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Questions tagged [collections]

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

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1answer
9 views

How to check if an object has a particle system or other modifiers

I have a few objects in my scene and I sort them in collections based on the some parameters of the applied particle systems. No problems here. I would also like to check if an object has a particle ...
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3answers
101 views

Change between layers using shortcut in blender 2.8

I've recently update blender to 2.8 and now I'm looking for a shortcut to change quicly between layers (or collection views). Something like 2.79 had: Shortcut to switch between layers? I use to make ...
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0answers
22 views

How to make a Collection in your scene active via python command(Blender 2.8)?

Thank you so much for the help so far. I'm trying to figure out how to make a collection active via script so that I can apply a series of commands to that collection. Can't seem to find any ...
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9 views

Cell fracture question

Once I generate a fracture, I want the collection that the fracture is on. I want it to disappear and reappear depending on the timeline. How would I animate that in blender 2.8?
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0answers
30 views

How to make objects ignore certain lights in blender 2.8?

In Blender 2.8 in Cycles, how can you make an object ignore certain lights? Lets say I have a cube in collectionsCube and a bunch of lights in collectionsLights, how do I stop collectionLights from ...
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0answers
26 views

Is anybody else accidentally hiding collections in blender 2.8? [duplicate]

often i forget i'm not in edit mode and i will press 1, 2, or 3. If you're in object mode it will hide all the collections i'm working with. Alt+H doesn't seem to unhide them and i have to manually ...
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0answers
9 views

Cant see my other collections/layers [duplicate]

So today I finally installed blender 2.8, and when I tried to open one of my old 2.79 works only the model that was on the 2nd layer (now collection) is selectable, the other ones are even greyed out....
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0answers
13 views

Setting to have added object appear in scene collection root instead of a group inside?

I am still getting used to the new scene collection feature. It's great but there's one behaviour that freaks me out. Whenever I add a new meshes it appears in one ...
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0answers
6 views

Leaves particle system won't show inside tree particle system

So I've made a landscape filled with trees that have been put in a particle system. The trees are in a collection. I also have leaves on the trees inside the collection, but the leaves are created ...
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1answer
47 views

Removing all meshes from a collection with Python

I have 2 collections in a scene (collection, items) both with objects (meshes, camera, lights). How can I select all objecst of type mesh from items and delete them? ...
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0answers
11 views

Blender 2.80 Collection Selection

I notice that this question was closed as off topic 8 months ago, but I see that a new version went live last week: I'm a (delighted) new Blender user of only 3 days, so please let me ask again: Is ...
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0answers
11 views

Not able to open child objects when Parent and Child Objects are moved to a new collection v2.8

I have a number of (growing) objects in my model, and so I'm now trying to organize them into separate Collections. The problem is that when I move a parent object and its related child objects into ...
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1answer
13 views

Changing value of shapekeys keyblocks with a specific name for all objects inside a Blender collection

This is my code right now: import bpy for k in bpy.data.shape_keys.keys() : bpy.data.shape_keys[k].key_blocks["Opened"].value = 0 It change the value of all ...
2
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1answer
185 views

Can elements of a collection be moved up or down?

Let’s say I want the NM.Top.Soil layer to be above Far.Mountain. I don’t see the way
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1answer
19 views

Deleting an object part of a collection does not remove it from the collection

Video to the question: https://youtu.be/kgvwxt84Rkg After deleting an object which is part of a collection it seems the collection still contains the deleted object (which i did not expect). ...
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2answers
45 views

How can I quickly find the collection an object belongs to?

I'm building a complex model that has many collections. Sometimes I add a new mesh to my model and it gets attached to the last collection I was working with. I need to move it to the appropriate ...
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0answers
26 views

Blender Python: Access Selected Collections?

How would I go about accessing the list of selected collections? It seems as though the selection state of collections is something specific to the Outliner? But I can't seem to find anything in the ...
2
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1answer
80 views

How to show collections in blender 2.8

I was creating a project in blender 2.8. I unintentionally pressed the 1 button, and now only one of the objects (each object is inside a collection) appears on the screen. All other objects are ...
2
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0answers
62 views

In blender 2.8 how do I make a scene-local instance of a collection after creating a linked scene?

I first discovered some workflow shortcomings of blender 2.8 when I asked " In blender 2.8 how do you make a local instance of an object in use by multiple scenes? " Now that I understand collections ...
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1answer
41 views

Animate collection instance (material) independently?

I have an object collection (let's call it a Red Cube for simplicity) which has a "blinking" animation (via emission material + keyframed mix shader). Now, I want to create several instances of that ...
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0answers
52 views

Blender 2.81: How do I mirror a collection of objects, instead of a single object, across the center pivot?

So Object Modifiers only work on objects, or is there some way to make them apply to a Collection as well?
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0answers
18 views

Collection is not visible in the outliner [duplicate]

I noted that if you create collection with Object > Collection > Create New Collection (CTRL+G). It create collection place object, but Collection is not visible in the View Layer. It looks that ...
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0answers
28 views

How do I list collections from a specific scene?

When I list collections from blender I always get collections only from first scene. How to get collections from specific scene. I use this code: ...
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0answers
25 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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1answer
36 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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0answers
18 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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0answers
17 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
48 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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1answer
52 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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0answers
17 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 ...
1
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1answer
104 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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0answers
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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0answers
21 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 "...
0
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1answer
111 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: ...
0
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1answer
31 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 ...
2
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1answer
90 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 ...
1
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1answer
26 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?
1
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1answer
24 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
177 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 ...
1
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1answer
227 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 ...
3
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1answer
111 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 ...
0
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0answers
35 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 ...
2
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2answers
78 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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0answers
105 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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0answers
32 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. ...
0
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1answer
62 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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0answers
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 ...
2
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1answer
65 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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0answers
97 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, ...
0
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2answers
441 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 ...