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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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How to model an object to follow a curve/path

I am wondering how to extrude the highlighted object to make it follow the black path towards the ground? I have tried using bezier curves and an array and that doesnt give me the result I want. I ...
Cameron Fong's user avatar
3 votes
1 answer
111 views

How do I maintain Bezier circle resolution when selecting fill mode "none" for processing with Geometry Nodes?

I have some (2D) Bezier circles (with resolution > 1) that I am transforming into nice smooth objects with a GeoNode stack: Fillet Curve (poly, as Bezier creates a ton more vertices and ruins the ...
Sabrina's user avatar
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-1 votes
0 answers
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Help keyframing jet doing a stall roll [closed]

I am trying to keyframe a jet to do this maneuver but at the peak it goes backwards down the curve rather than forwards, I could just trial and error with key frame positions but there has to be an ...
SaloKing's user avatar
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14 views

How can I turn an Object LineArt into a Poly Curve?

I am really new to bpy and I wrote this script: ...
Psyduck Fan's user avatar
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How to do Curve material texture, Geometry node to make imported svg look better? [duplicate]

I am import a world map SVG and want to make line between countries clear (it look like it merge when look from top), how can I highlight the outline ? with geometry node, or material shader Another ...
Nguyễn Nhật Anh's user avatar
0 votes
2 answers
30 views

Extrude curve look wrong

I import world map.svg to my file. Then when I try to extrude it, it only extrude the line on the edge. I try convert to mesh, do it in edit mode, use geometry node and it still the same
Nguyễn Nhật Anh's user avatar
1 vote
0 answers
32 views

Why does camera shake when parented to animated circle curve?

I'm trying to animate a camera orbiting a sphere. Everything works great except the camera appears to shake when moving around the sphere and I can't figure out why. The camera is parented to an ...
WilburPost's user avatar
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Making a fan duct

Trying to design my own fan duct for my 3D printer, and I followed this guide and got a pretty decent result. It basically works the way I want it to, except for that I want to be able to narrow down ...
CptShadows's user avatar
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1 answer
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Correct use of Merge by Distance in Geometry Nodes, with smooth joining sites

I´d like to effectively merge two curves at their ends in Blender's Geometry Nodes without creating angles at the joining sites, while maintaining the smoothness of both curves. I wonder what is the ...
Carlos M's user avatar
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0 answers
20 views

Ray_casting from curve origins doesn't hit any part of the mesh

The terminal prints none, which I guess means the raycast is not hitting anything. To replicate this output. Run the script and navigate to its sidebar in the viewport, select the two nerve curves and ...
Stavros Piliaris's user avatar
1 vote
1 answer
21 views

How can I create a loop with a pathcurve set as a bevel for an archemedian curve object?

I want to create a loop like the picture below. I made the basic shape with an archemedian curve. I read on another post (Trying to make a plane follow a bezier curve) that it is possible to use ...
DPlayground's user avatar
3 votes
1 answer
474 views

Is it possible to animate a curve along it's own path?

For instance if I want to animate a tube going along a path. So typically, if you want to animate an item going along a curve, you can just create a curve, create you item, then use the curve modifier ...
Default_dx's user avatar
0 votes
1 answer
38 views

Volume Clouds failed to show up even after I set Its Geometry Nodes right

I really don't understand what's wrong here I followed this tutorial from Blender itself and every node setup that I built followed that Blender make, but I get different result compare to it. Here is ...
Earvin Williams's user avatar
2 votes
1 answer
149 views

Is there a way to snap Bézier curve handles to axes or angles?

I want to have Bézier curve handles align at 0 or 90 degrees which is the same as aligning them to the X or Z axes in my case. Is there a way to do this in Blender?
J S's user avatar
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0 answers
34 views

Delay trim curve animation using geometry nodes

I try to delay the trim curve animation of each plant instances but it doesn't work as you can see in the attached blend file. On the left a grid with a bezier curve scattered. It works but doesnt ...
ant0's user avatar
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0 answers
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Array and Curve modifier difficulty [duplicate]

I'm trying to make stitching for this shoe. I'm using the array and curve modifiers to try and do so but I am not able to get it to work. As you can see in the picture I've gotten the other ...
blenderbeginner's user avatar
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0 answers
64 views

What is The Best way to trace image to carve inside geometry nodes

I tried several ways to trace image inside geometry nodes , I knew that I can trace image with grease pencil , but I need a way to update image coordinate instantly inside GeoNodes , my result came ...
Wissam Mo'athen's user avatar
4 votes
1 answer
419 views

How to create a galvanized pipe with a twist?

