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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.

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25 views

TrackTo Constraint

I tracked the eyes of my character to a separate bone and parented the bone to the head bone. I want to be able to use that bone to control the rotation of my character. When I rotate the head bone (...
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13 views

How to parent objects imported from another application without offsetting issues?

I imported a mesh from Maya into blender. After doing the following: Removing all parent relations from the mesh Setting the mesh's origin to geometry Resetting all transformation data to deltas ...
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13 views

How to keep shoulder pointed at bone

How do i keep the arm inside the mesh wile still keeping it separate as well as pointing at the body?
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13 views

“Selection to Cursor” Why it's not working nomally

I made two UV Spheres like this make Constraint-ChildOf insert rotation keyframe of target after few frame, I rotate target sphere and insert keyframe And then, when I try to "Selection to Cursor" ...
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2answers
49 views

How to get a hover craft effect (Object over Landscape)?

I have made a hilly landscape using the Landscape addon in blender 2.8. I have an object which I want to animate across the landscape by following the surface contours and maintaining a small distance,...
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11 views

How to I bake IK targets into an animation?

I'm new to Blender, I have a rigged character in Blender. He is riding a ATV(quad). His hand bones have IK constraints with targets (empties) positioned at each handlebar. Everything is working as ...
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1answer
31 views

Delayed copy rotation…?

I'm trying to make a constraint or some kind of system in 2.80, where i have a vehicle, driving on a path (follow path constraint, also rotating, but only on z axis) and a third person camera, ...
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10 views

How can I convert these paths and constrained empties into animations?

I have a blend file with empties and boxes swirling about, following animated paths (beziers). I would like to convert these objects into a single animation that I could import into Unity, then ...
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18 views

My bone keeps on rotating. Need a little help with constraints

I'm trying to figure out how to rotate a rectangle box, and rotate all the parent bones along with the box so it can rotate a second time around another edge, and a third, and so on. I tried to ...
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31 views

Blender 2.8: Problem with Mechanics/Constraints/

The attached image shows a simplified excerpt of a bigger mechanical part. The sphere stands for a bone of an armature some kind of mechanical setup. The lower cylinder is along the X-Axis. The bigger ...
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1answer
47 views

Clamping camera to path, existing keyframe positions are thrown out when path is extended?

I'm using a Clamp constraint to animate a camera along a path for a long, continuous fly-by shot with pauses and target changes along the way. I'm keyframing on the transform of the camera dolly, but ...
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1answer
28 views

How to make the camera rotate while tracking the target

I need to make an animation with a camera around the target At the same time The camera Angle needs to be tilted But I couldn't rotate the camera when I tried to use “follow path” and “track to” it ...
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2answers
41 views

Move objetct perpendicular to the viewport

The easiest way to move an object (G key) moves it parallel to the viewport. BUT, is there any way to move it PERPENDICULAR to the viewport? That is, in depth but not just constrained to the XYZ ...
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1answer
8 views

Why parented to bone object has offset in local space?

Sphere empty is a bone's Сhild (origin is not cleared for it). Cube empty has CopyLocation constraint set to local space of Sphere empty. Now Cube has some offset, it is equal to bone's length. But ...
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1answer
69 views

How to rig a plate so that it points to a target, with off-centre tilt, and constraints on elongation and tilt

a question from someone who has never done rigging before. I need to make a plate (in my example: a cylinder) follow a target (a empty). But with some constraints: There are three degrees of freedom:...
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14 views

Armature Rig: Copy y-location while x-location is on circle

I'm pretty new to rigging and blender in generell, so bare with me. What i want to do is move the green bone at the courser on the y-axis. Then the 2 yellow bones beneath should move the same y-...
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17 views

Point particles to empty

I am making a colosseum with a crowd inside. For the crowd I am using an emitter and I have a few very low poly people objects in a collection. The problem I am having, is that they are all facing ...
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20 views

Blender crashing without error message (Automatic Weights)

Trying to pose my model with Rigify and when I already make rig bones and setting parent to Automatic Weights (selecting the model and rigs) the Blender begin to process and then just quit with no ...
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27 views

Actual Constant Offset for “Follow Path” Constraint

Actually quite an easy problem, but I seem to be unable to find any solution for it. I want to move objects along curves while moving the camera on another curve pointing at the objects; for this, I'...
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1answer
21 views

Blender keeps adding “limit location” bone constraint to an entire armature?

Just move to 2.8. I am unable to add bone constraint: limit location to a bone in an armature. Everytime I try, the constraint is applied to the entire armature. What gives? Thx
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23 views

Exporting Animation with Mesh using Follow Path Constraint

new to blender, was following a video tutorial which did not show me how to export the mesh/animations, and have run into some trouble. Project is a free designed Roller Coaster, created with 5 ...
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1answer
80 views

Bone constraint rotation not working correctly

I am following a skeleton rig tutorial on youtube step by step and despite having the exact same setup, my armature behaves incorrectly. https://youtu.be/jp_SqjB0468?t=920 at minute 15:40. This is the ...
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19 views

Constraint grease pencil strokes

I am a scholar of using blender. I have a situation-i'am using a grease pencil on surface and alembic sequence. So here is the question. Can i constraint drawn strokes to mesh for several frames and ...
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1answer
55 views

How to keyframe child of constraint in and out

I am dribbling a soccer ball using child of constraint. In the image I would like to keyframe the ball where the arrow in drawn but when I try to keyframe it it still follows the child path, How do I ...
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1answer
38 views

Switch child constraints

I am dribbling a soccer ball. I have set a child constraint to the ball for the left foot. Works great, Mid motion the player changes to his right foot, How do I ensure I get the same effect with the ...
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326 views

Constraints tool for Blender 2.8

I am new in blender. Now I watch tutorials and try to make it. Have problem with making this tutorial (He create a glass and destroy it with the bullet). To complete it I have to use the "Bullet ...
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1answer
18 views

Is it possible to make an object with the follow path constraint stay at the end of the path even if the path moves?

