Questions tagged [bones]

Bones are the individual sections of an armature that are used to deform the mesh. Bones act like other objects (they have properties and can have constraints) but are invisible in the render.

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How does blender calculate poseBone.matrix?

How does blender calculate a poseBone.matrix through the hierarchy chain? A bone's final matrix is a transformation matrix which defines the bone in armature-space in the current pose (M1). I want to ...
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1answer
98 views

What does the use_local_location mean for bones

To test this, I run a test to show the difference of use local location or not. C.object.data.bones['upperArm.R'].use_local_location = False C.object.data.bones['upperArm.R']....
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Blender bone.matrix API changes from v249 to v277

I've been using an old script for a long time to import a custom format which contains a 4x4 matrix for the bone transform (inverted) and 4x3 for the bone animation (3x3 rotation matrix + 1 location ...
4
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1answer
843 views

Is there a way to only store keyframes of only selected bones in poseLib?

What bones does "Add New Pose" operator store in Pose Library ? I am animating with "Blenrig" Character Vincent and it has lots and lots of bones. When I try to store poses it creates keyframes for ...
4
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1answer
405 views

Can't flip pose properly blender

Pose reverse fails, tried to rename some bones to check if there's a problem but it didn't change anything. Here's a gif:
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2answers
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How to make a bone NOT inherit location from parent? Or how to position bone at world location?

Lets say I have two bones, A "Root" bone and a "Child" bone, the "Child" bone has the "Root" bone set as its parent. How can I make it keep its world position while the parent moves? Now, the reason ...
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0answers
39 views

How to make one bone “push” another?

I'm very new to Blender and try to learn to make some stuff. This is what I have as an in-progress "proof of concept": Three cylinders(top, middle, bottom) linked to three bones. All bones ...
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How to parent a bone to an empty?

I've got a Problem, because I'm trying to create this (Rigging an umbrella-like object) -but I just can't figur out how to parent the bone to the empty. Can someone help me with this?
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Why are my custom wire bone shapes' lines thicker when in Pose Mode?

The wire bones on the right are thicker than they should be. In my other blend files the custom wire bones are like the left picture when in pose mode. I have tried almost every setting that I can ...
3
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1answer
363 views

How to achieve accurate rotation of fingers at the point they meet the palm?

I have problems with fingers in general but this is the hardest part for me. It looks ok at this point: But if I rotate at the base of the finger, problems start: This is because the rotation ...
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109 views

Is there a way to make an attribute unkeyable?

Can i make an attribute of a bone not keyable?, it makes me nuts that blender keyframes attributes that are supposed to be locked and makes my graph editor have way more curves than what i should be ...
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How to Move Bone Joints in Pose Mode like in Edit Mode? (without scaling)

I wonder how to move bones in pose mode like as you would grab the tips in edit mode and move them but without scaling the bone. Tried to set this up with damped track or ik rig. At both the target ...
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Mirrored bones move the other side of the armature aswell

I searched the questions on the site and I tried a lot of solutions but I'm kinda stuck here. This is what I'm dealing with When I move a bone on one side, the other side moves with it, basically ...
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(Batch) Rename subdivide-generated bones + associated vertex groups while keeping weight paints?

I have a few bone chains named like so (in order, these are lip, eyebrow, and "furrow"/epicanthal fold bone chains). All have been correctly weight-painted already. I would like to rename ...
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21 views

How can I solve this skinning wrong in blender but good in FBX and unity?

Hi, I spent my day try to resolve this twisting skinning issue but didn't solve it. My tail bones are not twisting as you can see, the Z axe is always up. The deform bones have copy transform ...
2
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1answer
62 views

How to import bone locations form a text file?

I've used a script to extract my bones location to a text file and I was wondering if I could use this text file to import the locations to a new project in blender using another script. Keep in mind ...
2
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1answer
294 views

Snapping Bones to Bones (In Other Armature)

I am trying to scale and position the bones of one armature to another. And, I was wondering if there was a way to snap the position of the bones in one armature to the position of the bones in the ...
2
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0answers
114 views

Copy animation data from one armature to another with Python

I've been trying to write a script to copy animation data from an armature to another one, unfortunatly without success so far. My situation is that i have : A mesh with it's armature that doesn't ...
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0answers
61 views

How do you lock a bone in 3D space during animation?

I am trying to animate things like a boy jumping up to monkey bars, grabbing them, then swinging around. I've been able to rig an armature with IK, no problem. I figure I can cheat by coordinating ...
2
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2answers
178 views

How to rotate all the keyframes of root bone?

I found an animated character online. I want to rotate this character for all the keyframes by 180 degrees along the Z-axis. This can be done by rotating the root bone. But how do I go about rotating ...
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30 views

Blender 2.8 pose mode bones global rotation?

How to change the global rotation of a bone in pose mode so it is always aligned with the y-axis? Example: I want the bone that controls my character's face to always face forward. Send help!
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49 views

how to animate complex origami folds in 2.8?

I've reviewed the questions regarding origami animations in this StackExchange and I've not quite found what I'm looking for. I have tried using shape keys to animate complex folds in a plane, such ...
2
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1answer
934 views

Convert particles to animated mesh including existing armature animation

The situation I am using a boid physics particle system in Blender 2.82. I am rendering the particles using an object that has armature animation. Following a process similar to what is described in ...
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42 views

How to rename bones without renaming vertex groups?

