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Old 02-26-2013, 01:22 PM   #1   Add To Ignore List  
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Default Make holes in meshes

Hello. I wanted to ask if it's possible to make a hole in already existing mesh of mine in SE3.5 (like for example in Source SDK). Example of use: I created a sphere, and now I want to make an entrance in it.
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Old 02-26-2013, 02:49 PM   #2   Add To Ignore List  
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Default Re: Make holes in meshes

I have wondered this myself but never bothered to look into it.
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Old 02-26-2013, 02:56 PM   #3   Add To Ignore List  
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Default Re: Make holes in meshes

I think there's an extrude CSG thingy somewhere that would do this... not sure.
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Old 02-26-2013, 03:50 PM   #4   Add To Ignore List  
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Default Re: Make holes in meshes

There's a bevel tool in the "Add" tab (iirc) in mesh editor that can be used to create such holes that go in one direction, just click and drag to shape it. Another method is to simply delete the polygons forming the doorway, select and copy ALL of the polygons (Edit -> Select All + Ctrl+C), then flip the polygons (should be in common tab -> Flip polygons), and paste the polygons you copied before (Ctrl+V): this way you get the same polygons on both sides of the mesh, however you may still need to add some space inbetween for the illusion that it's an actual wall (maybe beveling could help with that too?).

Also all of that may require messing with uvmaps, bevel especially WILL break existing models if you just start beveling stuff, so you need to redo the uvmaps to account for the changes. Best bevel everything before attempting uvmaps.

Another tool that does basically the same thing is Extrude, but I haven't used it much myself as it's more difficult to use and doesn't physically move the selected polygons, but creates some kind of continuation from it (iirc). If you need precise cutting of polygons there was an Edge Cutter tool or something like that in the SED2 help files, I've been just using the knife tool myself.

Last edited by Finzy; 02-26-2013 at 03:55 PM.
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Old 02-26-2013, 04:33 PM   #5   Add To Ignore List  
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Default Re: Make holes in meshes

Normal Shift.
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Old 02-26-2013, 06:18 PM   #6   Add To Ignore List  
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Default Re: Make holes in meshes

Thanks for all the answers.
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