# Questions tagged [splines]

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1 vote
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### 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 ...
• 218
65 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 ...
• 218
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### 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 ...
• 2,062
128 views

### Geometry Nodes Curve / Spline length simple math

I finally figured out, after searching for a while, how to make my Curve extend the way I want it to. But now I have the problem that I do not know how long the curve is. The goal is to multiply the ...
• 587
112 views

### How to remove instances from some parts of a curve? (Geo Nodes)

I'm trying to create a prodecural rollercoaster. I managed to include the pillars, but I want that, in some parts, the pillars don't show up, like in a loop: How can I do this? A side problem that I ...
• 169
94 views

### How does the spline-to-mesh conversion algortithm work?

I'm puzzled by the process that Blender uses to convert splines (from an imported SVG) to meshes. This is the original SVG: and as (Inkscape's) SVG ...
• 579
24 views

### When animating End Mapping, can the spline ends stay with each other until they split off?

While experimenting, I found out that the endpoints of splines can extend so that they stay together until they split off. Unfortunately, however, I do not understand how this works. I managed to do ...
• 587
1 vote
33 views

### Spline IK with control of both ends

Hiyo! I'm trying really hard to come up with a way to take a bone chain, for example of 5 bones, and use a Spline IK to match this bone chain to a curve WHILE controlling the exact position of both ...
1 vote
121 views

### How to access the position of the previous control point in a curve line in geometry nodes

This node setup is meant to generate routes for drops of water. It wraps curve lines on the surface with the geometry proximity node. Setup Result I would like each control point (except the first ...
• 63
1 vote
28 views

### How do you mark (and measure) the intersection of two lines without adding vertices?

My issue is that I would like to mark and measure the intersection of two lines so that I can run a driver off the resulting measurement. I thought of adding a vertex, however this will cause the line ...
248 views

### Geonodes: Curl a line with increasing curvature from origin

I'm trying to curl a line via GeoNodes. See here: As you can see, the line stays fixed at its origin and then curls according to an angle/curvature parameter. The length along the curve stays ...
155 views

### How can I get random phase offset per geometry node group

I want to get a wave effect using geometry nodes and splines, and I did this using a gradient texture and RGB curves. Is there any way I could get random phase, so that they all don't move in perfect ...
• 525
1 vote
139 views

### Looping an animated spline trim curve with a small delay for the start in geometry nodes

I'm having trouble looping an animation on a trim curve for a spline with geo nodes. I basically want the end of the trim to go from 1 to 0, then wait (a little delay) for the start to go for 0 to 1, ...
57 views

### curves: addings segment between to points via python

I want to add a segment between two given points, I don't want to add a new point, just connecting the two points. Does someone know how to do this with the low level api?
31 views

### Extruded spline is twice scale of resulting bevel [duplicate]

I've drawn an architrave profile and swept it around another rectangular path using the Bevel command. It looks great, except the resulting form's cross section is about half the size of the original ...
202 views

### The Raycast node not working as intended

I want to make some random splines that start from an object and end on another (in this case start from plane and end on the surface of Suzanne). Most of them follow geometry nodes setup but some ...
119 views

### Creating Curves at the Joints of Objects

It is necessary to create a weld for the tank, for this I needed to create curves in the joint area using Python, then put welds in the curve. I know how to create curves manually, but there are 990 ...
21 views

### Sample a grid of points on a selected surface?

I have a cad data imported in blender that includes a surface. My goal ultimately is getting a grid of points on a selected part of this surface, that is an array of 3d coordinates of those points. So ...
• 101
285 views

### Make helix bent into a circle have same thickness everywhere

Here is the ring I made. I bent (simple deform modifier) a helix by 360 degrees. The helix works right and is the same thickness everywhere, but this is not also true for the bent ring. I tried to use ...
• 39
18 views

### How can I get all points from beziers with modifiers without apply

I'd like to extract all spline points (no need extrapolations) from a spline. This spline has an array modifier. I extract the spline points. Example: the OBJ1 is a spline curve with 3 spline points ...
25 views

### MovieClipEditor : Exporting Coordinates of MaskLayer Spline which has a TrackMarker as parent

In the MovieClipEditor, exporting the coordinates (ControlPoints and Handles) of a MaskLayer Spline, assigning a MarkerTrack as a parent does not affect the coordinates. That is, even though the ...
• 101
1 vote
13 views

### Using the Draw tool with Screw modifier ISSUE [closed]

So I'm following Jamas tutorial on using the SCREW modifier with the draw tool, and It happens that at some point it goes bonkers. so if I'm drawing a line in edit mode close to the spline I already ...
1 vote
153 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 ...
1 vote
59 views

