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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Help with conveyer belt [closed]

I want to make a conveyer belt with an active cube falling on top of it, but when I active the animation, the cube go away insted of falling. Why this is pass? Plis help
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Align both ends of a bone to a curve without stretching?

I'm trying to rig a series of bones that follow a curve and stay an equal distance from eachother and have strings that stretch between each segment. The thing that makes this a little complicated is ...
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4 votes
2 answers
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Animating the hole in a boolean object

I want to create a boolean object where the object being subtracted is an extruded curve I can animate. As I currently understand booleans, my curve needs to first be converted to a mesh, which can ...
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1 vote
0 answers
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Animating a spring in a unity compatible way

I want to model and animate a spring in blender. But my animation seems not to be compatible with unity. What I tried so far: Curve Created a curve and added volume to it Added a Bone Mapped the bone ...
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0 votes
3 answers
41 views

Distribute circles evenly along a curve

I need the circles to appear from the center with a gap equal to one circle and at the end gather towards each other Here the circles came out from the center one by one with distance from each other ...
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6 votes
2 answers
505 views

Is there a way to preserve the thickness of a (poly) curve?

I have a poly curve which makes a square, so the thickness of the curve remains constant. When I move one of the handles downwards, elongating the shape, the thickness of the curve changes: Is there ...
2 votes
1 answer
28 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 ...
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4 votes
2 answers
87 views

Geometry Nodes: Control over Sine wave used to Set Curve Radius

I would like to control the radius of a Curve using a Sine Wave, such that the diameter of the resulting mesh gets thicker and thinner along the length of the Curve. I've managed to achieve this with ...
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0 answers
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Knot is loose, untight, lax

I made this in blender by bezier curve. I think just make thickness in zbrush. Do you think it's a bad idea? Is there any way to tie a knot better?)
3 votes
1 answer
48 views

Total length of a complex curve with many points

I'm trying to measure the total length of a complex curve with a large number of points. My initial input is a set of curves from an imported dxf file. I selected the section I wanted to measure and ...
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2 votes
2 answers
44 views

How to add text (or texturize it) on a curve?

I'm trying to add a simple text to an Archemedean curve spiral, just like I did with this similar shape, which is a mesh Mesh However I need to animate this to do a simple squash and stretch, which ...
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0 answers
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Import SVG and Extrude Multiple Curves At Once MAC Blender 3.0 [duplicate]

I am trying to extrude multiple curves at once on a MAC Blender 3.0. I am having to extrude each curve separately. Is there a way to do this to all 240 curves at once?
1 vote
1 answer
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How to fill a Bezier Curve and reduce its vertices

I'm doing a model and there is a part on the clothes that I think is easier to do with curves (the one marked with red) but after using the curves tool to draw the figure, I can't find an option to ...
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2 votes
1 answer
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What is the equation of an F Curve?

My goal is to graph an F curve on an external program. I've read that an F curve is a bezier curve, but when I plug in values using a start and end keyframe and their handles into a cubic bezier curve,...
1 vote
0 answers
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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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1 vote
0 answers
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Trying to find a way to connect points from a point cloud depending of several conditions

I would like to build a little experiment with Geometry Nodes. I have a curve, with a Curve to Points node. My goal is to connect some of those points, depending on some conditions, like no ...
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2 votes
1 answer
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I want to roll the tape so that it follows the circle nicely

I want to roll the tape so that it lines up nicely with the cylinder. When viewed from the front, the surface where the tape meets the cylinder is distorted as shown in the image. Currently, I ...
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2 votes
1 answer
132 views

Help extruding a curve

I created this curve that I want to fill in but when I hit F, it says Error: Cannot Make Segment. I want to fill this in so I can then extrude it. What am I doing ...
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1 vote
1 answer
57 views

How can I design a coffee cup with a specific handle?

I'm designing a coffee espresso cup. I can manage it except for the handle. What is the more precise process to design the handle (like the one in the photo)? Thank you
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1 vote
1 answer
80 views

Create a set of points that curve based on face normals

I have 2 given locations to create a path between two points: the start and end points. I want to create a method in python that will give the points/vectors to create a curve between the two and use ...
0 votes
1 answer
31 views

simulate the displace modifier on a curve using Geometry Nodes [duplicate]

There is no displace modifier for curves in Blender. Would it be possible to simulate it using Geometry Nodes ? My goal is to be able to softly randomize the position of the vertexes of my curves. ...
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3 votes
0 answers
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Geometry nodes Spiral demo

I've been trying to achieve this result for a long time, but I still couldn't figure out how to do it. There's this sample image in the Blender manual that is exactly what I want. Procedural spirals ...
1 vote
2 answers
35 views

How to bend a closed mesh spherically? [duplicate]

I want to project a mesh onto a spherical surface. For this I use the ShrinkWrap modifier. With the edge it works very well. But it doesn't work with the face because I can't generate a grid. Draw a ...
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1 vote
0 answers
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How can I catch the XYZ coordinates for a curved road? [duplicate]

I'm making a curved road made with Geometry Nodes but I'm not able to get the mapping right. I kind of managed to get the X and the Y right, but I'm just not able to also get the Z right. As you can ...
2 votes
0 answers
20 views

3D curve with angles does not produce consistent and straight profile

I have a mesh and separated a line of vertices in order to create a curve object out of it. Then proceeded to add a custom profile to it. But the issue is that the output of the profile is neither ...
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0 votes
1 answer
24 views

Can't extend bezier curve without creating infinite loop curves

I'm trying to make some basic ribbon Bezier curve elements and I can't seem to extend without making infinite loops.
0 votes
1 answer
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Convert animated 3d curve to Grease Pencil

When I select the curve and do convert to -> grease pencil the animation is lost. This is really frustrating. Is there any way to maintain the animation of an animated 3d curve? In my case I use an ...
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3 votes
1 answer
172 views

How to align an object along a spiral without distortion?

