Questions tagged [collections]

Collections were introduced in Blender 2.8 to replace object layers and groups as a scene organization tool. Use this tag for questions about 2.8 or later Collections. Use this tag for questions about using Collections.

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0answers
38 views

Adding objects to new .blend files using python

I want to save a number of objects of my project file to a new external .blend file using python. ...
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1answer
486 views

Export FBX with full collection hierarchy

I’m trying to export to FBX, but it's only exporting the mesh and not the full heirarchy. Is this possible? Thank you…
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13 views

is there a way to relocate a linked collection that has its name changed?

I know there is a way to relocate a broken file in the outliner, But is there a simple way to relocate a collection when it has its name changed ? (file is the same but the collection has a different ...
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2answers
66 views

Need Help to recursively import RDCs from a Folder and store each element into a Collection

As written in the title and kindly need help, my script is almost ready but I have some troubles because it stores only the first element on the collection under its named from file. I'm pretty new to ...
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1answer
76 views

Removing objects from collection with script works but gives an error

I'm sorry in advance if my script looks really messy and not optimised, it's my first time using python or a dev language for that matters. I've tried to setup a script that, among other things, ...
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39 views

Is there any way to retain the name of layers from a 2.79 file when opened in 2.8+?

I have a lot of Blender files created in 2.79 which all use the Layer Manager add-on to help organize the scenes. It lets you custom name each layer. When opening these files in 2.8+, the layers are ...
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91 views

Animation Nodes - How to access individual items within instanced collections?

I have a spline with an empty following along it using a Follow Spline Action node. Then I have a mesh object with a Curve Deform modifier binding it to the spline and a Copy Location constraint to ...
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16 views

Place collection instances using an array-type UI?

Collection instances don't support modifiers, so laying out a bunch of them with an "Array" modifier doesn't seem to be possible. But I love the ease and control Arrays give me. Is there any ...
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1answer
24 views

Why Does My Collection Not Add My Cube Correctly?

I'm new to blender and I was working on something when I tried to make a collection, and I realized instead of moving my cube inside of the collection, it put one cube inside of the collection and ...
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0answers
114 views

Loading a collection with objects using bpy.data.libraries.load, to avoid using a bpy.ops operator

I want to append a collection and the objects within that collection from a blender file, using bpy.data.libraries.load. The reason to use ...
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2answers
126 views

Python script renders a collection even when excluded from view layer

I have the following code to render child collections within a collection: ...
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0answers
127 views

re-time collection instance?

I'm working on a large scale mograph project and am hoping to re-use and re-time an animated collection which includes numerous objects moving along curves via path animation and offset factor. Let's ...
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1answer
255 views

Transforming collections with animation nodes

Hello everyone and happy holidays! So I really would love to parent a collection to an empty since instancing can be so messy but what I had not considered is ... perhaps using animation nodes to ...
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3answers
316 views

How to add a mirror modifier to all objects of a certain collection?

I'd like to add a mirror modifier to each object of a certain collection. The problem is that the modifier will be only added to the last object which even gets the same modifier several times and I ...
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2answers
139 views

How to have collection where collection origin is not world origin? [duplicate]

I'm trying create a set of modular 3D pieces in one blender file that I can use to build scenes. My idea was to create a single file with the modular pieces and then create a second blender file that ...
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2answers
761 views

Blender 2.9, is there a way to select the collection in outliner when an object in that collection is selected?

I'm working on a large scene, I organized the objects in collections and I need to duplicate some of these collections and transform them, the process so far is: 1- Select object in viewport that is ...
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1answer
84 views

how to have one force field influence on 2 collection?

I am trying to make a tornado. I want to make a force field influences two different collections of particles.I have separated different force fields by collections but now I want a specific force,to ...
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1answer
657 views

Can’t move hierarchy to collection or parent in outliner

I have this one chain hierarchy in my outliner and it doesn’t move to the collection when I parent it to an object in that collection. Even if I try to move it manually it just stays there outside the ...
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1answer
101 views

Disable the collection of linked object

I created a 3d house using 2.83.7. The main component are : wall , ceiling , floor , door , window etc. So i created some collection to manage it : WALL, DOOR,FLOOR ,WINDOW etc WALL collection ...
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78 views

Move/rotate all objects contained in a collection around the space

I have modelled a car and I have arranged all differents objects parts in nested collections under a main one called "Model". Now I need to move all the car in the space I know that I can ...
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0answers
88 views

Handling a deep hierarchy of empties imported from C4D

I have a project with a lot of parts that I organized using null objects in C4D, which are interpreted as empties in Blender. It's quite a deep hierarchy, think 6000 objects with 800 null objects as &...
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48 views

When moving objects to a collection, not all selected objects are moved. Why?

I am working on a fairly large scene that has a lot of mesh data, active booleans, and mirrors. I am trying to clean up the file so it's more easy to manage. What I have been doing is moving major ...
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17 views

Why are my collection items updating together even when I want them to have different colors?

My collection items are changing colors together, even though I want them to have different colors? I've equally placed the items into different collections, yet when I change material or color for ...
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0answers
52 views

Animation nodes: multiples of a collection with animation along a curve plus lattice modifiers

I have a collection... inside that collection is a curve, and an object with two modifiers (curve, and lattice) the object runs through a simple 30 frame animation. By using animation nodes, I would ...
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1answer
5k views

How to make a lamp light only one object in the scene

I'm new to blender, and I'm a hard time understanding layers and collections. I started using Blender on 2.8, and most of the topics I read about the matter compare how it works now with how it used ...
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0answers
34 views

Incorrect instancing Collection Instance on mirrored faces

I'm modeling mechanical bird wings. The workflow until now was: Collection of feather parts Instance Collection Make a Plane, added Array -> Curve (linked to Bezier curve) -> Mirror (linked to ...
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1answer
446 views

Blender: How do I unpack a linked instance to make changes to it?

