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Questions tagged [skeletal-animation]

Skeletal animation is a technique by which a complex mesh (or "skin") is animated through the animation of a simpler hierarchical collection of geometry (the "bones").

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How do I mix 3D skeletal animations?

I'm trying to create a 3D-model skeletal animation system for C++/Open GL. I would like to be able to mix animations by allowing animations to only affect specific bones. My game has ride-able ...
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How to set default scale on a per bone basis

Does anyone know how I can change the default scale on a per bone basis in Maya? (I'm using 2016) I want the scale to be 1,1,1 for this bone without making it smaller than it currently is. So, I ...
erebel55's user avatar
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How can I rig an object to animate from two different orientations?

As an example: Say you're animating a skateboard. The board has a nose and a tail. Normally, the nose points forward and the tail points backward. Now say you have two animations: idle and trick. The ...
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How does an interruptive combat animation system like Metroid 2 work?

See here for reference. For the most part this game is a 2D side scroller with the expected platformer architecture: move left, right, jump, shoot, etc. Enemies move and you jump out of the way or ...
Dan's user avatar
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Skeletal Animation: No initial bone rotation

I am currently trying to implement animations in my game. I am having an issue where the bones do not rotate properly. In my program, I apply an inverse bind pose to each bone to move them to bone ...
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How can I find an animation's final compression size in Unity?

I've been looking at animation compression, and the only way I can seem to find it's final size is to create a Build and check it in the Profiler. There must be an easier way?
john's user avatar
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2D Skeletal animations exported to SVG

I would like to create skeletal animations, and Synfig looks quite promising. This is a video walk through of its "bones" feature, used to do skeletal animation. Ticks all the boxes thus far, ...
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Exporting 3DS Max animated biped character into Assimp

I've been having some trouble with MD5 meshes exported from 3DS Max into my C++ program, using Assimp to import the model and its skeletal animation. If the models were rigged manually with bones, ...
Doug Kavendek's user avatar
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Swap limbs of a skinned mesh

If I have a model, such as a robot, I am able to swap its limb meshes out and replace them with other robot limb meshes by merely removing the limb mesh from the skeleton and attaching the new one to ...
EvilWeebl's user avatar
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2 votes
1 answer
920 views

ASSIMP skeletal animation with some FBX files has issues - weird node added

Hi I'm trying to work load fbx files to my OpenGL Renderer using ASSIMP. However, weird nodes that are not in the original fbx file are added whenever I load the file with the ASSIMP importer. For ...
Peter's user avatar
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Meaning of errors when compiling Source animated assets

This question will be composed of 3 somewhat separate questions regarding the creation of animated assets in Source. The documentation is quite poor and I am having a hard time understanding the ...
4nt's user avatar
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Importing skeletal animation from vertex coordinates in maya

I have files of different frames of an animation which have the vertex co-ordinates of a human skeleton in 3D space. I want to import the animation from these keyframes into maya to perform motion ...
Kunal Chawla's user avatar
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How to blend 2 different metahumans seemlessly during animation

I'm new on this site so please let me know if this is the wrong section to post to. I have an idea for a whole bunch of animations revolving around 2 semi-identical twins that live in the same body. I ...
Majd Odeh's user avatar
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How to animate multiple animation blueprints offseting time for each instance?

I'm new to Unreal Engine and would like to get an effect similar to this one: The idea is to have an Animation BluePrint with data from a Live Link Pose node to start with. To achieve the effect, my ...
George Profenza's user avatar
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1 answer
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How to implement skeletal animation for Signed Distance Field models?

When animating a 3D model, we want the surface of the model to remain continuous (such that, for instance, the limbs do not seem to slide on the torso, but stay attached at their position). In a ...
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123 views

Clothing mesh penetrates character when imported into Unreal

I'm trying to import a .fbx file with animation from Maya, but the mesh has changed at some specific frames automatically, which makes my character intersect with the cloth. The mesh itself does not ...
EdwardW's user avatar
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Understanding matrix transformations for skeletal animation

I am working with Collada and GLTF. Say I have a humanoid with 3 bones with the following hierarchy: B0(root) → B1 → B2. Terminology: bind pose is the same thing ...
Kroma's user avatar
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How to animate a customizable pixel art platformer character?

