Questions tagged [simulation-nodes]
Use this tag for questions about Simulation Nodes, a geometry node-based mechanism that allows you to animate geometry (available in version 3.6)
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How can I stop scaling instances based on their surface proximity?
I have been trying to make a procedural bubble generator where the instanced spheres wouldn't intersect.
Obviously, the issue is basing their scaling on something other than the mutual distance of the ...
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How To Use Force Fields In Geometry/Simulation Nodes? [W/ .Blend]
I apologize if this is obvious, but I'm still learning Geometry nodes and I'm stuck. I built this node tree from a video on YouTube, and what I have it doing is behaving like snow particles blowing ...
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geo nodes: I want to achieve a distribute on "points" so it's symmetrical, but I want to manipulate the distribution for every n-frame. Any ideas?
I want to instance on the points of a grid. The goal is to get distance between the points so I can instance something new on them. At the moment the points are adding continuously.
I already have ...
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Write an object's speed to an attribute using geometry nodes simulation?
I thought what's shown in the image below would work, but I'm having a difficult time because it seems the Evaluated spreadsheet doesn't update consistently.
And if you put this node group on an ...
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Simulation Nodes: Particles with normal-aligned velocity
This is driving me nuts. I'm trying to generate a particle system with Simulation Nodes in which the particles spray out in the direction of the face normal from where they spawn. I got it to work ...
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Simulation nodes softbody
I’m trying to do a softbody simulation in gemoetry nodes. Basically what I’m doing is calculating a “relative position” for each vertex by subtracting position from edge position (position evaluated ...
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59
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How can I make simulation node particles stop and swap geometry at the end of their lifetime?
I have a geometry node setup that generates randomly moving points. Ideally I'd have them to start out as circles then pop without moving position once they reach their lifetime, like in this gif.
So ...
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112
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Maze Generation with Geometry Nodes and Simulation Nodes - Attribute Updating Issue
I'm currently working on a maze generator project using Geometry Nodes and Simulation Nodes, inspired by Daniel Shiffman's tutorial and the corresponding code. I've made good progress so far but have ...
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Capture a point cloud at a specific frame from the geometry nodes simulation zone
I have a point cloud which is the the result of several iterations in the simulation zone of the geometry nodes.
Now, I would like to capture this specific frame of the simulation e.g. to use it as a ...
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Simulation nodes: Create an instance, scale it up, scale it down, and then dissapear
I am trying to create a simulation that, at a certain point in time, creates a point, attache an instance there, and then scale it from 0 to 1. And upon reaching scale 1, goes back to scale 0. And at ...
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Make an "auto switch" input?
Here is my problem:
I have a simulation system that creates a flow of points with the help of a Distribute Points on Faces node and the points are moving up with a Set Position Z offset.
By default, ...
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How to access an attribute inside the simulation zone from the previous frame?
So I am trying to simulate a particle under gravity, specifically trying to use a verlet numerical method. All I want for now is to have the particle move under constant acceleration downward. The ...
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simulation nodes python bake post
i am trying to bake a simulation in simulation nodes using python.
bpy.ops.object.simulation_nodes_cache_bake(selected=True)
print("bake complete")
...
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Determine if an Object is infront of the Camera or Behind it?
Is there a way in Blender (3.6.5, preferably Geo Nodes, but I'm okay with drivers or scripts as well) to figure out whether an object is behind the camera (so as to stop doing geo nodes animations and ...
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Change gravity strength in sim nodes based on proximity to object
been bashing my head for a while, since I'm terrible with geo nodes logic.
I created instances of objects that are scattered on plane, and after that, they would fall into fluid, but since fluid does ...
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How to generate number of spiral arms dynamically?
Generate number of arms dynamically.
I'm trying to have the number of "arms" generated by typing in a number. At the moment I use several switch nodes that already have the number of arms ...
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Wave dynamic paint is not circular
I don't undestand why the ripples produced by the cone, are somewhat squared.
Any idea on how to get perfectly circular ripples ?
Here is the blend file ripple_test
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A rolling ball with simulation nodes
Does anyone want to help me with some GeoNodes? I have a keyframed ball moving on a plane. I figure it should be possible to make the ball roll correctly using simulation nodes. In my mind, you ...
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Simulation Nodes: How to draw curve and have it update to screen immediately while playing timeline?
Simon Thommes made this freely downloadable smoke cloud curve drawing asset: https://studio.blender.org/films/wing-it/?asset=6834
It uses the Simulation Zone in Geometry Nodes.
How can I make even a '...
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Simulation Nodes Initial set of points behaves strange
I´m currently following this tutorial (https://youtu.be/RJbLiFTNHnI) and came across some strange behaviour on one of the first set of points that get joined into the Simulation Zone.
On frame 0 the ...
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194
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Change Simulation Nodes bake directory
How can I manually specify the location where the Simulation Nodes data is baked?
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58
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Particle Falloff value
I have a setup where I have a plane emitting particles (Simulation Nodes) and I wish to have two objects that are placed on either side of the particle emitter to control the falloff size of the ...
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115
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Grass wind bending with simulation nodes and maintaining length
I would like to create a grass simulation with geometry nodes.
I have a system that can almost work. But when I try to apply it to my use case I get stretching of the grass. Currently I have a system ...
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Why does each point have the same life time?
Why does each point have the same life time?
I would expect like, 0, 1, 2, 3, 4 etc. (one new point each frame, and life time increments by one...)
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Simulation: Problem with normals and Align Euler to Vector
I have a problem with the align Euler to vector, In a simulation, I am distributing some points on a grid, then use instance on points to have some cube to follow the bending grid.
