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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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Displacement on single vertex inside of a mesh

I am currently trying to make individual joints (vertexes) on a human figure move based on an audio file. I've done this for objects in the past for nonspecific movement by using a displacement ...
Benvolio's user avatar
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212 views

Graph Editor & F-Curve Modifiers for Material animation

How does one access animation data in Materials in the Graph Editor, so as to better observe Interpolations and use F-Curve Modifiers ?
james_t's user avatar
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-1 votes
1 answer
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How do you find the y_axis of a pose bone in specific keyframes in a script?

How do you find the y_axis of a pose bone in specific keyframes in a script?
eitroo's user avatar
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1 answer
141 views

Continuation of existing curved edges to close mesh body

I’m totally new to blender; this may be a really obvious question! I just wondered if anybody can help. I created this mesh body I then smoothed the vertical edge vertices.This had the desired effect ...
Paul Callan's user avatar
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2 answers
157 views

Evaluate FCurve without keyframes won't work

i'm stuck here, i'm trying to evaluate a newly created FCurve to get the current value of associated property, and keep getting "0". Here's an example working code with scale: ...
tonton's user avatar
  • 211
1 vote
0 answers
77 views

Skeleton mirror breaks when applied

I downloaded the Unarmed Equip Torch 01 animation (skeleton only) from Mixamo and wanted to mirror it so the torch was in the right hand (and then I noticed you can mirror it right in the web, but let'...
JoePerkins's user avatar
1 vote
0 answers
406 views

how to display f-curves that are not showing

When i insert a keyframe to the emission strength of material "light_red" in image 1(yellow in the bottom right), a keyframe is added to the graph editor image 1: However when i add a ...
kiblykat's user avatar
  • 495
1 vote
1 answer
497 views

Is it possible to scale F-Curves linearly?

In the graph edutor, I press S then Y then 2. It doesn't multiply the x location of the key frames by 2. Instead, it multiplies every single key frame by a factor and I don't know what is this factor ...
user2824371's user avatar
2 votes
1 answer
567 views

"Make Cyclic F Modifier" is making my animation cycle go out of sync

I'm trying to make an infinite cycle of a swimming cycle but and am using an f curves cyclic modifier to make the cycle. The cycle works for the first few minutes but then slowly falls out of sync. ...
James T's user avatar
  • 31
0 votes
1 answer
186 views

How do you use an F-Curve with negative values?

I want to use the start to finish values of -1.7 -var = (driver value = 0) to -2.7 -var = (driver value = 1) I've always done it in the expression as a math formula but I never learned to use the F-...
Eric Huelin's user avatar
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2 votes
1 answer
703 views

I can't apply any modifier to my animation channel

This is blender 2.9. I'm trying to loop an animation using the cycles modifier but I can't add it to all axis, as you can see on the images below. It only worked for the z-axis, and it didn't work in ...
Thats._K2's user avatar
3 votes
1 answer
2k views

How to reset animation curves in graph editor

I changed up the curves in the graph editor however i would like to reset them back to automatic interpolation. I dont know how to do this and I cant seem to find a solid answer
Dan O'Reilly's user avatar
1 vote
0 answers
118 views

Creating a solid with one side as a low poly randomized surface

new to 3D modeling & Blender, hopefully I'm describing this in the correct way. I'd like to take an arbitrary shape (I've been playing around with curves, eventually want to import an svg that ...
MungoJerrrrrrrry's user avatar
1 vote
2 answers
229 views

No animation in Curves on using Bake sound to fcurves

In Blender 2.9, on adding location drivers to the origin of a Curve, there is no animation even though the location values are generated by baking sound to fcurves. ...
srt111's user avatar
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3 votes
2 answers
468 views

How to find out the exact Frequency of F-Curve Modifiers

I want to create harmonic looping animations using the built-in functions for F-Curve modifiers. Example: move an object back and forth along the z axis in a sine motion. In order to make a perfect ...
bstnhnsl's user avatar
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1 vote
0 answers
75 views

Accessing FCurve from context returning None

I'm trying to write a simple function that will select the keyframes in-between 2 frames and have got the following: ...
Paul's user avatar
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0 votes
1 answer
421 views

Populating Fcurves Keyframe_Points

I am currently working on an importer for captured Shape Key motions. To fasten up the process, I am using the method suggested here. It works perfectly and saves up to a few minutes per import. I am ...
f.bra's user avatar
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2 votes
1 answer
2k views

How to smooth out baked sound to f curves?

