Questions tagged [splines]
The splines tag has no usage guidance.
118
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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 ...
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3
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1
answer
86
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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 ...
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58
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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 ...
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57
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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 ...
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41
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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
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2
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122
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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 ...
- 1,103
2
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1
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96
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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, ...
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86
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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 ...
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132
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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 ...
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167
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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.
...
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3
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83
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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)...
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161
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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 ...
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68
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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 ...
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249
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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 ...
- 1,047
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36
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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 ...
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16
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more density curve on start [duplicate]
How to make a denser curve at the start via geometry nodes?
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90
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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 ...
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2
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800
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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 ...
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46
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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 ...
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13
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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 ...
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130
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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 ...
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758
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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 ...
- 2,470
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339
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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 ...
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147
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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 ...
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269
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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 ...
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195
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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 ...
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390
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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 ...
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3
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2
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966
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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 ...
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2
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2
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502
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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 ...
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188
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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
...
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42
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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 ...
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431
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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 ...
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606
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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 ...
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43
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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 ...
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723
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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 ...
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647
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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 ...
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2
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440
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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, ...
2
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1
answer
232
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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?
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73
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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 ...
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2
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1
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588
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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 ...
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199
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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 ...
3
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325
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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 ...
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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 ...
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1
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419
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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 ...
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100
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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 ...
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94
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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 ...
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369
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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
...
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212
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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,
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339
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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 ...
0
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48
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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