I tried setting it up so that the object is parented to the path, but that didn't work. It still goes off in a random direction when the path moves.
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20 views

Constrain Minimum Z location on object A based on x Rotation of object B

I have an object A that is constrained to only move up and down the Z axis. I want the minimum Z transform value to stop when the rotation of object B is 90 degrees. Object B points to the origin of ...
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1answer
18 views

Follow path breaks up parent-child positions

I have a starship that I would like to go along a nurbs path. The starship is constituted by several objects (hull, lights, etc.) where the hull is set as the parent for the remaining parts so that I ...
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1answer
33 views

Troubles with “Stretch To” constraint

Still feels a newbie with blender, so I have also dummy question. But while looking for the solutions, it looks that I'm not the only one. I'm trying to follow Ray Mairlot's You tube: Blender Tutorial:...
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5 views

RigidBodyConstraints flashing when start animation (left connected parts randomly) Blender 2.8

I use RigidBodyConstraints and fantastic... but.. when generate animation in the first time work like a charm. When play from cache (space) then flashing and left a connected parts randomly. I can't ...
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0answers
27 views

Camera to follow path of curve starting from exactly where it is currently

I need my camera to follow the path of a circle curve. However whenever I do this it creates an offset because of the cameras location as I understand it. When I go to reset the cameras location it is ...
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2answers
36 views

How can I find a mesh's position when affected by a constraint?

So basically, I have a mesh that is moving via a constraint. However, because it is a constraint movement, I can't find the position of the mesh. So, is there any way I can find the current position ...
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23 views

Follow path parent not working

I have an object. Ive created a path. I select both. Right click and choose "follow path". Nothing happens. Ive used this countless times. Before but for some reason its not working now. Ive tried ...
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1answer
31 views

Constraints for attaching planar object to multiple poles

I have flat sheet of solid material (e.g. 1" thick plywood) whose corners I want to attach to four poles. The poles can move independently of each other in the XY plane. When the poles move, I want to ...
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22 views

rigging mechanicle tentacle

I modelled the tentacle you see here: -One big module should only move as a whole under each Gland is a ball every ball is connected trough a screw to a Connection ring (even not shown) ball, module ...
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1answer
37 views

How to scale child object when only part of the parent object is scaled

I am trying to make child cube scale properly when only inner surface of the parent object is scaled. It's better to show an image: I can easily make it so, that if whole parent object is scaled, ...
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89 views

Copy rotation constraint and simulation not working in blender 2.8 final render

I made a character animation with a cloth simulation in Blender 2.79. Among others there is a copy rotation constraint on the pelvis bone that copies from upperleg01. I need that to achieve a ...
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0answers
57 views

Is there a way to enable the Child Of constraint without offset?

Oftentimes I encounter a situation where I need to disable the Child of Constraint, adjust position of the 'parent' without moving its 'child' and then enable the constraint back in such way that the ...
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13 views

I can't ignore constraints when duplicating or adding a modifier to a group/collection

I am trying to make an array of a collection/group, each object in the group has a constraint applied to it. I want to apply an array modifier to the collection/group. the issue I am am having is that ...
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3answers
42 views

Blender constraint, parent issue

I'm new to blender it's really amazing. I'm animating some mechanical engineering parts. I want to create a small 2 finger gripper with a transform constraint so that when i move 1 object the other ...
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2answers
147 views

How to properly make an object to follow a path?

a have a considerably simple path and an object to follow that path. Following the basic procedures: Create a path and object, Add Follow Path constraint to the object and select path to follow, ...
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1answer
55 views

How do I limit the movement of an object to two directions?

I'm trying to get a 'rigged' mechanical arm to move in 2 certain directions: Some other objects in my Blend-file are able to go in a certain direction using transform constraints. But this won't ...
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0answers
19 views

Floor constraint makes armature move floor

I have a model with an armature, with IK legs, that I want to animate. Before I begin animating, I would first like to constrain it to a rooms boundaries, specifically the floor. When I set up the "...
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1answer
37 views

How to create a pole to follow and empty with arbitrary origin

I want my "pole" follow point B from point A with no stretching, this way Intead of this I get this: How can I follow the point B using the pole, keeping the point A as origin, and keeping the ...
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0answers
46 views

Use multiple Child Of constraints in one bone and animation

I have a model and rigged this model then i added 2 Child Of constraints to one of the bones and in timeline i want to change parent but when i do this , bone and attached mesh go to other place and ...
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1answer
30 views

Animating constrained/child objects

What im trying to do is to animate hands with pistol. When i animate it is usefull to have pistol connected to hand when i move it around. But in actual game i'll have pistol as separate object, NOT ...
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1answer
21 views

Adapt Limit Location Constraint to Bounds of Mesh Object

I recently asked a question here looking for advice on constraining a bone to within the internal space of a custom mesh object, using the default bone constraints available in Blender. I've been ...
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1answer
73 views

Limit Possible Bone Location Within Custom Object

I would like to be able to constrain the possible X,Y and Z locations of an armature bone to within the 3D space inside a specified mesh object, such as a cube or sphere (and eventually a custom shape)...
2
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1answer
116 views

Make a Soft-Body to follow path

I am making a small tetris animation but the problem is that the blocks are not falling as they should. Sometimes they collide with the container walls and sometimes they do not land on the position ...