Ok, I have several scaling animations synced to audio via "Bake sound to f curves" and I've applied an envelope modifier to control the max value the curve can hit. The curve looks like this ...
blue's user avatar
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0 votes
1 answer
667 views

How can I delete the same animation/curve channel from all selected objects?

I'm trying to delete some specific channels from many objects. I select them but the dope sheet requires me to expand the Action and Transform menus from each object, then selecting each curve and ...
Ronan Paixão's user avatar
1 vote
0 answers
379 views

How to get evaluated driver value for certain frame?

I've already got an answer of how to get evaluated keyframed property value but this doesn't work for drivers in the same way. I've tried to get it with ...
Andrey Sokolov's user avatar
1 vote
1 answer
1k views

How do I curve an edge? Bevel not working!

can someone help me with curving an edge? I have a giant spiral and want to make it round instead of being made up of straight lines. Bevel does nothing so guessing there must be a way of selecting ...
Dan Abel's user avatar
3 votes
1 answer
248 views

Python. How to find a point on the timeline where Fcurve reaches a certain value without changing current subframe?

Is there any way to find out via Python at which point of the Timeline (at which subframe) fcurve reaches a certain value, without actually changing the current subframe? I have found out that it was ...
Andrey Sokolov's user avatar
2 votes
1 answer
4k views

How to change range of "bake sound to f curves"?

Alright, Im trying to modify the "damp" parameter of a particle system in accordance with the beats of an audio file. So far, I "insert keyframe" on the damp parameter, go to F ...
blue's user avatar
  • 1,287
0 votes
0 answers
35 views

Saving Fcurve to a file?

I've been using Blender to create a dataset for a machine vision problem. My current method is randomising the bone rotations of a hand for each frame (using Fcurves with the noise modifier), and ...
Idmi's user avatar
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0 votes
1 answer
158 views

How do you use the Curves modifier to make a smile or different shape?

I was following along with Blender Guru's video on how to make a Teddy Bear, and I got to the point where he is talking about how he made the mouth. He uses a Bezier Curve and a Screws Modifier. ...
noyou's user avatar
  • 57
3 votes
1 answer
449 views

Damp the movement of an animation curve

I am quite new to Blender. I am writing a script for a scientific study. So I want to do it in the script change the angles of a motion in order to have quantifiable data. I have been struggling for ...
Daki Withanage's user avatar
0 votes
0 answers
277 views

Blender moving f-curve Z location moves object diagonally instead of on the Z axis

This is what I have As you can see in my case when I move the Z location in the F- curve it moves it diagonally for some reason. I want to move it on the Z- axis. What am I doing wrong?
Motcho's user avatar
  • 195
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0 answers
34 views

How to Export this final product with Sound Animation to Unity?

Is there a way to export this animation into Unity, with all the material settings (especially the water droplets on the apple) AND movement intact from the "bake sound to f-curve" feature? Here was ...
sunsci's user avatar
  • 1
1 vote
1 answer
2k views

Keyframes won't appear in the Graph Editor window

I'm trying to make the light bulb, a sphere with an emission texture flicker, by using the Noise modifier using the F-Curve modifiers in the Graph Editor section. Now, I've split my layout into the 4 ...
Salmon's user avatar
  • 13
1 vote
1 answer
69 views

Effects of python script are not permanent

I created my first python script in blender, the purpose of which is to manipulate an animation. To be more precise, it loops over some F-curve and on some of its BEZIER segments, it changes the ...
Hagen von Eitzen's user avatar
1 vote
1 answer
720 views

Bake an fcurve with visual transforms

I want to duplicate an existing animation and bake it with visual transforms applied, something like what the default nla baker does. For simplicity's sake say I need to do this for a single bone. ...
user avatar
2 votes
1 answer
329 views

How to add a minimum value to f-curves

I want to make a plane change the scale to an audio signal. Now when I try using the bake sound to f-curve-function it obviously starts with the scale at the value 0. Is there a way to give it a ...
Validor's user avatar
  • 23
1 vote
3 answers
2k views

How do I Auto-Keyrame ONLY changed values?

Even with the "Only Insert Needed" Checked, keyframes are inserted on values that do not change. By hitting "g" and "z" to move along Z axis, I only change that value, but keys are placed on the ...
Narcissus's user avatar
0 votes
2 answers
2k views

BAKE SOUND TO F CURVE option MISSING in blender 2.82?

