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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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Rigging Pistons Mounted to Rotating Bases

Need to rig a piston where each half is mounted to a different mesh that rotates on different axis. With regular pistons this could be accomplished with Damped Tracks, but this won't be enough in this ...
cantStop45's user avatar
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8 views

IK Legs: Pole Rotate in Circle [duplicate]

I am making IK for legs. I have a target bone and a pole bone. I want the knee to always face the same direction as the foot. So whenever I rotate the target (foot rotates), and therefore should also ...
Alex Lisovets's user avatar
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12 views

How to let player determine path through a tunnel at runtime?

I'm trying to create a game/animation where the player is traveling in an infinite tunnel and they have control over where the tunnel goes next. Imagine you were in a subway train's driver cab and you ...
kyopa's user avatar
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0 answers
20 views

Polymer Brownian motion - fixed distance between particles

I would like to simulate the brownian motion of a polymer chain with Blender. I would like to model the polymer as a series of N segments of equal lengths L. So there would be N+1 vertices and each ...
Jona's user avatar
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2 votes
1 answer
281 views

What are Blender equivalents to Softimage constraints?

Thank you for taking the time to read this. I've been struggling to get my shoulder armor for my Mega Man X project to work with an IK system. I stumbled upon a blogpost that potentially has some ...
Player 2's user avatar
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1 answer
56 views

Animation to Unity with Constraint

So I made a character and an animation, and that character is stirring a spoon. I added that spoon as a constraint to the hand that stirs, but now in unity the spoon does not move when the animation ...
Andrew Patterson's user avatar
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1 answer
27 views

Why is my intended target not showing up in the 'Track To' constraint list?

I am trying to get my camera to follow my character's animation. The character has a bone named "fx_damage_02", and with other characters from the same source, that bone shows up in the '...
Jack Harris's user avatar
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18 views

Lock Axis on Force Fields

my goal is that the cursors follow the button and always point to the button with the index finger. The button should move with keyframes and be a rigid body just like the fingers so that it collides. ...
adrian.blender's user avatar
2 votes
0 answers
50 views

Constraints (Transformation) are not working as expected

Help me understand the constraints. My wheel is attached to the empty box so that it rotates along the forward x-axis as the empty box moves LOCALLY forward (direction - minus Y ). And everything ...
arachnoden's user avatar
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1 vote
0 answers
37 views

Constraints Fail when Using Input Variables in Drivers

I'm encountering an issue in Blender where constraints stop working properly when input variables are used in drivers. Here's the setup: I have a camera and a cube (scaled to 0 on the Z so it looks ...
David.Rodrigues's user avatar
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Constraint which finds "lowest" point on object even as it rotates? [duplicate]

I need to drag an object across a floor (without physics) which is rotating and thus have different parts of its mesh (or at least a plane representing a simplified version of it) as its lowest point. ...
eobet's user avatar
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1 answer
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How can I export a creation so that I can use it in another project with its transformations controllers still working?

I'm very new at this. In this collection, the highlighted "trackcontroller" empty sphere is what allows the wheels and track to move via its Rotation X with Transform Constraints. Is there a ...
C - MOON's user avatar
2 votes
1 answer
31 views

Animation - temporary parent

During an animation, I want to move "Object A" along a path and at some point attach"Object B" to "Object A" before releasing "Object B" further down the path. ...
Astolbon's user avatar
  • 105
6 votes
2 answers
470 views

How do I snap an object permanently to another object in animation?

I have a Blender project that I am trying to make replicate how old video games worked. What I am working on has an artificial shadow for an object. The shadow is a plane that is supposed to snap to ...
Kid With Glasses's user avatar
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0 answers
39 views

How to use constraints to simulate hinges?

You can use rigidbodies and that kind of works, but only in animation. My goal is to drag a part that is connected via what should be hinges and the rest to act accordingly. Also, with animation, ...
Zurechtweiser's user avatar
1 vote
1 answer
21 views

How to freeze the hand movement

Hi, I'm new to blender rigging. I copied a movement from Mixamo to my own rig, now I want to freeze the hand movements (only) and also want it to rest it's hand (as I can not make it grip, no finger ...
pnm's user avatar
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4 votes
2 answers
629 views

Steering wheel rotation

Is there a way to rotate the tires of a car model and have the steering wheel move with it correctly? I tried to copy the rotation of my tires on to my steering wheel and it rotated in the wrong ...
eris's user avatar
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1 vote
1 answer
28 views

Camera animation - path creation - Walking effect

Hi there sorry again for bothering you guys with what might be something rudimentary, but i am having trouble animating a camera and make it look like someone is walking in the maze i have created. So ...
ASilva's user avatar
  • 25
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0 answers
15 views

How to attach several rigs to an armature without it slowing down

A model I'm working with has several accessories that can be added to the model. Each accessory has its own rig and needs to be attached to the main rig to work properly. I thought simply using a &...
Ethan's user avatar
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0 answers
20 views

Copy Rotation not resetting normally to the original pose?

