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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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Is there a way to make baking sound to F-curves more accurate?

At the moment I've got a script that generates a bunch of bars, and bakes a narrow range of frequencies to each bar's Z scale. It ends up being a pretty simple spectrogram that I composite onto the ...
Burritosaur's user avatar
3 votes
0 answers
649 views

Finding a specific fcurve!

I am trying to develop an addon that involves placing a keyframe on a specific fcurve (like for example the X Location) and then making changes to the coordinates of the handles of that keyframe (as ...
InsigMath's user avatar
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Generate a f-curve from another one

How can I generate a f-curve from the upper and lower points of another f-curve? (check out the image as example, I want to generate the green f-curve from the red f-curve) Thank you :)
level 1 rock's user avatar
2 votes
0 answers
100 views

Selection Event for F-Curve in Graph Editor

I'm trying to catch an event when an F-Curve is selected in my add-on. I've added a handler to bpy.app.handlers.depsgraph_update_post where I'm iterating through bpy.context.view_layer.depsgraph....
Dr. Pontchartrain's user avatar
2 votes
1 answer
116 views

How do I move a camera using just part of an exponential interpolation curve?

I have a model of a room containing a 1/10th scale model, containing at 1/100th scale model, containing a 1/1000th scale model. I move the camera from a start position - looking in through the window ...
Stuart Leask's user avatar
2 votes
0 answers
511 views

How to use the Envelope F-Curve Modifier in Blender 2.93

I would think that defining a range of a minimum and maximum of f-curve values would take only 2 variables: your minimum and a maximum and that should be enough to scale the f-curves so that they are ...
Nigelino's user avatar
2 votes
0 answers
159 views

cannot add driver for fcurve noise values

I am not able to add any driver to this noise-modifier values. Ok, i can accept that it is that way. But until now nearly every value i could "drive" with drivers. Is there a special reason ...
Chris's user avatar
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2 votes
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752 views

Efficiently creating noise in animations

Organic animation in Blender looks a lot more convincing when everything has a bit of jitter to it. I'm trying to find an efficient, clean way to do this. F-Curve modifiers are the obvious solution, ...
chemicalcrux's user avatar
2 votes
0 answers
312 views

Is it possible to get fcurves associated to a bone by script ?

I'm working on a Blender add-on for transfering animation. I'd like to know if there's a way to select the fcurves describing a bone's movement through the bone. What I mean is that the only way to ...
Mounsif Mehdi's user avatar
2 votes
0 answers
252 views

How to restrict frame range for multiple F-curves at once?

I have lots of f-curves(~100) cycle modifier applied to and I want to restrict same frame range for all of them simultaneously. is it possible to make it? coz I feel pain to restrict same frame range ...
NSaunders's user avatar
2 votes
0 answers
318 views

Why does undo select all channels in graph editor?

I select any channel (with only show selected option or\and with show only selected curve keyframes option on) then modify keyframes on f-curve, then press CtrlZ for undo and all channels become ...
Stan von Zarovich's user avatar
2 votes
0 answers
163 views

Facial tracking

I've been playing around with facial tracking. Placing markers on my face, then tracking it in blender. Once I hit "Link Empty to track" It creates the markers and they follow my facial movement. Each ...
Eternity Tomorrow's user avatar
2 votes
0 answers
78 views

Armature transform matrix

I have a question about how to place bones in a right position. Let's say I have 3 bones root, mid, and last. And root is a parent of mid, mid is a parent of last, and last is the very end. As I know ...
Jaewon Lee's user avatar
2 votes
0 answers
1k views

How do I smooth out an f-curve?

So maybe it´s a dumb question to the more experienced users, but I´m a noob at animating, so I tried to make a Basic intro(basically a world where there is a simple camera movement to the text which ...
Martin W.'s user avatar
2 votes
0 answers
1k views

Modifying FCurve values on armature bones via python

I have this script, which does what i need with object actions. ...
BlenderTard's user avatar
2 votes
0 answers
183 views

Tracking one strip, to another?

I've got one of my Video strips in the Video editor fully 3D-tracked by motion tracking. I wanted to add another video strip on top of it, following the track and being stabilized in the movie. How do ...
Justin Koenig's user avatar
2 votes
0 answers
55 views

Addon executes only after left click on window

I have written a script that interpolates the beginning and end keyframes of an animation intended to be cyclic in response to my own question here. The addon executes just fine, but only after ...
Tanatarca's user avatar
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0 answers
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Is there any way to manipulate the curves with numbers?

