Skip to main content
Share Your Experience: Take the 2024 Developer Survey

Questions tagged [splines]

The tag has no usage guidance.

Filter by
Sorted by
Tagged with
4 votes
3 answers
342 views

How can I separate curve from profile using Geometry Nodes?

How can I separate curve from profile like shown in the example image below?
0 votes
0 answers
23 views

How to draw an irregular shape made of lines, arcs and splines?

What is the most straight forward way to draw a irregular shape made of lines and arc and spline, as shown in the screenshot? Thanks for your help.
0 votes
0 answers
8 views

How to export curve vertex animation to gltf/glb file?

I have animated a curve with 2 vertex in python by changing the position of the two vertex coordinates, and when exporting to glb the curve does not move. I am using blender 4.1. I animated the curve ...
0 votes
1 answer
410 views

Getting 90 degrees out of a bezier path

So trying to create this wire and I can't seem to find the solution for how to keep the end from collapsing, or pinching, on itself when making a turn like this. Tried adding more points but that ...
1 vote
1 answer
38 views

Geo Nodes: Set object scale between spline points

Coming from 3ds max and Raiclone to create parametric models like houses I wonder how to change the scale of an object between 2 spline points on a multiple points spline: I can get that to work ...
1 vote
2 answers
84 views

Planes on Curves

My blend works, but when I wanted to respond to this post "Geometry Node: How would I convert a series of Curve Lines into a series of Planes", I proceeded using an empirical approach. ...
1 vote
1 answer
472 views

3ds max: Copy, Instance, Reference - a similar function in the blender. An example of the 3ds max, is in the description

I have a question that I can't find an answer to anywhere. More precisely, I do not know how to ask such a question correctly in order to find an answer to it. I am interested in whether there is ...
0 votes
0 answers
47 views

Define custom Spline Index OR Rebuild Sample Curve Node

Is there a way to set a splines index or otherwise store an attribute on a spline that can be read as 'curve index' in the 'Sample Curve Node'? I'm asking because i have a setup where meshlines are ...
0 votes
1 answer
36 views

Flickering problem on a curve

Hello everyone,my project is to animate a growth of branches on a trunk, and other branches on the firsts, and so on... To do so, in order to offset branches with the seem radius that the trunk have ...
1 vote
3 answers
88 views

Taper a geonodes curve to center of curve & adjustable via group input?

I've created and resampled a curve and want to smoothly taper it to the center. I'm able to do exactly what I need using the spline parameter node and a float curve, but the problem is that I'm unable ...
0 votes
1 answer
276 views

Splines Animated by Sound - Animation Nodes

I've just made the change from Blender 2.79 to 2.81a. I've also updated my Animation Nodes to 2.1.4. Both are installed and working as expected except for the Sound Baking function in AN. Some ...
0 votes
1 answer
257 views

how to replicate spline and randomize bevel

I would like to randomize bevel size of the replicated spline. It look like Curve Object Output - Bevel Depth - doesn't work with list of numbers. Is there any other options? Thanks
0 votes
1 answer
52 views

How to set the normal value of a point on a spline?

How does one go about setting the normals of individual points on a spline? Adding to that question, are these attributes listed on the spreedsheet window? Part of my confusion is figuring out the ...
0 votes
1 answer
27 views

spline node with randomized siblings (smooth end and start converge to a givven spline)

I am trying to get the following spline effect. A group of splines (maybe starts from a grid), who follow a given spline but with some random offsets to the given spline. though this offset should be ...
2 votes
0 answers
50 views

Criteria for Spline direction

I often work with instances or deform geometry along splines, and I consistently find myself struggling to control the output of my operations. Blender sometimes changes the spline direction randomly ...
2 votes
2 answers
160 views

Curve tilt of instanced curves to follow sampled geometry

I have a node set up that requires curves to follow a plane. (the plane is manipulated outside of geonodes and the curves follow) Is it possible to have the curve tilt follow the normals of the plane? ...
1 vote
1 answer
260 views

How to animate splines using animation node

How to animate linear spline (Outline) on a text like its been drawn from start to end of the word using animation nodes,
1 vote
2 answers
35 views