So I added two Copy rotation to the bone wrist, and when I rotate and try to reset the pose with Alt+R/G/S, it's necessary to press these commands several times to go back to the original position, ...
KYron's user avatar
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2 votes
1 answer
24 views

Problem with Rigid body and Child Of constraint

thank you for your time, I've been following this tutorial: How To Make Any Rig Into a Rag Doll in Blender, but I have a problem, I'm using the Child of constraint on my bones to parent them to the ...
Pierre Bolteau's user avatar
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1 answer
28 views

Is it possible to restrict the movement of 3D objects within a box in Blender?

I have 33 sphere objects positioned according to data from a txt file using Python scripting, forming a humanoid figure. However, the figure tends to move out of the camera frame or may have spheres ...
MAYDAE's user avatar
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0 votes
1 answer
23 views

Can you animate to location of a generic physics constraint?

I have two rigid bodies (one active and one passive) connected through a Generic physics constraint, and would like to animate the location of the passive rigid body so that the other follows. Imagine ...
Steffen's user avatar
  • 13
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0 answers
86 views

Trying to apply array modifier to armature

I'm trying to create drawers dynamically and place them in a Desk. I have created a drawer instance with an armature, as I want to add some contraints to it to allow it to open only in X certain ...
Fernando Urkijo's user avatar
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1 answer
35 views

Apply constraints to bones, then insert keyframe, then remove constraints (and from Python too)

If you do as in the opening question, you lose your poses as soon as you remove the constraints. One solution is to apply visual location, visual rotation and visual scale. Then you can remove ...
Hatoru Hansou's user avatar
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1 answer
39 views

When One Object Rotates on X Axis, Another Object Rotates on Z Axis (Constrains)

When this circle object rotates on the X axis, I want the cylinder object to rotate along the Z axis. I'm pretty sure this can be done with the copy rotation constraint, because I did it once before, ...
Ryan King Art's user avatar
1 vote
1 answer
28 views

How to Lock 2 NLA Strips Together

I have worked out a way to combine two CMU animations where the final and start local locations and rotations around the same world position is different. To clarify, if I import the bvh for 2 ...
DrIgnatiusCole's user avatar
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1 answer
18 views

Simulating Moving Wires on a Motorcycle Model

Edit: I solved it using this post How to create a cable/wire for animation? However, when I copy/paste/append the bike into a new scene the cables with the cloth physics are distorted and not how ...
Freddy Karlsson's user avatar
1 vote
1 answer
57 views

Rigging Tank Treads (Treads Deform When Rotating on X and Y Axis)

I'm trying to rig tank treads. I followed this great tutorial By GodRayStudio. Tutorial I Followed: https://youtu.be/FqfIfEx5Eb8?si=RD9_6Ar59ywLq2Qy The tutorial makes a pretty good setup, but the ...
Ryan King Art's user avatar
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0 answers
25 views

IK weird behavior

I always use a simple IK setup for the arms : Wrist IK ( Target Elbow ) + Elbow IK ( target Shoulder 2 ) Wrist + Copy rotation modifier with Wrist IK as target It always worked on thousand of model ...
ShuLien022's user avatar
1 vote
1 answer
33 views

IK Chain Confusion: Unable to affect hand's rotation without affecting whole chain

I've built about a dozen IK chains before. I must be going senile over here. When I rotate the hand control in what I believe is a standard IK setup, the entire arm rotates. I am unable to affect only ...
JPBiv's user avatar
  • 13
1 vote
1 answer
34 views

Cone surface definition in relation to other geometries, and intersection of cone surface and plane

I am new to Blender and would like to create a 3D graphic for a technical paper. The three-view drawing of what I need is shown below. There is a line (purple in the figure) that intersects with the x-...
snow023's user avatar
  • 13
0 votes
0 answers
39 views

Is there any way to get blender control rig in unreal engine.?

I need to use control rig for a model that was created in blender and rigged with bones and control rigs. I need the same control rig instead of creating it from scratch in unreal. Is it possible to ...
Amaljith. Kt's user avatar
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0 answers
18 views

Rigify doesn't move my mesh when constrained

I followed a Rigify tutorial to a T (https://www.youtube.com/watch?v=S52A-K5tLDc) but at around 8:40 when he constraints both of them mine just won't move and I have no idea why, I did the exact same ...
DingusMB's user avatar
0 votes
1 answer
41 views

where are my relationships lines?

