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Questions tagged [fcurves]

F-curves are curves that show the changes in value over time of animated properties. Use this tag for questions about creating and modifying F-curves.

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Editing the f-curve of the object 'freezes' it's animation

File in question I'm making a viewmodel animation, but everytime i try to edit the f-curve of the rifle, the animation doesn't play anymore, it freezes on the current frame and scrolling through the ...
505A606's user avatar
1 vote
1 answer
35 views

Why does only one Hook Modifier work when I have two F-curves manipulating different points on a cloth string in Blender?

I'm attempting to create a loose waveform effect on a piece of string (cloth) in Blender to simulate drum vibrations. I've applied three Hook Modifiers along the string's length and baked their Z-...
Euansounds's user avatar
1 vote
1 answer
14 views

Automating F-Curve changes in Blender/Python to Match Song

I have a visualizer in Blender that can visualize songs. While I can change the songs using a script, I'm struggling to adjust the visualizer's f-curves to match the dynamics of the new songs. This ...
Deniz Böttcher's user avatar
0 votes
1 answer
31 views

Sound to samples not working

Inserted a keyframe in Shape Keys Key 1 Value (Relative checked). Graph editor:Clicked sound to samples, downloaded audio. f-curve shows up. Play animation,nothing happens. Please help. Thank you
Roberto Collins Lazo L's user avatar
0 votes
0 answers
21 views

I want to make an audio visualizer that accumulates the input from a f-curve data rather than vacillates between values. How can I accomplish this?

The specific effect I'm going for is a noise texture on an object to move a little bit farther each time a sound is played from an audio file. Essentially I want it to accumulate the values from the f-...
Jesse Beauchamp's user avatar
0 votes
0 answers
31 views

Baked audio to fcurve>fcurve through a driver to animate a hook empty to deform geometry>works great... BUT

I've asked this question a couple of times in a couple of places and it's driving me crazy. I've baked drum beat to the x location fcurve channel of an icosphere so that it bumps to the positive x and ...
James Dunbar's user avatar
0 votes
0 answers
37 views

How can i animate "swing"synced to music?

I'm animating with audio baked to f-curves and applying that translation data to an empty hook object using basic drivers to deform geometry. Easy enough to make the "hips" bump to one ...
James Dunbar's user avatar
0 votes
0 answers
9 views

Lagging the f-curve

I have a line with 5 points in an animation. I also have a f curve. The Z of the first point on the curve is tied to the f curve. I would like to tie the second point's z-axis to the f curve but with ...
Tommie Jones's user avatar
0 votes
0 answers
32 views

How do I make a Seamless Run Cycle?

I have a character using a rig from Mixamo (but not a Mixamo motion). I'm trying to set up a run cycle. The first and last frames are in the same pose when the character's foot makes contact with the ...
BrianG's user avatar
  • 53
1 vote
1 answer
46 views

img to mesh in blender?

I have to create 3d text(mesh) from this image in blender, in order to create and 3d print a sign: But how can I convert the text in the image into a curve/mesh?
Dario Gallo's user avatar
0 votes
0 answers
37 views

How to Copy to Selected for F-curve modifiers

I added the F-curve modifiers to all of the channels (location, rotation, scale). I want to fix the value and Copy To Selected to all other channels. But it seems impossible. I can't even delete all ...
Iampoor's user avatar
  • 49
0 votes
1 answer
40 views

Character in need to steer his boat properly!

I have a character on top of his boat, the boat has noise mod on its F curves rotation axis. Character is Rigged and parented to boat and holding steering wheel. Character itself has a bit of noise on ...
emablender's user avatar
0 votes
0 answers
33 views

After v2.79, F-Curve handles no longer import from DAE files (including later versions)

I'm writing animations to DAE. I would like to write Bezier curves with user defined handles/control points. Seems this is unsupported after Blender v2.79, or there is a new feature which is ...
Brad Battley's user avatar
0 votes
0 answers
32 views

How to apply envelope modifier to F-curve in Blender 4.0?

How to apply envelope modifier to F-curve in Blender 4.0? Has it been moved somewhere else?
user7865458's user avatar
0 votes
0 answers
18 views

Increase Curve Circle resolution with the amount of instance [duplicate]

I have the following setup here. It use a mesh line, converted in to instance, to create a ring of curve circle. I want the circle resolution of the outer circle to have more resolution than the inner ...
Binh's user avatar
  • 1
1 vote
1 answer
59 views

Performing math operation on fcurve

I'm completely new to Blender and I'm currently in the process of analysing if this software is better suited than the one I'm currently using for my workflow. I'm currently using After Effect to ...
Eledwin's user avatar
  • 11
0 votes
1 answer
54 views

Importing the height of a Waveform as geometry

i'm currently creating an audio visualizer animation and i'd really like to have the waveform sitting in the background in the form of columns that represent the shape of the actual waveform of the ...
Horyzon's user avatar
  • 23
1 vote
1 answer
50 views

How to add a driver to a shape key and modify the fcurves through Blender python?

