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Questions tagged [collision]

Blender has several physics simulations that support collisions, such as fluid and rigid body. Use this tag for questions about collisions in physics simulations.

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2 votes
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Blender 4.1.1 - cloth simulation remains distant from collision mesh

I'm using Blender 4.1.1 downloaded from the Blender site on Debian testing. I'm trying to use the cloth simulation and it works as expected; but the cloth remains something as 5 centimeters distant ...
Mirto Busico's user avatar
1 vote
0 answers
38 views

Collision with Inflated Bubbles: Error in Folds

I'm new to Blender and I wanted to ask if you have any tips to avoid the issue of collision with the folds of rubber balls. When I see it, strange pixels form and the fold isn't smooth. What do you ...
Simo_2ll's user avatar
0 votes
0 answers
18 views

How do I make a mesh deform only due to collision and not movement?

I have a complex mesh, and my goal is to have certain parts of the mesh deform while the rest stay rigid, and I need those deformations to happen only on collision with another object. I'm currently ...
Matthew Waters's user avatar
0 votes
0 answers
20 views

How could one have particles emitted when two objects meet?

In blender I want to be able to have a splash effect when a boat is in the water (a cube intersecting a plane essentially). I was thinking for this effect it could be that when these objects touch, ...
3Dd.ie's user avatar
  • 23
1 vote
1 answer
31 views

Smoke simulation

So i have this ventilation shaft with gate that closes. I was trying to get some to interact with gate closing but smoke still goes trough gate. And yes gate has collision (sampling 1 and thickness 1)....
DenyBoyLV's user avatar
1 vote
1 answer
65 views

Collision “Thickness Outer” and “Inner”

When you look at the Collision settings in Physics Properties, you’ll find Thickness Outer and Inner. I understand that Outer is an option to detect external objects like Cloth and SoftBody. However, ...
구원자's user avatar
2 votes
2 answers
80 views

Is it possible to apply physics in object mode?

"Here's the situation. I am not an animator or a video game creator, however, I have managed to learn how to use physics tools, rigid body, passive, active, gravity, collisions, etc. I was able ...
Jorge Velázquez's user avatar
0 votes
0 answers
56 views

Mesh Self Collision in Geometry Nodes?

I was wondering if anyone has already succeeded in building a self collision for simulations (or Repeat Zones) in Geometry Nodes. I have seen several videos for particle collisions on Youtube but none ...
Todes Digga's user avatar
0 votes
0 answers
14 views

Fixing the collision problem of ycb distractors with themselves as well as object of interest using rigidbody or other methods

TLDR: I am creating a synthetic dataset using physics positioning in BlenderProc following BOP Linemod format. Describe the issue I notice that the ycb objects that I use as distractor objects collide ...
Mona Jalal's user avatar
0 votes
1 answer
90 views

Geo nodes: Geometry transform on collision with another object

I'm trying to apply a transform to the geometry of an object when it collides with one another. Collision detection is made using Raycast. As you can see on the screenshot, there is a connection error ...
Alio's user avatar
  • 15
0 votes
0 answers
23 views

Physics simulations (upward collision)

I would like to carry out a physics simulation in my project: context, I have a cooler (ice cream freezer) and inside it is full of ice cubes, the issue is that I want ice cream to come out of the ...
Sebastian Bustos's user avatar
0 votes
0 answers
20 views

My cloth simulation isn't working

I wanted a similar cloth effect like a sheet over a body in a morgue. I followed https://youtu.be/OguGDqf9xgs?si=WmELp_6FLgy-Ucb8 his tutorial to achieve a similar effect in which he used a grid as ...
anitahanns's user avatar
0 votes
0 answers
26 views

Collision detection with sensor not working in specific case

Problem: I am encountering an issue with collision detection in Blender Game Engine while working with parented hitboxes. I am using the latest version of BGE on Windows 10. Details: Hitbox ...
Tylouw's user avatar
  • 1
-3 votes
1 answer
98 views

How can I create custom collision for this mesh

I don't know how to create custom collision for this helmet I was created in blender.I just only want to create collision on surface of this mesh . Here is my blender FILE
Thành Đạt's user avatar
1 vote
0 answers
15 views

Cubby Long and Cloth Simulation [closed]

There is an idea to create a full-fledged short cartoon about a chibi dude from Shaolin. The first episode is "A Dude Goes Down a Mountain to Get Water." The sketch can be viewed here. ...
Геннадий Горбач's user avatar
1 vote
1 answer
47 views

How to make coffee beans move on impact?

