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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Blender hair problem: Cycles viewport rendering is different from final render

I'm having a weird problem where the hair at the tips of my mesh look like they're exploding. I have no idea why this is or why it only shows up in the render. I also have some strands that are darker ...
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163 views

Stretch or extend curves dynamically based on mesh translation (or rotation)

I recently started using Blender for a project involving multiple cables (or ropes) connected to the same object. Let's say, for instance, this is my set-up: - two cylinders containing a rolled-up ...
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76 views

Is there a way to tilt all points on a curve torwards the center of the world?

I'm modelling a street around a planet with an increasingly complex Terrain. I used the Shrinkwrap modifier in the beginning which worked well as long as my planet was just a sphere. By adding more ...
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1k views

How to Get a Smooth Curve?

I have created a long cylinder with lots of loop cuts: When I apply this to a curve, the result is still very 'chunky': My curve modifier is like this: Is there a way to get a smoother curve?
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How do I use the curve modifier to make an object connects from one end to the other accurately?

So I am trying to curve this somewhat 3D flat plained object into an accurately divided cylindrical object. But whenever I tried to scale the BezierCircle up with an increment, it would always be off ...
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Using two different mesh with curve/array modifiers in one nurbs curve?

I am trying to create a road network with different meshes. What I want to do is to change the mesh of those inside the red box in the image below to a different mesh(like bridge). Any ideas how to ...
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301 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 ...
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332 views

A Soft body (Nurbs Circle curve) collides with a Plane but doesn't do it with Cube & other objects

The case is this: A soft body (Nurbs Circle curve) falls on the floor and on one more object. The floor is a Plane mesh, the object is a Cube mesh. Collision physics is enabled for both. The soft ...
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1answer
246 views

Radius is different even though mean radius is the same on beveled curve

The scale and mean radius on this beveled curve are all set to 1 yet the radius on that one vertex is is smaller than every other radius. How do I fix this and make them the same radius?
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252 views

Animate curve's bevel factor (preserve the order)

My object contains some separate curves and when I am trying to animate bevel factor, they act simultaneously. But I want them to respect vertices' order (X axis from left to right). Can it be done ...
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351 views

How to bake a curve animation

I'm trying to animate a curve with hooks. And I want to upload the curve to Sketchfab but it doesn't supports curves it gives errors on the model, so I want to bake the animation to a mesh madded by ...
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174 views

Bezier Curve TILT exporting

I am currently in the process of creating a rollercoaster outside of Blender, but I am using Blender to build a path for my coaster. I currently made my Bezier Curve along my imported Coaster. I ...
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103 views

Particles not piling up at end of curve

I have a particle system following a curve and hitting a collision plane at the end. The particles are supposed to pile up at the end of the curve, simulating sand blowing in the wind, however they ...
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110 views

Let text follow animated beziercurve

I have created a 3D bezier curve. In order to animate that bezier curve I have added hooked the curve with empties (ctrl+h used: https://blender.stackexchange.com/a/21234 ) Now I have selected my ...
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199 views

Get curve under mouse position

I need to select some mesh or curve from a modal operator. I can do it with mesh by using the template "Raycast View Operator" but not for the curve because they haven't got faces and the raycast ...
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How to make a camera exactly follow a path?

I have a path of 6 DOF camera poses. Say my path has 100 frames, so I have a 6x100 matrix. Now in blender, I want my camera to follow exactly that path. I have seen tutorials about creating a path ...
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146 views

Extrusion along a path-keep y-orientation of profile

I want to extrude a modified curve along a spiral path, which still works fine, but I want my profile oriented upright up to the end of the stairs. Right now it tilts - as expected because of the ...
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How can I get an entire 2D Bezier Curve Object to accurately curve over a bezier curve modifier?

I am trying to take a glasses object that I created with a 2D Bezier curve and then bend them over a bezier curve via object modifier to make them the actual shape of the of the glasses rather than a ...
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296 views

Creating/Handling pathfinding large world waypoints in Blender

I am trying to create an importer/exporter script for an open world's game map. However, I am being constantly hit and set back by performance of blender. I want to be able to create way points for ...
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353 views

Movement of array along curve in BGE

I am new with Game Engine, and I have a problem with something similar to bike chain. During simple animation, I used array modifier to duplicate those single chain elements, and then I used curve ...
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180 views

My arrayed object is not following the curve I've assigned to it using the Curve Modifier

I know there's probably been a million questions like this one, but can somebody help me sort this out? I'm making a zipper with the array modifier and trying to get it to follow a Curve I've assigned ...
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1answer
40 views

creating a hanging hose with soft body

I want to make a hanging hose similar to this image. I have been spending a day to find a way to archive a real rolled up hose effect. Please help guys first I made the holder (not similar to the ...
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0answers
24 views

Mesh inverts its normals along a curve

I have added a mesh to follow a curve modifier. As seen in the screenshot, the normals are correct when starting to follow the curve, and when it exits the curve, the normals are flipped. What is ...
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1answer
24 views

Adding a modifier array along a curve is providing inconsistent results

I am using Blender 2.93.3 (on Mac OS 11.5.1) and am running into some odd behaviors. The goal is to have Dominos collapse and spell a word. The first image shows the capital "r" and it is ...
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40 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 ...
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40 views

Is it possible to manipulate the normals of the curve?

