Break apart feature..does Blender have this?

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Roja
Posts: 0
Joined: Tue May 04, 2004 4:36 pm

Break apart feature..does Blender have this?

Post by Roja » Sat Nov 19, 2005 1:41 pm

Does Blender have a "Break apart" vertex feature?

Here's an image to try and show it better:
http://img.photobucket.com/albums/v59/f ... _apart.jpg

Basically the top planes all have their vertices welded together. If you click any vertex there, it acts as 1 vertex (so clicking the center vertex makes the planes move together).
What I would like to do is Break Apart that center vertex, or any vertex that joins 2 or more polygons, so that I can create separate polygons by pulling them apart(bottom image).

Does that make sense? Do you guys know what I'm talking about? Other 3d programs have this, as well as 2d vector programs..it's commonly called "break apart".
I've tried both Split and separate, but they don't do this. Is there anything that does? If not this would be a great new feature!

lusque
Posts: 11
Joined: Wed Oct 16, 2002 9:53 am

Post by lusque » Sat Nov 19, 2005 1:51 pm

Something similar is already in Blender 2.40alpha2, it is called "Mesh Ripping".

doc:
http://blender.org/cms/Mesh_Ripping.712.0.html

LetterRip
Posts: 0
Joined: Thu Mar 25, 2004 7:03 am

Post by LetterRip » Sat Nov 19, 2005 8:36 pm

actually the unweld script i believe does what you want and is bundled with blender 2.37a and 2.40alpha2

LetterRip

Zarf
Posts: 46
Joined: Mon Oct 14, 2002 3:54 am

Re: Break apart feature..does Blender have this?

Post by Zarf » Sun Nov 20, 2005 1:32 am

Roja wrote:Does Blender have a "Break apart" vertex feature?

Here's an image to try and show it better:
http://img.photobucket.com/albums/v59/f ... _apart.jpg

Basically the top planes all have their vertices welded together. If you click any vertex there, it acts as 1 vertex (so clicking the center vertex makes the planes move together).
What I would like to do is Break Apart that center vertex, or any vertex that joins 2 or more polygons, so that I can create separate polygons by pulling them apart(bottom image).

Does that make sense? Do you guys know what I'm talking about? Other 3d programs have this, as well as 2d vector programs..it's commonly called "break apart".
I've tried both Split and separate, but they don't do this. Is there anything that does? If not this would be a great new feature!
I have already started work on a feature like this only it uses edges as the basis of deciding how to split the mesh apart.

Some Pictures.

Example Selection 1:
http://www.umsl.edu/~gcbq44/prob1.jpg

After 'Edge Unweld':
http://www.umsl.edu/~gcbq44/prob1b.jpg

Example Selection 2:
http://www.umsl.edu/~gcbq44/prob2.jpg

After 'Edge Unweld':
http://www.umsl.edu/~gcbq44/prob2b.jpg

Those pictures were created by hand, but this is a feature I have wanted in blender for years, so I hope to have a finished patch within the next couple of weeks. Furthermore mesh ripping only deals with a very limited set of circumanstances, the algorithm I have designed should be able to deal with any configuration of mesh.

Cheers,
Xarf

Roja
Posts: 0
Joined: Tue May 04, 2004 4:36 pm

Post by Roja » Sun Nov 20, 2005 4:33 am

Thankyou very much guys!

The unweld script does work as I need.

Zarf good luck on the patch, the way you're designing it looks good too! Will you also make a numeric value entry or slider or something to determine how far away the edges should split? That would be very useful. For instance, I might want them to break apart, but stay right where they are..OR..I might want them to split farther apart, like in one of your pictures.

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