Help finding a proper method to make roads, tracks, superelevation

I have some experience with Blender and found it impossible to make optimized roads with proper superelevated corners (road camber/tilt). I looked into Race Track Builder on Steam for track building ...
0 votes
1 answer
24 views

How do I change the length of the secondary bone segments with Geometry Nodes

I am trying to make spines generated on a Bezier curve and have it 95% working. The rotations are all correct and the scaling is how I like it BUT I cannot figure out how to change the length of the ...
0 votes
1 answer
373 views

Problem with imported SVG - cannot convert curves to mesh properly

I imported an SVG caption from CorelDRAW and all letters are fine and get converted nicely to mesh, except the first one - "S". When I convert it to mesh it disappears. Also, it's the only ...
0 votes
0 answers
30 views

Geometry Nodes - Reversing splines depending on distance or radius of start and end points

I have tree object constructed with multiple splines. I'd like to make sure the end point of each spline is always the point facing outwards from the center of the tree. I'd like to do this by either ...
3 votes
1 answer
99 views

Capturing Spline Factor Attribute for Linear Interpolation on Geometry

I am attempting to perform linear interpolation using the spline factor, transitioning from yellow altitude to green altitude. However, when I try to capture the factor attribute, I consistently ...
1 vote
1 answer
124 views

Get the length of the longest spline in Geometry Nodes [duplicate]

I'm working on a tree that needs to have a vertex color gradient depending on how far each vertex is along the branches of the tree, normalized in a 0-1 range. To do this I'm trying to get the length ...
1 vote
1 answer
111 views

How to model coiled up cables

Blender to the rescue? After working pretty extensively with Solidworks for 2 years, I was tasked to model some realistic looking coiled up cables for solar panels. SW is definitely not made for that ...
0 votes
1 answer
104 views

Spline IK moves weird and unpredictable

I have a Dog Model that I rigged from scratch. I used spline IK constraints for the Eyelids and Lips. Whenever I move any Ctrl Bones that are hooked to the related bezier curve, the movement of the ...
6 votes
2 answers
152 views

Get information about spline cyclicity

How can I get the information whether the spline is cyclic or not? The example shown above does not work. What is wrong with my approach? With this method (Capture attribute), I manage to get ...
2 votes
1 answer
205 views

Geometry Nodes: How to find the intersection of two splines (not line segments)

This is not the same question as Geometrynodes Curve Intersections - or at least not how the answers interpreted it. That question solicited answers dealing entirely with two straight line segments, ...
2 votes
1 answer
173 views

Geometry Nodes: How to Generate ID based on order on X axis

I have a curve object with multiple splines. I can loft them, using something like the Higgsas GeoNodes "Loft Splines" node-group. This kind of approach uses the spline Index to determine ...
2 votes
1 answer
328 views

On mesh to curve geo node, how to get a seperate spline per edge

I am working on a roof project and want to automate the placement of ridge tiles on selected edges of a roof. Selecting the appropriate edges I was able to master. Now, ridge tiles require a direction ...
0 votes
0 answers
393 views

Geometry Nodes Curve deform array on multiple splines

Since I seem to have made it too complicated. My goal is to line up objects with deform on a curve, but in order not to constantly use a new curve, it should also work with several splines of a curve. ...
3 votes
1 answer
137 views

Make profile curve resolution variable across the spline

With geometry nodes I would like to convert spline into mesh in a way, where result mesh (tube) profile resolution is based on the main spline factor. Like for example on start of the spline (factor 0)...
2 votes
1 answer
284 views

Offsetting a 3D bezier curve on the XY plane in Geometry Nodes

I have a catenary bezier curve that I generated in Geometry Nodes from mesh vertices. I would like to duplicate and offset the curve on the XY plane (and make it work for both cyclic and non cyclic ...
0 votes
2 answers
1k views

The bones connected to the Spline IK do not follow the whole armature - Still need help

Okay, so I have a mesh that has a tail so I googled how to rig the tail and it said to use a Spline IK restraint. I built the spline on the bones of the tail and now when I move the whole armature, ...
1 vote
1 answer
89 views

Keep resampling count on spline after being divided, geometry nodes Blender

I have a sequence of splines which its being resampled with a fix number each one, this number represents how many instances each spline will be instancing and its is saved in an field coming from ...
0 votes
1 answer
422 views

How to get Splines/Curves generated with Geometry Nodes on Mesh object using bpy?

