Integrating 3D models with photography
Interested in integrating your 3D work with the real world? This might help
# 1 13-12-2002 , 11:49 AM
aten's Avatar
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scale axis

Hi, anyone know a good way to scale along an arbitrary axis. Say in the pic here i wanna scale that arm along an axis that follows the direction of the arm rather than the global x,y,z one. Seems you cant change the pivot? In Max it would let you pick another object's axis to scale around surely you can do this in maya too!?

cheers - Aten.

# 2 13-12-2002 , 04:26 PM
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Good Question!
I want to know this too!!!

Anybody?


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# 3 13-12-2002 , 04:34 PM
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I believe I know, but I need to confirm... I'll get back to you. user added image

# 4 15-12-2002 , 11:51 AM
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ooh interesting, mines seem to use local coordinates all the time when scaling
you would expect there to be an option for the scale to be run using world and object


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# 5 15-12-2002 , 12:49 PM
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Here is a trick!

I think I used this once or twice.

Instead of trying to manipulate the pivot points axis';
1) Make a primitive
2) Rotate the primitive to align it to the objects you are about to scale bigger
3) Parent the whole thing to the, say a cube.
4) Adjust the cubes pivot point if needed, to make your bunch of objects scale bigger or smaller from a certain centerpoint.
5) Then scale the children by scaling the parent cube.

I'm sure this works. Your objects will inherit the scale-axis' of the cube.


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Last edited by undseth; 15-12-2002 at 12:51 PM.
# 6 15-12-2002 , 12:51 PM
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Ok, I took a look at this...

When you create an object and try to scale the vertices, it will scale along the object.

UNLESS

You've frozen transformations... Freezing transformations makes the object "freeze" at its current position and resets the channel controls back to default, which when you created the object were aligned with the world coordinates. So, it's still scaling with local coordinates, but your local axis happens to match your world axis...

Hope that made sense. user added image

# 7 16-12-2002 , 09:37 AM
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Yeah the parent thing worked, but it doesnt work on a selection set of verts unfortunately - only at object level. Seems stupid you cant change the scale axis easily - should tell A/W. I was thinking there must be a simple way of doing it if no-ones missed it til now.

cheers.

# 8 16-12-2002 , 02:37 PM
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isn't this something like Local Axis Rotation?

-Emo

# 9 16-12-2002 , 03:56 PM
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Try this I am not sure if this is what you want ?

go to Modify/Tranform Tools/Move Normal Tool

Try it user added image


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# 10 16-12-2002 , 04:32 PM
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Not quite, I tried it and got something close but the normals aren't exactly aligned in the 2d plane so they go off a little bit skewy.

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