Questions tagged [collision]

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Particles are not killed when video is rendered

I have 2 images (as planes) and a particle emmitter in between. When previewing, no particle come through the image as in this screenshot: Link When rendering the video, the particles do come through ...
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How can I prevent my collision objects from intersecting?

I'm trying to simulate an elastic beam draped over the edge of a box. I'm close, but the beam penetrates the corner of the box (see photo). The beam is a NurbsPath softbody and the box and floor are ...
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Emitter+collisions+molecular addon 2.8

My goal is to fill a cup with objects. I prefer using an emitter because it's easier to change quantity and more. I read that with molecular addon 2.8 you can achieve this by preserving collisions ...
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Low poly long coat cloth simulation

I made this model of a girl who's wearing a long coat. I want the lower part of the coat to have cloth physics. I understand how to make it simulate cloth, I know how to attach it to the rest of the ...
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How to move a dense mesh irregular object above other object surface in a especific direction?

Hello I m new in Blender and I ve trying to solve the next problem for a long time but I couldn t find an appropite solution. So I m writing to you and maybe you can help me. My problem is the ...
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Rigid Body Simulation colliding spheres intersect

I am trying to create a random packed bed (cylinder filled with spheres). For the cylinder I added it from the add mesh option and deleted the top face and added some thickness using solidify modifier;...
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11 views

How can you make something both stiff and flexible at the same time?

I'm using cloth physics because soft-body is too slow to be usable. What I am trying to test is just a single blade of grass and a cube. I don't know exactly how collision works so I enabled ...
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3 views

How can I make specific vertices attracted to each other while doing a collision simulation (specifically cloth)?

I would like for the specific vertices of an object to gradually connect when I start a cloth simulation, similar to the way that you can "sew" edges of cloth planes together in dedicated cloth ...
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7 views

Internal Smoke Collision v2.8

I am trying to constrain some smoke in an object, but the smoke collision settings changed in v2.8, and the documentation hasn't been updated. Does anyone know how to do internal collisions? I'm ...
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13 views

Pressurized cloth object don't collide with another soft body

I'm trying to simulate an automatic tourniquet mechanism that can obstruct the blood flow when expanded fully due to inside pressure. I pinned the cloth to the outer ring and keyframed the pressure ...
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1answer
13 views

Collision Objects losing their effect

I have a scene where I have a flag blowing, and a box with a collision modifier on it. Everything is working fine, but every time i disable the collision object from the view port, they lose their ...
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Initial velicity not working if objects a close to each other, how fix that?

I need to make colliding streams of water, it will be fluid rainbow with 7 colors, but i've faced the problem((( As you can see if objects are staying separate, initial velocity working werry well, ...
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Why does my cloth simulation object not return to its original shape after colliding with an object?

I'm relatively new to Blender and currently I'm working on Blender 2.82 and trying to do a basketball animation. But I've faced a problem and couldn't solve it for days even after following tutorials ...
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61 views

How can I make Mantaflow smoke fill a collision shape?

I'm trying to achieve the effect found in this question and it's attached .blend file - however, with Mantaflow (I assume), the answer no longer works. I'd like to be able to fill a text object (...
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14 views

Spooky behavior when baking rigid body to keyframe

I have a simple animation of a wrecking ball hitting some cubes, before baking the rigid body into keyframes everything looks great, but when I do so, after the collision, some of the cubes that ...
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Collision issues in render

Sup, kinda new to the collision, I want them to collide just like in my preview but when I render they just fall through. Is there anything I need to do to avoid them not colliding in the render? I'...
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19 views

Only few hair affected by collision body in Blender 2.8

So im making a mouth model and y have this tooth brush, but when i see it in Eevee render, only few "hairs" seem to be affected by the collision body. this are my settings in Hair Dynamics Also, the ...
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7 views

Broken wall pieces aren't falling after I added collision on base plane , before it was passive and then i added collision

Everything was ok my base plane was passive and the wall which was meant to break was working properly until I added Collision on Base Plane so that particles falling from wall can interact with it ...
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19 views

Fluid simulation goes through object

I'm trying to simulate a fluid in blender with a cup, but all the while it goes through it. If someone knows how to solve it, I would appreciate it if you could explain it to me. I'm sorry for my ...
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15 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 ...
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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 :
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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?
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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
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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 ...
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15 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 ...
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23 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 "...
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24 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 ...
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1answer
86 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 ...
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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 ...
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29 views

How to make baggy clothes using Cloth Sewing, Cloth Modifier and Object Collision?

