Questions tagged [collision]

The tag has no usage guidance.

111 questions with no upvoted or accepted answers
Filter by
Sorted by
Tagged with
8
votes
1answer
173 views

How do you avoid dependency cycle between two soft bodies?

How do you setup two softbodies with collisions without getting a dependency cycle ? A depends on B through Softbody Collision B depends on A through Softbody Collision Those two objects interact ...
4
votes
0answers
240 views

Rotate object when colliding

I have a question regarding collisions in blender. I'm trying to animate shortwave radiation (particle system) which reflects on different materials. However when i apply a collision the 'solar ...
3
votes
0answers
55 views

Collision Object for particle system

The hair you see in the picture is created with a particle system on a vertex group. The hat is a separate object. Is there any way to make the hat a collision object so that the hair stops when it ...
3
votes
0answers
69 views

Solve Burr Puzzles in Blender?

There is a great software called BurrTools for the automated solving of burr puzzles, it is however sometimes a little bit cumbersome to work with. I do not think that there is any equal function ...
3
votes
0answers
228 views

Calculate collision point of rigid body in BGE

I have a sphere (active rigid body) that bounces on a plane (passive rigid body) and afterwards hits another plane (passive rigid body). I would like to get its coordinates when it hits the second ...
2
votes
0answers
53 views

How do I make a squeezed balloon?

Is there a scientific way to have a balloon squeezed as if between two planes (or in a vise)? In other words, have the sphere maintain its volume while it is deformed between two parallel planes? [...
2
votes
0answers
33 views

Intersecting problem with rigid bodies

There is a mechanism shown in the figure_1; a rotating gear interacts with a grip. There is no problem (figure_2) until I change the grip shape with the same setting as previous, where the model ...
2
votes
0answers
74 views

Trigger particle emission on collision with another particle system

I have a particle system A whose particles have been already emitted. Now when these particles collide with Particle Emitter B, I want B to start emitting particles. How should I go about doing this?...
2
votes
0answers
233 views

Smoke/Liquid Ignoring collision object during simulation

I’m fairly new to Blender and modeling in general, and I’m running into trouble with running simulations (smoke, fire, liquid, etc). I’m trying to produce simulations to be used in a projection ...
2
votes
1answer
215 views

How to propel an object, rotating freely in zero gravity, towards a collision with a fixed plane?

I downloaded a model of an astronaut from the NASA website, and I'm trying to create an animation with it to import into a Premiere video project, but I'm just a beginner at Blender and am having some ...
2
votes
0answers
67 views

Origin Points (and Colliders) Not Moving with Armature

I don't know if this has already been addressed elsewhere, but I couldn't seem to find any information on this issue. I'm trying to make a chain of rigid bodies using bones and empty axis(s) with ...
2
votes
0answers
211 views

A Soft body (Nurbs Circle curve) collides with a Plane but doesn't do it with Cube & other objects

The case is this: A soft body (Nurbs Circle curve) falls on the floor and on one more object. The floor is a Plane mesh, the object is a Cube mesh. Collision physics is enabled for both. The soft ...
2
votes
0answers
1k views

collision between RB and softbody objects?

I have been trying to get a wrecking ball to collide with an upright slab of jello, with no success so far. I've tried so many combinations of physics attributes that I can't remember them all, but ...
2
votes
0answers
290 views

Prevent particles from growing through primitives

For a static scene I've modelled grass on a plane using the particle system's hair type. Now I want to place some objects on the grassy plane, some of which are rather small in height. Unfortunately, ...
2
votes
0answers
1k views

How to prevent hair particles from going through the mesh

How can I prevent hair strands from going through the mesh in other way than using force field so the outcome is like A or B shown on the picture? I've tried using collision with hair dynamics but ...
2
votes
0answers
400 views

Smoke simulation collision distance padding

I am simulating smoke around building rubble. I have the buildings set as smoke collision objects. However, the smoke seems to leave a huge collision padding around my objects. The buildings are to ...
1
vote
0answers
16 views

