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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16 views

Copy pasting between two scenes and my objects show up in different cordinates [closed]

I have two scenes identical - I want to copy some objects from Scene 1 to Scene 2, usually this works with no problem and they show up at the same spot, now whenever i paste the objects they show up ...
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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
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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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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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39 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
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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
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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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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
15 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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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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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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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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39 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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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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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
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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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1answer
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Objects intersecting in render but not in viewport

So I modelled this boat and made it move across the lake using a shrinkwrap modifier and copylocation constraint(Like Chris said in this question ) Now the problem is that whenever I view this boat in ...
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How to use dynamic paint with constrained objects

I need to apply dynamic paint to an object (say OB1) that is constrained to another (OB2)! The problem is that although OB1 is moving by changing OB2 location, its "real" position is fixed ...
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Follow path constraint - object goes back and forth when speeding

I attached a sphere to a circle curve with the follow path constraint, but when i try to speed up and slow down the object with the "Path Animation > Frame" value with keyframes the ...
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1answer
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How to make a rig like curve handle with control points

With curves, you get good control points that move with the middle handle. I'd like to do that with bones but I'm experiencing problems with dependency cycles. How am I supposed to do that? i want to ...
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how to parent a rigged grop of object using constraints to another object without messing up the constraint

i just rigged a fighter jet but forgot to add the engine nozzle to the rig or the empty . so here are the 2 different rigged objects i want to make them move together so i selected the entire engine ...
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1answer
14 views

Stretch To constraint with uniform scaling instead of stretching/deforming

This is not duplicate of questions where OP wants to know how to use stretch to as in these questions the OP is okay with the stretching behaviour that the constraint gives. I have two empties from ...
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1answer
16 views

animate part of the way along Follow Path

I want to have an object Follow a Path until some percent of the path and then stop Follow Path: I can set the frames to animate the path: and the offset time to start the animation: But I don't ...
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Problem with“ clamp to ”where object is stuck when the constraints is not set as cyclic

was just applying clamp to constraint to my model [ basically a retractable air to air refueling probe of a fighter jet , note i hid the other parts of the jet to make it easier for you to view . I ...
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How to copy constraint to other object and keep the drivers?

I add a constraint to an object, and in the parameter i attach drivers. Now when i copy/paste this constraint to other objects, all the drivers are gone. The drivers are converted automatically into ...
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How to link action constraint to shape keys animation?

I have shape keys animation and i want to control it using action constraint. For example i want to control the deformation of monkey's face (which is done using shape keys) by using the position of a ...
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1answer
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Limit Location Constraint on Armature Breaks in a Loop Animation

I'm having a little issue with this rig I have set up. It's a pumpjack rig with a wheel on the other side. The gears are driven by a driver but that has no relation to the pump itself. The armature ...
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2D Platform game with a character that turns 180 degrees to go in the opposite direction

I am wanting to show my class how to make a simple 2D platform game. I put an image of a running book on both sides of a cube so, depending on which way it was turned, it would look like it's running ...
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2answers
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Constraint to move objects along Local z-axis while following bone?

I am trying to rig a series of valves which are pushed down by a lever: Currently, I have a Copy Location object constraint on the valves which copies the z-location of the bones at the end of their ...
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1answer
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How to copy the specific location and rotation of a falling down object with cloth physics?

I intended to use cloth physics to make a bag like this: the bag and the shpere has cloth and collsion physics modifier, the shpere with internal springs on, and it worked well in the testing file. ...
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1answer
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Update target with new same name object+suffix added

I have a script that automatically adds an empty as a target of a constrain which works as it should be, but when I run again the script it adds another empty with the suffix .001 and what I would ...
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1answer
14 views

Track simulation jittering & Instability

I will start by posting a video illustrating the issue: Track issue To put the issue in words; the tracks will randomly jitter along their respective axis. This is not limited to the one area shown in ...
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1answer
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IK constraint not working

This is the robot rig that I am working on. I duplicated the left leg to make an FK IK switch. But the IK is not working on the "Third leg part L.002". I tried to move the IK control bone, ...
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Armature with multiple root pivots

I am currently trying to rig a skateboard as realistically as possible. I want to be able to move and rotate everything with the Root bone (the object / "skateboard" in the picture is ...
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23 views

Floor limit whith IK chain

I'm currently building a simple rig for a mech arm. I try to set up some constraints in my IK chain so the arm would close on itself at the blue line. So far I manage to set up BONE in the Ik chain to ...
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How to constrain a rig for a bi-directional robot arm

I created a simple SCARA robot in CAD, pulled it into Blender, rigged it, and animated it. Origins are set, bones are constrained and work correctly, (including bone rotation constraints on the joints ...
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How to stretch out animation time for a volume object

Blender volumes are great; particularly when I've got a scene (as I do right now) with a number of fluid effects going on. I can simply save them into a directory as a bunch of OpenVDB files and ...
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2answers
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Copy rotation does not always rotates correctly

I have created an ostrich and this is the armature. The feather bones, 5 left, 5 right and one centre are controlled by an IK bone. Bone naming is done view from the back of the ostrich, so left and ...
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31 views

export bone constraints

Good day. In Maya fbx exported there is function export constraint so I can use them in Unity, When I export armature with contraint from Blender they don't export and I don't see any option on how to ...
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31 views

why dosen't the motor constraint work properly?

I made a simple car with physics and rigid body constraints. The car can go downhill, but I wanted it to go uphill. so I added a motor constraint with an angular velocity of an inpulse of 10 and a max ...
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Copy constraints to multiple objects INCLUDING animation / influence

I want to copy object constraints (e.g. child of) to multiple objects. I am aware of the Object > Constraints > Copy Constraints to Selected Objects function and the copy addon. However, it ...
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Limit Rotation weird jumps min to max and max to min

YouTube video of the problem I set a Limit Rotation, but when I rotate wrist then the wrist jumps from min to max and also from max to min. How do I make that when I rotate the wrist above the max so ...
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1answer
27 views

Moving a parent object is not influencing child objects at all

I have a large architecture project that I've been working on since before 2.79. At some point post-upgrade (to 2.8), parent objects (created with ctrl + p) stopped influencing their children. I can ...
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How to use a constraint to make a roller paint animation?

:) I found a tutorial here on Youtube that shows how to make a painting animation with Dynamic Paint. It works, but I can't figure out why the roller stops rotating after a while. You can download the ...
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27 views

Rigid bodies being affected by bone constraints

I am having and issue with rigid body physics. I have a main object that acts as a collision, and four objects around the first that have constraints that attach them to the first. I also have an ...
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1answer
32 views

Why copy rotation constraint does not register actual rotation?

I have an example, where I need eyelids of the character to follow eye movement. Eyelids movement is based on blendshapes driven by X and Z axis of an eyebone. Whenever I set target bone for eyes to ...
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1answer
120 views

How do you convert a rotation to use as a value between 0 and 1?

Basically I have a bone that rotates, and I want to use it's rotation to drive an Influence of another bone that ranges between 0 and 1... For example: If the bone rotates 0 degrees, the value is 0.0 ...
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1answer
25 views

How to only show the faces of an object based on relation to another object

I'd like to only show the faces of an object that another object can "see". So far I've been able to achieve this by putting a bounding box around the object I wan't to be partially seen and ...
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1answer
54 views

How can I automatically move a robot's body to the correct height based on its leg(s) rotation?

When I rotate the leg the body or the luggage bag should come down slowly. Which constraint or any other way will achieve this? video Blend File

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