my job

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# 5 25-05-2003 , 09:27 AM

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Join Date: Sep 2002

Location: Lincoln, UK

Posts: 79

Cheers, the fact that I had scaled the objects is the problem ! If I create the blocks of the right size without scaling, then parent, then it works fine.

user added image

I just looked up freezing in the online help, and tried doing that to the scaled blocks before I parented them, but I still get the shearing. Any idea why ?

>> Solution = I'd only freezed the transforms of the two right hand blocks. I also had to freeze the transforms of the parent of the child I was rotating.

Cheers,
Pete.

Last edited by badbunny; 25-05-2003 at 09:45 AM.

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