Questions tagged [fcurves]

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63 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 - ...
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9 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 ...
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1answer
25 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 ...
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1answer
20 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 ...
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1answer
27 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 ...
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1answer
10 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 ...
3
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1answer
49 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 ...
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1answer
26 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 ...
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1answer
15 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 ...
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1answer
20 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 ...
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1answer
70 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 ...
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0answers
66 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? ...
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26 views

Proportional Keyframe editing

Hey guys I've been trying to get a script going for Proportional moving of keyframes to set values on a given frame (to help correct captured data). I've got an action in my scene I've started poking ...
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15 views

How do I turn keyframed animation curves back into bezier curves?

I've been handed some files where all the animation curves have been baked down into individual frames. Does anybody know of an easy way to turn these back into curves? And if not, why not? Seriously,...
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0answers
11 views

Can one define new interpolation types for F-curves?

I'd be happy if there were a way to define a new interpolation type (beyond constant, linear, and Bezier) for F-curves - let's call it ballistic and it is in fact "just" a special case of the Bezier ...
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0answers
83 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-...
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0answers
21 views

Animation, I want to alter all the axis at once in the graph editor

Often times in animation, I want to tweak the handles of the curves of an animation in the graph editor to get the tweening effect I want.(I only move the handles on the x axis most of the time, ...
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87 views

How to set interpolation 'LINEAR' to keyframe on mapping node or similar node?

It is not clear to me how to access the fcurve of these keyframes, it is not very clear to me with regards to the nodes, I have found examples of objects. If anyone had any idea how to access it I ...
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7 views

F-curve and driver, why is the value of the curve is not on the graph?

I just move from 2.79C to 2.8. Trying to make switch for FKIK on the leg & feet. Using driver for it, but the value wont move on the cruve like it should. I cant seem to rotate the curve like I ...
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1answer
43 views

Restore Graph Editor F-Curve Filter Location

Moving to 2.8 I realized that the search bar for F-curve filter is now located inside an extra menu as shown below: This is very counter-productive as animating requires you to filter out many curves ...
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1answer
27 views

Any way to avoid fcurves in scripting animations?

I am trying to use blender to animate spheres I am controlling with a python script. I already have the position data I want for each sphere at each frame of the animation. I don't need keyframes with ...
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0answers
19 views

apply fcurve modifier type 'Cycles' to an entire scene

I want to apply fcurve modifier type 'Cycles' to an entire scene, with start frame 1 and end frame 249, so the entire animated scene loops. I want to do this with a script. How can I do this?
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0answers
15 views

How can I stop a cyclic animation? [duplicate]

I animated fish that are swimming in a tank with cyclic fin movement. Now I want the fish to die and their fin movement to stop, but I cant get the cyclic animation to stop without the cycle to ...
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0answers
9 views

fcurve editing bvh

Can one reset or revoke the changes to the fcurves of a bvh file? I am unable to find a method apart from pressing cmd/ctrl z innumerable number of times. Unfortunately there's no easy method of ...
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0answers
9 views

Discrepancies between rotation mode context and fcurve

One of the problems in Blender is often the discrepancies one encounters in details. For example even though I can change the coordinate system from quaternions to Euler etc through the rotation mode ...
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0answers
30 views

How can i get the Driver Value? (which is displayed in Debug info)

Hellow, Please tell me how to get the value of the driver, which is displayed in Debug info. blender 2.79. F-Curve.evaluate(frame) - this value after all modifications, and I need what is in this case ...
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0answers
64 views

Is it possible to export a Blender f-curve noise modifier to another program?

I have a Blender background that looks like a stone wall illuminated by a flickering candle. The light source was made to "flicker" by putting a single keyframe at the light source's Energy Value, at ...
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2answers
110 views

is it possible to cycle only some keyframes in the graph editor?

