Questions tagged [constraints]

Constraints are object features, they control in various fashions the object's transform properties such as its position, rotation and scale. Use this tag for questions pertaining to constraints and their usage within Blender.

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Why does Object Solver constraint move object outside the range of frames I tracked?

I have a movie clip that's 1027 frames long, the object I wanted to track only moves in some of those frames so I just added tracking markers for this range, i.e. frames 241 to 895. So when I created ...
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How to make a flat plane follow a bone without rotating

So basically I want to do what should be a simple 2D eye rig where each part of the eye is a flat plane that follows a bone but doesn't rotate This the eye (each color is a plane) This is how I want ...
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Head tracking with torso rotation

I try to setup few constraint for the head follow the target and the torso following along to make animations easier. My plan was 1-Head bone with Damped track targeting the sphere 2-spine_03 bone ...
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Head tracking Target

Every time i tried to make the head bone follow a target , it never work , i tried with both Track To and Damped track and it always end up with the head being snapped , looking away or not reacting ...
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Copy Rotation not working, but was working initially

So I was making some changes to my rig, with some constraints applied to some bones. After regenerating it, for some reason, the constraint for curling the fingers stopped working. The screenshot I ...
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Problem with action constraint. bones jump to random places and the animation breaks

I have animated multiple bones of this armature, but after applying theaction constraint to the bones, some bones are jumping to different location and rotation as their starting values, some bones ...
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Blender 2.90.1 - Random errors while baking actions from a rigify rig to a separate, game-ready rig

Recently I started noticing these itty bitty random errors when I bake my animations to a rig made using Game Rig Tool. Like, bone rotations and/or locations will be slightly wrong. As mentioned, this ...
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Translate Z Axis location form one object to the Scale (X,Y and Z simultaneously) of another object

I've created an animation that requires the Z Axis location of one object (Empty) to control the scale of another (Circle). I can't seem to get the Transform Constraint to work for this - if anyone ...
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Follow Path: Set start point?

There's so many related questions i may have missed something. But i'm trying to set a series of existing objects that start with a pre-defined location. I want them to follow the same curve - but ...
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Rotate instances to face one object with Geometry Nodes

I've created a dense forest of plane image trees using Distribute Points on Faces and Instance on Points nodes. I'm attempting ...
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Question about limit distance constraint. This constraint can't use a cube shape as a target object?

I have a question about limit distance constraint. I've read this page https://docs.blender.org/manual/en/latest/animation/constraints/transform/limit_distance.html it says sphere again and again. I ...
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Why is the rotation constraint between two bones behaving so strangely?

I'm currently trying to constrain the rotation of some hand-bones in my rig to an IK-bone. However when using the rotation constraint my hand bones (...
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Make objects take the color assigned to the vertex they are currently tracking?

Hello, I have a grid of 300 individual mesh objects (spheres) and each move by constantly tracking 300 vertices through the Copy Location constraint. The vertex grid comprising of zero edges and faces ...
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Wave animation from the bones

I have a chain of bones (20 pieces). I need to make a wave on these bones (like in stadiums) Maybe someone knows how this can be done - so that one controller can make a wave or take it away? I would ...
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Blender Scripted Expression with distance not working when parented to empty

I am scaling a cube to 1.000 when it is close to a driver (empty placed in the center of the world). The cube has a driver with distance to the empty. See animation below and this works fine. Issue ...
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Parenting/Constraints problem for animation using Snow character

I'm new to Blender and trying to do an animation with the character Snow (which seems super nice). I'm trying to parent it to a bicycle but each time I go in the Add Object Constraint tab and add the ...
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Two handed object rig issue

Im trying to parent two hands to a broom handle. I created one armature with 3 bones and parented it to the stick of the broom Used the add-on Dynamic parent to attach the leading hand to the base ...
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Hiding intersecting parts and beyond intersections while animating piston movement

Im trying to implement a piston movement animation for this Bionicle leg piece and the pistons are intersecting with the mesh when moving or statically. The real life object cannot move in this ...
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Copy Location on Pose Bone

I have some mocap data captured in the form of empties. I need to transfer that to a bone in my armature. So I tried adding a location constraint in pose mode with the target as the empty. But ...
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Parents / child origin and movement problems. Attack on Titan swinging from hooks

I am currently making an AoT animation and working on the swinging from hooks. I used this tutorial https://www.youtube.com/watch?v=UO0OM0plOX0 to get an idea of how to make animated hooks and rope ...
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Why isn't this camera following the path it's constrained to?

I'm trying to constrain this camera to a curve, but it flies off the path. Here's what the camera's constraint modifier looks like: You can find the .blend file here!
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How do I prevent Subdivision Surface Modifier affecting Copy Location Constraint?

How do I prevent subdivision surface from moving an empty? Here is a cylinder, a vertex group has been assigned to the topmost vertices. A plane sits on top. I have fixed an empty to this location ...
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How to follow a path with a fixed camera direction?

I would like that my camera follows a path without rotating. How can I manage that? Below I added some pictures where you can see my settings and the problem.
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How do I stretch the ball with top and bottom bone?

