Questions tagged [collections]

For questions relating the to the new 2.8 "layer" system and collection management

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13 views

Create Mesh op in a certain collection?

If you have a python script in Blender 2.8 that uses a primitive mesh generator like bpy.ops.mesh.primitive_ico_sphere_add(collection="???") It will be created in the active selected (in outliner) ...
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26 views

Object Organization - Hierarchies, collections, groups, empties?

If I want to organize my sub-components into a convenient hierarchy in 2.8, what is the best approach? Should I use collections, groups, empties, or simple parenting? First, I haven't been able to ...
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8 views

Preserve background images when isolating object

In Blender 2.79 background images would remain visible when isolating a single object. Now that they are technically objects themselves, they also disappear when isolating a specific object or hiding ...
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13 views

How to animate collections in 2.8

I'm using the cell fracture addon and I want to have the fracture appear on a certain frame, how would you do that in 2.8?
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1answer
21 views

Indirect Only filter for Collections not supported in EEVEE?

does anyone know if the indirect only button is unsupported in EEVEE? It works perfect in Cycles to bypass rendering a collection except for reflections, but in EEVEE it appears to do nothing. Thanks!...
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32 views

Can't select or interact with downloaded objects unless in edit mode

need some help. I downloaded this free car model, and everything worked great until i tried to move it around. It is made of many parts so I selected everything with A and tried to rotate the whole ...
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7 views

Collection instances are just like prefabs?

I wonder why unity can load for instance 100 000 objects ( prefabs) and handle them inside the viewport quite well, while blender struggles to even move just 10 000. Would it be easier for Eevee if ...
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1answer
38 views

Hi! Is there the way to select all the objects inside collection using shortcut (Blender 2.8)?

Is there the way to select all the objects inside collection using shortcut (Blender 2.8)?
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16 views

How do I paint all of my objects in collection to different colors via python?

I want every object in my collection to have different color. How do I make it via python scripting?
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17 views

Where can I find my collections? (Blender 2.8) [duplicate]

I just created a collection like a group in Blender 2.79. So I pressed Ctrl+G. I named my new collection. After that there is no sign of that collection. The outliner doesn't show it. There is now "...
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56 views

Blender 2.8 How do I set object/collection active and apply my script for each of collection's objects in via python?

I have a collection of leaves in my scene which calls Lines: Here's a little snippet that creates another leaf from leaf and randomize it: ...
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29 views

Is this expected behaviour for 'remove from all unlinked collections'?

I executed 'remove from all unlinked collections' command on a cube and the active object disappeared in viewport and I found it in orphan data. I tried to move the orphan object to scene collection ...
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1answer
23 views

How can I use 'create new collection' command?

I create a collection with 'create new collection' command but the new collection did not appear in scene collection. And I found it in 'orphan data'. I tried to move the new collection(test) to scene ...
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1answer
18 views

What's the difference between 'unlink' and 'remove' from collection?

I did 'unlink' and 'remove' respectively, but really don't know how the two are different. What's the difference between them?
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1answer
20 views

Is it possible to create a particle system which uses collection of objects or merge a collection into 1 object?

I have a collection which contains 5 leaf objects and 1 carrot object, is it possible to merge it in one object or just use a collection for a particle system?
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1answer
40 views

Remove/Add Collections per render layer with Eevee

I was able to choose which layer was rendered when using 2.79 Now that things are called collections, and layers are... layers. I can't exclude collections from certain renders while at the same time ...
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1answer
65 views

Python Script to import obj and create collections [duplicate]

I’m having trouble updating a script that worked in Blender 2.7 over to 2.8. Since Scene Layers have been changed over to Collections. The script takes all the OBJ files from a location and brings ...
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1answer
60 views

How to obtain the parent of a collection using Python

The Blender 2.8 Python API allows me to retrieve all child collections of a collection using its children property. Given the following collection hierarchy ...
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17 views

Baking using Collection Instances (or Object face duplication) does not work

I'm setting up a 'Tiled texture studio', to do so I have set up a collection at 0,0,0 with numerous objects. I then create Collection instances at equal x and y offsets around the tile area. When I ...
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1answer
25 views

Link collection from external .blend in 2.8 via python

I tried to recreate the File->Link...->somefile.blend->Collection->Collection linking mechanism in Blender 2.8 (Release canditate) in a script. Unfortunatley my linking code does not behave like when ...
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80 views

Change Object Index of Objects in a Collection Instance

If you make instanced copies of a bunch of objects (alt+D), then it is possible to give them different Object Indices from their originals. This is useful if you are using Object Index as a mix factor ...
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26 views

How can I add new collection in Blender 2.8 and disable it for all view layers?

I have few view layers in blender. Let's say MASTER LAYER, LAYER1, LAYER2, LAYER3. So each time I add a new collection on any of these layers it is available for rendering by default on all layers. ...
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1answer
44 views

Transfer selected objects to a collection doesn't work

The M button does not work and does not allow me to transfer the selected objects to the collection If several objects are selected via lasso or box and not one object at a time using the Shift key, ...
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12 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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1answer
43 views

Groups not being converted to Collections

When I open pre-2.8 files in 2.8 the layers are being converted to collections, but the groups are not. Is there a way for 2.8 to convert groups from older files to Collections?
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18 views

Can I get particle systems to render Group/Collection Instances inside a Group/Collection?

