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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18 views

Align Camera Angle to Averaged Normals for Small Area Below Camera

Background: I have a large terrain mesh (~6M vertices) which I would like to "drive" over with my camera. The mesh was sourced from a high quality physical terrain DEM. I am using the ...
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Help with local coordinates with parents, constraints, and drivers [duplicate]

I'm trying to make a wheel rotation system using drivers https://youtu.be/3mIrbZb-ZQQ I have tried to fix this with drivers, constraints, and parents, all of them do the same thing.
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1answer
35 views

Rigid body chain with armature breaks

I'm trying to make a chain rigid body simulation. I found I wanted to streamline it more, so I could rotate a bone to move the end/start, and I added a bone constraint to it as well, so that I can't ...
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Copy Rotation / Location via Object or Bone Constraints

I am creating a scene where I have animated a Bezier Circle to rotate. I have been able to rotate the Bezier circle in a way where it starts moving from stop, and picks up speed then slows and stops ...
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27 views

How to parent an object while still maintaining local coordinates?

I'm rigging some wheels, and the best method I've found to wheel rotation is to use the local coordinates of a controlling empty, whether with drivers, rigs or constraints. However, I need to turn the ...
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Issues with copy rotation bone constraints

I am running into an issue and was hoping someone could help! In photo 1 you see an armature I am working on of a wing. In photo 2 the wing is spread, and in photo 3 it shows one of the other feathers ...
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1answer
29 views

How? Follow path and change camera's track to from one object to another

I have an empty parenting a camera and the empty is following a bezier curve thru a constraint. I have the camera 'Track'ed to' a moon, but as the Empty/camera travels along the bezier curve I want ...
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Bone constraint [x]transformation & Object [x]transformation

I am having trouble with xTransformation on Bone Constraint. It is not behaving the way xTransformation on Object Constraint behaves. Object Constraint/ xTransformation works the way I want: The ...
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how do i get this object to follow a specific bone?

I am trying to get this model to follow a specific bone on the character's hand (the "weapon" bone) and it becomes really big when I give it an object constraint. how do I fix this? I plan ...
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289 views

How to map the X rotation of one object to the Y rotation of another object?

I am trying to make the X-rotation of one object directly affect the Y-rotation of a second object. I tried using the Tranformation Constraint, however I was only able to map the X-rotation of the ...
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How to write a script that selects bone constraints and fill in the blanks [duplicate]

I am using Blender2.78 and have zero coding knowledge. I'd like to run a script that adds bone constraints 'Copy Location' and 'Copy Rotation' in each bone in my armature and fills in the target slot ...
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Child of constraint mess - Set inverse undo previous pose

I've never used Child of Constraint before and must've messed it up here. I'm making a dance animation and have Child of Constraint set up between the dancers' hips. Please help. I have no idea how ...
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1answer
30 views

Rotation constraints cause odd movements

I'm putting together a model of an aircraft with moving parts, and as part of the process, the parts require limitations to simulate an appropriate range of motion. This worked for a couple of the ...
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1answer
61 views

Is there a way to bake a Child Of constraint with proper subframe interpolation?

I'm exporting animations from Blender into Unreal, this requires them to be baked. I have a set-up with a separate custom bone for the sword that has a Child Of constraint to the hand. Everything ...
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How to get rid of constraints and after that move the character in pose mode?

I have 2 models which are fully rigged and I have already finished the animation. The little alien has constraints on feet and hands in order to have the right animation. My goal is to get rid of the ...
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2answers
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Aligning\snapping something to the world\global axis?

In Blender, is there any way of automatically aligning something to the global axis, automatically snapping it to it, or restricting movement to it? I'm looking for something that's the equivalent of ...
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19 views

Floor constraint stop the bone visually but keep updating it's position

There's this weird behavior after I added a floor constraint. While it worked well visually, it didn't in the background. Even though the it blocked the bone from going beyond the plane, the mouse ...
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1answer
59 views

Clear "Child Of" Constraint but keep Location?

I want to remove a constraint but I want the object to say in the same position. If I delete the constraint the object pops back to its original position. Is there a way to do this?
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1answer
18 views

What is the way to get location of the animated object

I have an object animated using "Transform cache" constraint. It is moving around the scene, but it's world location and rotation always stays the same. I assume this happens due to some ...
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1answer
27 views

Track to object's surface

I have a camera which is following a path. This path is surrounding a "large" u-shaped object (it's not a large object, but the camera is following it closely. Think of somebody scanning a ...
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1answer
32 views

when i try to move the ik bone in the x axis the leg bone rotates suddenly

my problem is when i try to move the feet.ik in the x axis the leg bone rotates suddenly. i dont want to rotate the leg bone the way it is bending right now in the photo. Can someone help?
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2answers
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applying "clamp to" and "limit location" constrains to the same object don't work correctly

I'm trying to animate the lock mechanism. So I need each pin to follow the key relief. For this challenge, I made a curve path and give my pin "clamp to" constrain. It follows the path ...
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17 views

How to move a joint in a rig using Parenting to anything? See Image

Please help. This is to cleanup fk legs
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1answer
30 views

Apply transformations to bone after constraints

I'm trying to use Blender to create a custom emote for Sansar. I've downloaded the Sansar reference model and I have a BVH mocap file that I'm trying to apply to it. I wasn't able to figure out how to ...
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1answer
29 views

Visual Keying not Properly Recording IK When Baking Animation

While animating something recently, I've come across something I've never seen before. I had just finished the following animation, and since I had used the spring bones plugin to simulate the hat ...
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19 views