Sorry, but I'm not too sure what the process is called. I basically created an exterior scene full of linked instances by going to: File>Link>Selecting Blend File>Collections>Selecting the ...
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0answers
186 views

Move collection including invisible objects

How can I move/transform a whole collection of objects, including invisible objects? I have invisible objects to facilitate boolean modifiers. The popular advice to move a collection is to select all ...
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1answer
297 views

Arrange order of items in collection / outliner?

I’d like to manually rearrange my items within a collection but dragging doesn’t do anything ? I’ve turned off Sort Alphabetically but still no joy. Maybe this isn’t possible yet in Blender 2.9 ? I ...
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1answer
162 views

What happened to the selection and camera toggle buttons in the Scene Collection Window? [duplicate]

There used to be all these icons for each of your object in the Scene Collection window. In this picture, there's the visibility, selectability, and a computer and camera icon (not sure what those ...
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1answer
648 views

Object appears twice when linking it to a collection

I am creating a bone, and then a collection with a specific name if it does not exist, with the following function: ...
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0answers
38 views

Rename Collection on Mac OS

Maybe there's a problem with my set-up, but I can't find a way to rename collections. Left-clicking and double left-clicking just brings up the outliner context menu. Could it be a Mac OS specific ...
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1answer
436 views

Rename a Collection using Python?

Is there a way to access a collection's name other than through bpy.context so it can be renamed?
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2answers
255 views

Boolean modifier not making new faces in mesh

So I'm trying to make a smooth spherical cut in my object, I'm using the same object (icosphere) to cut both my meshes and it's worked fine on the right (hammer spike) and made new faces where it's ...
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1answer
274 views

How do you know if a collection has been clicked on by the user using Python?

How can I create a panel that allows me to add custom properties (StringProperty, BoolProperty, etc) for Collections? I want to ...
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1answer
61 views

How to find collections where an selected object is linked to?

I have an chair model and it is linked to multiple Collections. How to find what collections that the object is linked to ?
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1answer
557 views

How can I select multiple parents and their children?

I have a multi-object structure (parents and children). In the Outliner, if I select objects and move them to a collection, it will move the object but NOT the child. So I have to select the hierarchy ...
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0answers
879 views

How to export instanced collections to unity and retain the heirarchal format of an object?

I'm trying to export my scene with all its objects hierarchies into unity. However the instanced collections of the Sofa object does not have the same hierarchical format of the original collection ...
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1answer
325 views

How 'Remove Selected from Active Collection' feature works?

I thought Shift+Alt+G (Remove Selected from Active Collection) was just a change to a collection. I read the official manual and understood it. But in fact, the way this function works in the blender ...
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1answer
1k views

Export FBX while keeping Collections Hierarchy

I am looking for a way to transfer the hierarchy of the collections from Blender to Unity. In other programs, like Cinema 4D, this works without any problems. Is it possible to export a fbx-file with ...
2
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0answers
302 views

Linked Duplicates vs Collection Instances

I'm pretty new to Blender, and am trying to wrap my head around some basic workflow stuff. I have been modeling a small truck which has several reused components (tires, suspension, windshield wipers)....
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1answer
437 views

What is the Python API for moving a collection?

I created a Python like this bpy.ops.object.move_to_collection(collection_index=2, new_collection_name="Background") But this code must have a collection ...
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1answer
402 views

Recursively traversing a tree in a collection in Python [duplicate]

I have 100 collections and they form a complex tree structure. I would like to enable the Holdout and Indirect Only options for the 50 specified collections from the entire collection. In order to ...
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1answer
1k views

Selecting multiple collections & all objects inside them

It is possible to right click in the outliner on the collection > select objects. I would also like to select all my objects from another collection. Right clicking and > select objects ...
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1answer
72 views

Matching identical objects in two models

I have two separate collections: each of these collections both contain an identical object (blue cone). In reality, it is much more complex than this example and the shared object could be like in ...
2
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1answer
118 views

How to Make Copy of Scene but change some things

So I am working on a scene with objects, cameras, lights, paths, etc. My goal is to make almost a complete linked scene, however I want to change key frames, minor positional changes, swapping out ...
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1answer
56 views

How to keyframe all the objects viewport/render visibility inside the selected collection via python code?

How to keyframe all the objects viewport/render visibility inside the selected collection via python code? And there's a boolean there that you can just type "False" or "True" to ...
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2answers
2k views

How to add a Stroke Layer in a Collection

I'm creating a 2D Animation, but I'm confused on how layers and strokes work or if they're the same, so how do you make a new layer/stroke in a Collection?
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2answers
904 views

Unhide all collections hotkey?

It seems like there are only, an isolate and hide/show a single collection, hotkeys, but no show all collections hotkey. Am I missing something? I often accidentally isolate a collection and it's a ...
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1answer
258 views

link nested collections

I'm trying to get blender working with my coworker so we can both work at the same time. I've got a model that will have Lots of parts. The data is from Rhino an is very high mesh. So I want to keep ...

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