I am working on a 2d platformer which is made up of pixel art. I want to make my character customizable like in stardew valley. How can I implement it and create animations for my game like run , idle ...
Prince Kumar's user avatar
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434 views

Skeleton bone in incorrect spot in-game yet, blender rig, skeleton mesh and physics asset are all correct and behave properly

I've made a custom character and rigged it in blender. Then exported/imported into ue4. It behaves properly in the PHAT and the skeleton mesh looks fine and it all behaves properly in the simulations. ...
thissiteistoxic's user avatar
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IK script causing glitchy movement

I have a FPS character game object, which consists of just the arms. I made this IK script off of a tutorial. ...
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How can I allow player-created content to add morphs to Daz Genesis 8 characters(UE4)?

We use Daz Genesis 8 characters in our project. Content creators would load their morphs from Daz to our game. We would like to add these morphs to our characters so they can be modded, edited and ...
formatc2013's user avatar
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How is root motion done in Skeletal animation

I am using Assimp library to load bone and mesh data and using basic interpolation to accomplish the animation part. Right now I want to move my character position with animation, i.e. root motion. ...
videogamechef's user avatar
1 vote
2 answers
182 views

Parts of 3D model disappear during animation

I'm trying to properly play an animation done in Blender 2.8 inside my OpenGL application. When the animation is running, it happens that at some particular frames, some parts of the 3D model "...
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Can COLLADA be used for partial animations / animation blending?

I am making a game engine, using the COLLADA format for my models. Part of the requirement for my models is partial animations, for example if the model was a person, an animation could only affect ...
BWG's user avatar
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Blender - Exporting and Replicating Bone Animation

I'm having trouble replicating Blender bone animation in my game. Bones that have a vertical rest position (Euler(PI / 2, 0, 0)) are animated correctly (e.g. head, neck, torso, legs, shins), however ...
Vercidium's user avatar
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36 views

Running animation on nodes

Suppose I have a character and an array of 3D coordinates, separated at most a certain distance apart. I would like to have a character run across the points in the array, placing its feet exactly on ...
Mark Marketing's user avatar
1 vote
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1k views

ASSIMP aiNode->mMeshes understanding

I'm trying to use ASSIMP to load an fbx file with a skeleton and animations, but I'm stuck on something I'm misunderstanding and struggling to see it. I've attached 2 images, one of the fbx file as ...
Dtor's user avatar
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How to apply constraints to limb movements of a 3D human model?

I'm animating a 3D human model using playcanvas game engine according to the quaternion data provided by IMU sensors. How can I limit the movements of the limbs of the human model to avoid unrealistic ...
wageesha's user avatar
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0 answers
66 views

Problems exporting animations to Unity 5

I've finished a model in SpeedTree Cinema v7.1.1 and the model exports correctly, but I can't figure out how to export the wind animation to Unity 5. The only problem is that the wind animation itself ...
user18723's user avatar
1 vote
0 answers
107 views

How could I implement a movement system like Intrusion 2 has?

Here is a trailer of the game Intrusion 2. The characters seem to move with physics, but look animated as well. I'd like to know how such a movement system works and how I could go about implementing ...
Grigori's user avatar
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1 answer
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How to make my animation play once?

In 3ds max, I've made a Cannon that sets itself up, but I only want this animation to play once, here's where I'm trying to make it loop only once: When I click the toggle at the bottom, it stops the ...
Bee's user avatar
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0 answers
450 views

How can I import animated 2D content from Animate CC into Unity?

I'm a programmer making his efforts to get a bit into art. I have basic drawing and animation knowledge that I think is enough to have some simple games rolling. I have used several programs to ...
Notbad's user avatar
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1 vote
0 answers
511 views

Automated animation retargeting

I am currently developing a video game using my own game engine I develop at the same time. While making a good progress in the past months, I am currently stuck. I assume I only miss a minor thing, ...
GameDevAlien's user avatar
1 vote
0 answers
234 views

How to compare recorded skeleton with live skeleton by using kinect sensor?