My option under KEY in the dope sheet is missing the option to bake sound to f curves. Tried it on several scaling options on several objects but the option is totally missing. Is there a trick to ...
wendigo's user avatar
  • 19
0 votes
1 answer
544 views

Selecting a curve by its name with a Python script

Is it possible with a Python script to select the curve of an object with its name ("location x", "location y", "rotation z", ....) instead of its number. For example, I tweak the Z location of an ...
JeanJouX's user avatar
  • 419
1 vote
2 answers
2k views

F-curve modifier not working

Tried to apply noise F-curve modifier on the power of a light but it isn't showing up on graph editor. Not sure what the problem could be.
Collin Chamberlain's user avatar
2 votes
1 answer
5k views

How to copy F-Curve Modifier(s) from one object to multiple objects in Blender 2.8x

I have an object that animates to float up and then starts slowly rocking in mid-air. I achieved this by using the Noise modifier for the different location/rotation values and it looks good, my ...
Lour's user avatar
  • 43
0 votes
1 answer
246 views

F-curves: Generating transformation matrix

I have written an exporter for blender to use with my games, including hierarchical object data and animation curves. So far, I have only had a need to work with a subset of animation channels - ...
Jamie's user avatar
  • 149
0 votes
1 answer
794 views

Light point power keyframes not showing up in graph editor

Title is self explanatory. Trying to simulate flickering light via light power keyframes but there are no points in the graph editor even though i can see them in the dopesheet, timeline etc. For ...
Collin Chamberlain's user avatar
0 votes
1 answer
1k views

Is it possible to make the f-curve noise modifier's scale into a variable?

Normally the scale value in the noise modifier is a constant. It cannot be animated. Is it possible to make the scale value decrease over time. Something like the picture below: Any idea or ...
covector's user avatar
  • 503
0 votes
1 answer
176 views

Return active FCurve with python

i'm trying to write a little addon to help deal with FCurves modifier, and i would need to get the active modifier from active FCurves. So far i'm not able to return active FCurve in python, i don't ...
tonton's user avatar
  • 211
2 votes
1 answer
452 views

How do I add an Fcurve Noise modifier with Python?

I am looking to add a Noise Modifier to a Node in the Compositor. I have added a keyframe to the Node but when I try and add the Noise Modifier, it's obviously not correct. I guess it's space_type ...
Darkfall's user avatar
  • 101
0 votes
2 answers
346 views

f-curve modifier to an object that has an object contraint (track to)

I am working on a scene with a car chase and I am struggling with adding noise (rotation) to a camera that is tracked to an empty via object constraint. I have one camera that is static and tracked ...
Lukáš Marek's user avatar
3 votes
1 answer
634 views

How can I create a snapshot of a curve in the Graph Editor (like Buffer Curve Snapshot feature in Maya)?

Maya has something called Buffer Curve Snapshot in its graph editor which allows to temporarily save a snapshot of a curve and then use it as reference when doing further changes to the curve. You can ...
user avatar
2 votes
1 answer
625 views

How to bake multiple sounds to f-curve to the same object

So im animating a characters mouth using shapekeys and baking them to an audio clip. I want to add three different audio clips to the same character's mouth using bake sound to f curve. But, when i ...
Helmut's user avatar
  • 21
0 votes
1 answer
936 views

How can I apply the same change to multiple channels in Graph Editor?

I'm a beginner and learning with a video course in Blender Cloud. I would like to apply the same modification to two channels such as the X Scale and Z Scale in one action in the Graph Editor. In the ...
Hiroji's user avatar
  • 3
1 vote
1 answer
128 views

Rotate two points on f-curve by opposite amounts

If I have two points on a curve and I want to rotate the handles the same amount I can select both handles, choose pivot from individual centers and rotate them. However what if I want to rotate them ...
user avatar
2 votes
4 answers
6k views

Add F-Curve Modifier for multiple F-Curves at once?

I have a rigged and animated character with over 100 bones. Don't ask why, but I want to add the "Noise" F-Curve Modifier for the rotation and scale channels (F-Curves) of every single one of these ...
StillerMauritz's user avatar
1 vote
1 answer
324 views

Decimate f-curves using python

In blender 2.82 I want to decimate all the f-curves in active action, how can I override the context to make the script work with Animation Nodes Script Node? ...
Denis's user avatar
  • 13.1k
3 votes
1 answer
9k views

Remove F-Curve Modifier from all selected keys in Graph Editor

I added an F-Curve Modifier (Shift Ctrl M) to all selected Curves to repeat the animation. Now I want to remove this F-Curve Modifier from all the selected Curves/Keys. Is it possible to remove the F-...
Bram van Vliet's user avatar