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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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:
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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 ...
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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?
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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 ...
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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 ...
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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 ...
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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.
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#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, ...
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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 ...
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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 ...
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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 ...
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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 ...
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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 ...
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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.
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F-curves aren't showing for half the animation
So I'm making an audio visualizer in blender. For the first half of the animation, there are no f-curves, even though in the audio file there is music. I've checked to make sure there are no modifiers,...
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Graph editor, handle lengths are extremely long. Is there a easy way to fix that?
In graph editor, key handles are too long or too short. It creates bad curves. I adjust them manually and it takes so much time. Is there another way to do that. And is it normal to have such handles, ...
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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 ...
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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 ...
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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 ...
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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 ...
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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 ...
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Using Bake Sound to F-Curves, with added rotation
Is it possible to add a value (say +10 degrees rotation) on a beat? I have the beat on a single track separate from the whole audio track. Currently, as the curve returns to zero as the audio ...
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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,...
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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 ...
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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 ...
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Shape Key Driver for closing eye isn't working well
I made closing eyes shape keys (only Eyelashes this time) and tried to make a Driver for Open/Close Eyes.
I set the Driver but Shape Key's value doesn't follow the controller's movement. It's sticking ...
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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 ...
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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 ...
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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 ...
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Replacing curves between two bones with modifications
I have been working in Blender for 10 years, but I only started learning Python recently :)
I'm trying to replace manual work with a script, namely the following:
Select animation curves for one bone,...
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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 ...
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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.
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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 ...
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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 ...
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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. ...
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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
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Can you invert a noise modifier
I just want the waves made by the noise modifier to be flipped on the x-axis
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409
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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.
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What is the equation of an F Curve?
My goal is to graph an F curve on an external program.
I've read that an F curve is a bezier curve, but when I plug in values using a start and end keyframe and their handles into a cubic bezier curve,...
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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 ...
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Graph editor showing errors
My graph editor is showing some channels marked as red, and I can't understand why.
Removing the keyframes for these channels will end up in changes on the animation, so I don't think the error is ...
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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 ...
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animation_data.action.fcurves.new(data_path='pose.bones["Leg"].rotation_euler', index = 2)
obj.animation_data.action.fcurves.new(data_path='pose.bones["Leg"].rotation_euler', index = 2)
data_path is treat as string rather than rotation_euler.
...
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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 ...
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Blender bevel curves
I am trying to bevel a curve by selecting it in orange, but only one section will apply the bevel modifier,
I am using Blender 3.0
Any help would be greatly appreciated.
Thanks,
UPDATE
Here's the ...
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Issue with Bake Sound to F Curves
Please help. Can’t find an answer anywhere. I’m baking the sound to f-curves to make this plant jump to music. The stem, flower, and pot each have their own shape keys which are each getting baked to ...
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Curve material mapping [closed]
How can I mix/blend two different materials along the curve?
and then instance this curve to geometry.
Thanks, guys
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Graph Editor F-curve noise modifier for cameras is completely flat in 3.2 - doesn't show bezier handles - how do I show them?
I just updated from blender 3.1 to blender 3.2.
In blender 3.2, I added a keyframe to a camera, then added an f-curve modifier. Normally, it looks like the picture on the bottom once I change the ...
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how to deselect one keyframe every nth on a multiple objects selection?
I selected multiple keyframes on the Dope Sheet > summary (multiple objects then).
I'd like to deselect one keyframe every two (selected, not-selected, selected, ...), like a true-false in the list ...
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Offset an animation fcurve in python?
I want to offset an entire range of keyframes (all) in an individual animation fcurve using python. Is there an operator or function that will do this without needing to iterate through the keyframes ...
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