I know that relationship lines are the dotted lines that happen when you hit the delete key on bones. I delete the bones between the spine and the legs, and my lines are not there. I read the ...
Full Salvo's user avatar
1 vote
0 answers
32 views

Simultaneously constrain object to point in tracked footage and distance to another tracked point

I have a movie clip which I have set up a camera track for, as I would like to capture the camera's movement in my 3D scene. I also added three additional trackers. In the tracked video, these tracked ...
unknownperson's user avatar
1 vote
2 answers
25 views

Transformation constraint to the same object

I have an image plane that I would like to constraint to itself, so that it would be scaled when I translate it. I know how to use a transformation constraint from one object to another, but it does ...
David Pagnon's user avatar
0 votes
0 answers
72 views

Snapping vertices to vertices of different plane

I am looking to create an effect where I have two planes snapped to each other, where, when one scales up on the z-axis, the other one scales down so that the sum of the two (or three, or four) always ...
Bingo Bango's user avatar
0 votes
0 answers
65 views

Why won't my robo arm spin right?

I'd like this shoulder to spin only along the x axis whith the IK of the arm. The IK Lock axis switches aren't doing much though. I need everything to deform mechanically and rigidly adhering to those ...
Zach Bowen's user avatar
1 vote
1 answer
33 views

How to get consistency using Camera to follow path Offest?

This is not the first time I am experiencing this issue on my workflow, usually I just deal with it rearranging stuff around, but this time I would like to find a better way. I use Camera to follow ...
emablender's user avatar
0 votes
0 answers
26 views

How could I bake the movements of two seperate objects parented to the same armature?

I'm currently attempting to bake the object movement of two separate door objects that I rigged with constraints. What I would like to do is bake the rotation and location of both doors so that I can ...
Isaiah's user avatar
  • 13
1 vote
1 answer
33 views

follow path from specific point not working

i have an animation of 300 frames frames 1 - 50 a sphere moves from the center of a circle to the perimeter frames 51 - 110 = 1 complete rotation frames 111 - 170 = another complete rotation frames ...
nick nikolaidis's user avatar
0 votes
0 answers
19 views

I want one controller to affect the whole Rig

I have created a rig that moves all the desired parts but I need one main control to affect everything at once such that individual controls rotate around allowed axis when that main control is moved
Ovu Enyenihi's user avatar
0 votes
0 answers
24 views

How can I make rigged eyes stay on top of another rigged object?

I have recently created two rigged objects, one is representing a rigged letter and the other is rigged eyes. I have managed to make the letter to deform as I wish using the rig and the same goes for ...
Tanamas's user avatar
  • 101
0 votes
0 answers
42 views

Limit Translation parameters for "generic spring" rigid body constraint don't work as expected

I have a chain of rigid bodies connected in series by empties with the "generic spring" rigid body constraint like this: If the space between the rigid bodies is stretched, the armature ...
DED's user avatar
  • 249
0 votes
1 answer
34 views

How to keep an object a fixed distance from a fixed camera while following a moving path? (lock Y/Z but follow X)

I am using a cycle modifier to animate things moving - imagine an infinite roadway scenario. The roadway is built on top of a Bezier curve (the path). The road is attached to the Bezier, the Bezier is ...
Erik Jacobs's user avatar
0 votes
1 answer
30 views

How can I temporarily follow a path that's animated via cycles?

I'm trying to have an object swoop in and then begin following a path. This post kinda sorta seems relevant, but I have an added hitch. I've got a Bezier curve that is moving, and I'm doing so via a ...
Erik Jacobs's user avatar
0 votes
1 answer
50 views

How do I control my collection/object rotation after applying align euler to vector?

I'm new to Blender and I'm trying to make a cake with mini strawberries sticking on the sides around the cake. So far, I got them to the position I want them to be, but I'm having trouble controlling ...
sab's user avatar
  • 1
0 votes
0 answers
19 views

Why is my partial influence child-of-constraint rotation bouncing back?

I'm trying to make a mileage meter using the Child-of constraint with a partial influence of 0.1. In theory, rotating the first marker should gradually rotate the rest consecutively down the line. ...
Sonya Zhemchuzhnikov's user avatar
0 votes
0 answers
29 views

Need help with a character + double handed staff game rig

I need help with a double handed staff character rig I made for a game project, since I don't know if I've used the best practices for my purpose. First of all, I am a newbie to complicated (at least ...
Denis Sebastian Prundus's user avatar

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