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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Is there a low level alternative for bpy.ops.object.convert(target='CURVE')?

(Note: Somebody asked there nearly the same question as me and got a very nice answer. However, this was to convert an object to a mesh. I have exactly the same context as this person but I want to ...
Arnaud's user avatar
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7 votes
1 answer
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Is there any way to turn coordinates into curve?

I recorded fly camera movement, so I got keyframes with coordinates. Is there any way to turn the camera coordinates in keyframes into curve?
Sergey Kravchenko's user avatar
6 votes
0 answers
4k views

Mirror modifier with Bezier Curve

I am trying to mirror a bezier using the mirror modifier. I would like to then make the original and mirrored bezier join/merge as one continuous curve with one direction. I then want to continue ...
Edward's user avatar
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5 votes
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How to calculate bezier curve handles positions to reproduce a known curve?

The question in the title is too general, but this is the idea. For instance, if we look at a bezier circle, we can notice that the handle position is 0.55213 aside the control point. What is the ...
lemon's user avatar
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5 votes
1 answer
720 views

Getting NURBS in and out of Blender

Is there a working way to get NURBS curves into and out of Blender? FBX supports this, but when I import an FBX with NURBS, the curve is not created. I've tried with several versions. FBXes exported ...
CMK_blender's user avatar
5 votes
0 answers
316 views

Automated way to find the center line of a 2d mesh?

Given the simple 2d mesh pictured below, is there an automated way to create a curve or line that follows the middle of the mesh? I am able to do this manually with a bezier curve, but it would be ...
Geuis's user avatar
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What are possible options to flatten an object due to weight and viscousity, or fake it :)

I've modelled this kind of toothpaste piping. Trying out beziers etc. Now I'd like to make it look as if the matter is being squished a bit, via gravity or some other technique. The look I'm after is ...
Christo Steyn's user avatar
4 votes
1 answer
258 views

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 ...
Shiki Ryougi's user avatar
4 votes
0 answers
295 views

Why can't I move the control points in all 3 dimentions?

The movement of the control points on my bezier curve is restricted to X and Z, while I want them to move in the Y-axis too. Why is this so? Thank you. P.S. This was never an issue with other bezier ...
Meriil's user avatar
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4 votes
0 answers
86 views

How to retain speed on a "follow path" modifier even if the path is scaled up or down?

I've added "follow path" modifier to my armature and insterted keyframes so that the armature follows the path between 0-100 frames (the offset goes from 0.0 to 1.0). Everything looks fine ...
DoneForAiur's user avatar
4 votes
0 answers
321 views

How to split unconnected splines into separate Curve Objects without bpy.ops?

The following code separates unconnected splines into individual curve objects just fine (as far as I can tell). ...
Armored Wolf's user avatar
4 votes
0 answers
5k views

Where did the 'Use UV for Mapping' option go in Blender 2.8?

I'm following a tutorial using a 2.7 version of Blender, which shows how to use UV unwrapping on beveled curves to make a texture follow the shape of the curve (I'm making stylized hair and would love ...
Marten's user avatar
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4 votes
0 answers
95 views

Hook and curve transformation

I do not know English very well and write via Google translator, but I need your help. I need that bezier would retain its shape of a semicircle when I bind the last and the first vertex to different ...
ValeGoG's user avatar
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3 votes
0 answers
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Geometry nodes: is there a way to create a centerline of a closed curve/mesh?

See above image for a reference. For this kind of closed curve I would like to create a centerline. I have previously worked with an extension in Inkscape which creates a centerline but it is cutting ...
muckyu's user avatar
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0 answers
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Can Blender Bezier spline curves be G2 continuous?