I've created a scene where coffee beans are on the ground, and a coffee package falls onto them. However, the issue I'm facing is that when the package falls, it only drops, bounces slightly, and that'...
Zig Zag's user avatar
  • 11
0 votes
0 answers
18 views

Fluid suddenly moves one direction + collision problem

I'm using Blender's Mantaflow fluid simulation. The fluid suddenly seems to move in one direction. I din't give any velocity to the fluid source My only guess is that the collider for the object ...
twilightstar's user avatar
2 votes
1 answer
86 views

How to hide collision shape lines in viewport?

I don't know what I'm missing, it should be totally simple and I found nothing about how to hide the collision shapes in viewport. (For some objects I chose a simple collision shape that doesn't ...
audi02's user avatar
  • 271
0 votes
0 answers
15 views

How to identify colliding faces/objects in the scene?

I have multiple objects in a scene I'm working on. Some of these objects are entering each other, I have to move my view to find where I need to make adjustments. Instead of having to keep changing my ...
Ogunlesi Taiwo's user avatar
0 votes
0 answers
37 views

How do I fix object collision points?

I'm having an issue where my object stops before it collides with its intended point, it is almost like it's running into the mesh, but it's not and I'm not sure how to fix it.
ThreeZeroSeven Productions's user avatar
1 vote
1 answer
53 views

Deforming a mesh with a rigged hand

I always wondered how to deform an object being grabbed , i usually use a shrinkwrap modifier for more simple collision, but it do not works very well for more complex cases...I also tried cloth ...
ShuLien022's user avatar
1 vote
1 answer
32 views

how to avoid collision while paper folding

how to avoid collision while paper folding
abdagir's user avatar
  • 11
0 votes
0 answers
23 views

Two separate cloth objects not colliding properly

I am attempting to make a few smaller balls to collide with a larger one at the centre, however, I encountered a problem where I can't make the larger ball to deform as smaller ones hit it. The ...
atkaizer's user avatar
  • 466
0 votes
0 answers
18 views

Collision dont work

The line goes through the hook instead of bypassing it. The line is made with a soft body. I added a collision to the hook. And in the soft body settings, I checked the self collision, but it still ...
Kogo's user avatar
  • 1
1 vote
0 answers
25 views

Why hit box doesn't move when using collision source with deform?

Initial state end state The box moved, but the hit box doesn't move, so the softbody hit the air. However, if I change the box's rigidbody>collisions>source from ...
mikumikumi's user avatar
0 votes
0 answers
19 views

problem with particles not coliding

I'm making a animation with balls rolling on a plane. I cant figure out how to get the balls to collide. Thanks, sincerely TC
T C's user avatar
  • 1
1 vote
1 answer
19 views

Gravity not affecting the Scene

I have a proj on uni to simulate an asteroid clashing on to another asteroid and shattering. I already have the collisions, cell fracturing of the shattering asteroid, animations, and gravity set to 0 ...
yunjin core's user avatar
0 votes
0 answers
19 views

trouble rendering cloth modifier

I made a cloth simulation with colissions that looks great on the viewport but when rendering it becomes weird . The animation its about a girl who opens her closet and a bunch of clothes fall. I´ve ...
Adrian Weber's user avatar
0 votes
0 answers
25 views

cloth simulation is not working properly

hey all so I have this plane , and I have two object with hair particle system on it , basically the cloth is not really working properly as the hair is going through the cloth , how can I fix this , ...
Games nr's user avatar
  • 405
0 votes
0 answers
96 views

Hair Collision with emitter object and other mesh (Blender 3.6)

I have an urgent issue - to create this hair I added an empty hair curve to the mesh of this figure. When combing in sculpt mode, I used sculpt collision but the hair still goes through the head in ...
Loe Wi's user avatar
  • 1
0 votes
0 answers
22 views

Soft body render heavily stutters regardless whether simulation has been baked

I have no idea as to why the soft body collision simulation keeps stuttering exclusively in render process. Regardless of whether I remove subdivision modifier, bake all dynamics or choose a different ...
thebigdum's user avatar
0 votes
0 answers
21 views

How to effectively use particle emitters on an animated mesh?

When baking my particle simulation to the animated mesh, it only emits the particles from the first frame of the animation and continues to emit from that point, while the mesh continues its animation....
1SEC's user avatar
  • 1
1 vote
1 answer
65 views

Problem with soft body collision animation

I'm new to Blender. How to make animation so that objects deform and interact with each other? I make a thread - collision, animate it and make a body - soft body, but it turns out not at all. The ...
Vlad's user avatar
  • 11
0 votes
0 answers
60 views

Soft body simulation going through mesh object with collision modifier on

I have an .obj that has a mesh cache and collisions modifier on it. however when I press play my soft body necklace falls right through the object. Any tips or advice would be greatly appreciated Link ...
Byond Entertainment's user avatar
0 votes
1 answer
45 views

While extruding, The model connects itself to other faces

I was trying to make a collider mesh for unity and just mapping out the map with knife tool then while cutting a building and extruding it when I clicked left clicked to confrim, it turned into second ...
S-ata-N's user avatar
0 votes
0 answers
28 views

Wings are not interacting with the object?