Some particles go straight through collision objects

As the title says, some particles don't seem to be effected by an object with collision enabled on it at all. I found a couple threads on this, but they were all really old, and the things suggested ...
1
vote
0answers
19 views

Rigged Cloth, Collision not working

I have created three cloths using bones and none of them will collide. Self Collide is on and the torso part does have collision physic enabled and I have played around with the sliders to no avail. ...
1
vote
0answers
38 views

How to pin cloth object to another object

I'm trying to pin a cloth object to another object. I tried to fix it through the Vertex group. However, because the two objects are dissimilar objects, cannot try to pin them together into the same ...
1
vote
0answers
31 views

Particles system with negative frame start don't work with collider?

I noticed with particles system negative frame start, the particles are not simulated with collider during the negative frames. The bake work, but particles are affected by collider only after frame 0....
1
vote
0answers
14 views

Setting up emitter to text and morphing to another text?

I am wanting to emit particles to form a text and then for the text to morph into another text, and to do it in Blender 2.81. Are there any experts out there with the know how to accomplish this. I am ...
1
vote
0answers
27 views

One-Way collision / One-Sided collider

I try to fill up my mesh with particles(molecular addon) falling from top. What I would need is an one-way collision to "trap" the objects inside the mesh and form the shape if something like this is ...
1
vote
0answers
62 views

Blener 2.8, how to make a rigid object hang from a cloth simulation?

The desired end result is that the necklace is cloth-like, and the star-shaped charm is rigid. Both react realistically to the environment as they hang around the character's neck. Thus far, I can get ...
1
vote
1answer
34 views

PopCorn Particle Background

Anyone have an idea of how to make popcorn fill up my screen using practices, or got some video that would help me out, thanks! I am trying right now, but they keep jumping up and down and not staying ...
1
vote
0answers
59 views

Cloth vibrating with object collision turned on?

On the character rig I'm creating for an animation, I have a cape, which is a piece of cloth which is solidified to give it thickness. However, I want it to collide with the torso, head, and arms of ...
1
vote
0answers
77 views

How can I make my cloth sim show tight folds?

I'm trying to achieve visuals like the following: Unfortunately, this is the best I've got so far... I'm using the 'pinning with hooks' method seen halfway down this page - I'd let the cloth drape ...
1
vote
0answers
35 views

Why is my cloth colliding so weirdly?

I am trying to simulate cloth on top of an umbrella, that's blowing in the wind. Right now I'm already struggeling with the cloth clipping through the base of the umbrella. I tried isolating a single ...
1
vote
0answers
25 views

“Whip” falling through handle. Collision + Soft Body

I have a four bezier Circle tied to a path that twists to form a rope and a separate object of the handle. The rope runs in the middle of it. I've changed ball weight etc and added the handle as a ...
1
vote
1answer
34 views

game shield in blender game engine

I am trying to make a shield that will end enemies when they come in contact with the shield. The problem is getting the shield to spawn on the character while he is moving. Any ideas? Thank u!
1
vote
0answers
38 views

Define died after collision particles via Particle Info node

Usual "death" means Age/Lifetime ratio is 1. This is simple to define with corresponding outputs of Particle Info node, but how to deal with particles killed by collision? Maybe some math involving ...
1
vote
0answers
131 views

making a character mesh collide with surfaces

I'm wondering if there is a way to make it so that my character mesh collides with all other surfaces in the animation process so that i don't accidentally put feet through the floor or fingers ...
1
vote
0answers
126 views

Collision and cloth modifier don't work

I would like to use the collision and the cloth modifier to fit perfectly the shirt and the pants (created with adobe fuse) to the body of my character. I've created the character with the manuel ...
1
vote
0answers
760 views

Rigid Body Physics - Mesh collision not working

New to blender, and have hit a wall getting a test scene to work. Funnily enough, the wall I've hit is that I cannot get my rigid body geometry to hit a wall! I am creating a galton box simulation to ...
1
vote
0answers
181 views