My question is how do I reference a the fcurve modifier on a shape key driver in Python? I have the following code at the moment: ...
John Smith's user avatar
0 votes
1 answer
187 views

Baking sound to F-curve in keyframe produces no results

I want to animate a shader node from a sound file (showing an open or closed mouth if the sound crosses a threshold). I follow the suggestions here, here and here, but the graph editor shows nothing ...
emonigma's user avatar
0 votes
1 answer
4k views

Where is Bake sound to F-curve in 4.0?

It`s not grey out, I litterally cant see it. I was looking in Key and Channel tab, and theres no sound option. Did they move it again somewhere or got rid of it?
Audio_Video_Enthusiast's user avatar
2 votes
2 answers
72 views

Morph curve into line?

I have a Curve object that has a complex shape and is very curved. The vertices are all lined up one after another. Is there a way I can force those vertices into a straight line with an arbitrary ...
Adalex3's user avatar
  • 165
0 votes
1 answer
80 views

How to make baked sound f-curve trigger a layer's visibility?

I want to animate a picture of a puppet with two images, one with a closed mouth and one with an open mouth. I want to trigger the open mouth when an audio track goes above a certain volume. This ...
emonigma's user avatar
0 votes
0 answers
69 views

When I convert my Hair system into mesh, It has no tris only curves. How can I turn curves into tris?

I am beginner. And I designed a character in Blender using new Hair system but When I export it as Fbx/Obj, Its hair doesnt show up in unreal or in Mixamo. And I cant see it on 3d viewer apps. I tried ...
Sinan Cagrı Kurt's user avatar
0 votes
2 answers
88 views

How to scale fcurves of armature & all actions/animations using python?

First of all, excuse me as I'm not really a programmer, so probably this is a super easy question... I'm trying to scale the location of fcurves to 0.01 of both my current Armature and all my Actions. ...
Ashley L's user avatar
1 vote
1 answer
38 views

#frame driver is not uniform/linear

I am using #frame to drive the Y-coordinate of my Voronoi texture in Blender. However, the resulting animation is not linear, ...
Lochend's user avatar
  • 11
2 votes
2 answers
532 views

Only Selected Curves Keyframes option gone in 3.6?

There used to be an option in Blender 3.3 and under to make it, so only the selected curves have selectable keyframes. But this options seems to be gone now from the graph editor. Does anyone know ...
YellowJoker Kev's user avatar
1 vote
1 answer
279 views

Geometry Nodes: How can I use baked sound F-curve data as a math function?

I want to use baked sound F-curve instead of sin and cos in expression for Trefoil knot: \begin{aligned}x&=\sin t+2\sin 2t\\y&=\cos t-2\cos 2t\\z&=-\sin 3t\end{aligned} Is it possible to ...
Pavel Trufanov's user avatar
0 votes
1 answer
144 views

Animation - Graph Editor : how can I get my channels back for the selected object only?

I am having a very weird issue with my graph editor. It is probably super stupid but I can't figure it out. The channel list that normally appears on the left part of the graph editor window does not ...
ColorDodge's user avatar
0 votes
1 answer
505 views

How do I remove all F-Curve modifiers in the Blender graph editor?

I need to clear all the F-Curve modifiers in Blender. I currently have the "Stepped interpolation" on every channel in the graph editor. I need a way to remove them all without going through ...
JDEVS's user avatar
  • 3
1 vote
0 answers
14 views

How can I access fcurves for elements that are not objects? [duplicate]

I'm able to access and manipulate individual keyframes (interpolation, handle length, etc) on a normal object's translation/rotation/scale fcurves by storing the fcurve data in this variable, and then ...
sakeferret's user avatar
0 votes
1 answer
56 views

Geometry Nodes - Partially filled curve

Do you know a way to fill a user-specified part of a curve that is part of one object? I have included it in the screenshot below, hope it will be understandable. Thanks for the suggestions.
Zyzio's user avatar
  • 195
1 vote
1 answer
27 views

Return active FCurve with python ( blender 3.4.1 )

I would like to get the selected channel in python. But I Don't find the right function to do it. or maybe it's the way I select the channel with the mouse in the graph editor ? I tried based on this ...
Charles K's user avatar
0 votes
0 answers
21 views

How do I change the intensity of f-curves (sound bakes to f-curves)

I'm making an audio visualizer with Blender, but my visualizer is all over the place and way to intense. I added the Envelope modifier, but it is still too intense. How can I make the f curves softer ...
Clucks's user avatar
  • 1
1 vote
2 answers
46 views

Hide F-Curve Channel in Dope Sheet via Python

I am baking a lot of keyframes in the strip time parameter of NLA strips. As it's 1 keyframe per blender frame, the keyframe counts end up in the sheer thousands with multiple strips. Is there any ...
Ryth Azhur's user avatar
1 vote
1 answer
78 views

How do I take the integral of an F-Curve in the graph editor?

