Questions tagged [bezier-curves]

A Curve is an object that is expressed in terms of mathematical functions, rather than as a series of points such as vertices. Use this tag for any questions pertaining to the "Curve" Object type in blender. Use this tag for questions about curve object types in Blender.

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Convert a circle into a spiral-shaped mesh via a Bezier curve?

I've been wondering, is possible to take a circle and turn it into a spiral-shaped mesh via a Bezier curve? To elaborate I'm trying to make a creature with a spring-like tail and while I can make a ...
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How to create a curved path with a constant/fixed slope?

I'm trying to create a curved path that goes up (or down) with a fixed slope. Moving the points manually by hand is not very accurate and results in small bumps that are actually very noticeable. I've ...
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Passing a curve into a GeoNode group?

I have a Curve object which I would like to use as a base curve for a GeoNode group; essentially using an existing curve with the curve nodes. This feels like it should be a pretty common situation: ...
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3 votes
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Use Curve Control Point Radius to Scale Mesh in Geometry Nodes?

So I've been trying to build a classical column generator using geometry nodes and run into a bit of an issue. The way my generator works so far is: I input a column height and the number of column ...
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Any way to make this mesh (hair made from curves) manifold without having to manually retopo it?

So I'm working on this character figure that will be 3D printed, and I just finished the hair base, except it looks awful from below because of course it does :P I was wondering if there was a way ...
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Bevel Geometry and Array Modifier on a Polyline Curve Has Varying or Uneven Thickness

I'm trying to make a curve that has some geometry applied to it. My two options are bevel geometry or array modifier. This is what I have so far. Following one is the result of bevel geometry on a ...
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I selected "curve A" as the bevel object of "curve B", but changing the scale of curve A from geometry nodes doesn't affect the scale of curve B

These are the objects involved: I have set the BezierCircle curve as the bevel object for the Plane.001 curve. This is the node setup for the BezierCircle curve: The nodes were meant to scale the ...
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Can we scale a curve relative to the distance between two objects? I tried doing it in geometry nodes, but curves aren't supported there

This is what I made. It works well in scaling meshes, but I can't seem to do anything about curves.
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how to deform or animate a object like this

how should I approach it if I want to apply a cover on a phone, I have used curves before but I don't know if it's possible to make it work like this, Rigging the cover might work but I feel like the ...
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Make Vertex Radius Affect just One Axis on Beveled Curve

I have a curve with a bevel applied. I know varying the radius would make parts of the geometry bigger or smaller. What I want is the radius to increase or decrease to only affect one axis. basically ...
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Is there any way to render a perfect curve just like pointclouds in blender?

When we use the 'curve to mesh' node in geometry nodes, sometimes we cannot get an ideal results because mesh overlap frequently happens and leads to bad shading on surface, just like this figure: So ...
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How to project a curve on a plane?

I have a bezier curve and a plane as below. I would like to project the curve on the plane. Is this possible?
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Create a Disjointed Curve Using a Python Script

I'm trying to create a curve with a python script but I want some of the edges to not be connected. This is what I have so far ...
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Point instance and Curve line

I'm doing a tutorial of a leaf on youtube. I need Point instance and Curve line but in 3.0 and more versions there's the point instance and in the previous there is Curve line. Which version of ...
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Baking a Blender modifer to shape keys

I am attempting to export a mesh with a build modifier on it to an gITF animation (to simulate a motion trail). I currently create a curve with the movement data, convert to mesh, and then use the ...
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Curves to Particles (or Curve Rigging) [duplicate]

Does anyone know a method of turning many curves into exact hair particles? Some background: I have a very dense eyelashes model, where every strand is modelled. Rigging them has proved impossible, as ...
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2 answers
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geometry nodes - cut curves / insert vertices

I have build a quadraliteral curve with another quadraliteral curve as "notches". Is there any possible way to insert vertices at the point where the vertex / point of the one hit the other ...
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Making a Closed Curve Using a Python Script

I'm just trying to make a closed curve using just python for a script that I'm writing. This is what I have so far: ...
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How to make clothes follow character along a path

I'm trying to get this character to follow a path. I used the method of selecting the armature, then the curve, hitting ctrl-p and hitting follow path. However, when I hit play, the character's ...
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1 answer
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Can not select curves control points

I am trying to select two ending control points on a curve in order to scale them, however, blender doesn't let me do it like here https://www.youtube.com/watch?v=BqWYgrXw7Jk Deselecting handler ...
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1 answer
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Noise on a Curve with python

I would like to apply noise to a curve where this noise should behave like a noise texture does in the geometry nodes. In this script a small noise has been added to the curve. This is not a problem ...
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2 votes
2 answers
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Problems with making a domino effect

I tried to make the typical domino effect in Blender. The first time it even worked, the 2nd time it didn't. I added the Array and Curve modifier to the domino and set the curve for both modifiers, ...
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How to put a keyframe on render visibility through python on blender

I'm trying to automate an application that involves a lot of objects appearing and disappearing, then a thought in using python to do this bot I don't know the specific command to create a keyframe ...
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2 votes
1 answer
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Can't get simple array to follow curve

For the life of me I can't get this simple array of planes to follow this Bezier curve which runs over a terrain (hidden), this is the closest I could get by adjusting modifier settings. You can see ...
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2 votes
1 answer
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Bezier segment node not accepting inputs

I'm trying to randomize the start and end handle position for a "Bezier Segment" node, but any time I connect a random value vector to the input socket I just get an error (see example image ...
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3 votes
1 answer
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Why face filling is not fully complete?

