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Questions tagged [splines]

The tag has no usage guidance.

1
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1answer
32 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
13 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
102 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 ...
1
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1answer
34 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 ...
0
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1answer
50 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 ...
0
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1answer
25 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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0answers
42 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' ...
0
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1answer
48 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 ...
2
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2answers
66 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
167 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 ...
1
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2answers
221 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 ...
4
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1answer
327 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 ...
1
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1answer
280 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 ...
4
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1answer
240 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 ...
0
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0answers
31 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
237 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
52 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
0
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1answer
44 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 ...
3
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0answers
324 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
78 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
votes
1answer
292 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 ...
0
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0answers
36 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: ...
1
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1answer
325 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): ...
0
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1answer
39 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 ...