How to create a twisted pipe like in the picture below? I've tried using curves, bezier, point and circle but no luck. Perhaps I am just doing it incorrectly.
AjBlender's user avatar
1 vote
1 answer
19 views

How do I get out of active object mode?

I don't think it's actually called active object mode, illustrator just kind of does the same thing and that's what it's called. I was working on a single curve in my scene, then accidentally hit ...
blenderbeginner's user avatar
1 vote
1 answer
61 views

Geometry Nodes grow a premade branching curve in parallel

There is a branching curve made manually. With geometry nodes, how can it grow so that every time it splits, the growth is continuing parallel? The arrows show the desired growing direction.
hypotenuse's user avatar
0 votes
0 answers
43 views

Project Curve on Mesh - Geometry Nodes

I'm using geometry nodes to project an open curve on a mesh that is not flat. I have used raycast node but can't project the curve along normals (like a polygonal object). I have tried connecting the ...
Abdullah Al Sarfaraz Md Yeasee's user avatar
0 votes
3 answers
41 views

Gouging a constant-depth path in variable-height terrain

I have a large model (38M tris) of terrain (from LiDAR scans). I will soon have a series of 1D paths, geolocated points representing detailed lat/lon gps coordinates along walking trails. These ...
Phrogz's user avatar
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4 votes
1 answer
370 views

Is it possible to convert a Bézier curve to a NURBS curve while preserving the curve?

I'm interested in converting Bézier paths to their matching NURBS counterparts. I know how to change a curve's spline type from Bézier to NURBS, but that is not what I mean by this question as that ...
J S's user avatar
  • 65
1 vote
1 answer
41 views

how to use geometric nodes to deform geometry instances with curves?

I followed this tutorial, but ran into a problem creating instances. What I want to do: I want the geometry nodes to create instances of the object I place as a reference and deform it along curves. ...
AquaMan's user avatar
  • 11
1 vote
0 answers
23 views

How to make separate curves to have the same tangent on their points

I have individual Bezier curves that are needed to create the road. There are meshes of different lengths - these are sections of the road that can have different curvature of turns and elevation ...
Chase81's user avatar
  • 11
2 votes
2 answers
199 views

Merge Curves via Geometry Nodes

I'm trying to create speech bubbles using Geometry Nodes, allowing for different shaped tails and positions of the tail. I can't figure out a method to join the curves in a smooth way such that the ...
Black Fox's user avatar
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0 votes
1 answer
67 views

Can not select endspoints on curve (sapling tree)

I generated a tree using sapling tree gen i would like to use geometry nodes to select endpoints of each branches to scatter a flower animation growth there. when i plug the endpoint selection node to ...
ant0's user avatar
  • 39
0 votes
1 answer
50 views

I am trying to measure the curve length with geometry nodes, the curve has all transformations applied and scaled 1:1. The length is incorrect

Here is the geometry node method screenshot, the curve length should be at least 800mm, but the number shows as 14.66mm.
Neusial's user avatar
2 votes
2 answers
87 views

Cleaning up overlapping geometry from Skin Modifier

A client wants me to prepare a 3D model of a city's street network for 3D printing. She provided an Illustrator file with lines, which I exported as a dxf and imported into Blender. The thickness ...
TomTr's user avatar
  • 493
0 votes
1 answer
45 views

Using Curve ID to drive Random Value Node for Instances

I've instanced a Curve Circle at the end of two splines, which are part of the same geometry. I'd like to assign a random number between 0 to 5 to the Resample Curve count, before it's instanced at ...
Gano711's user avatar
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1 vote
0 answers
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Conical pulley system

I've been trying for days different ways to make the rope in this pulley work, but using a curve modifier to go around the cone doesn't make the right effect since the rope is supposed to be attached ...
Joaquin's user avatar
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2 votes
0 answers
18 views

How to implement 2 f-curves: 1 for camera position and 1 for speed?

I'm trying to have 2 curves: - 1 for the spline that the camera will follow - 1 for the speed of the camera How it currently works: At each frame n, I evaluate the 1st curve for n, and the camera's ...
kyopa's user avatar
  • 133
2 votes
1 answer
57 views

Mesh objects in array modifier not evenly spaced when adding a curve modifier?

