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I like to create a animation where a "bullet-like-objekt" hits an object ("cube") and then the object shall expand from the bullet. And when the bullet goes through the object shall enter the normal state again.

Here is some prints of how i like to have it:

Normalstate: When the bullet is outside of the cube

Inside 1: When the bullet have entered the cube

Inside 2: When the bullet is about to exiting the cube

On the other side: When the bullet is on the other side of the cube

I just trying to understand how the object can interact with eachother so I then can make an animation.

Thanks!

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    $\begingroup$ You can use Cast modifier for Cube and set bullet as Object in modifier to controll effect. docs.blender.org/manual/en/latest/modeling/modifiers/deform/… $\endgroup$
    – vklidu
    Apr 20, 2021 at 6:56
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    $\begingroup$ Thanks, that helped it! I just need to learn the modifier and then I thinks it will be awesome! $\endgroup$
    – Woothz
    Apr 20, 2021 at 7:12
  • $\begingroup$ Cast modifier as Vklidu says, Lattice modifier would work as well $\endgroup$
    – moonboots
    Apr 20, 2021 at 7:19
  • $\begingroup$ or you use shape keys ;) $\endgroup$
    – Chris
    Apr 20, 2021 at 7:31
  • $\begingroup$ @moonboots and then scale the lattice after the bullet? I dont understand the Lattice function in this :) Chris: Ah yes the shape keys! Well I tryed but I found it very hard to get a good solution. $\endgroup$
    – Woothz
    Apr 20, 2021 at 7:35

1 Answer 1

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As Vklidu says you can use the Cast modifier, you can also use the Lattice modifier:

Create a lattice, scale it in Object mode so that it can contain the cube object that it is supposed to deform, put it at the same position as the bullet, parent it to the bullet, give your lattice a bit of Resolution in the Object Data panel, modify it in Edit mode so that it has the deforming shape you want, give your cube object a Lattice modifier with the lattice as lattice Object:

enter image description here

Now when you move your bullet the lattice follows and deforms the cube:

enter image description here

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  • $\begingroup$ It seams kinda tricky to use Lattice, the cube follows the bullet if i move it along the Z-angle. But I believe it to be my experience with Lattice and Blender thats need to be better! Anyhow thanks, it solved my problem! $\endgroup$
    – Woothz
    Apr 20, 2021 at 9:34
  • $\begingroup$ yes you're right if the bullet moves on the Z axis it won't work fine, so Cast modifier is probably the best solution if you need a more complicated movement, it will wok fine for a simple deformation $\endgroup$
    – moonboots
    Apr 20, 2021 at 9:41
  • $\begingroup$ you can play with the modifier's Strength value though, it may help if you want to deactivate it $\endgroup$
    – moonboots
    Apr 20, 2021 at 9:47

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