Applying same edits to multiple Parts of an objects at once

[Anonymous]

Hello Everyone!
Is there any way that i can apply same edits to multiple parts of an object at once?

in the picture below I want to apply the same edges (green) to other part of objects (red) at once.

[moshibadalov]

I don't know of a way to make edits with radial symmetry, unless you create Instances with Duplicate Special, which requires each spike to be a separate object with their pivot points located at the collective center. Then you would use Mesh>Combine to connect the spikes back to the central structure and Mesh>Merge to merge all shared vertices.

This guy does just that:

https://www.youtube.com/watch?v=Mu9Ice4g2Tk

There might be scripts out there for radial-symmetry editing but as far as I know Maya only recognizes planar symmetry.

[Anonymous]

Leaving Radial Symmetry aside, whats the problem with the instances one? isn't that a better way?

[mcw0]

You would have to script this.  And with scripting, there would be multiple ways to achieve your desired results.  One way has already been mentioned.  Another way would be to insert edge loops and move the resulting vertices.

[moshibadalov]

The instance method's only issue is that once you combine and merge all geos, you lose most of your freedom to make radially symmetrical edits. This is what they call "committing" to your geometry. In most cases, if you want to go back and make edits after already merging (ie, committing), you have to delete all new faces merged with your original instance and redo the duplication/merging process. Not really a 'problem' but just takes a few extra steps to make new changes. Also, as mcw0 has stated, you can add idential edge loops to all your spikes. I would do this by holding down ctrl+shift when using the Mutli-Cut tool. This is a great way to divide edges perfectly in half, or in increments of 10% or whatever you set it to.

[Anonymous]

a bit late to reply but i found out that the best way to transfer changes from one object to any other object ( to make it look like one ) you can use ( Modify > Replace Objects) and It worked as exactly as i wanted (though it was a bit messy at first).

I could not check your given video link, i was a bit busy but I will check that technique too but i think the replace objects is solely for this purpose that i was looking for.