Questions tagged [interpolation]

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7 views

Interpolation formula from grease-pencil

I am looking for the math behind the interpolation feature from grease pencil. Does someone know it ?
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26 views

Interpolating between SVGs

I am very new to Blender. I am trying to create a mesh model to eventually 3D print. I have imported 3 different SVG files, each one is a frame from a video of a running horse. I want to connect the ...
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1answer
35 views

Sverchok Vector Interpolation Example

Hey I'm super new to sverchok! So I'm trying to learn how you take two lines and interpolate them into a plane like they do in the example within the sverchok docs (https://sverchok.readthedocs.io/en/...
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1answer
34 views

Why Bezier Interplation of Blender is not as much dramatic and cinematic as of other softwares?

I am working on a project and when i use bezier interpolation, it looks like linear interpolation in real time with no dramatic or cinematic effects at all on the objects. is there some settings which ...
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16 views

How to change interpolation to constant and set motion blur position to start of frame?

I encountered a problem where using motion blur in Eevee causes a render glitch when a Child Of Constraint keyframes are animated. Looking into the problem I found this bug report: https://developer....
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1answer
54 views

How to interpolate vertex colors in a cube?

I have this model made out of cubes: And I want to set the white cube some vertex colors, which correspond to the vertex's surrounding cube/cubes and interpolate between them. Note that this cube ...
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0answers
31 views

Make object follow moving path!

I need to get an empty to follow a moving path. The path is the guide for a record needle and is a rotating spiral. The empty needs to be still as I will be tracking the needle to it which will ...
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0answers
45 views

How to guide grease pencil interpolate/sequence when it goes wrong?

We successfully created simple animations using the workflow in "Your First 2D Animation In Blender 2.8". When we create more complicated animations, interpolate/sequence sometimes gets the ...
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2answers
228 views

Vertex color gradient is not linear

I am painting the default cube through vertex coloring. I paint the bottom four vertices as (0.25, 0.25, 0.25) and the top four vertices as (0.75, 0.75, 0.75). When I inspect the result in VERTEX ...
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0answers
19 views

Screw modifier with mutiple curves (how to get good result)

The screw modifier is good for creating a solid mesh from a single curve profile, but it does not seem to provide any options for handling multiple curve profiles. This is the result of using a screw ...
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40 views

Quaternion does not interpolate by the shortest route

I am rotating my camera. I have two rotations, both quaternions. The big white cube (which I added as refernece) can be seen in both frames, as proof that this rotation is not significant. from: {0....
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1answer
11 views

Hair children don't seem to respond to changes?

I'm trying to style hair for a character, mainly following this tutorial, but encountered a weird issue. Not only children hair looks all scattered instead of being in a clean line, but it also looks ...
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9 views

How to make Save own my Keyframe interpolation

Thank you first of all to be here to help me. I am working in blender since last year and currently i am in a project where i need to make the animations specifically add animation to a lots of ...
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5 views

IK bone for arm animation issues

I am having an issue with a 1 chain-length IK setup where the limit distance constraint on the IK bone does not actually work. Visually it works, however the animation is still acting as if the bone ...
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37 views

Blender particles interpolation does not rotate the children

I want to simulate simple grass on a plane (no hair dynamics, no physics). The object I use for the particle is an inverted L stripe so when I look from the top, I see the particle orientation. I want ...
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0answers
12 views

Writing custom interpolator

Is it possible to script a custom animation interpolator and assign it only to a subset of objects? I'm scripting a mechanical simulation for a small diy robot (scara kinematics, only rotation). I do ...
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2answers
75 views

Is there a way to make a node property value the default?

I'm making a Minecraft animation and the only way the render comes out with clean pixelated textures and not blurry textures is if I set the image interpolation in the shader node editor to Closest. ...
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1answer
33 views

How do I change the interpolation of multiple keyframes in the graph editor (f-curve)?

When I select multiple keyframes in the f-curve view (graph editor) and change the interpolation to "constant", it only changes one keyframe, so how do I change it for multiple keyframes? Thank you
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29 views

Using NLA editor to get averaged value of two animations

With NLA editor we can add, substract and multiply channels of multiple animations. Say we have two actions with the same duration where the first one rotates an objects from 0 to 30 degrees around X ...
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325 views

Eevee Linear / Cubic Texture Interpolation Complex Node Issue / Bug

A friend has been working on a project, and they have run into issues with using Linear Interpolation & Cubic Interpolation with their complex node tree. This node tree will be working with low ...
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1k views

Copy shape key to a different object with similar geometry

Is it possible to copy a shape key between objects with similar geometry? Specifically, I am looking to transfer shape keys from a higher poly mesh to a lower poly mesh that are very similar in shape, ...
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70 views

Beginner: Is there a way to calibrate 2d interpolation without doing it frame by frame?

I'm learning blender and trying out animating with grease pencil with the hopes of creating 2D animations for web (if anyone got any tutorials I'd gladly accept links). When I try to interpolate ...
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0answers
163 views

Animating the trajectory of solutions to ordinary differential equations

Hello Blender Community, I am new to the software and I am looking for some advice on the following problem. Suppose that we are given the position and orientation of a rigid object in Euclidean ...
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1answer
236 views

Can we preset Graph Editor Interpolations for Elastic?