Is there any way to control the curves created for the animation in the graph editor in Blender with numbers? For example the “cubic-bezier” function in CSS or the TCB interpolation setting in ...
gfytrbbbaa's user avatar
1 vote
1 answer
45 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
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1 vote
0 answers
54 views

How to make these particles flow along this curve object?

this is my first post here I'm kinda a newbie therefore pardon my ignorance. So there is this curve object I've imported as a svg file. I want to create some particles to flow along it. Since now I've ...
M. Reha ERMETİN's user avatar
1 vote
0 answers
84 views

How do you loop a path animation?

I am trying to loop an animation using the F-Curve Modifier. So far, it works for objects that have keyframe data, however, it does not work on the curve object that controls the animation of other ...
Adrian . EXE's user avatar
1 vote
0 answers
59 views

How to add shape keys with two different audio

I am trying to add shape keys to mouth of my character with audio file. But when I try to add second audio to the same character, the shape keys aren't working. I also added "bake audio to F ...
Equinox's user avatar
  • 11
1 vote
0 answers
109 views

Mirroring an animation accurately without creating extra keyframes

Lots of questions about the same thing but they can be solved by simply pasting the pose x-flipped or by mirroring the keyframes in the Fcurve editor. However, for an animation that crosses the global ...
Rodeo's user avatar
  • 11
1 vote
0 answers
137 views

How can I bake sound to f-curve but use pitch instead of volume?

I am doing a blender project to music and I have animated it to change with the music using the bake sound to f-curve function, but I need it to change using the pitch as the variable, instead of the ...
minwom's user avatar
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0 answers
40 views

Where to find Fcurve's 'enable modifiers' (wrench) attribute with python

As i'm working with custom fcurves in the Dopesheet, i wanted to use that little wrench icon to control something. It was easy to find fcurve[0].lock and ...
Tomreggae's user avatar
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1 vote
0 answers
180 views

Issues with F-Curve to bake sound frequency?

I am trying to bake the sound with some force field empty and a sphere, making them react to certain frequencies, following the tutorial posted in this link: http://barneyisbo.blogspot.com/2013/11/...
MATH ASKER's user avatar
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
410 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
0 answers
119 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
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
  • 11
1 vote
0 answers
381 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
0 answers
155 views

Fluid Obstacle while animated by modifier

I'm new to 3D animation, and was trying out Blender. I've come across an issue that I'm not sure how to fix. I wanted to try throwing fluid onto a subdivided plane, whose vertex's are being moved by ...
Newb's user avatar
  • 11
1 vote
0 answers
49 views

Noise distribution used by F-Curve Modifier

What is the distribution used by Blender to generate the random noise patterns in the F-Curve Modifier?
vadersup's user avatar
1 vote
0 answers
582 views

I’m looking for some new ideas to make a full talking character

let’s say that I want to create something like this : https://www.youtube.com/watch?v=4qE72InFJrM this can be done easily with crazy talk animator,but we like to use blender,right ? let’s say also ...
Marietto's user avatar
  • 1,377
1 vote
0 answers
57 views

Write bone transform from fcurve animation data

I am trying to write an animation exporter and facing issue to write animation bone curve from fcurve data. And the animation looks stretched and not correct at all. Down here is the code to compute ...
Jaewon Lee's user avatar
1 vote
1 answer
106 views

Load animations into custom engine

for learning purpose of 3d animation, I picked blender to study. So far I've exported .blend to .lua file that contains mesh data, bones, and animation data. My animation data is fcurve arrays based ...
Jaewon Lee's user avatar
1 vote
0 answers
419 views

How to maintain interpolation when keyframing F-curve?

Inserting keyframe ruins Bezier interpolation. There is an option Sample keyframes, but it inserts keyframe for every frame - this is too much for me. How to do it without additional handwork? Top to ...
Serge L's user avatar
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1 vote
0 answers
2k views

How to make Noise modifier on f-curve loop?

I am trying to make a looping animation. I am animating the camera movement using the noise modifier of an f-curve. I would like my start keyframe and end+1 keyframe to be the same so that the ...
roob's user avatar
  • 111
1 vote
0 answers
72 views

How do I duplicate an action and change the F-curves?

I'm trying to write a script that duplicates an action. Ultimately I'm going to be generating an entirely new set of F-curves and key-frames but I thought simply removing all F-curves and re-entering ...
user1445709's user avatar
1 vote
0 answers
433 views

Looping F-Curve Modifier?

I was wondering if there is a way to exploit the F-Curve Modifiers to create a seamless loop from a Noise modifier further up the stack. What I would imagine it would do is behave kind of like the ...
florian's user avatar
  • 11
1 vote
0 answers
57 views

Tie an animated tail flap to Z position change

I have created a (frighteningly realistic) swim cycle for an object, and then added a path. The object follows the path using a constraint: as it swims along the path, the tail flaps. I then added ...
rcgauer's user avatar
  • 2,247
0 votes
0 answers
22 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
35 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
0 votes
0 answers
40 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
42 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
34 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
35 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