I'm making a model which is covered with panels that each can move individually, and some of these panels need to rotate, but not all, so some of them need a rotation controller bone at the end. I'm ...
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69 views

Facial motion capture - animate armatures

I've been doing a little motion capture of my face using the technique outlined in this tutorial https://youtube.com/watch?v=uNK8S19OSmA It's worked pretty well and the mesh of the face is moving in ...
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0answers
175 views

How to change position of rigged bones using python in pose mode?

I am new to Blender and I have been trying to execute this following code which is supposed to change the position of currently selected Pose bone (rigged) in pose mode : ...
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230 views

Rigid body objects interact with armature bone?

Is it possible in Blender to create an object (human + armature), rig it and make it to interact with other rigid body objects?
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844 views

How to open closed eyelids on pre made models

I'm "kind of" new to Blender and rigging/animation in general, but I like to jump out in the deep part of the pool. (Sorry) What I mainly want to do is rigging and animation, so I've kind of not paid ...
2
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0answers
51 views

Motion capture movement from 3d model animation

I have a set of animations of a model with a complex rig that I would like to copy to another model that is unrigged.The original model has more than 250 bones in total and it would take a really long ...
2
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1answer
263 views

How can I fix the rotation for this hand?

I'm making the rigging for a hand, but for some reason after I do the Ctrl+N, choose the Global +X. Not all of my bones stay on the same orientation, how can I fix this? I want all of the Z axis to ...
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0answers
1k views

Merge two armatures into one

I want to merge two similar armatures, that have same named bones in them And when I merge armatures with Ctrl+J, bones don't merge, the same named bones were like that: "head" and "head.001", "head....
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Creating a generic IK/FK snap script

I've tried deconstructing the Rigify addon to isolate the script part that handles IK/FK snapping, but so far I've had no luck. Rigify is a very nice tool, but I'd like to get the snap functionality ...
2
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0answers
282 views

Recalculate bone roll without ruining the animation

I have (what I hope) is a simple question. A while ago I rigged a character up with an armature, and since then I've made quite a few animations for it. Since beginning my project, I learned about ...
2
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0answers
482 views

Controlling robot servo arm (in real-time) via 3d model in blender

I am trying to create and control a robot arm (made of servos) via it's 3D model. I am big fan of Justin Dailey's work -- he was one of the first few people to accomplish this but his 7 year old ...
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215 views

How to make backpack parented to bone to be detachable with good weight paint for straps?

I have one backpack object paranted to armature like this (it needs to be detachable to be able to fall down, etc) with Child Of constraint to follow the chest bone of the character: But that creates ...
2
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1answer
497 views

Trying to add muscle to a 3d skeleton model

I have a 3d model of a atlasaurus that I imported to blender as a .obj file and it comes up, but I do not know how to add muscle to the existing static skeleton. I have searched online and all of the ...
2
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0answers
329 views

For VRChat specifically. I have the head from one model and the body from another. Character is floating in unity when scene is played

I used the body from one model and the head from another. I manually placed them together as well as I could and it looks fine. I kept the bones for the respective models, deleted the ones I didn't ...
2
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0answers
881 views

Exporting bendy bones/shape key animations?

How can I export these animations into another program? I don't need the rig itself in these other programs, I just need the mesh's animations to be exported, if that makes sense. Is this possible, ...
2
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1answer
711 views

Armature: automatic weights not working correctly

I've rigged a few models and automatic weights always worked pretty good, compared to what's happening to me now. Vertices assignment is all over the place and I don't know why. This happened only on ...
2
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0answers
238 views

How to move root bone non-independently of others

Here is my model right now; there is a root bone at the center and 4 'arms' spanning a circular mesh: When I use the G hotkey (in pose mode) and move it up the Z axis, all of the bones move equally ...
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0answers
95 views

Can't get armatures to work with loop cuts on mesh

I want to make the armatures on my mesh to bend the arms at their loop cuts, but when I do, even though the bone joints are in exact same place as the loop cuts, it moves the arms as so: Here's the ...
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0answers
118 views

Copy rotation From child to parent without IK

I made a constraint on the shoulder bone of my character so that when the forearm bone moves, the shoulder follows the rotation with 50% influence. But it causes a dependency cycle and the movement ...
2
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2answers
593 views

Mesh distorted when armature bone rotates

My character's arm starts to get suck when rotated on x axis. I tried weight paint and it does not seem to help much I'm really new to Blender and 3D animation and any critique is appreciated.
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0answers
56 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 ...
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0answers
125 views

Unable to export animated model in MD5 format

I am trying to export this animated model(It has 6 planes which fold to become a cube). I am getting the error on "Plane.004" saying ...
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0answers
120 views

Copy keyframe from action to another while changing bones

I just started using python with Blender, and I'm trying to do something specific. I have a skeleton with a few bones (Say bone1, bone2, bone3) and an action with a few keyframes (kf1, kf2, kf3). ...
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0answers
501 views

Armature Root Bone in FBX Export

I've seen several posts on this topic, but I fear they are old and forgotten, so I decided to post a new one. I've been working around the armature being exported as the exterior-most bone in FBX ...
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0answers
49 views

Limit Rotation for bones

I am trying to learn the proper way to use limit rotations for bones in my character. I have a good mesh and I have the bones inside but I cant seem to get the limits right. Please help me
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0answers
305 views

How to add multiple duplicate-linked legs to a single armature?

I want to make a quadruped insect robot. Each leg will be exactly the same. They will have three regular bones and an Inverse Kinematics bone at the end. I want to connect them to a single body/spine ...
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0answers
74 views

Create custom bone shapes from vertex groups

I have an armature parented to a mesh. The mesh is constructed from a set of cuboids which I created around each bone, where each bone controls only the vertex group around it, and these cuboids ...

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