I am developing project where user will perform movement in front of the kinect. Up to now I can calculate the angles between joints and can detect body parts. My second approach is recording these ...
Hashan Wijeratne's user avatar
1 vote
0 answers
51 views

Unity 2D animation running partially

I have a 2D skeleton animation of human walk cycle - which is fine. I am trying hard to code that should STOP only hands animation but legs should not (on a player input - for example on space bar ...
Yogesh's user avatar
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1 vote
0 answers
366 views

Edit bone transforms for each key frame to fix mixamo animation

I have downloaded FBX animations from Mixamo.com for use in game. But seems like the "root" skeleton bone does not have translations in Z axis; which makes animations like climbing a ladder or ledge ...
Manmohan Bishnoi's user avatar
1 vote
0 answers
126 views

How does a character creator system works?

Like in Aion for example, how does it work? Do I just need to take a basic 3D mesh of a character I created and then make some modifications to it with sliders or do I need to create different clone ...
Cei's user avatar
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1 vote
0 answers
162 views

Is it normal in skeletal animation to NOT consider the translation component in bone transform matrices?

I'm using assimp to load a model, and DirectX11 and DirectX ToolKit to render it. In the document of DirectXTK's IEffectSkinning, it says: As an optimization, SkinnedEffect and DGSLEffect assume ...
James0124's user avatar
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1 vote
0 answers
2k views

How to apply transform matrices retrieved from FBX

I'm trying to import a skeletal animation using FBX SDK. I followed this article, managing to load all the needed data, but when I try to display the animation the mesh falls apart. My knowledge of ...
inzombiak's user avatar
  • 121
1 vote
0 answers
328 views

Rigging Skinning of human skeleton skin mesh scanned by MRI

I have successfully developed a system in Qt/C++ for human musculoskeletal mocap simulations. I can run asf, amc, bvh motion capture files and can visualize the joint transformations. I even simulated ...
maxpayne's user avatar
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1 vote
0 answers
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Rain World : How to have intelligent movement / animation?

In the project RainWorld the characters seem to move "intelligently" as they move "unrestricted". They seem to know "how" to move their limbs and "what" needs to be done. Here for an example the ...
Blue Bug's user avatar
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1 vote
0 answers
114 views

Relative Transformations for Bones

I'm using Blender to export my armatures in relative coordinates, and I'm trying to get to absolute coordinates in my engine. For the above example, the childBone's ...
371273's user avatar
  • 131
1 vote
0 answers
817 views

XNA - How to move skinned model and merge animations

After you helped me to resolve my loadContent problem I've wrote some code and made 3D model with animation. Because XNA 4.0 doesn't support .fbx with multiple animations I've generated 3 models with ...
user1889999's user avatar
1 vote
0 answers
179 views

Maya Animated Character export for XNA 4.0 problem

To begin with, I'm trying to export an animated character in .fbx format from Maya 2013 to XNA 4.0 In Maya, The Model has a basic rig and the animations are in clips made in the Trax editor. so the ...
FahidK's user avatar
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1 vote
0 answers
267 views

Updating physics for animated models

For a new game we have do set up a scene with a minimum of 30 bone animated models.(shooter) The problem is that the update process for the animated models takes too long. Thats what I do: Each ...
Mathias Hölzl's user avatar
1 vote
1 answer
146 views

Skeletal animation with multiple animations running at the same time

I've spent a long time attempting to figure out how complex animations are done and wrote quite a few different skeletonish frameworks myself, but they've never really came out good enough to be ...
braffolk's user avatar
0 votes
0 answers
20 views

Running slide animation problem Unreal Engine 5

When my character is running and when I press "c" he is doing good animation for slide but the problem is that when animation is over the character is going back to the place where he was ...
Sven Petrović's user avatar
0 votes
0 answers
24 views

How to put animation correctly from one character into another in Unreal Engine 5 using retargeting? Root problem

So I imported animation from Maximo into Unreal Engine 5 but my character is not moving properly in running slide animation. I used retarget Root option and now my character's animation is good but I ...
Sven Petrović's user avatar
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0 answers
30 views

Does an animation need to be loaded with a model?

I'm using assimp for my C++ rendering engine and I'm having difficulties with skeleton animations I've gone through a couple of tutorials/guides such as the skeletal animation chapter on learnopengl ...
Konjointed's user avatar
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0 answers
65 views

How to move the bones of a model by just pressing a key in unreal engine 5?

I have the following problem. I need to be able to rotate a bone (any bone) in a model in unreal engine 5.3. I cannot use the timeline. For example, if I press the space bar then I would need the arm ...
Nicolas Osorio Bustos's user avatar