I add Geometry Nodes to the default Cube but instead of using its geometry I use a Curve Line: How to get this Curve Line data with bpy? I've tried the following ...
0 votes
1 answer
47 views

Spline "motion tracking" indicators

Learning blender (3.4 installed), I see people creating a spline then turning on motion tracking to view the path with arrows. They do this with the Viewport Overlays drop-down, enabling the Motion ...
0 votes
0 answers
16 views

more density curve on start [duplicate]

How to make a denser curve at the start via geometry nodes?
3 votes
0 answers
106 views

How does 'Trim Curve' node evaluate the order of splines?

I'm animating trimming of Curves with Geo nodes. My setup looks something like this. I'm delaying the start of the animation for multiple curves. I don't know how to control the order in which the ...
1 vote
2 answers
1k views

Curve Index of control point

I have a Curve object with two Splines and I want to use the Sample Curve node in conjunction with the Set Position Node to move the curve points. But with two splines all points are mapped to the ...
0 votes
1 answer
56 views

Resample Curve Clears Tilt

I have a cluster of generated splines made to look like plant stalks. They are instanced on points and then I set their individual properties. In order for me to set the curve radius I have to ...
0 votes
0 answers
13 views

Connect Planes generated by coordinates to a curve

I have some coordinate data generated by an app that I'm generating planes which allows me to visualize in 3d space a path (see screenshot).. Ideally this is good but it would be awesome if I could ...
2 votes
0 answers
156 views

Geometry nodes tries to join splines when deforming mesh along a curve object

EDITED: I'm trying to deform copies of a mesh-cube along a curve (and eventually animating them moving along the curve). My problem is that as I'm drawing multiple splines for the curve, the objects ...
4 votes
2 answers
970 views

Geometry Nodes: How can I target each spline individually in a curve object?

Let’s say I want to build ladders with geometry nodes, using a bezier spline as « main » object. I would duplicate the spline to have two rails and add points on the curve to instanciate the ladder’s ...
0 votes
2 answers
172 views

Animation nodes - Replicate splines - random bevel size

Id like to build set of spline with applied vector noise to simulate lightnings. I have followed Chris.P. tutorial and its done. But I have two problems. How can I set different Bevel Depth on each ...
3 votes
1 answer
459 views

Set Curve Radius of **Realized Instances** by Spline ID

I have a series of Splines (10 in the below example), created by realizing the instances generated by an Instance on Points node: I am attempting to randomize the radius of these Splines. If I ...
1 vote
0 answers
176 views

Geometry Nodes - Move points from other Splines using proximity

I have a horizontal curve (red node in below image), which is instanced on a vertical curve (green node in below image). The vertical curve has 3 points (ID 0, 1, 2) and the horizontal curve is ...
1 vote
1 answer
335 views

Rotate instanced curve vector to point away from original curve

I am utilising aspects of the following tutorial in a project but am deviating from the tutorial: https://www.youtube.com/watch?v=T__5FyCHL4E&t=1273s&ab_channel=MaxEdge So I am instancing a ...
2 votes
1 answer
228 views

GN: Convert spline factor to gaussian curve function

How would I convert spline factor into a gaussian curve using math? I am able to do it with a float curve but would like to make it parametric. example with float curve: EDIT: figured out how to ...
0 votes
1 answer
181 views

Is it possible to combine spline IK for the body and regular IK for limbs?

I've got a centipede model with an IK rig. I would like the spine to move along the spline curve in the background, following its curvature, while still letting me pose the legs like normal to make ...
0 votes
0 answers
440 views

Geometry Nodes : handle each spline individually

using Geometry Nodes on a curve object, is it possible to handle each spline separately ? For instance, I would like to compute some stuff depending on each spline's length. But the Curve Length Node ...