### cover object in beaded strings?

I am trying to create an object covered in stringed beads, similar to mardi gras beads but I'm having some problems, First, I start with a cube with the default bounce spline applied, now add UV ...
• 705
1 vote
52 views

### Create edges between objects' nearest points with Animation Nodes

I'm able to create edges between vectors in a random point cloud (the cubes), and the points on a spline. But the connections are not optimal - I assume they're matched up by index - and thus overlap ...
196 views

### 3ds max user want to find Refine and Connect tool in blender

Hi I'm a fellow user of spline modeling and I cant find the "refine and connect" from 3ds max in blender this option just create a line/segment between two points/vertices of a curve/spline ...
• 103
1 vote
85 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
151 views

### What is the 4th coordinate of spline points?

When trying to set the .co property of a curve's SplinePoints I noticed that it has 4 coordinates, x, y, z and an unknown ...
23 views

### Fill Spline based curves efficently

As you can see on the image below, I got a lot of vertices after converting the splines to a mesh. The splines a drawn manualy from an old map. I already started with the filling process. Selecting ...
• 155
1 vote
120 views

### Instance Objects on a Line Mesh or Spline

I want to create an antennae for a wasp that I could move around easily for animation. I want to use cone objects that are instanced on a line and are oriented to the next point. I thought about using ...
135 views

### Animation Nodes: How to create splines between a particle system and an object based on distance?

I would first like to mention that I am a beginner to Blender and Animation Nodes. I am trying to create an animation where an icosphere orbits above a plane that emits particles, and if the particles ...
39 views

### Help animating objects with different paths that merge

I need help animating 2 objects following 2 different paths, At some point i need them to ''merge'' together and continue. I did this with two different splines and the constraint ''clamp to'' the ...
290 views

### Fill extruded spline

I would like to fill this extruded spline. In 3ds Max you extrude the splines and it automatically adds a cap. I would like to reproduce this in Blender. Any help would be appreciated. Thanks.
• 107
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### 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
• 63
141 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 ...
• 63
1 vote
62 views

### Animation node - How to change the shading (smooth or flat) of a series of splines?

I managed to create an animation with concentric circles in animation nodes, made from points in a circle that I duplicated inside an object output. I want to change the shading of the splines (...
77 views

### how to find close points between two values in animation nodes

I'm trying to make some splines and I found "find close points" node but the problem is it has just one value : max distance , but how can I make edges between two values min and max? or ...
• 480
214 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 ...
108 views

### Drawing/editing spline shapes. How?

I have been using 3DS Max for years in my profession as an exhibition designer, I use extruding spline shapes quite often. A simple example would be drawing a rectangle to the size I need and extrude ...
• 21
1 vote
85 views

### (Animation Nodes) How do I get an object to follow a spline without rotating along it?

Fairly simple question but I'm new to animation nodes and don't know how to do this. I want an object to follow a spline using the Follow Spline Action, but maintain its rotation. Basically like ...
1 vote
28 views

### how to copy an animation from one mask to another mask

I Have an animated mask. I can copy the splines to create a new second mask of it very easily, but the animation does not appear on the dopesheet of the second mask. Is there a way to copy this ...
1 vote
40 views

### Defining locked start and end points on turbulent splines in Animation Nodes

I'm attempting to make an animated "sound wave" effect using AN. So far I have the bouncing spline looking the way I want it -- How do you define specific points along the spline to NOT ...
• 127
37 views

### For loop splines amplified ! , why? How can I stop it?

I am creating a for loop to connect pairs of objects by a Splines To understand better image atoms in a molecule. It seems that every time I create a new spline is in someway taking in consideration ...
92 views

### Ice-Rock Spell Animation Nodes

I'm trying to get effect below in Animation Nodes. The effect seems simple enough, I just don't know how to set it up. Anyway thanks for looking.
229 views

### cut out a piece of the terrain

See image. I'm trying to cut out a small piece of the terrain to use for particle system (scatter trees, grass etc). I used the knife tool to draw the area (orange line). How can I then delete the ...
• 127
106 views

### Animation baking error

To showcase the problem the easiest way, this is what the issue looks like: https://youtu.be/esihE0ob7U8 As you can see, the track chain makes a momentary 'jump' when the baked animation is played ...
94 views

### Is there a faster process for converting splines into rigged meshes?

I wanted to have my character's arms be more akin to that of a cartoonish noodle, so I decided that the best way to accomplish this would be to create a Bezier curve, create a mesh out of that curve ...
90 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 ...
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