The problem is that ...
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133
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Retaining materials though simulation nodes
I am using the new simulation nodes to have an object rotate randomly, when the object leaves the simulation node block: all it's materials are gone. I can't seem to find a way to reapply them. There ...
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95
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Geo node (simulation node) cannot add velocity to an instance
I try to repeat the demo provided by Blender officials which allows the user to manipulate a big ball to pull other small balls with the use of geo nodes.
But when I try to add Velocity in the ...
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130
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how can i make particles chase a specified target with geometry nodes simulations?
Also how can i integrate it with my current system?
Here is the uploaded blend file for inspecting if needed
https://we.tl/t-jAgUoEFBiI
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how to grow grass on path for flowing from one point to another?
https://www.instagram.com/p/CumziCOrnk5/
I wanted to make animation like this but i want to animation grass on curve like this but it should start growing and end after some time like a loop flowing ...
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Can't pass attribute through Simulation Output node
I'm trying to attach the vertices of mesh A to mesh B using the Sample Nearest node. Since mesh B moves (in my case using a Simple Deform modifier) the sampling of the nearest vertices should only ...
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Why Custom Group behaves differently in a Simulation Zone and in a normal chain of nodes? [Bug fixed in 4.0α]
Consider this Custom Group:
It adds a line segment to existing path of the "Lazer", by raycasting towards a default geonode cube using provided position, direction and index of a face to ...
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Animation of a teardrop with Geometry Nodes and Simulation Node
I'm trying to make the fall off a tear.
I use geometry nodes with simulation nodes.
What I want is that the first hundred frames the tear drops little by little.
And from frame 101 the tear falls fast....
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De-overlap geometry in simulation nodes
How to extrude only non-overlapping faces in simulation nodes with random probability, or remove the duplicated faces?
The overlapping geometry is causing black on Cycles render.
Nodes
Material view
...
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Problem simulating elastic collisions using simulation nodes [closed]
So I have a question regarding simulation nodes and am hoping someone can help resolve my issue.
blender version: 3.6 (Stable)
I am creating a geo nodes setup that attempts to simulate perfectly ...
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727
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Passing Data Into Simulation Zone
I am following this tutorial on the new simulation nodes: https://www.youtube.com/watch?v=RJbLiFTNHnI. At around the 12 minute mark, I have some confusion. In particular, as to why some data passed ...
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Adding all relative position vectors between instances
I am creating a simple gravity simulation between instances using the new simulation nodes. However, I am unsure how to, for each point, find the resultant vector between all other points. The images ...
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Simulation Nodes: How to collide convex hulls?
Geometry Nodes have a node for converting meshes in a collection into convex hull instances.
Can that be used with Simulation Nodes to make this happen?
I want to use Simulation Nodes further for ...
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If I want the data of simulate zone in certain frame, what should I do?
For example, simulating a live curve, I have it instance fruit midway, or generate points that can create new forks.
I don't want to use random booleans to make it, it feels a bit uncontrollable.
I ...
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Offset position of instances with regard to proximity and direction of another object using geometry nodes simulation?
I'm experimenting with the new simulation geometry nodes and I'm trying to make a grid of instances that will move out of the way of an object in the direction they're being pushed. Currently, my node ...
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Simulation Nodes: How is Delta Time different from Scene Time?
How is Delta Time different from Scene Time in Simulation Nodes?
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Simulation Nodes: How to restart extrude-loop from scratch?
I have this extrude-loop in Simulation Nodes.
How can I restart it from scratch every 4th second like a lightning that spawns from the same spot every 4th second?
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Simulation Nodes: How to make this quite simple curve effect?
I'm trying to learn the simulation nodes but just can't wrap my head around it.
This effect probably could be done with the regular geometry nodes, but I think it would be so much simpler with ...
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Expanding particles by the normals of the sphere they are scattered on GeoNodes Simulation zones
I want to instance points on a sphere and use the normals of the sphere to make the particles expand from that point, if possible make them collide with objects around them using simulation node in ...
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Are "sample curve" and "simulation zones" nodes incompatible?
I'm trying to sample a curve in the new simulation node, but without any result...
I attached 2 screenshots, one of a functioning node setup and one a that doesn't work. I would like the second setup ...
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Generate integers with String to curve node and Simulation Nodes
How do you generate a list of integers with String to curve (1, 2, 3, 4, etc)? I tried to with simulation nodes but the string to curve node does not have a geometry input socket.
Or is there a way to ...
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Audio Peak Meter
I’m trying to make an accurate audio peak meter in blender and can’t seem to get it right. So here’s what I want to do… The Z scale of object B is being animated by an audio file which I imported in ...
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Geometry Nodes: aligning one vector to another
I have a vector A that continuously varies direction using simulation nodes. I try for vector B to always point antiparallel to A. My idea was to calculate the angle between vector A and B using the ...
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What happened to geometry simulation nodes? [closed]
Simulation nodes were one of the experimental branches for 3.5. Now the branch is archived, and the simulation nodes are missing from the 3.5 beta version. They are also missing from 3.6 alpha release ...
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Blender 3.5 simulation: colliding points
Different people showed ways to collide points with faces of a geometry (external collisions), when using simulation nodes in Blender 3.5. I couldn't find a neat way to collide points with each other (...
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"Spread" Weight Paint/Simulation Nodes
I was wondering how to to spread "weight/selection paint" (like you can a DPaint image sequence) using Geometry/Simulation Nodes, based on Object Proximity. It seems like there a simple ...