I am creating an animation with lots of cycles and it would be nice to use the cycles modifier in the graph editor but to only affect some keyframes and not the whole thing because I have different ...
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1answer
47 views

How could I have an object's Z axis align with the first derivative of is location F-Curve

I want an object to follow a path in space (specified via F-Curves, or by clamping to a Bezier curve), but I want the Z axis of this object to always be tangent to this trajectory (the same way that ...
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1answer
22 views

How can I find an specific F-Curve given an action name?

Given action name, a data path and an array index, how can I find the F-Curve associated to that action?
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0answers
64 views

Linking material emission value with light power for easy animation

I have a flickering lightbulb. It consists of a point light and a lightbulb mesh with an emission material for when it's on. I'm using a noise modifier to variate the lightbulb power, but I'd like to ...
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1answer
195 views

Making trails in a curve mesh created by the Animation Nodes add-on

I've asked the question before in here: Creating trails using Animation Nodes by delaying the frame of the following polygons . This was for making trails, but for objects only. I realized I want to ...
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1answer
1k views

Can't find active f-curve panel

I just started Blender 2 months ago and i'm having a great time. I'm trying to add a noise f-curve modifier to my camera movement to create shakiness for a toaster animation kind of thing. However ...
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0answers
38 views

Global bezier adjustments across multiple axis within Graph Editor

Happy to join the forum. I'm looking to globally adjust bezier curves in the graph editor with little success. I come mainly from an After Effects who's graph editor allows you to drag and select ...
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1answer
999 views

Simplifying animation F-Curves in Blender 2.8

I can’t find out how to use the Simplify Curve add-on on animation F-Curves in Blender 2.8. I’ve activated the add-on, and in the 3D view the parameters are changeable when operated on a curve object....
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1answer
171 views

F-curve modifier animation - whole values only

Is there a method to have the graph editor only use whole values between key frames? I've tried linear interpolation as to remove any ease in/out. For example: I have key frames at frame 1 and 100 ...
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1answer
43 views

How do you edit an f curve modifier?

I added a noise f-curve modifier to a graph, but it's too jittery. How can I lower the amplitude and frequency of the noise?
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0answers
30 views

Moving of frame intervals for F-Curves modifiers

Blender 2.79b on Ubuntu 16.04. I have dozens F-Curves with Noise modifier. I use option “Restrict Frame Range” on N-panel for each of them to set particular frame intervals where modifier must be ...
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1answer
19 views

Is there a way to restrict the operation of a driver or even record the action of the driver in Blender

I have a small animation playing and I have made use of some trajectory equations in order to obtain a more realistic jump in the form of a driver, but I also want to add some additional movements to ...
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1answer
302 views

How can you invert an F-Curve

Basically I have a lamp moving on the Z axis according to a sound baked, then unbaked F-Curve, the problem is it's moving the exact opposite way I need it to, and so I believe I need to invert the F-...
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0answers
153 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 ...
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0answers
40 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 ...
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0answers
41 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?
4
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1answer
96 views

How to change order of F-curve's modifiers?

Is this possible at all? Because UI isn't obvious in this case.
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0answers
182 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 ...
4
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1answer
176 views

How to repeat an emitter 'burst'

I have a plane acting as a simple emitter. It emits 10 particles from frame 1 to 4. And again from frame 11-14. And again from 21-24. Then there's a pause for 40 frames, and the entire sequence ...
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2answers
174 views

FCurve handles to 3D Bézier spline control points

I'm trying to export Bézier curve animations from Blender, but i can't seem to figure out how the control points of FCurves should be interpreted. A Bézier keyframe for a 3D position typically has ...
2
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0answers
253 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, ...
3
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1answer
155 views

What kind of F-curve can be used for a perpetual elastic effect of clock second hand motion?

I'm trying to animate my clock second hand with an elastic F-curve to make it more snappy like a real hand. The thing is I'm not good at advanced math to figure out the equation for its curve, so ...
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0answers
51 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 ...