Questions tagged [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.

281 questions with no upvoted or accepted answers
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8
votes
2answers
686 views

Make path move like snake in snake game

In my game I have a Nurbs curve in the XY plane. I have a rigged car, that has a follow path constraint, so that it follows this curve. I would like to make the ...
7
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1answer
136 views

Animate Curve along mesh surface

i am trying to find a way to aproach, animating a curve along a mesh surface, like having a wire creating a mesh. I thought about having a curve snapped along the mesh and then animate the wires. Do ...
6
votes
1answer
165 views

Branching and swirling mesh on a ring

I need help constructing this ring. I thought it would be simpler, but the splitting and recombining of curves that swirl in variously symmetrical ways make the intricacy a little more difficult than ...
5
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0answers
702 views

Setting bouncing curve in graph editor

Is it possible to modify the bouncing and elatic curves in the graph editor ? For example, modifying the number of bounces, the amplitude, ... ?
4
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0answers
204 views

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 ...
4
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0answers
607 views

texture map to a beveled curve or path

I've been trying to map beveled curve properly. It look stretched out of the box: Converting it to mesh, marking seams and unwrap looks nasty. Trick with using curve modifier on another curve works, ...
3
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0answers
42 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? ...
3
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1answer
48 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 ...
3
votes
1answer
105 views

How to make curve apply its bevel radius after all deformations

I have a wicker basket which is made up of curves. The object has a couple of array modifiers, a simple deform and a cast modifier to achieve its final shape. It looks fine from afar but upon closer ...
3
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0answers
78 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 ...
3
votes
1answer
792 views

How to get a straight Nurbs

I have added a nurbs curve. Im extruding it in the L direction and i do not need that curve shape. On the red axis its going straight but when i turn to green axis it makes a curve. With the orange ...
3
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0answers
138 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 ...
3
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0answers
138 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 ...
3
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0answers
328 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 ...
3
votes
1answer
252 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 ...
2
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0answers
23 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 ...
2
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0answers
28 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 ...
2
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0answers
28 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 ...
2
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0answers
88 views

The Rotation Axes are Messed Up!

I'm in a hurry because I have a client waiting on me for this project, but I've run into an issue with rigging my character. By the way, instead of attaching the curve controls to the joints, I've ...
2
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0answers
32 views

Making a bezier curve sway/swing with anchor points at both ends

Edit: I'm a beginner to Blender I'm trying to make a bridge sway from side to side with both the ends of the bezier curve staying in place while the middle moves from side to side. Currently, a ...
2
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0answers
224 views

Curve a Straight Line?

Is there a way to "curve" a straight line? In AutoCAD it was a very simple process. I cannot though find a way to just take a straight line in Blender 2.8 and make it curved between the two vertices?...
2
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0answers
71 views

Making a Moire pattern animation

I'm trying to animate a pattern I made. I made this on a graphing website called Desmos, but ran into problems making all the lines move. Apparently it's too computationally difficult for the website ...
2
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0answers
136 views

make a liposome

I'm trying to build a liposome like this: I made a single unit like this and used the duplication method described here How to create a sphere with different ring vertex count by scripting? The ...
2
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0answers
96 views

The second emitter does not emit particles in the correct way

I'm trying to create a traffic simulation using the blender particle systems with different model of cars. The enviroment consists of a two-lane road. I want the cars crossing the two lanes in ...
2
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0answers
114 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 ...
2
votes
3answers
185 views

Rotate along curve, using a empty?

I´m trying to rotate an array of objects along a curve, using a empty object in the middle that can be rotated. Using a curve-modifier I'm able to rotate the objects as the green arrows show. But I ...
2
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0answers
48 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 ...
2
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0answers
375 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?
2
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0answers
16 views

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 ...
2
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0answers
36 views

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 ...
2
votes
1answer
247 views

Deform a complex pattern along a 3d path, maintaining vertical

I am trying to create a patterned railing for a curved staircase, like this: Except that in my case, the staircase does not have a constant curve. This is a straight segment of the railing I am using:...
2
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0answers
180 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 ...
2
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0answers
211 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 ...
2
votes
0answers
289 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 ...
2
votes
0answers
159 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 ...
2
votes
0answers
88 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 ...
2
votes
0answers
520 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. ...
2
votes
0answers
103 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 ...
2
votes
0answers
166 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 ...
2
votes
0answers
120 views

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 ...
2
votes
0answers
138 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 ...
2
votes
0answers
189 views

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 ...
2
votes
0answers
233 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 ...
2
votes
0answers
322 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 ...
2
votes
0answers
175 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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vote
0answers
37 views

How to convert to Mesh from Curve with Python

I'm making a bunch of abstract objects that are shaped programmatically. I use a Bezier curve, you get nice molds with few points. Then I need to convert it into a mesh object. Blender version is 2.80....
1
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0answers
15 views

Distributed objects python script

I'm trying to distribute objects along a curve as an add-on in a modal operator like in this link. I did it for a line an it works ok. The problem comes when I want to evaluate a curve with different ...
1
vote
0answers
8 views

'NoneType' has no attribute 'bezier_points', when BezierCurve selected

With the following code, I can export a bezier curve to a file, and with the default bezier curve it works, but as once i add points to it and attempt to run the script it gives an Attribute error. ...
1
vote
0answers
47 views

Array + Curve modifier deformation in blender 2.81

In blender 2.81 the array + curve technique does not work as expected i've got a hedge with an array modifier and a curve modifier, to make it follow the path i want. It is working just fine in 2.80, ...
1
vote
0answers
39 views

How to animate object hanging from a string?

I'd like to animate this model so it acts like its attached to a car mirror, with proper physics of course (swinging, and rotating enough to see both sides). I'd also like the top of the string to ...