Stack Exchange Network

Stack Exchange network consists of 175 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.

Visit Stack Exchange

Questions tagged [collision]

The tag has no usage guidance.

6
votes
0answers
82 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 ...
3
votes
0answers
44 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
60 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
191 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
196 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
16 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
40 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
85 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
0answers
59 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
156 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
995 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
238 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
999 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
294 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
17 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
0answers
63 views

How can I realize “sticky” collision, i.e. that objects connect as soon as they touch?

I'm fairly new to Blender (great piece of software btw), so please bare with me. I'd like to have multiple spheres (up to 50), which move randomly in space and as soon as two spheres collide they ...
1
vote
0answers
29 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
107 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
102 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
574 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
145 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
135 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 ...
1
vote
0answers
178 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
275 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
207 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
60 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
62 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
133 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
22 views

Make Path Dangle and Collide for hair

I have hair particles following a path. This is for a lengthy animation project so chose to do this to make it easier than combing hair back to where is belongs. Picture below. I want one end of the ...
0
votes
0answers
8 views

How do I influence the distance particles have to a collision object?

I have a cube, and a particle mesh inside the cube which emmits boid particles. However the particles don't bounce off the inside wall of the cube but keep several cm distance to it. I would like ...
0
votes
0answers
52 views

How to create a soft body simulation like this…?

I'm making the switch from Cinema 4D to Blender and I've got some problems with the soft-body simulation. I want to create an image like this: How do I achieve this look? Let's say I have a cube and ...
0
votes
0answers
20 views

Boid Particles come out above the mesh

I'm trying to keep the boid particles confined in between the double wall of the house (behold image) but they keep coming out above or next to the plane itself. When I move the plane away from the ...
0
votes
0answers
31 views

How to animate spiral cutting / milling?

I have a circular saw cutter in a tube. The cutter is supposed to cut a gap into the metal tube by cutting in a spiral motion. Initially I wanted to make it fancy and show the material that is cut ...
0
votes
0answers
23 views

Unpredictable behavior when shooting a sphere on a cube

I have a player object that can shoot little sphere objects and simple blocks as enemies. When a sphere hits an enemy it sends a message to the enemy to dissapear and spawn a new one (cube) with the ...
0
votes
0answers
21 views

How to make one object take the shape of another only where they touch

This might be a duplicate question but I did not know the vocabulary to search for what I need. I need to have two object to have perfect interface with each other (like a Boolean union) but where ...
0
votes
0answers
28 views

animating a collision with an object following a path

I have this idea that looks pretty simple in my head, but turned out to be pretty hard to animate. I've got this animated bee that is flying along a path, and i want it to collide into an object, ...
0
votes
0answers
65 views

Collision phisycs in cycles using metaball particles

I am trying to make metaball particles collide with an object. Using the collide feature in the physics tab in blender 2.8. It is looking great in the render preview window but whenever I render it, ...
0
votes
0answers
65 views

2.8 Beta Walk/Fly Mode No Wall Collisions?

Is there any way to add collision to walls when in walking mode. i'm trying to explore my scene without walking through walls and falling off into the void. yeah i know there's fly mode also, but ...
0
votes
0answers
26 views

How to get collided objects? (Python)

I want to know what objects are collided. Is it possible to do with existing Blender’s Python API?
0
votes
0answers
26 views

Collision in .obj file

I am completely new to Blender and I have never done anything with 3D. Currently I have some .obj files and I want to understand them. I downloaded source code for ...
0
votes
0answers
69 views

Enable collisions with targets and objects (Animation Nodes)

So I'm using animation nodes to generate a nice sinusoid as pictured below. See Omar's answer here for more information. I want this sinusoid to collide with the cube face and "bounce" off. If I ...
0
votes
0answers
44 views

How to make an object change its color when it collides with another?

I think the title explains it well. I want to make two objects collide and change the color of one of them. How can I do this using physics, in cycles? Thanks.
0
votes
0answers
55 views

Fluid simulation obstacle collision

I am playing around with a fluid simulation however as you an see in the picture the liquid is not touching the bottom of the pool. Instead if collides at the height of the pool border … I created the ...
0
votes
0answers
42 views

Quick question about smoke collision

I'm currently making a low poly desert island for college, which has a volcano and smoke that emits from the top. I've set up a cone at very top facing down, which works as a collider, so the smoke ...
0
votes
0answers
35 views

Is it possible to have solid objects in pose mode?

I want to create a run cycle and have my characters feet stop and bend on the ground, which is just a plane so that its perfectly flat footed, among other reasons. Is it possible to set this collision ...
0
votes
0answers
46 views

Missing cache error

My simulation runs at 1 FPS and I noticed my console is spammed by "missing cache error". If I opened my blend file : everything's OK. If I edit a mesh (enter and exit edit mode with no change) : 1 ...
0
votes
0answers
38 views

How make hand touch without going through?

I want to make two hand touch each other without than going through one another.
0
votes
0answers
83 views

Collision detection for wheels for detecting vehicle air when using vehicle simulator

I'm using the vehicle constraint to simulate a vehicle in Blender Game. The documentation instructs to set the collision on the wheels to None. Hence The collision sensor doesn't work with the wheels....
0
votes
0answers
53 views

How do you create a particle system that has animation tied to dying particles?

As an example, I am trying to create an animation that emits particles that need to explode/crumble when the particle collides with another object. I am not sure however, how to trigger these events, ...
0
votes
0answers
174 views

Blender - Undefined Socket Type in animation Node

I am trying to learn the function "Particles Stick to side faces". Particles stick to side faces However, I installed animation node in blender and find some source node in the node editor become ...