I make curve using Bezier Curve, when i tried to fill the face at one of the end of curve, the face is not fully filling like this Even though i have convert it from curve to mesh and apply the scale,...
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3 votes
1 answer
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Instance on Points with curves problem

First of all: excuse my bad english :-D i have a little problem over here. i want to generate curve circles with "instance on points" on a curve rectangle. This is what i want to have: But ...
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Why can't I add Geometry Nodes Modifier?

I was fallowing a tutorial where a guy adds Geometry Nodes Modifier to a curve. Tried to do it but I can't. "New" button is inactive. It works only when I convert the curve to a mesh but it ...
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Having Issues With Path Tool

This has been bothering me so much, I am having issues with the path tool. Not only does it not move properly, but it is offset and not in the center of my objects, which makes it immensely hard to ...
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Fireplace with Curves

I'm trying to build a fireplace with curves. I tried watching a YouTube video on this exact thing but the person didn't explain what they were doing well enough... https://www.youtube.com/watch?v=...
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1 vote
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Snapping Bézier handles on Blender 3.1

Previously, in Blender 2.83, it was possible to snap Bézier handles to each other with "Snap to vertex". When I tried to do this in Blender 3.1, not only was I unable to do it, but it also ...
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2 votes
2 answers
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Geometry Nodes: How to distribute instances on a mesh line to prevent crowding

I'm making a procedural stone path in geometry nodes but I've been struggling with correcting for distortions as the curves change. The issue I've been really stuck on is in the pictures below. As I ...
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6 votes
1 answer
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How do I interpolate two Bézier Curves and create instances in between?

I am trying to create realistic book pages. I've created two Bézier curves for the top and bottom pages, and now I'm trying to "interpolate" them and create instances between the two curves. ...
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Bottle label with multiple texture layers

I'm creating a paper label on a gin bottle with multiple texture layers and need some advice on how to go about it. The layers are: Paper stock with procedural bump texture using noise. Black ink, ...
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3 votes
2 answers
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How to convert on-surface curve to seam?

I have a cylinder-like surface and a mirrored bezier curve shrinkwrapped onto it. I'd like to use the curve as a seam for UV mapping, actually for pattern making purposes. How can I create from the ...
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2 votes
1 answer
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Geometry Nodes - Solving Uneven Profile Curve Thickness with Mesh Extrusions?

I've been trying to build a Geometry Node group that in part is able to create a mesh of even thickness around a three-dimensional curve that features sharp corners. After much research I'm aware that ...
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1 vote
1 answer
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Extruding a circle along a curve resulting in a flat end at one end

So I extruded the circle along the line but every time it ends up with a flat end. The start is fine but I can't get it to stay circular.
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1 vote
2 answers
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Curve resolution limited

The curve resolution is limited, and I would like it to be higher. Usually, you can manually increase this, but in this case, it just resets. Is there any way to remove this limitation?
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what could be the best way to make stuff like in Evan Fay's designs?

I'm talking about this curve like cloth material wrapping around the body frame from Lawless Chair/Lawless Sofa. Is there a way to implement a geometry node set-up that could wrap around the mesh of a ...
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5 votes
1 answer
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Blender bezier curve extrude not working correctly

I'm trying to make a road model. but when I turn up the Extrude of the curve the mesh looks wrong : I already tried making a profile instead of extruding the curve ...
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1 vote
1 answer
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Send Spline Attribute from Geometry Nodes to Shader

I am currently trying to get into Geometry Nodes. Right now I have a problem: In my scene there is a Curve object with 3 splines. It is important that the splines are not created in the geometry nodes,...
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4 votes
3 answers
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Is it possible to dynamically collapse all edge rings or scale a tube thickness to zero using Geometry Nodes? [duplicate]

Is it possible to dynamically collapse all edge rings or scale a tube thickness down to zero using Geometry Nodes so that i'm left with a curve originating from the center of the original object? Let'...
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How would I flatten a bezier curve?

so I'm an a bit of a blender noob and I'm having trouble figuring out how to straighten/flatten this curve (on the Z axis). Can someone explain how to do this?
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1 vote
1 answer
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Inconsistent thickness of curve profile using geometry nodes

I've been following a Youtube tutorial on procedural fence using Geometry Nodes Everything seems fine except there is a problem with the thickness of curve profile. On straight lines which don't ...
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Blender curve shape glitch/problem

I'm not completely sure if it's the curve but these random line figures keep appearing in the background and I don't want it. They're the ones with no vertices. Higher resolution image
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1 vote
0 answers
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Bezier curve geometry selecting same object - Creating 2 different pipe sizes [duplicate]

Would be so grateful if someone can help me here. I am trying to create a pipes along bezier curves, and eventually (after i get over this hurdle) create different thicknesses along the pipes. But ...
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3 votes
1 answer
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How Do I Rotate Selected Curve Points From Specific Axis?

I feel like this is easy but I'm stumped: How do I rotate these selected points on my curve, from Point A, where Point A is the anchor point and the other two points sweep out accordingly as I rotate? ...
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2 votes
1 answer
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Create petals for cylinder flower in Geometry Nodes (3.1) (question 1)

I've been following a tutorial by Kaizen I managed to get it to work the way he does it which is fine. Then I tried to apply it from the ground up step by step but doing it in a different way. This is ...
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2 votes
1 answer
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Cycles consistently dropping the same single object from render randomly

I made a animation of about 750 frames, and every time I render the sequence (tried a quick version with 500x500px/200 max sample and 1080x1080/1024 max sample) it drops a object from the render at ...
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1 answer
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The Curve Become Horny After Bevel

I am trying to model a track for wheel using curve. But I get the bottom rail to have horns like this: The orange curves are the reference used for beveling the linear curve as it is informed at the ...
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