Questions tagged [particles]

Questions pertaining to a group of particles which can be used to simulate a system of chaotic objects(known as particle systems). Particle systems in Blender are robust and full of settings.

1,101 questions with no upvoted or accepted answers
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Make particles follow true (material) displacement

I'm experimenting with some procedural surfaces and I have a particle system on it. The problem is that, even though I'm using material displacement, the particles lie flat on the mesh. Is there a ...
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1answer
441 views

Trails Behind Projectiles

How would I add comic-like trails to projectiles, such as arrows? I have an example from YouTube, but the effect is done in another software. https://www.youtube.com/watch?v=K4lmGGSsFYg The effect ...
5
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2answers
3k views

Making particles collide with each other? Possible? (2.8)

So I have made what is essentially an asteroid field. I did this by making half a dozen asteroid models, and then making a large cube with a couple of ‘volume’ emitters that run for a single frame. ...
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0answers
520 views

Particle Instance Modifier : colour each instance based on the emitter texture (like Hair strands materials do)

In cycles, with particle hair strands, I can get the colour from the texture of the emitter object for colouring the entire strand. When I use the "Particle Instance" modifier on a mesh (a simple ...
4
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0answers
24 views

How exactly is orientation determined for hair particles rendered as objects?

I am using a Blender 2.8.x hair particle system to render particles using objects, but I cannot figure out precisely how the generated objects are oriented. At least not in all cases. If I do NOT ...
4
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0answers
121 views

Is there literally NO way to start a particle animation when the particle is emitted?

I've been battling the particle system for over a week now without any success. A little context to what my issue is: I'm using an instantiated collection(!) with 4 meshes in it as particles, each of ...
4
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0answers
152 views

How To Model Ornamental Grass Procedurally

I am trying to model an ornamental grass procedurally (Miscanthus sinensis 'Gracillimus'). I want to be able to do this procedurally (not combing for example) because, unlike normal grass, it has a ...
4
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0answers
80 views

Project Idea/ seed bead particle array

I am new here and have been working with Blender for a few months for a college course. We often find solutions to problems doing internet searches because the course could not possibly have a ...
4
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0answers
179 views

Is is possible to get boids data to animation nodes signalling when they are 'attacking'?

I am creating a space dogfighting scene and I have been able to hook up the particle boids to animation node instances, including positions and even the rotations by normalizing the velocity and ...
4
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0answers
411 views

Using Particle systems on an Array Modifier's Cap

I'm new to Stack Exchange, but I've been using blender casually for the past year, or so I'm currently working on a city, for the purpose of learning and fun. To save myself from building a lot of ...
4
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0answers
313 views

Level of Detail of Particles System?

First, the GIF above is a 60-frame sequence with a 1080x1920 size that uses a freestyle to render the outline. This scene is a lot of polygon counts using the full shot model because the characters ...
4
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0answers
3k views

Convert Animation Nodes to Object and Keyframes

I have This Node Tree in Animation Nodes: As you can see it creates objects and edit their location. but When I render, even If I normally bake all the Dynamics, the cache disappears and then it ...
4
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0answers
291 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 ...
4
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0answers
474 views

How to create very realistic rain with a particle system surrounded by a fluid domain?

I am working on a scene for a short film in which it is raining on a desert. One of the shots will be very close up so I want the most realistic look possible. I looked at other tutorials on how to ...
4
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0answers
376 views

How to Offset a Particle cache in Time

This has been asked before - in 2013 - in relation to smoke: How to offset multiple smoke instances by time? The answer was inconclusive, so I'm wondering if there's something new since? I'd like ...
4
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0answers
1k views

How can I make particles not pass through the surface and not get “stuck” in it?

I want to make the falling autumn leaves. I did a system of particles, but when the leaf particles reach the surface, (to which I applied collision modifier), they do not entirely remain on the ...
4
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0answers
317 views

Particles intersecting object and then exploding without reason

I'm using PyroEvil's Molecular Physics addon, which is required for the simulation to work. Find it here. I've been playing around with the aforementioned addon, to see what it can handle and what it ...
4
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1answer
1k views

How do I use dynamic paint to control hair density?

I tried using the dynamic paint modifier to control the hair density of an object but it didn't work out like I wanted it to. First is set up a plane, gave it a few subdivisions and added a dynamic ...
3
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0answers
21 views

Blender hair in viewport looks nice and in render deformed

Essentially that's it, I have styled the hair and everything and my viewport is set to display the same amount of hair as in the render, so I was expecting the same shape as in the render, but when I ...
3
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0answers
24 views

How does the Roughness Curve work?

When you go into a particle setting and check Children -> Roughness -> Use Roughness Curve, you get the curve widget instead of roughness parameters: In fact, that's pretty much all Blender's ...
3
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0answers
29 views

Displacement on Particle Location

I am trying to create a shader which uses displacement to create a dent in an object with a hair particle system, based on the locations of the hair particles. The strawberry I have created is setup ...
3
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0answers
32 views

How do you texture a remeshed particle system?

I try to make some interactive soil! And I already set something up that kind of works, but I have some problems in texturing it! What I did by now is... I made a particle simulation via the molecular ...
3
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2answers
66 views

How to generate building on surface

I have created 20 towers. Each tower contains few mesh. Each tower is not with single mesh. Some are curve some have array modifiers some bevel etc. I want to generate on a plane to make a city. With ...
3
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1answer
79 views

Rotating particles in two different axis

I'm having some trouble randomizing these particles on top of my cylinder. My goal is to randomize the orientation of my particles with respect to the object's y-axis, which makes the particles stand ...
3
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0answers
71 views

Point particles to empty

I am making a colosseum with a crowd inside. For the crowd I am using an emitter and I have a few very low poly people objects in a collection. The problem I am having, is that they are all facing ...
3
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0answers
67 views

How can I control particles with image maps?