Export ONLY face normals of a mesh

I'm very new to Blender and just trying to accomplish some simple meshes for my game project. In the process of developing some collision meshes I'm looking to create some meshes that ONLY export the ...
1
vote
0answers
190 views

Rigid body go through soft body(not supposed to happen)

I want to clarify that I am really beginner with blender. I modeled a fairly simple .blend with balls that are supposed to be retrieved by a robot. At first I tried with a ball made with "rigid body" ...
1
vote
0answers
296 views

Blender Physics Simulation is Weird

First of all sorry for my english. I'm trying to make physics based short animation in blender. I'm using molecular addon but simulation isn't correct. It always pass the collision even at 16 ...
1
vote
0answers
274 views

How to make the cloth object simulate out of my collision body in blender?

I am simulating a cloth over a body obj. I have a problem with my cloth getting inside of the body before the start of the simulation. If I apply cloth physics to the shirt and collision physics to ...
1
vote
0answers
63 views

How does Mesh based collision shapes works in Rigid Body Simulation?

I kind of understand the difference between Convex Hull and Mesh shapes. But my question is how does the physics engine works for these two? In the case of the triangles how does the engine calculate ...
1
vote
0answers
71 views

Bullet particles not colliding with cell fractured model

I have a particle system emitting a bullet object with collision and rigid body. I have it so the particles collide with a cell fractured object which also has collision and rigid body. I have tried ...
1
vote
0answers
144 views

Make particles appeared when colliding with a object

I wanna make a particle simulation where the particles would appeared when colliding with an object. My setup is this : Particles are being emitted from a plane. Wind is pushing the particles toward ...
0
votes
0answers
10 views

Copying collision properties from an active object in Blender 2.82

I want to copy collision physics from one object to the others (Object->Rigid Body->Copy from active doesn't work for me). I know that I should select the ...
0
votes
0answers
12 views

How to prevent the rigging hair pass through the body, object or mesh while animated?

Greeting... I never find this problem solution for 2 years... can some one help me? Please? or blender dont have way to do this?... HERE THE FILE :
0
votes
0answers
12 views

Cloth Simulation

I don't understand why my towel when it falls in some places passes through the plate. I already enabled the collision on my plate and table. What have I done wrong?
0
votes
0answers
9 views

How to make the bone or armeture not pass trough the mesh or object?

I want to animated this bone with mesh and i'm using jiggle plugin, i want my bone have Collision and to make it not pass trough the cube and the sphere.. how to make it? thank you
0
votes
0answers
17 views

Particles collide properly in preview but not render

I’m trying to have some particles his a collision object and then slide off. What’s confusing is that the previews and even the F12 renders work and then when I go to render the animation, the ...
0
votes
0answers
13 views

particles system collision

so some of the particles i'm using are stopping and floating above the collision plate cluttering up in the middle witch is weird and others fall through bouncing back up ass seen here i'm using this ...
0
votes
0answers
19 views

Why the sewing is not perfect

The "Max sewing force" value has been increased for correct sewing, but is still fully adhering to the object and not being re-sewing. The same problem still occurs, although I have increased the "...
0
votes
0answers
22 views

How do I keep Hair particles from going through separate mesh? (eye's to be exact)

I've been trying to build a character covered in hair(think Sully from monsters inc.) and i want to add eyes to the character, but the hair particles are coming through the eyes. I've tried making the ...
0
votes
1answer
47 views

Animate Collision On and Off

I have an object that a cloth is colliding with, and I want the collision to be disabled in the middle of the animation. However, I cannot just turn off object Collisions on the cloth, because there ...
0
votes
0answers
17 views

Why do the origins of Explosion particles change when I render the image?

When I look at the Explosion particles in the view port they are exactly where I want them (Top picture), however when I render the image the origins of the particles seem to change as in the lower ...