Using the curve and object bevel on it, I got the approximate shape of the object i need. But to get exactly the form that I need, I had to convert the curve into a mesh and change the form in edit ...
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24 views

How do you manipulate both the START and END of an instanced point distribute in geometry nodes?

I am essentially trying to create something like this, where the fibers have a centrally located starting point, and all radiate outward to the periphery of the object. Preferably these instanced ...
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29 views

Is there a way to turn this strut/Spring into a Nurbs Curve?

I have a spring that I want to convert into curve (Nurbs Curve specifically) Is there a way to turn the mesh into a curve without having to trace it out. This mesh is way to decimated so clitic links ...
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1answer
27 views

Curve loses animation data when converted to mesh

I have a curve simply animated in my scene. I have converted the curve to a mesh and once I do that, the mesh doesn't have any of the original curve's animation data applied to it (although the mesh ...
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41 views

Object Bevel on Curve twists around curve when moving any curve point

I'm working on using curves to make hair. The curves have a profile bevel which is a shape I've created from another curve. When I move the points around, however, the orientation of that bevel ...
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1answer
28 views

Follow path object goes to infinity and wont stop

I have been struggling for the past 2 hours to make an object follow a path. The problem is that the object doesn't stop at the end of the curve (doesn't matter if I use path or Bezier) it just goes ...
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22 views

Curve modifier acting funky

I want this object to follow this curve. On all the other meshes and curves, the curve modifier worked fine, but on this one, this happens. I've set the objects and the curves origin to the same ...
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Is there a way to edit the animation curve in the graph editor for all axis at the same time?

Is there a way to edit the animation curve in the graph editor for all axis at the same time? I want to create a custom curve for moving from point A to point B, but I do not want to make this custom ...
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23 views

wave + curve modifier

i have setted the movement of the butterfly with a wave modifier, but when I try to make the butterfly move along a path with a curve modifier it messes its form and the direction of the wave. I want ...
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22 views

Edge Slide or divide Curve section into unequal cuts?

I know I can subdivide between two curve vertices to get a new vertex exactly in the middle of them, but is there a way to either create a control point NOT right in the middle from the get-go (e.g. ...
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19 views

How do I make a curve with multiple parts, all connected parametrically?

I'm looking to model the nozzle for a rocket engine in Blender to use in an animation, and I want to be as accurate as I can. This means using math (and a lot of it) to make the model. My problem is, ...
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21 views

These drivers are identical according to the UI. Why does the scripted one not work?

I have put a driver on the tilt attribute of a bezier curve, and linked it to a hook manually first to see if it would work. The result of this is as follows: And here you can see that the bezier ...
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0answers
13 views

Apply softbody result to CURVE

When one wants to 'save' the result of a softbody simulation, they apply the softbody modifier either directly to the mesh or as a shapekey. I am trying to perform this on a curve (simulating a string)...
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When i add a hook modifier to a 2d filled bezier circle the fill dissapears

When i add a hook modifier to a 2d filled bezier circle the fill dissapears. Im trying to use it to anaimate a crude mouth. Help please!
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16 views

Loop through a collection of bezierCircle [Python]

I have this code: ...
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1answer
47 views

Using a custom shape as bevel object

I discover blender and python API for blender. I would like to create celtics works with blender using python (for cnc works). I found a way to create a sine curve and use a Bezier circle as the ...
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0answers
28 views

Orientation of an object using two curve modifiers

I have a Plane with a Box attached that I want to bend with a Curve Modifier. The Plane is zeroed on location and rotation. In order to see the affect I'm moving the Plane to 20mm on the X-axis. That ...
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0answers
55 views

Hide instance (original) light while keeping the instanced versions

I've created a lightchain. For that lightchain I need a point light at every "bulb", as an emitting material is too weak of a lightsource. To achieve this I have created an array of planes ...
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33 views

Import 3D curves without affecting their curvature

I have created a series of curves in Rhino. I also have a joined version of them. Obviously, the curvature of each individual curve matches its corresponding section on the joined curve as shown below:...
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29 views

Array modifier and merge distance for curve

I want to do some knitting on cloth mesh and need to array knit curve,connect points and finally add bevel depth.But there is no merge by distance for curve and array modifier can't apply to curve. ...
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0answers
24 views

Jagged and pixelated edges from bezier taper on bezier bevel (Realistic lightning?)

I was trying to create a realistic lightning but if I use a taper bezier to curve the outer edges of the lightning bezier with a bevel, the edges get really pixelated and jagged. Also the mesh gets ...
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1answer
39 views

How to animate cvt belt as pulleys change size

I was trying to make this cvt belt animation but can't figure it out how to make increase or decrease belt size animation I have tried curves but doesn't work. Any body can recommend how I can I do a ...
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0answers
35 views

Why does my Curve turn black? (only happens without bpy.ops)

I'm creating a curve without bpy.ops but the previously created curve turns black for some reason. Toggling in and out of Edit Mode fixes the issue but that seems kinda silly. EDIT: I reported this ...
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40 views

Distortion in array curve modifier

So I used Array + Curve modifier on the silver pole (to a bezier curve) But as you can see the ones in the corner are distorted badly. How can I get rid of this deformatiom??
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78 views

subdivide curve with python

Is there an accurate way to subdivide a Curve without using a lot of math? I would like to subdivide the spline and then make it noisy. ...

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