So I have an F-Curve (Bezier Curve) made of frame-by-frame keyframes, which I'm viewing in the graph editor. I need to make another F-Curve that is the integral of this one. Is this possible in ...
Ebchopra's user avatar
0 votes
1 answer
33 views

Is it possible to batch-export fcurves of specific animations?

I am attempting to make what is in effect a "sound sculpture". I am using the Bizualizer addon, and after baking the fcurves, want to export them so that they can be processed to be used in ...
untoldunteller's user avatar
0 votes
1 answer
721 views

How do I continue motion past keyframe, automatically?

I knew how to do this once but for the life of me I can't remember: I have an object that on frame 1 has a keyframe, and on frame 12 has another keyframe (let's call it a translation from 0,0,0 to 10,...
Glen Candle's user avatar
  • 1,867
0 votes
0 answers
430 views

Interactive motion paths in Blender - do they exist?

In After Effects, you can affect the curve of a motion path without inserting any extra keys: Linear, straight motion path Same keys, same speed - but now the null will follow a curve I know Blender ...
Nickh129's user avatar
0 votes
0 answers
53 views

How to Interpret FCurve Keyframe Handles

I've been pulling my hair out over this concept for a couple of days now, and I can't find a satisfying answer online. I want to take each Keyframe in an ...
Hexadecimation's user avatar
0 votes
1 answer
72 views

Live Keyframing

Does anybody know if there is a good way to "record keyframes live?". For example - I want to hit the space bar while the playhead is moving to time a parameter manually instead of tediously ...
TWheeler's user avatar
0 votes
0 answers
57 views

Possible to show Driver (scripted expression) output per frame like the graph editor does for "keyframed" parameters?

I would like to show the output of an expression and be able to see the plotted graph values of frames in the same way one can in the graph editor. It seems the Drivers panel will only visualize the ...
TWheeler's user avatar
1 vote
1 answer
1k views

How to bake animation of non-transformation properties with curve-modifiers applied?

I have a point light source whose power has been animated with a noise curve-modifier to have a flickering effect. I want to cycle its animation over 12 frames. For transformation properties like ...
jais's user avatar
  • 155
3 votes
1 answer
95 views

How to clean linear f-curves to keep only peaks/valleys

How to clean f-curves that have linear lines so that the only keyframes that are kept after the cleanse are the peaks and lowest keyframes where the curve's slope changes. What I have tried: The ...
Leo Aguiar's user avatar
0 votes
0 answers
142 views

How to bake sound to an existing fcurve at key frame in Blender headless mode?

I try to bake a sound to fcurve in headless mode. I wrote some code which is quite close to. ...
Stephan Ahlf's user avatar
0 votes
1 answer
304 views

How can I reference the f-curves of a bone in Python?

I'm trying to automate calibration of mocap data, matching it to rig bone locations. As part of this project, I need to use Python to scan bone animation f-curves for minimum and maximum values. I ...
Thailandian's user avatar
0 votes
1 answer
163 views

How can I use Python to automate setting bones to be driven by empties?

I have about 30 control bones of a rig that I want to animate using mocap tracker empties. I will be doing this many times for many models and each time, I need to set and calibrate the drivers for ...
Thailandian's user avatar
1 vote
1 answer
323 views

In the Drivers Editor f-curve, can I prevent keys from snapping to integer keyframes?

I am using the Drivers Editor in my motion capture pipeline. I have already recorded a trial video using facial markers, tracked the markers and converted the constraints on the empties to f-curves. ...
Thailandian's user avatar
0 votes
0 answers
101 views

random change of position or scale in the collection using geometry nodes

I have candles arranged in three curves and I need to be able to make an animation of the appearance by position or scale randomly for each candle
PUXIII's user avatar
  • 3
1 vote
1 answer
93 views

Can you invert a noise modifier

I just want the waves made by the noise modifier to be flipped on the x-axis
Oboyobo's user avatar
  • 61
4 votes
1 answer
679 views

Filling and extruding a curve

How can I extrude a curve without converting it to a mesh? I want to do this so I can animate the spline while it's extruded.
kariomart's user avatar
  • 243

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