Are Blender Bezier spline curves G2 continuous when the Handle Type is set to Automatic?
user299831's user avatar
3 votes
1 answer
163 views

Reverse engineering Bezier Curve

I am writing a script that involves creating bezier curves from poly curves. Is there any way to return the simplest bezier curve that can be made from a series of points? Basically I want to convert ...
Tyler Beaird's user avatar
3 votes
0 answers
164 views

Simple Railing follow a curve with sharp angles

it's a problem that i didn't never find a proper solution for. I'm trying to make a simple railing following a 3d curve. Simple as that. So the setup is the usual, object -> array -> curve. BUT. ...
TheMonx's user avatar
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3 votes
1 answer
3k views

Snap or project bezier curve to mesh surface

I've got a curve which follows the edges of a mesh. This curve is done manually, and I'd like to keep it this way. The mesh has no edge loops that I can use to duplicate them and separate them to be ...
Unapedra's user avatar
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3 votes
0 answers
287 views

How to round off corners using a curve circle

I have 2 objects in my scene. one semi circle which is from a mesh and I applied subsurface modifier and got round corners. The other object B is a curve circle, but is there a way it can have rounded ...
blender breath's user avatar
3 votes
1 answer
133 views

Control a cylinder mesh with multiple curves?

I want to control different parts of a cylinder with curves, so that different parts of the cylinder can have different intersections, controlled by curves, regardless of how the curves are scaled. I ...
Repeater Kyouko's user avatar
3 votes
0 answers
3k views

How to create this awesome transformation animations from manim python math animation library in blender?

It is the output of following python script ...
Navpreet Devpuri's user avatar
3 votes
0 answers
6k views

How to split Bezier Curves?

I'd like to split bezier curves at any point so that I get two separate curve objects (not just separated in edit mode), preferably while duplicating the split point as new ends so that I don't have ...
KT9000's user avatar
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3 votes
0 answers
49 views

Tank tracks seem to be not following the curve

The curve and array are applied properly but it seems it doesn't want to follow the curve but go straight. When I move the model it all rotates at the same time. I have tried tutorials but nothing ...
Muray The Developer's user avatar
3 votes
0 answers
414 views

How to achieve random distance, rotation between copies with array and curve modifier?

I'm doing a crown, and I put the thorns on the stem with an array and curve modifier. I'd like to have the thorns to have non uniform distance and rotation around the stem. How can this be achieved? ...
Robin21's user avatar
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3 votes
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60 views

How does one figure out how big to make an object to make it scale to fit a Curve Modifier perfectly?

Suppose I want to make a flat surface curved using the Curve Modifier; how do I do this so that the flat surface follows the curve from end-to-end exactly? I can hackily scale the flat surface along ...
Sphynx's user avatar
  • 31
3 votes
0 answers
1k views

Bezier curve seems to be locked from moving on certain axis

I am in 2.81 and created a bezier curve to act as a string in a scene. However, when I go to edit the curve, I grab the end point and attempt to move it on the x axis and it won't go that way. It will ...
Matt McKee's user avatar
3 votes
0 answers
177 views

How to animate ribbon unfurling?

I have to animate ribbon unfurling an box opening. Like below. Got the box part down, but I'm stuck on the ribbon. What would be the best way of going around it the ribbon. Would it be best done with ...
spockerrs's user avatar
  • 100
3 votes
1 answer
76 views

Beizer circle messes up model

I am new to using blender, and found something I wasn't able to solve. I have a simple model like this: With texture from the bottom: I would like to curve this model like a bracelet, did it with a ...
Kárpáti András's user avatar
3 votes
0 answers
107 views

Extracting 3-d forms for producing organic shaped model from various flat parts

I am a carpenter. Looking for a way to build organic shapes and curves in 3-d rendering that we can then extract 3-d pieces to understand the geometry required to build the form from multiple pieces ...
Gabriel Bass's user avatar
3 votes
0 answers
489 views

Curve extrusion without self intersection

In the attached image is a cactus made from extruding a curve profile along another curve. Notice the self intersections at areas of sharp curvature. In animation this might not be a problem but for ...
amoose136's user avatar
  • 199
3 votes
2 answers
1k views

Why does my camera start rotating randomly when following a path?

I have a camera that follows a bezier curve with a Follow Path constraint, with a Track To constraint that follows an object (named "Viewer") moving on another bezier curve with another Follow Path ...
Squirrel's user avatar
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3 votes
0 answers
1k views

Array/Curve: How do I fix array modifier overlap when combining "Fit Curve" Setting with a Curve modifier?