How can I stretch the ball with the top bone and bottom bone? I tried using a constraint but I did not get the desired result. Any help would be appreciated. Thanks. https://wetransfer.com/downloads/...
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How to create a bone that move but constrained by 2 bones

I’m trying to animate the movement of the back door of a Lego star war gunship with bones. I captured what movement I want in the following video. Lego Star Wars - Blender Rigging Problem In the first ...
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"child of" constraint does not rig properly

I'm new here and to all of this, so I'm following a tutorial on YouTube, and I'm stuck on one part which seems simple in the video, but I've done something wrong and can't figure it out. I have set up ...
2 votes
1 answer
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How to rotate camera with constraint?

I use a follow path constraint to make the cam travel along a circle and I use a track to constraint to make the cam track to the object I want to render. That way I can control the camera very well ...
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Copy Rotation to Only Z Axis Not Working as Expected

I'm trying to get the selected ring in this picture to only rotate on its Z axis whilst tracking the lower mounting to the leg. What should happen is that the ring rotates so that the hydraulic, which ...
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Animating with linked armature and separate armature breaks constraints

I have a file with one linked armature (let's call this A) and another armature (let's call this B) that is part of the file itself. I have a child-of constraint from B to A, however when switching ...
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Parent multiple objects to each vertex of a plane all at once?

I created 200 empties and arranged them in a grid manner. I also made a plane with 200 vertices and gave it the Wave and Simple Deform modifiers. I intend parent each empty object to each vertex in ...
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Parent / Pin multiple objects to each vertex of a different object?

I've created 200 objects (empty plain axes) and arranged them in a grid. I also made a 200-vertex plane object and gave it the Wave and Simple Deform modifiers. Is it possible to "pin" or ...
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What is the best way to naturally animate hundreds objects?

I'm currently working on an animation consisting of 200 objects (spheres) for a drone show. I was wondering what is the correct way to naturally animate all the objects when transitioning from a ...
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How to align an y - movement of a bone to a circle without mathematics

I would like to align my y-movement to the movement on a circle without mathematics. I know how to calculate it. But i want to do it with a rig and/or constraints. I tried this: Bone moves only on ...
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Movement Along Locked Axis With Limit Distance Constraint?

There is a sphere with only X axis free for location, both Y and Z are locked. So movement is possible only along x axis. Now if I add a Limit Distance constraint to this sphere with a target that's ...
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Object doesn't follow path in a perfect curve

I want to make an object that follows a circle and emits a light streak using a particle system. The problem is that the object does not seem to follow the circle perfectly. It seems to follow a low ...
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how to constraint the moving sine wave to the rotating circle? [duplicate]

Can Anybody help to make animation like in the photo
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Mixamo Control rig problems [closed]

I'm trying to convert a simple rig into a control rig with the Mixamo Control Rig addon but there is a lot I don't understand. Can someone help me with the following: Why knee "mollet d-tweak&...
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Bone Constraints and Drivers not exporting correctly on FBX

I'm currently trying to export my armature + mesh to Unity, however, the animations did not seem to export correctly (FBX). The armature's bone constraints and driver seemed to only be refreshed 1-2 ...
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rotation slightly off when using track constraints

I am using some tracking constraints to get a gun to point to a hand. This is what I have so far: It all works perfectly fine but as you can see, the left hand is not holding the gun meaning the gun ...
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My bone gets to a weird location after setting target for Follow Path

As the title says, my bone gets teleported to a weird location and my armature bugs after I use follow path on the bone and set my path as target. I tried to re-model and create the whole armature ...
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Configure a camera to chase a flying drone with realistic lag?

I'm animating a flying drone, adding noise via the graph editor to make it wobble and such like a drone flying through shifting air currents. Now I'd like to add a chase camera a few feet behind the ...
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how can i connect 2 bone tips to each other?

im trying to connect 2 bone tips so they stay connected to each other. I'm rigging a painters mask to be able to sit on a hanger or something (no, cloth sim doesn't work on it) for example, if the one ...
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How do I assing a copy_transform constraint to bones stored in different lists?

So, I am writing a set of scripts to help me out with manual rigging in Blender. But I came across a problem when trying to assign constraints to 2 different groups of bones that I store in separate ...
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Is there a way to copy constraints from one armature to another?

I have two armatures, all the names and the number of bones are the same, but constraints are configured for one armature, is there a way, perhaps some script to copy the constraints to second ...
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Python - How to apply a constraint on a specific object

Is it possible to use the bpy.ops.constraint.apply(constraint="Copy Transforms", owner='OBJECT') on a specified object instead of the default behavior of ...
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Camera with "track to" constraint flips

I have a "track to" constraint and a "follow path" constraint applied to my camera. When the offset of the "track to" reaches a certain point, the camera flips around 180°...
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Baked particle system - Can it be parented to object for moving with the object?

I have baked 4 particle systems for this sort of portal I made which I am quite happy with. I planned it so I can select the portal and move it where I want with all the rest following it. All except ...
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The follow curve option in follow path constrain squeezes the mesh

I am trying to animate a fighter jet to follow along a path. but as soon as I turn on the follow curve option in follow path constraint, it squeezes the mesh. please help me in this matter.
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Wrong Orientation when Copy transformation

I have 2 sets of bones (DEF - deformation bones and TGT - target bones) and want to copy the transformation from TGT to DEF bones. When I select the DEF bones and do Ctrl+Shift+C (Copy transform), the ...
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System particles orientation target

I need a crowd looking at one target. If i move the target the people change the orientation looking for the target, just the orientation ( i need that the people stay). In tryng with particles ...
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