Questions tagged [fcurves]

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10 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 ...
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22 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 ...
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1answer
51 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 ...
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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 ...
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2answers
45 views

Copy all attributes to curve by Python?

the question is simple - how to copy all the attributes of the curve data to another curve object by python? I need to make it look the same - same cutom bevel, same extrude, same offset... same ...
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58 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/...
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1answer
24 views

Adding properties to bpy.types.Fcurve (monkey patching)

I'm trying to add a pointer property to the FCurve type, which has to point to a specific GPencilLayer type. So far, here's what i tried without success : i firstly tried to add a single attribute to ...
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9 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 ...
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1answer
38 views

Delete armature bone specific keyframe using python

I'm trying to delete a specific keyframe at a specific frame in an animation action, I've tried both fcurve.keyframe_points.remove(keyframe) and ...
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24 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 ...
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14 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 ...
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1answer
29 views

Mapping a textures z location from [0 to -40] to [0 - 1] for baking baking sound to f-curve

First off, I am not sure if I'm asking the right question. I'm a modeler first and foremost. Its all I know :) I make music visualizations. Normally, to bake a sound to a value, I press "i" ...
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1answer
34 views

Determine if fcurves cannot be evaluated from Python

I'm trying to detect fcurves that are "errors" (the ones with the red underlines): I've tried code like this: ...
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44 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 ...
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21 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 ...
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30 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 ?
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1answer
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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?
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1answer
32 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 ...
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2answers
27 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: ...
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49 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'...
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12 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 ...
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41 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 ...
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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: ...
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1answer
19 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 ...
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11 views

Is there a way to return what axis a keyframe point is associated with? [duplicate]

I have a very simple animation. I move the default cube from one location to another along the x axis. This gives me six keyframe points, the start and and stop locations of the x, y and z axes. ...
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1answer
18 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. ...
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17 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 ...
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7 views

Animation Curves not responding to Easing Type

I am trying to tweak camera movement, and while I could drag the handles, is there a way to automate this process? Anything similar to other programs, e.g. After Effects (fn+F9)? For me, when I click ...
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1answer
21 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-...
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1answer
42 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 ...
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28 views

How Do I Recursively Offset F-Curves Along a Bone Chain?

I am searching for more efficient ways to FK-animate long bone chains, such as for tails and snakes. One thing I like to do for wave-like motion is keyframe the rotation of the first bone, put it on a ...
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1answer
36 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
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27 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 ...
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2answers
41 views

No animation in Curves on using Bake sound to fcurves

In Blender2.9 , on adding location drivers to the origin of a Curve, there is no animation eventhough the location values are generated by baking sound to fcurves. ...
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1answer
114 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 ...
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31 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: ...
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1answer
101 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 ...
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33 views

How to make curved street with diffrent heights and an uturn?

Hello everybody. New here and at Blender. As you can guess in the picture, I try to create a road with an array and two curve modifiers. After the first elevated road curve, the road should be higher ...
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166 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 ...
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1answer
125 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 ...
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57 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 ...
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0answers
68 views

Can't keyframe shape key

I have made an animation using shape keys and the "Bake Sound to F-Curves" option and now when I try to keyframe the shape key I get this error: ...
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1answer
291 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 ...
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69 views

Shape key f-curve animation to action

I am trying to make a character talk without having to animate it by hand. I made a shape key and used the "Bake Sound to F-Curves" option to do this. The character talks just as I wanted ...
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1answer
89 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 ...
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1answer
922 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 ...
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8 views

Copy Restric Frame Range for F-curve modifier for multiple objects

I have 6 objects and I need to set a frame range for them and I do not want to repeat the range set for each object. There indeed is "copy to selected" when you right click (see the ...
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25 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 ...
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1answer
63 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. ...
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1answer
115 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 ...