Questions tagged [fcurves]

The tag has no usage guidance.

74 questions with no upvoted or accepted answers
Filter by
Sorted by
Tagged with
11
votes
1answer
327 views

Set Active FCurve in Graph Editor through python

I'm trying to set an FCurve in the Graph Editor to "Active" through python. In the API FCurves don't actually have an "Active" property, but manually click-selecting a channel or keyframe on an ...
5
votes
1answer
774 views

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 ...
3
votes
1answer
1k 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-...
3
votes
1answer
625 views

How to edit xyz F-Curves at once?

Is there a way to edit/move multiple f-curves (xyz) at once? I am editing a Cube and got it to scale up. To get a feel for the right timing, I'd like to edit all xyz f-curves at once during playback. ...
3
votes
0answers
49 views

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 :)
2
votes
0answers
423 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, ...
2
votes
0answers
141 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 ...
2
votes
0answers
168 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 ...
2
votes
0answers
178 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 ...
2
votes
0answers
146 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 ...
2
votes
0answers
58 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 ...
2
votes
0answers
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 ...
2
votes
0answers
847 views

Modifying FCurve values on armature bones via python

I have this script, which does what i need with object actions. ...
2
votes
0answers
411 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 ...
2
votes
0answers
161 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 ...
2
votes
0answers
47 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 ...
1
vote
0answers
27 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 ...
1
vote
0answers
54 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 ...
1
vote
0answers
22 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 ...
1
vote
0answers
65 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/...
1
vote
0answers
12 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 ...
1
vote
0answers
50 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'...
1
vote
0answers
55 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 ...
1
vote
0answers
35 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 ...
1
vote
0answers
84 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 ...
1
vote
0answers
105 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 ...
1
vote
0answers
44 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?
1
vote
0answers
495 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 ...
1
vote
0answers
49 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 ...
1
vote
1answer
85 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 ...
1
vote
0answers
340 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 ...
1
vote
0answers
1k 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 ...
1
vote
0answers
67 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 ...
1
vote
0answers
314 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 ...
1
vote
0answers
51 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 ...
0
votes
0answers
15 views

F-Curves and mirrored keyframes

The image above is the x-rotation of two bones in a walk animation that should be mirrors of eachother. The animation is 120 frames long - each foot walk cycle is 60 frames. As you can see, the bezier ...
0
votes
1answer
25 views

Bevel object doesn't work

could someone help me with the following issue? As you can see by the screenshot above I can't extrude the path using the selected profile. Both the items are curves and I have applied Rotation&...
0
votes
0answers
25 views

Problem while running Fcurve smoothing from terminal

I am facing a problem when trying to run my script for Fcurve smoothing form terminal. I have read that some operations are not supported when running Blender in the background. Moreover, ...
0
votes
0answers
10 views

Apply specific function as modifier on f-curve

I am a complete beginner in Blender and 3-D Modelling in general. Currently I am trying to understand f-curves and what you can do with them, because I mainly want to create Audio Responsive ...
0
votes
0answers
16 views

Scripting f-curves

I'm trying to write a python script to programmatically assign location and rotation values to keyframes based on a csv file that I am ingesting and parsing. When I hardcode in the frame number and ...
0
votes
0answers
13 views

How to get a key or data of a vertex of a curve using a ray cast?

I have curves where 2 or more curves share the same position and i I want to know those keys or identified of every point with a raycast, but ray cast just works with meshes, do u know how to use ...
0
votes
1answer
62 views

Two origin points for simple deform

I want to bend a beam keeping the endpoints rooted on the x-axis but curving upward on z-axis. I tried to set two origin points on each end of the beam but was unsuccessful. Is there an alternative ...
0
votes
0answers
37 views

Re-align imported animation keyframes to blender frames

I've imported a motion capture armature from an fbx file, the problem is whenever I check the action number of keyframes for any fcurve they are much more than I expected from previewing the action ...
0
votes
0answers
22 views

Ceil or floor keyframe's time with blender API with python

I would like to ceil or floor all the key frames of an object in a manner that happens when you drag and drop them slightly in the Blender UI. Example images of what I mean: Then I drag and drop the ...
0
votes
0answers
45 views

Curve looking weird, maybe missing vertex?

I'm pretty new to blender, just learning. I followed tutorial for a chair and everything was going well up to this point, when one of my curves is really bad.. I don't know what I messed up and don't ...
0
votes
0answers
22 views

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 ...
0
votes
0answers
45 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 ?
0
votes
0answers
14 views

graph editor: how to insert a key at frame along f-curve

I can't find the magic to insert a new key along an existing f-curve, using 3d-viewport, graph, dope or timeline. The only insert that works is "Selected Channel at cursor", but this ...
0
votes
0answers
13 views

How to show scaling keyframes that are not appearing when adjusting f-curves?

I am animating the camera movement for my scene. The scaling option for some of my keyframes do not appear on-click when adjusting f-curves in the graph editor. The problem is depicted below: Image 1: ...
0
votes
0answers
18 views

How do I check if a F-curve is baked and therefore locked for future keyframe insertion?

I'm currently developing and add-on in which I'm finally baking the keyframes to a desired f-curve. Once baked I can't insert new keyframes into that f-curve as it gets locked when baked. Is there a ...