hello and welcome back to virtually crafted if you've ever wanted to add dramatic effects to your 3D models like shattering glass or crumbling buildings then you're in the right place I'm Kevin and today we're diving into one of blender's most dynamic features the sell fracture tool this powerful tool allows you to break your model into pieces creating stunning visual effects let's get started first let's understand what self fracture is take a look at the official blender documentation in blend
er cell fracture is a feature designed to break or shatter objects into smaller fragments mimicking real world destruction whether for animation game design or visual effects it adds a layer of realism to scenes involving impact or Decay let's head back over to blender to begin select the object you want to fracture for this demonstration we'll use a basic Cube make sure your object is selected then head over to the object menu navigate to Quick effects and choose cell fracture we agree Ed by th
is menu that has a lot of options but don't worry the top row is primarily where the cuts should start you can set limits or add noise which we'll do later next you'll see recursive and more limits which basically will allow your model to be cut again after the initial Cuts here you'll also be able to Define material offset for cuts here DEC to fracture your Cube you'll see here that our Cube fractured into Parts called cells in the hierarchy each one is just another Cube pretty neat but not exa
ctly what we were looking for let's delete the sales we made click your Cube again and let's give it some materials we'll give it two materials one for out of material and one for inner the inner material is the one we will tell sell fracture to use customize these to look however you like I'm going to go for a sort of water melon look with green on the outside and red on the inside repeat the process to fracture the cube but this time let's turn up our noise to one this will introduce Randomnes
s set the material index to one this means it will grab your second material for the cuts since zero would be the first material once your object is fractured again you'll notice it looks a lot different with materials on you can see how the cuts made the inside use your defined internal material the cuts are also a lot more random hide your original keboard elet it and move your cells into a new collection called cells this is where we can have some fun with our new fractured objects add a plan
to your scene and increase its scale select all your cell objects and then click object rigid body and add active this will give each object a rigid body the same can be done through the physics menu for each object then give the plane a passive rigid body this can be done both ways hit play now our Cube cells fall onto the plane and break apart this is only the beginning of what's possible with cell fracture note that if we increase the height of our cells they break apart with more Force this
makes sense because they have more velocity the opposite goes for if we bring the object to ground we can mess with this a little bit by adding it a force field go ahead and add in an empty object be sure to place it outside of your cell's collection go to the empties physics Tab and add force field currently it's too weak to push away ourselves increase the power to see how it works out you can also turn off gravity in the scene menu for a more explosive effect Neo there are a lot of physics t
ools at our disposal but we're going to switch gears here and explore the use of geometry nodes with cells delete the plane in your scene and add in another new plane to the main collection move it off to the side next open a window or slide over a window for geometry notes with your plane selected add a new geometry note I'll cover geometry nodes in another video but just follow along today to get a sample of how they can be mixed with cell fracture for seemingly complex effects add a collectio
n Ino node and Link it to the output select your cell collection in the info node set to relative and separate children now hide your cell collection you'll notice you can still see the cells this is because the plane is now using the cell collection information for its geometry you can do some pretty interesting stuff with geometry nodes but for now let's just throw in a scale instances node scale instances does exactly what it sounds like it scales each instance or in this case each cell by ce
rtain factors defined in the node this can be done individually or together you can also rotate them by adding in a rotate instances node or move them with Translate we're going to try scaling them dynamically based on proximity to another object so add in an empty object name it so you recognize it go back to your no plane and drag in your new empty so it pop your lights with object information and in a position node as well to be able to input the position of the plane set to relative and as i
nstance this will be used with a vector MAF distance node plug it into scale and see what happens what a monstrosity we'll need to map the range of this node to affect scale in a more desirable manner for better results use a map range node for better results on this we'll set it to step smooth and map it from0 to two that's looking better already but I want the effect to be stronger I'll change it from two to three here I think that's pretty good now when we move around our empty we can affect
the scale of the cells from our original fractured object there's a lot you can do with sell fracture in combination with many of the tools blender has to offer I hope today you learned a bit about a few options available to you if this video helped you or you enjoyed the video please give give me a like and a subscribe if you would like to see more tutorials let me know in the comments this has been virtually crafted thank you for watching and have a great day
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