My question is two fold: 1) How to make baggy clothes in blender using Cloth Sewing, Cloth Modifier and Object Collision? In all my attempts the cloth : a) Fell down into the never ending abyss ...
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1answer
28 views

Making an object heavier on one side to afect the fall of an object with ridgid body (active) applied to it

I want to make an object (which has rigid body_active applied to it) to be affected by gravity more on one side, as it falls to the ground. How can this be done?
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14 views

Make hair bones collide with parent mesh?

I’ve followed this tutorial, which is excessively in depth. Essentially it is a line of verts given a cloth modifier, an empty parented to each vert, and bones between each set of verts with IK set to ...
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1answer
15 views

Make the wall of a UV sphere collide-able in untiy?

i followed the tutorial in this answer to make the hemisphere. but when i added it to unity and generated the colliders , the BASE of the sphere had a collider on it. (imagine if hemisphere had like a ...
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Making Box Colliders in Blender instead of Unity

Good evening community, It's more of an asking for an advice than actually a question regarding to game design with blender and Unity. So I've basically created a level in blender (3D) by mainly using ...
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1answer
19 views

Flag Physics seems fine when on the viewport but looks messed up when rendered

I'm fairly new to blender and I've come across this issue. My flag with wind physics seems fine when I animate it on my view port using collision physics. Here's a sample: https://imgur.com/qmJvESK ...
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50 views

How to get particles to move with object. Works in 2.79 not in 2.8 possible bug?

Seems like a pretty straightforward question. I am using blender 2.8, and had trouble for days trying to figure out why my particles escape my collision object once the collision object begins a ...
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2answers
75 views

particle collision is weird whith sphere object

I have a problem with a particle system and my sphere objects deep half way through my collision object, the screenshot is here:
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1answer
119 views

Cloth falls inside object rather than on top

As you can see in the picture, the blanket folds inside of the top mattress when it's supposed to fall on top. The blanket starts outside of the perimeter of the mattress but gets sucked in for some ...
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53 views

v-hacd blender 2.8 with physics engine

I am trying to get to work with the V-HACD add-on on Blender 2.8. While the convex hulls decomposition of the mesh works well, I was wondering how to make it work with the physics engine to animate ...
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32 views

Roulette Simulation Rigid Body

I am currently making an roulette simulation. I have 4 main objects: the bowl, the sphere, the spinner in the middle and the separators which separate the numbers (I don't know the correct name for ...
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23 views

Particles not following movement of collision object

Been trying to wrap my head around this for the whole morning. I have a snowglobe, and the hand throws it in the air. My particles collide with collision object (duplicated the glass globe), right up ...
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Modify location data for physics animated object

I have a "coin" standing on a "table" which is being spun by the use of two projectiles, hitting opposite edges of the "coin," like the action fingers would have when spinning a real coin. The "coin" ...
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How to do random rigid body motion with location constraints?

I want three objects (say 3 UV spheres) to move randomly in a plane. Saw some solution using force fields - force, turbulence, and vortex. But can't exactly figure out how.
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The cloth collision in 2.8 doesn't collide

so basically I am trying to make cloth collision in new blender, in the old one I never had a real problem, making some table cloths and so on, always worked. But here comes the problem, I tried to ...
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Algorithms used in Collision detection, Rigid Body Simulation

I had a school project done in Blender using Rigid Body simulation where obviously collision detection plays a huge role and I want to be able to explain in better detail how it all works in the ...
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Collision modifier not rendering and transparency issues in eevee

I have created a spaceship shield effect in which I lasers (particle system) striking a dynamic paint shield. I have set a collision modifier in which the particles die on collision with the shield. ...
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Human figure moving arms through body

I have imported a MakeHuman figure and I am trying to implement a series of arms and legs movements under python control ...
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2answers
98 views

Modify Boid collision distance with hard boundary - v2.80

Hello hello Blender community! This is the first question I'm posting, similar ones have been asked before but I was unable to get something working from the answers/comments on the questions most ...
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117 views

Weird cloth behavior: why does my cloth diverge on collision?

Earlier I've animated simple collision with a cloth-modifier. (I've compressed it to a 2MB mp4, but I don't know how to upload it). It shows a face moving along a path through a (pinned) cloth, so ...
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35 views

Particles hit mesh in rendered static frame but go through same frame when rendered as animation

I have particles falling down from an emitter; they are supposed to hit the floor (plane mesh) and pile up there. This works perfectly in the viewport and when I render just a single frame but when I ...