I'm trying to make an ammo belt using an array on a curve. When the belt is in a straight path, it looks good to me, but when it curves on top, the distance between the bullets is longer than it ...
Davi Escorsin's user avatar
0 votes
1 answer
51 views

Modify a segment of a spiral with geometry nodes

I need to deform o modify a segment of a spiral curve with geometry nodes: to turn the last loop into a closed circle. ¿Is it possible?
Carlos M's user avatar
0 votes
1 answer
41 views

Help Understanding Curve Anchor Points

I am trying to bend an Array Object along a Curve (using a Curve Modifier) that starts at the same 0,0,0 location as the object. But the Curve Modifier changes the Location and Rotation of the first ...
Glen Candle's user avatar
  • 1,819
2 votes
1 answer
57 views

Text along curve or circle with Geometry Nodes

I'm trying to align text along a circle or curve using Geometry Nodes, but it's very messy. Where did I go wrong? (Blender v 4.1.0)
arachnoden's user avatar
  • 1,349
0 votes
0 answers
11 views

Bridging two edge loops creates weird effect in smooth shading [duplicate]

I created a bezier curve and converted it into a mesh so I can bridge it's edge loop with the edge loop of another object. Before I bridges the loops I joined both objects. I deleted any faces between ...
Devyn Kyng's user avatar
1 vote
1 answer
23 views

Place different objects on curve with exponential space between

Hello everyone, how can i place all these different(!) objects to the curve, with using empty as a space, rotation and location controller between them, but exponential increments or decrements. As it ...
Duar Rat's user avatar
0 votes
0 answers
19 views

How to add new controlpoints to a curve at a specific time?

If I have a curve, how could I add a new controlpoint at the location in 3D space at time t on the curve? I've tried looking at the docs, and they don't seem to provide a way to evaluate a bezier ...
kyopa's user avatar
  • 133
0 votes
0 answers
12 views

How to let player determine path through a tunnel at runtime?

I'm trying to create a game/animation where the player is traveling in an infinite tunnel and they have control over where the tunnel goes next. Imagine you were in a subway train's driver cab and you ...
kyopa's user avatar
  • 133
0 votes
0 answers
16 views

Abstract ribbon

I'm trying to model an abstract ribbon like this. I can extrude it as a flat face with a Bezier, but I'd also like the thickness - thicker and flat on the bottom so that it can lay flat, and coming to ...
Stokes's user avatar
  • 1
0 votes
0 answers
26 views

How to stabilise the Curves info random value?

I am using the SouthernShotty's workflow and node tree to get hair that has different colour on individual hairs. He uses Random output of the Curves info node for this step, which works. However when ...
PoTioN's user avatar
  • 1
1 vote
2 answers
43 views

how to apply tilt to a path?

I have this path: and i want to move the last vertex, to make a little curve, but this happens: how can i apply a tilt, like in ctrl + A changing the "twist method" to "z-up" ...
Gustavo Salaroli Oliveira's user avatar
2 votes
1 answer
110 views

Bevel Or Smooth - Sliced Sphere

I am trying to re-create a car lens. Have Sliced into a Sphere and 2 Cylinders to create the object - and want the sliced edges to blend as smoothly as possible without showing the creases. As the ...
Wix wixy's user avatar
1 vote
0 answers
55 views

how to set normal curves (free control) and transfer for mesh

i would like to make a stadium but have some problem with setting normals here's what I got with geo node: And this is how I want to control the angle I would be very grateful if someone could tell ...
Dan's user avatar
  • 11
2 votes
1 answer
56 views

Deform a flat object/wire on the surface of an irregular object

I modeled this sort of wire outline - that was a bezier curve that I added depth to - that's on top of the bulb-shaped object, and I want to make it be on the surface of the bulb as if you drew it on ...
snowice's user avatar
  • 23
0 votes
0 answers
24 views

Why is blender crashing with this code line: bpy.ops.gpencil.convert(type='CURVE', use_timing_data=context.scene.transfer_gp_timing_data_toggle)

I selected a grease pencil scribble that wasn't too complex, and the convert tab grease pencil to mesh works very fast on my computer. Blender crashes when executing this line: curve_obj = bpy.ops....
Stavros Piliaris's user avatar
0 votes
0 answers
64 views

How to make a reversal of sample curve node

I have a vector (XYZ coordinates from the hit position of a ray-cast node) that is more or less on it, but not perfectly (because for the raycast i had to use curve to mesh). I need to get the factor (...
Its_Gerryz's user avatar
0 votes
1 answer
22 views

Add Bevel to curves when using a solidify modifier for thickness on a imported .svg logo

I have an imported logo .svg file that is in curves. I have eliminated the top faces by using Fill mode: Back. I now want to add thickness inside the logo itself, so I have used a solidify modifier. ...
N03's user avatar
  • 485
3 votes
1 answer
121 views

Remove top Faces still using curves, is it possible?

I have a logo in .svg format that I imported into Blender. I've extruded the text upwards. However, I would like to know if it's possible to remove the top face of the logo. Is this doable while ...
N03's user avatar
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