Modifiers deform instances. Bug?

[skinnytorus]

Hi, all.
I noticed a strange behavior of modifiers (Place, Position Noise). When applied to instances they skew them.
See attached image. This behavior doesn't seem right to me. Is that a bug or not? If not, how the instance deformation can be prevented? Thank you.

[lamogui]

This behavior is not excepted.
I couldn't reproduce the skew with place modifier so I think there is no problem here.
Position noise generate Non-orthogonal referential that cause the skew (you can check that with a vertex referential renderer).

We probably need to introduce a way to regenerate referential from just position and normal.

Note: Position Noise is initially used with mesh to deform surfaces with correct texture deformations.

[skinnytorus]

Hi, @lamogui
I think all the Distort modifier group should be checked for that behavior.
Have a look at these setups. They all suffer from the same plague - deformation of instances.
However I would implement the fix by making an extra option 'Deform Instances' in each distort modifier allowing users to decide whether they want such deformation or not. Sometimes it's even fun

[lamogui]

For now I have done a tiny fix (option to normalize referential in Instantiate Modifier)
It will be available in the next version of smode

[skinnytorus]

Good. Thanks a lot. I hope it'll work fine now.