I am attempting to create an arena using the Archimesh addon and the curve modifier. I created a set of archways and columns with Archimesh, using the built in "create an array of elements" checkbox. ...
Nahotnoj's user avatar
  • 157
3 votes
0 answers
253 views

Path Curve Deform creates unprintable non-manifold geometry

I created an SVG vector mesh in illustrator, imported it to Blender and used it as a path to deform a triangle along. It makes a design that I rather like. Unfortunately when I convert that path to ...
Tim Belliveau 's user avatar
3 votes
0 answers
282 views

How to get one end of a path to fade out using Material node?

I'm trying to work out the best way to get one end of a path to fade out using a Material node, regardless of its axis, position or shape. Below is a screenshot of what I've tried and what I'm ...
miles's user avatar
  • 31
3 votes
0 answers
489 views

How to stop the influence of a curve modifier for part of a mesh after having animated along it?

I have a long thin constant width mesh (a bit like a long train, but it actually looks like a wall) that moves along a curve using the curve modifier. And when the mesh has reached the end of the ...
GOlaf's user avatar
  • 31
3 votes
1 answer
446 views

Curves and Booleans Woes

The Story I am attempting to make a 3d representation of the following SUPER complicated model in a 3d-printer(.stl) friendly way. (I know it's not great quality, but it's literally the best reference ...
RevoniK's user avatar
  • 31
2 votes
0 answers
46 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 ...
Juan Manuel Lynch's user avatar
2 votes
0 answers
89 views

How would I model Tsuka wrapping?

I'm trying to model a Tsuka wrapping and what I tried was to use a shrinkwrap so that my bezier curves get around a mesh I made. Problem is that when I'm using a shrinkwrap it flattens my custom ...
줄리앙Julien's user avatar
2 votes
1 answer
38 views

I need help with curve modelling

I'm modelling a decoration on a musical instrument (the reference photo in the background) and am out of ideas on how to fix a problem I ran into. I tried modelling the shape with curve - path option ...
user165964's user avatar
2 votes
0 answers
150 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 ...
Niilo Heinonen's user avatar
2 votes
0 answers
112 views

Controling Direction of Build Modifier on a Curve Object

I am wondering if there is a way to control the order that a build modifier builds a curve object. I'm aware that when applying a build modifier to a mesh, you can sort the faces of the mesh to tell ...
wgrenard's user avatar
  • 195
2 votes
0 answers
70 views

How do curve modifiers rotate a mesh around for deformation?

I have made a crude tree mesh and have created a bezier curve wrapped around the branch with the intention of animating a tapeworm like snake uncoiling from it. However, when applying the curve ...
ImSure's user avatar
  • 21
2 votes
0 answers
44 views

Is it possible to make a curve visible through bevel geometry?

I have a curve with a round bevel, like so: In the Viewport Display option, I have checked "In Front". I do get the normals in front, but what I expected was to see the actual curve spline ...
Savaric's user avatar
  • 128
2 votes
1 answer
255 views

Nurbs Curve length?

I know with the Bezier curve you are able to get the length of total length. Is it possible to get the length of a Nurbs curve?
Daniel Rahmani's user avatar
2 votes
0 answers
157 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 ...
Bits168's user avatar
  • 137
2 votes
1 answer
103 views

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 ...
Yousuf Chaudhry's user avatar
2 votes
1 answer
444 views

how to rotate a texture along a bezier curve

i have a bezier curve. i used geometry nodes to add an object as it's spline. then i created a material which has a wave texture. i was able to use a capture attribute and send that data to the ...
mark's user avatar
  • 21
2 votes
0 answers
50 views

How do I create points along the middle of a text character?

I want to automatically place objects along the center of some text, instead of along the edges. Before I can do this I need some points. The problem is how to avoid manually placing points in the ...
MegaRigid's user avatar
2 votes
2 answers
3k views

Apply Transform Curve to Mesh Geometry nodes

I'm running into several issues with bezier curves in Geometry Nodes. i have a node setup using a curve to distribute shingles along several pre-designated paths, they use the Euler of the curve to ...
Gahmuret Van Begonia's user avatar
2 votes
0 answers
242 views

Calculate the circumference of an irregular shape

I watched your video "100+ Tips to Boost Modeling in Blender", it's great, I couldn't pick it up. I am involved in a humanitarian association. I am an ortho-prosthetist and I make 3D ...
ROBERTO HPO's user avatar

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