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When do you use uniform scaling?

The mgear root guide has an uniform scaling setting.
I’ve never been in a situation where I have to turn this on.

In what circumstances do you need this option?
I wonder what kind of option it was made for.

As far as I know, it’s mostly for game engines. For example Unity calculates non-uniform scaling differently than Maya. Unity doesn’t have segmentScaleCompensation like Maya does, so if you send non-uniform scaling into Unity, limbs will skew and look very strange.

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For Unreal engine, any sort of scaling is fine, no problems at all. The scale, like any transformation, is baked and sampled every single frame and reproduced perfectly during run-time. Cheers

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I understand what the problem is. Thank you.