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I Was Recently Trying Making A 3D Falling Text into The Ground And Breaking Up Into Pieces . But I Had A Problem In Cell Fracturing. When It Is Finished It Was Very Bad.

Before Cell Fracture :

enter image description here

After Cell Fracture:

enter image description here

I Added To My Mesh A Remesh Modifier Because I Think That It Will Be Better But, Some Changes Only Happened And It Was not Perfect:

enter image description here

Actually This Problem Happens To Me Often In Blender And I Need Help Please. -Thanks-

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Final:

Final

Overview:

As for most of those issues the main problem lays in bad topology.

Example above is made from retopologized Text Object. It's not the best topology you can get but it should show you what you want to achieve finally. Quad based topology.

Topology

You can try to use Remesh Modifier. Check:

  1. better Curve/Text to Mesh generation?
  2. Change that convoluted font mesh

But those are examples for Text Object. As for more complicated meshes Remesh Modifier is not working very good.

Take my advice and start making meshes with quad topology in mind. It will pay off quickly.

My example was made by deleting inner part of each letter and then filling them with new quads by hand. F2 and LoopTools addons can help you a bit.

I'm not making How to retopologize Text Object answer as this is not a part of this question.

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To get rid of the bad default text topology, you could also:

1) Use remove doubles and

2) Use limited dissolve.

This will create n-gons, though, but the final geometry looks much cleaner.

Then you could add optionally a triangulate modifier, since Boolean operations can handle them a bit better than n-gons in my experience.

And finally you could use cell fracture OR you could use the Fracture Modifier, which gets you better results and is faster, but it is available in a separate build of blender only.

The Fracture Modifier can also operate directly on the text (and does remove doubles and limited dissolve as preprocessing step internally too) , but this might not work every time.

In this case you might convert to mesh, make remove doubles and limited dissolve.

Links to builds are here

https://blenderartists.org/forum/showthread.php?343637-Custom-Build-Blender-Fracture-Modifier

especially check the last thread page for the most recent linux build for example (made by jensverwiebe)

Edit: Result will look like this... with some constraints in Fracture Modifier (FM) and an edgesplit modifier after FM.

Text Fracture

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Thank You All For Helping Me In This But Actually , After A Long Time I Found The Answer :

I Didn't Add Thickness To My Text , I Convert It Into A Mesh As soon as I Typed it.

enter image description here

Then I Entered The Editmode And Selected Everything And Extrude Them.

enter image description here

And When I Made The Cell Fracture Without Changing In its Sittings. And Now :

enter image description here

It Became As You Can See . Not Having Any Problems. Actually I Don't Know The Reason For This But I Found This Way Which Can Be Useful In This Situation.
- Thank You All For Your Efforts -

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