How to transfer world rotation to local axis via drivers or constraints? [duplicate]

I would like to drive/constrain a local rotation axis of an target object by using drivers or constrain modifiers. Is there a way to do this in Blender? I can copy rotation values by using a copy ...
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1answer
107 views

How to set copy rotation range of influence (min 0.499 and max 0.96) using driver [duplicate]

I want to set a min and max influence range using a driver for the copy rotation constraint. I've tinkered with the driver graph in graph editor but it's too delicate to set my specific range --...
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1answer
85 views

Creating a working cable car

I am trying to create a working cable car for an animation I am doing for school. I am new to blender and am just trying to figure things out as I go. I have attached a screenshot of the modelled ...
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1answer
51 views

Rigging a mechanical plunger: bone constraints lead to offset results

I have a model for a soccer robot which has a "leg" that can be used to shoot a ball. It is capable of shooting from a low and high position, allowing the ball to be shot through the air or ...
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1answer
25 views

Follow path object goes to infinity and wont stop

I have been struggling for the past 2 hours to make an object follow a path. The problem is that the object doesn't stop at the end of the curve (doesn't matter if I use path or Bezier) it just goes ...
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1answer
144 views

How to make rigid body constraints more realistic?

I made a cube using 10x10x10 small cubes with rigid body and connected them by rigid body constraints. Cubes and the constraints are all connected to an axis and animated to fall and crash.The ...
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9 views

Using constraints to make wheels rotate with x-axis movement not behaving as expected [duplicate]

I'm using constraints to get two wheels to rotate whenever I move them along the X axis, attached to an empty circle. Everything works as needed except when I rotate the circle away from the 0,0 point....
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21 views

Two ways of movement for the same lumbar region

I reworked the Lumbar Region of the spine to let it move like in the first .gif In addition to that I wanted to add the regular movement which comes along with the non-modified rigify rig with the rig ...
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1answer
17 views

Mantaflow doesn't interact properly with Effector (Ship) when using Copy Location

I have a ship that sails on the water. So that the ship floats correctly on the water, I tied it to a plane using a copy location, which takes the water movements with it using a shrink wrap. Now I ...
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The value range shows in property panel doesn't match that in bone constraint

I have a bone with Limit Rotation constraint. But the values show in property panel don't seem to confront to it at all: As shown, the Y constratin range is from -5...
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1answer
19 views

Shield-shaped UI that indicates the limit rotation range of a bone

I have a rigged model imported from Daz3D. When I select a bone, sometimes this shield-shaped thing with a red and a blue line shows up. It's not a custom shape of the bone: I found it's very useful,...
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25 views

Bone constraints makes the animation act like a rag doll

You can see it for example in the DualsCombo_1 animation between Frame 10 and 30. (And all other fast moving animations) i added constraints,stretch to, rotate to, etc. to simulate a muscle behavior ...
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3answers
63 views

Align a plane with a triangle of vertices

I have two objects, a cube-like object and a plane. I want to change the location/rotation of my plane so that it contains three vertices of the cube (see screenshot) Here is what I tried so far. I ...
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1answer
30 views

Smoke from ship's chimney Smoke should move with the ship

I want the smoke from the chimney to move along with the ship. With "Copy Location" and "Offset" checked, I can position it accordingly and the smoke goes with it. Now I would like ...
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1answer
9 views

Creating shapekeys for a mesh using constraints applied to a different meshes shapekeys

More or less I am trying to create shape keys for a new object that make it follow the location, rotation, and general scale of another mesh's shape keys. I am attempting to do this using constraints, ...
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27 views

Automatic vertex group assignation

I'm stuck doing an automatization script that allows me to assign a different vertex group per each constraint. Let me explain: My scene has 578 Empties with a Transformation constraint ¿Noticed I ...
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1answer
20 views

Blender copy the location of an object depending on where the object is currently located

I have positioned an object on a ship and now want the location of the object to change accordingly with the ship. When I use "Copy Location", the object is always moved to the reference ...
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22 views

How to apply transformation constraint on objects having different orientation?

I want to rotate wheel having its own custom orientation. When I apply transformation constraint, that wheel rotates according to global orientation but I want it in custom. Can anyone help? Thanks
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28 views

Where is Offset option in Copy Rotation in Blender 2.92

I am watching tutorial and he checks Offset option in copy rotation so he can independently rotate that bone separate from Control bone, but there is no option in Blender 2.92
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21 views

Is it possible to add boid behavior to a Geometry Node point distribution?

Specifically, I would like to know what the vector is to the closest other point created in geometry nodes. I created them with the standard Point Distribute. This is basically Boid behavior, where ...
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1answer
42 views

Gear motor fine until it touches other gear

I'm trying to create a planetary gear system, following the tutorial on YouTube, following everything to a tee. I have finished making the sun, planet, and ring gear, yet once the sun moves and ...
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1answer
45 views

How can I apply constraints in pose mode?

I have a simple hinge joint for a primitive knee. I have the upper leg parented to one bone, and the lower leg parented to its child bone. The joint where these two bones connect should only ever ...
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Loop through a collection of bezierCircle [Python]

I have this code: ...
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32 views

Bake Action causes Animation to disappear

I am trying to bake the global translation and rotation of this bone that I have parented to the foot of this character that has motion capture animation on it. I want to bake the values so that I ...
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1answer
21 views

How do I keyframe transform and rotation values whilst moving and object on a path using 'Follow path' contraint

thank you in advance I've been banging my head for the last week trying to solve this issue. I need to export my files in a specific way and require my NLA animations made a specific way as im using ...

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