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Questions tagged [splines]

The tag has no usage guidance.

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9 views

How to achieve automated followthrough with splines and constraints? (troubleshoot)

I'm creating a rig that involves the flapping of wings. The goal is to have the long finger/feathers act almost like a reverse IK constraint where the target is the root bone. I attempted this by ...
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23 views

extrude svg with no fill [duplicate]

I'm drawing splines in photoshop, exporting as AI, converting online to SVG and importing to blender to extrude and work on them. But they have no fill, so they won't extrude the way I usually extrude ...
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13 views

Create a curve from intersecting plane and mesh

I have the next problem. I need to create a curve from the intersection of this mesh (the slide) and the plane to make a path for a sphere to follow in an animation. Can you give me a guide on how to ...
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1answer
59 views

how to connect objects with splines with animation nodes?

I have a group of objects all with keyframed movement. I want to a create splines between the closest objects as they move like this... https://www.youtube.com/watch?v=k9MvcCXsHHY I know you can ...
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1answer
21 views

The bones connected to the Spline IK do not follow the whole armature - Still need help

Okay, so I have a mesh that has a tail so I googled how to rig the tail and it said to use a Spline IK restraint. I built the spline on the bones of the tail and now when I move the whole armature, ...
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1answer
49 views

Assign random color to spline list

I created a spline list following this guide. Now I want to assign a different color to each spline using Cycle's random node, but it doesn't work because the splines are grouped into one object. My ...
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0answers
25 views

Spline IK gets disabled on random frames (new depsgraph) / bone drivers get updated too late

I’m trying to get my Spline IK working. It’s behaving the way I want to, except for random frames where it looks like the Spline IK doesn’t get applied to the bone chain and the bones go back to their ...
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2answers
148 views

create gaps between spline points with animation nodes

Following this answer curve intersection with volume in animation nodes, I've managed to create a spline which i use to distribute objects inside a volume. Here is how: But I still need to avoid ...
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1answer
49 views

Sampling points of a nurbs surface using projections

I'm trying to sample a nurbs surface given certain constraints. Basically I'm trying to reproduce in 3D the following 2D situation. I don't know how to do this in 2D either so I need suggestions ...
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1answer
68 views

Modeling a car wheel arc: Move vertex to form an arc

I'm really noob with Blender and 3D modelling in general. I started modelling a *very* low polly car, and I wasn't careful at all about the topology, little by little I started adding some more detail ...
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1answer
39 views

Armature shifts between Pose mode and Edit mode

I'm using s Spline IK system to create the spine for a creature I'm making, but when I activated the Spline IK, some parts of the same seem to shrink or shift a bit. Which slitghly deforms my mesh a ...
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50 views

Problem with curve / spline modeling, scale factor

I'm trying to taper a tube-like (beveled curve) object using another curve. Should be simple ... But im always getting a strange 'scale factor' and I dont understand where it comes from. The 'Curve' ...
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1answer
73 views

Spline auto UV not working

I'm trying to add a simple repeating patter to an extruded spline by clicking "Use UV values as Generated Texture Coordinates" and also using "Generated" mapping in Cycles. Howeever nothing happens at ...
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2answers
79 views

How to get radius of a spline in animation nodes?

Similar to Is there a way to address the shrink / fatten / radius values of individual vertices on a curve with animation nodes? I've got one main spline that acts as a driver. This spline will have ...
2
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1answer
206 views

Rollercoaster Problem: Bones following Curve

I'm trying to make a train mesh follow a curve path. The Curve modifier does this admirably, unfortunately I need to export the animation to a game engine so a modifier just won't do. I tried adding ...
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2answers
267 views

Create one curve object per spline in Animation Nodes?

I am trying to create a scene where a list of spheres are positioned onto the verts of a hidden icosphere, and as I move an empty through the icosphere, the visibility of the balls is toggled, and ...
5
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1answer
391 views

Access hair child strands (animation nodes)

Animation nodes has a Hair Data node that allows you to get Splines from Particle Hair strands. However, it does not seem to output child hair strands. Is there any way to get the Child hair strands ...
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1answer
326 views

Animation Nodes: Merge spline points

I have been trying to use Animation nodes to create splines on certain edges, as can be seen in this question. It is working, but I am running into a problem: The splines that are generated by the ...
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1answer
294 views

How to delete bezier points from curve splines with low-level code

I'm trying to edit curves via python, but deleting bezier points is causing me trouble. I'm able to do it using high-level operators (see sample code below), but I would prefer edit the data more ...
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0answers
37 views

Normal spline line in blender

Good afternoon. Is it possible to create a plug-in for the blender to create normal spline lines, which are the same as those in 3d max?
3
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1answer
275 views

How to control object's path follow speed based on its position

I am trying to animate a rollercoaster. For now I have a cube following the Bezier path of the track. I need the cube to change its follow speed based on its height. (the higher it is, the slower it ...
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0answers
60 views

Interpolation bpy.types.Spline

Is there any bpy python function that I can use to interpolate over bpy.types.Spline ? Function with some 'factor of spline' argument and result in translation and quaternion
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1answer
47 views

How does this works? verts = [[float(i) for i in r[:3]] for r in rows]

I looked over here and found a csv reading script that creates curves, wich is exactly what I need, it´s cool, but I need to modify it because I need to read a differently formated csv, in fact I need ...
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0answers
374 views

Dependency cycle detected

Older user of 3ds Max, I am a new user of blender. A friend introduced me to your forum to ask my questions. I'm delighted to be here. On this moment, I'm trying to learn the rigging on blender and ...
2
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1answer
126 views

How to assign different colors to splines viewable in the viewport?

When importing a .dxf architectural drawing I get all lines drawn in a dark green color. (however they had been assigned unique colors in autocad) Is there an option to change the appearance of one ...
3
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1answer
346 views

How to do basic parametric modeling onto a spline

I'm looking for a way to do some basic parametric modeling in blender. I have 3 pieces i'd like to use as a base. 1 starting section, 1 middle and 1 ending. Is it possible to generate a combined ...
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0answers
38 views

“Baking” spline

I have downloaded a great model of a chainsaw. The author of this model seems to have created the "teeth" of the chainsaw with a spline, at least that's what it looks like to me. Here is a screenshot: ...
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1answer
351 views

Force redraw / update of curve object

I have written a script that syncs the position of a bezier curve handle to an empty via a handler (bpy.app.handlers.scene_update_post): ...
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1answer
40 views

Keeping track of splines in curve -> splines.get(), but what is the key?

I have a curve and want to check whether a spline already exists. As other data types, there is a get() method. But what is the key? Since splines.new() takes only one argument (the type), there ...