Goal: I am trying to create a helix made of stacks of an object. How I tried to do it: I created an Archimedian Spiral with the desired dimenisons Since the object itself always is distorted when I ...
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0 answers
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How to make curves based on textures?

I have a circuit board texture and want to add something like a curve so I can have things follow the texture. Is there any way to make curves based in textures?
1 vote
1 answer
25 views

Parenting to a Curve with Python leads to unexplained results

I'm trying to set a Curve as a parent to objects using Python. My Curve's position is 0,0,0 at the World Origin. When I run the script below, the cubes get parented to the Curve and jump to a ...
0 votes
0 answers
30 views

I can't get Fill Caps to work on Bezier Curves

I'm a Blender newbie, and using Blender 2.80 on an older MacOS to modify an existing model. Every Bezier Curve tutorial I've followed shows "fill cap" as a simple click of the fill cap box - ...
1 vote
1 answer
76 views

Remove chamfers from curves in geometry nodes

I have a mesh with a bunch of vertices previously sorted, from here I am able to create, with this nodetree, a series of splines. Now I need to get rid of the remaining chamfers,like this: I've been ...
2 votes
2 answers
129 views

How to bevel a plane made of bezier?

For a while I've been trying to bevel a plane made with Bezier Curve. My goal is to bevel the entire rim outwards. How can I extrude so that the thickness of the surface is always the same in all ...
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0 votes
3 answers
68 views

Geometry Nodes - Tilted Curve Boolean

I'm trying to create a shape that is the boolean difference of a tilted curve and a cube using geometry nodes. If the curve is not tilted (twisted) - the result is quite smooth and clean and quite ...
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1 vote
1 answer
34 views

Converting Bezier shape into mesh with nicer topology

I have an SVG image of a letter "t" (contains some curved and some straight segments), which has been imported to Blender. After the import, everything is nicely defined as Bezier curves. ...
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2 votes
1 answer
85 views

How to offset objects in relation to the curve using geometry nodes?

I have a simple geometry node that places spheres along a curve. I don't know much about geo nodes, but I'd like to know how to modify it so that I can set the offset of the sphere in relation to the ...
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0 votes
0 answers
16 views

highlight bezier curve to make it more visible [duplicate]

I am trying to trace some formes with bezier curves. But the overlays are only showing the handles. It's kind of hard to see the curve itself because of the mesh in the background. I tried to add ...
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2 votes
1 answer
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How to make the curls in an icecream?

Normally, in tutorials, we can make ice cream in this shape: However, I want to make curls of this shape: The curls of the ice cream in the second image are much more detailed and complex than in ...
2 votes
1 answer
227 views

How to align instances to mesh normals ? (mesh created from a curve and a profil)

I read a lot of posts about this but I couldn't find an answer for this case. I'm trying to create a vine with spikes. Its growth is controlled by an empty and a trim curve node. I distributed points ...
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0 votes
0 answers
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FCurve modifier custom function?

I know that FCurve modifiers allow for built-in functions like Sine/Cosine etc. But is it possible to use my own function instead like: $$f(x)=sin(x \times a)+|sin(x \times b)|$$ with $a$ and $b$ as ...
0 votes
0 answers
31 views

shrinkwrap modifier does not correctly snap a bezier curve to a surface

I want to animate a car driving over a desert landscape. I want to animate the car along a path (constraint/follow path). in order to snap that path to the landscape, I subdivided the path (30 times) ...
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0 votes
0 answers
8 views

How to make a shape go around curve using array modifier and curve modifier [duplicate]

I have a shape which I'd like to follow the curve. when I select the Bezier curve, I'm getting incorrect results. I have applied to both my objects all transformations. I also change the deform axis, ...
5 votes
4 answers
369 views

How can the Screw modifier be implemented using Geometry Nodes?

The Screw modifier allows one to revolve a profile curve around an axis to generate geometry. However, there is no such Geometry Node type. Instead, Curve to Mesh is supposed to be a more general ...
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1 vote
1 answer
83 views

Using Spline Parameter As a Parameter for the Set Position Node

Blender 3.1.2 I am making a twisty tree trunk. There is a curve for the basic shape of the trunk and a curve used for the curve profile in the Curve to Mesh node. This profile curve is a cluster of ...
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0 votes
0 answers
30 views

Is it possible to deform a curve according to a cloth?

For example, take this red cloth that's been hooked by the empty's. There's a green curve with geometry right on top of it. Is there any way for the curve to deform according to the cloth, when the ...
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0 votes
0 answers
8 views

Hook to curve points does not center hook on curve points

i have this curve here, if i hook one vertex to the curve, the empty does not place on the curve point. Why not? And how can i achieve that? Ok, i just found out, i can delete the object in the ...
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1 vote
1 answer
54 views

Polynomial curve sketching on blender

I know that blender is able to draw mathematics curves using function, example: How to draw a flat ellipse surface in Blender with the following known dimensions? Is there any code or method to insert ...
0 votes
0 answers
27 views

How do I create stitches the easy way with loop tools

So here are two images, one before creating the stitches, (using skin modifier, and making the small edge loops small cubes that look like stitches) How do I make it look like this without the above ...
1 vote
1 answer
74 views

Right angle corners issue with Instances that follow Tangent Curve for Brick Wall with Geo Nodes

I've created a brick wall using Geo Nodes, with instances from separate brick object. I've also used proximity to remove a portion of the wall for damage. Unfortunately the corners come out rounded ...
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5 votes
1 answer
138 views

How to correct curve tilt, tangents and normals of a curve?

If you separate the faces of a mesh with Split Edges and convert them to curves with Mesh to Curve, these curves are twisted in ...
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