Join David Andrade for an in-depth discussion in this video Destroy everything with dynamics, part of Blender: Tips, Tricks, & Techniques.
- [Instructor] This week on Blender Tips, Tricks, and Techniques, we're going to go over cracking and destruction. Now, believe it or not, it's really easy to do cracking in Blender. Let me show you how. First, you're going to want to delete this cube, add our good old Suzanne monkey, and let's just put it up here really quick, and add a plane. We'll scale up this plane a little bit. Now, you'll want to go to File, User Preferences, type in Cell, and you want to turn on the Cell Fracture Modifier.
There we go. Go to Save User Settings, exit out, okay. Now with the monkey selected, let's zoom in, and hit the space bar and type in Cell Fracture. You actually just need to type in the first few letters and click OK. It's going to bring up a new menu here where you can type in a lot of really cool settings, so I'm going to generate a whole bunch of little cracks, right? You know what, maybe we'll turn up the source limit a little bit, we'll turn up the recursion, we'll set that to 300 too.
And let's set it to, well, we'll keep it at Small for right now. Okay, now just click OK. In the background, you'll note that Blender is starting to generate all the geometry. This will take just a few seconds. All right, now on the Layer One, we have our plane, and our original monkey. But on Layer Two, you'll see this brand new monkey. Pretty cool, right? If I select all of them and go to the Physics tab, I can go, well, actually, I need to select at least one object by hand.
There we go. I can go to Add Active, and just to be safe Copy From Active. Now from Layer One I want to move over this plane, so let's do that. And this plane is going to be add passive. And that's it. Now all we have to do is hit play. Boom, look at that. Pretty cool. So if we go back to the beginning, we can select one of these little chunks and open up the right side tab here and go to Physics.
And for good measure, I'll hit B, draw a box, and select everything else. There we go. Now, here is where we can do a lot of cool things like play with friction, add a little bit of bounciness if we want to, maybe dampen some of the rotation so it doesn't rotate as much. And then we copy from active. Now let's see what we get.
There we go. It doesn't rotate as much, but some objects, especially this little one, are just sitting there dancing. So let's click Pause, go back to the beginning, and just dampen it a little bit more and maybe a little translation dampening too. We'll pull back on the bounciness. All right, click on Copy From Active and hit Play. Boom, look at that. Now you'll note that some of the objects actually fell through the ground.
That's because they were inside and Blender didn't know what to do with them, so it just decided to throw them through the ground. That is where coming in here and playing with all of these little settings and tweaking them can come in play. You can also click on the passive plane here, and raise up some of the friction and maybe a little of the sensitivity. That way not as many objects will actually flow through the ground. Another thing you can do, if we stop this really quick, is to actually make this little hole.
So if I go to Modifiers, I can go to Solidify, give it a little bit of thickness, so now it actually hits something with thickness. And go to Play. Crack. Look at that. Pretty cool. You can do this with any object in Blender. In fact, Destruction is so easy to use in Blender we do it all the time for visual effects. I hope you enjoyed this week's Tips, Tricks and Techniques video, and have fun getting in there and breaking stuff down.
Skill Level Intermediate
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