Pressing [T] in the Graph Editor with an Active Keyframe lets you Set Keyframe Interpolation - Dynamic Effects: Elastic, is a choice. With that choice come basic presets, .8 Amplitude, 4.100 Period I ...
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1answer
146 views

Keyframes do not interpolate

For some reason, the keyframes I think don't interpolate. It is impossible for me to create two keyframes with different opacity in the same clip but, the strangest thing is that, when trying, the ...
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0answers
87 views

animation rotates over long angle (interpolation)

i am struggling with keyframing my 2d rig in blender: sometimes, the Rotation is interpolated over the Long angle: even though a bone only rotates About 40° between keyframes, the Interpolation goes ...
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55 views

Ease in and out when using constant interpolation

I am making an animation which contains thousands of key frames as it is musical. This requires constant interpolation so that the ‘hit’ stops and starts at exactly the right time. However, ...
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2answers
2k views

Animation: customize bounce interpolation

I want to animate a plane falling onto the ground. It’s good to have the bounce interpolation however you are quite limited when you want to customize it, for example adding more smaller bounces to ...
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0answers
134 views

Keyframe interpolation results in bouncy feet

I made a very basic test model (Programmer by trade, not artist), I wrote an exporter to export the model, armature and keyframes. Everything was going pretty well until I noticed that the feet of my ...
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2answers
230 views

Looping background (png image) in Blender for a car chase scene

While animating a car chase scene I need to have a background image (that includes trees, buildings etc) which moves from right to left and gets repeated in loops. I Couldn't find any driver or ...
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2answers
223 views

Bezier Interpolation

I have a Bezier curve with three shape keys as shown above. All three have the same length. The animation with shape key evaluation time from 0 to 20 (with 'Relative' unchecked) is shown below. As ...
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1answer
1k views

How do you turn on constant interpolation for keyframes in blender?

Following a tutorial with my own keyframes and the lecture was talking about how he is using constant interpolation for keyframes so blender doesn't interpolate the in-betweens like below. Where do I ...
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1answer
25 views

the problem is different animation, when creating and playing

When I create an animation by rotating the bone, I get the result that is different when I play an animation. The mesh is shifted during playback. https://www.youtube.com/watch?v=aaNqxWMJLMs&...
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1answer
370 views

Cubic bezier and cubic hermite interpolation for FCurves

I am writing a custom import/export addon for a model file format that supports animations for cameras with cubic hermite and cubic bezier interpolation. Is it somehow possible to emulate the same ...
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2answers
411 views

can you delete keyframes at regular intervals in a given range?

the BVH I imported has keyframes on almost every frame.. i want to edit like 300 frames and i want 1 keyframe for every 30 frames for those 300.. Im currently doing it by placing 2 markers between ...
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1answer
386 views

Constant interpolation with Noise Modifier

I am trying to create a curve in the graph editor with my interpolation set to constant and a noise modifier added. The ...
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1answer
833 views

Bezier curve interpolation not uniform

I generated a bunch of points using mathutils.geometry.interpolate_bezier() but noticed the points are not uniformly distributed on the curve. Please see attached screenshot. I think it has to do ...
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1answer
830 views

When is cubic texture interpolation helpful?

I noticed that Cycles is capable of using cubic texture interpolation for image textures but there is nothing in the manual about it, and every tutorial I've seen only mentions it by saying to leave ...
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2answers
1k views

How can I disable auto ease in [duplicate]

So we all know its there, and we all know how to fix it, but adding the extra steps to have to change the interpolation on every new animation just plain sucks. To be honest I don't find this feature ...
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0answers
363 views

Does anyone know if there's an addon for Grease Pencil Interpolation?

Is there currently an addon for Grease Pencil Interpolation? And if there is can anyone point to me a website that has it. thanks.
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1answer
499 views

Need to export animations into FBX without interpolations (need just keys solely )

Im creating animations in Blender (2.77) to export the model into FBX file to read it later using Assimp library in c++ to do calculate interpolations while run-time, but the problem is I can't ...
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1answer
861 views

I cannot find interpolate key of grease pencil in tab

I want to interpolate keyframes in grease pencil, but the interpolate key isn't found. In addition, although I tried to push shortcut (Ctrl + Shift + E and Ctrl + Alt + E), it doesn't work. Could you ...
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1answer
336 views

Interpolating continous rotation

I need some help with animating a rotating object. I am attempting to rotate the object with the help of a generated rotation matrix. I insert a keyframe for for every 5 frames with quaternion ...
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1answer
1k views

Unable to change animation interpolation or extrapolation

I'm new to Blender and I have a simple animation consisting of an empty object changing orientation around its Y axis about 30°. The steps to animate this: Opened up timeline and set position to 0 (...
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0answers
410 views

How to edit interpolation for multiple bones in armature?

Hello fellow blender artists, I would really appreciate, if you could have a look at my attached animation in progress: It's a printmaking press with movable desk and felt. It took me pretty long ...
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1answer
449 views

Can F-Curves be used to define interpolation between keyframes?

What I'm trying to do specifically is animate a punch. With the default Bezier curves, the interpolation between the "wind-up" and "contact" poses gets eased in AND eased out. This effectively makes ...
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2answers
454 views

How to create intermediate vertices of a humpy surface (interpolation)

I took a cube, stretched it, added a number of intermediate edges and adjusted their height to get a humpy top surface. Now, I want to get a smooth top surface by adding interpolated vertices. The ...
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1answer
197 views

Comprehension question about “Interpolation from Curve Mapping” node

I do not understand properly the behavior of the "Interpolation from Curve Mapping" node. At all interpolation nodes the output value of the corresponding Evaluate node is "0" at positon "0" and "1" ...
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3answers
2k views

What is the mathematical basis for F-Curves?

The Blender user's manual says: Although F-curves are very similar to Bézier Curves, there are some important differences. One of these differences is the fact that an F-curve doesn't allow a ...