I was making some object groups for greeble. When I go to set up my particle to render randomly choosen objects in the Greeble collection, all of the instances only render their empties. Similarly, ...
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2answers
107 views

How to get the list of all Collections and their Object? (api)

I have a scene with 2 collections of 4 objects each. I am trying to get all collection names and their objects' names. Unfortunately, info panel nor python hints have not been helpful to find the ...
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1answer
43 views

Change origin of collections

I am trying to animate a fbx imported file originally made in solidworks, since it was made in solidworks all the parts are in different layers. In order to change the rotation pivot I need to change ...
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19 views

2.8 switching mesh on proxy

I have a blend file with one collection which contains an armature which has 2 different meshes. I'd like to swap between these 2 meshes while this collection is linked into another blend file with a ...
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49 views

orphaned data with collections(blender 2.8 beta)

Has anyone come across a similar situation where creating a collection using ctrl-g (call it 'Collection 2') then removing that object's 'Collection 1' now results in that object needing to be ...
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42 views

Meaning of selected object outline in 3D view

I was trying new Collections feature in Blender 2.8 and somehow can't get consistent understanding what do outline colors of selected objects mean. Here is my scene setup: created three "asset" ...
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2answers
93 views

How can I exclude a collection from rendering with Python?

Can anybody help me write a script that excludes certain collections (for rendering)? In the outliner the tooltip says: Layer.Collection.exclude and ...
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0answers
11 views

Adding collections the external .blends using python

I want to save a nuber of collections of my project file into a new external .blend file using python. ...
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23 views

Link collection instance from external file using python

I am trying to write a simple addon that converts highpoly objects to a vertex cloud representation (more accurate display than bounds) using collection instances to create a kind of "proxy" version ...
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1answer
104 views

How to set active 'Scene Collection'

How to set active 'Scene Collection'? bpy.context.view_layer.active_layer_collection = bpy.data.collections['Master Collection'] not working.
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34 views

Way to get UIList for objects in an collection (2.8)

I make the Uilist example and i created Uilist for material inside an object: ...
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86 views

How to hide/show Collections levels with python?

Hello in this code below i create a lot of collection and add backups inside of them, its kind of a cool withing the file backup system ...
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1answer
56 views

Select object from within collection

Can anyone tell me how I can choose an arbitrary object from within a collection? My script leaves me with nothing active (or selected) at one point, but I need something to be active. I have the ...
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2answers
236 views

disable all collections with python in blender 2.8

I am trying to disable all collections in the render with python in Blender 2.8 It works on top-level collections with the code below, but ignores nested collections. ...
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21 views

Attaching freestyle styles to a list of collections

I have a simple project with multiple collections. I would like to use three different freestyle styles applied to different collections. Say, I have collections numbered from $1$ through $10$ and ...
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1answer
265 views

Portal effect in EEVEE?

So I'm trying to make a portal effect for an animation, and unfortunately the only way i know of for doing this effect is by using layers and the compositor in 2.79, which were replaced with the ...
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125 views

How to Change the Origin when moving a Collection Instance

I have created an Collection Instance, when I try to move it, the origin(to snap at vertices or edges) is far away from the object, I want to set it. In the image, the Collection Instance is selected,...
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2answers
201 views

How can I converted a linked collection to a local collection?

I would like to switch some materials of my linked collection, but how can I instanciate it so I can edit those materials? Will the meshes remain linked? Thanks!
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3answers
326 views

2.8 - Is it possible to assign (override) a material to a whole collection?

I have a collection that contains linked assets. I would like to override their materials and give them a unique material. Is it possible to assign a material to a whole collection, and how ? Thanks !...
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16 views

custom axis/pivot orientation doesn't work

Pls watch my attachment video : https://youtu.be/M_2I7sYkRWk I just want to scale the object using my custom orientation ( to scale one direction along the arrow i draw with annotation). The object ...
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79 views

Blender 2.8 Link Collection Problem

I have a simple test character that has geometry, an armature, some circles to drive the bones all inside a custom collection. When I link to the custom collection from within another file, the ...
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2answers
137 views

Python: How to select the collection an object belongs to

I can access objects belonging to a collection like so: objects_in_collection = bpy.data.collections["My_Collection"].objects How can I access the collection a ...
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153 views

blender 2.8 : temporarily show all visible objects in the scene

When dealing with collection, the object in the 3d viewport will be visible depends on current selected view layer. Some objects won't be visible as they have been excluded from current view layer. ...
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1answer
295 views

In 3d viewport , how can i add object to new collection without it's being unlinked from current collection?

I want to do 'add' the selected object to new collection while also keep it still linked to current collection so it will be part of 2 or more collections at the same time? I can do this using ...
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15 views

Won't open blend file with links to other blend files

I have a master blend file which links to some other blend files. I did some cleanup work in one of the linked blend files, and tidied up some names, including changing the collection name. When I ...