I have this character and as you can see the wings do not interact with the hive. I have collision and cloth on the wings, I created a vertex group and went to cloth-shape-pin group wings, but the ...
Games nr's user avatar
  • 405
2 votes
0 answers
67 views

How to create Cloth Simulation for Deflating a net wrapped around balloon in Blender?

I am trying to wrap a net (made out of torus shapes) around a balloon. As the balloon deflate, I hope to make the net get flat and flat (on the ground. I was exploring the inflate and deflate on ...
J13's user avatar
  • 55
0 votes
0 answers
121 views

In Pose mode, how to deform softbody according to the collision caused by the movement of bones?

The mesh called "Cube" is supposed to be a soft body, which has been parented to 6 bones: As the screenshot above shows, in Pose mode, when I rotate the bone, the mesh does not deform when ...
Blender Lake's user avatar
0 votes
2 answers
106 views

Make two objects fall together then "break apart" when hitting the ground

I have a coconut mesh with two sides as if it was cut in half. I can't for the life of me find anywhere online how to get them to fall together, without blender blasting them off into infinity at ...
Thai's user avatar
  • 21
1 vote
0 answers
115 views

In walk navigation, is there a way to prevent camera from walking through objects?

I am recording the camera walk navigation movement (Like a gameplay) and I don't want it to pass through walls and other objects. Is there a way to do that in blender? I also had the idea of adding ...
Malaz Usta's user avatar
0 votes
1 answer
53 views

Animating a rigid body collision with keyframes?

I'm new to physics in blender so I apologize if this is a trivial problem. I'm trying to make a sphere slowly push through a wall of bricks in zero-G. I set the individual bricks to Rigid Body, and ...
h_sharp327's user avatar
0 votes
0 answers
257 views

Is there a simple way to enable collision with geometry nodes?

new to geometry node, in the exemple below im trying to make the curves, instanced on points on the mesh going along the surface of the objets, the stripes are animated with a fake wind effect (wave ...
Sinane's user avatar
  • 1
1 vote
1 answer
57 views

Collision issue in cloth simulation

I'm just starting to learn Blender and while going through a tutorial I stumbled upon a problem that I can't solve. During the cloth simulation, the plane does not collide with the objects (couch ...
archiheart's user avatar
0 votes
1 answer
197 views

Distributing objects with random rotation without clipping

I'm not sure if this is possible, but I feel it should be somehow, but I want to fill a volume with instances with random rotation without clipping. Ideally, if clipping occurs, objects would be ...
lzro's user avatar
  • 11
0 votes
0 answers
301 views

Combing very small hair curves with collision enabled

When trying to comb hair curves I noticed that the Use Sculpt Collision option does not work properly for very small hairs. The following spheres have hair curves ...
TheBeautifulOrc's user avatar
0 votes
0 answers
57 views

Collision do not work with smoke

I have trouble with the collision when I’m doing a smoke simulation. It works fine if I open up a new Blender file but it doesn't work in my file that I'm working on and I can’t understand why. I want ...
David's user avatar
  • 15
0 votes
0 answers
63 views

How do i make my grass particles collide with other objects or have them not appear under where other objects are?

Sorry I'm a big blender noob. I have these flower objects, and i made a hair particles for the chunky grass around them. I want the grass to either avoid them OR not be in the areas where the flower ...
neatnik's user avatar
  • 15
0 votes
1 answer
74 views

Why do my particles keep spinning after hitting a collider?

I want to make an animation where bullet casings are ejected from a rifle, spins mid-air, hits the ground and eventually stops moving. The casings bounce properly, but their angular momentum is not ...
No_Tables's user avatar
0 votes
0 answers
18 views

Rigid body overlap instead of pushing during Z scale animation

I was experimenting with the Rigid bodies for an idea of mine. I hope to achieve animation of cubes falling and extending in the Z space. When the Z scale extends, it fuses with the other cube object. ...
Dark GT's user avatar
  • 35
0 votes
1 answer
175 views

Help with Mesh Intersection/character self collision

I know this issue has to do with weight painting but she's already weight painted so I don't really understand how to use that to solve this? It happens with the whole body in general when she moves. ...
Secondlife01's user avatar

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