I have a texture (a black and white and colour version, I can use either). I need to use the colours/values on this texture to dictate the hair particles that will be used on a plane. For example: if ...
3
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0answers
52 views

Particle Instance Modifier “Amount” and “Offset”

hopefully a quick question. I am looking at Particle Instance Modifiers as I want to have a particle system that emits particles, however I want the particle system to have different particle ...
3
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0answers
69 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
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0answers
92 views

Setting particle color with generated m x n image texture

I have a large particle system in which the particles (stars) are colored according to a generated image texture. The image texture was originally 119,617 wide and 1 px high. No matter what I did, ...
3
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0answers
91 views

Size limit of generated texture images?

I'm using generated texture images to set the individual colors, emission strengths, and sizes of 119,617 stars imported from the Hipparcos catalog. My texture images are each a single row of 119,617 ...
3
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0answers
729 views

How do I get particles to “grow” on or follow a surface (ex. below)

What's a good way to have particles grow and shape a surface like below? https://vimeo.com/203757114 I imagine this was done in MAX or C4D. Possibly with animation nodes? I have no idea here. To ...
3
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0answers
828 views

How to create a sword trail smear in Blender Internal with Particles?

I want to create a sword trail smear in Blender with Particles. I cannot figure it out, and googling doesn't seem to give me too much direction. Perhaps I'm googling incorrectly. The sort of smear I'...
3
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0answers
232 views

How to drop particles so they land in a natural way?

I have a plane as collision object and a house as particle generator. I'm dropping my particles. I have tweaked some settings so that they fall in some natural way, but they just bounce like a ball ...
3
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0answers
996 views

Assign Particle System to parts of a mesh

In the materials slot their is an "assign" button, is there anything like this for particle systems? But more specifically is there a way to assign a different material to a different part of a mesh. ...
3
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0answers
76 views

Making particles wander around on a plane

How do I make particles exist on a plane and make them move around on the plane by using a force field? I want to create something similar to this, but in blender so I can change the properties of ...
3
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0answers
200 views

Time remapping incompatible with particle info node?

I'm trying to make a spark material that fades to transparent as it reaches its lifetime limit. I've succeeded, but it absolutely does not work with time remapping for some reason. Here is my problem ...
3
votes
1answer
2k views

Particle rotation normal issue with particle orientation

Is there a way to get the particles in the correct orientation to the emitter and not rotated at varying angles? (see image) eg. butterflies sitting on a cube's surface. My relevant settings are: ...
3
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0answers
134 views

Preview and final render of grass are different

I am making a park with a path in Blender, but I have a problem with the particles. I've put the emission number at 200000 (for starter). At Viewport Shading - Render the grass looks normal (full), ...
3
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0answers
235 views

Particle cache step of less than 1?

I have a particle system, and an emitter. Sometimes the emitter moves extremely fast, and leaves gaps between particles. I'd like to lower the Cache Step below 1, is there any way I can have blender ...
3
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0answers
130 views

Simulating sedimenting cylinders with a particle system and molecular addon

I want to simulate rod-like particles falling slowly down onto a surface. Eventually, my goal is to retrieve the thickness of the 'carpet' formed by those cylinders by this process. For this, I have ...
3
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0answers
312 views

Keyed Particles don't render

I made a Keyed particle animation. I have 3 base objects with particle systems and a 4th object with Keyed set in the particle system settings. So the particles travel between 3 states/objects. The ...
3
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0answers
239 views

Converting hair particles to only one mesh to avoid Blender crashing

I have a tree that is emitting 32,000 planes that are textured as leaves. I need to get all of these to be one single object, however if I click 'convert' in the modifiers section, Blender becomes ...
3
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0answers
559 views

Fill a mesh with particle hair

I want to take a low poly hair mesh and fill it with particle hair on the inside. This can technically be done by emitting the hair from the faces of the mesh (and flipping normals so they face the ...
3
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0answers
231 views

Static grass animation - grass looks differently in different frames (it's not animated though)

I made some grass using Particle System and grouped grass objects (each object is a clump with lots of blades). I didn't do anything to the grass, the only thing that has any keyframes during my ...
3
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0answers
147 views

Moving all particle keys at once?

I'm developing what's going to be a relatively complex keyed particle system. Problem is, in a regular keyed system, in most software where there's a timeline you can move one key and subsequent keys ...
3
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1answer
187 views

Particle and Fluid Forces driven by motion vector image data (XYZ vectors). Optical Flow

I'm looking into how to achieve forces in Blender particles and fluids driven by motion vector image data. Think "optical flow". This is possible in Nuke, Houdini, and other packages. It appears ...
2
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0answers
27 views

Why my fur texture only looks right on eevee render?

I was ready to render this image but deleted some part from the hat that now the EEVEE looks right, but when I change to Cycles the fur part looks black. Does anyone know what I can do this solve this?...
2
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1answer
25 views

How can I add color to the hair particle system considering I have a vertex group that it's dedicated on the right side of his head?

So, I thought I could assign my vertex group to that material and therefore my particle hair system will react to that behavior. Can someone enlighten me about how to this correctly? My hair is ...
2
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0answers
37 views

How to make shape-keyed particles behave independently?

Let's say we have a mesh object with a Shape Key deformation, and it's driven by a Driver based on its distance from an Empty. It works as expected. But then if we want to make a Particle System of ...
2
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1answer
25 views

How to make effect of burning objects from Particles?

How to make so that Boolean affect on color & shape of particles? Here's example, I need to create effect so that grass from Particles burns. But grass doesn't change color & shape from ...

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