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Another way to organize your scene is to organize it into layers. Now, Blender has a Layers Panel that's at the bottom of every 3D Viewport, and we have a total of 20 layers. So we have groups of 5 times 4 to make a total of 20 layers. In this scene I've actually added those objects into a couple of different layers, and if we start clicking these buttons here, we can see what layers are active.
So if I click on this button here, you can see that the first layer contains the Furniture, the Chairs, and the Tables. This second layer contains the accessories, in other words, the Bowl of fruit, and the third layer contains the Floor. Now, if I want to turn all the layers on, all I have to do is hold down the Shift key while selecting them. Now, notice how the layers actually are dark when they are active.
If they're inactive, they turn gray. Now, one of these layers actually has an orange dot in it, and that's because that's the layer with the active objects. So if I were to select the Floor, the Layer 3 shows up. If I were to right select the Bowl, Layer 2 shows up. If I click on a piece of Furniture, then Layer 1 shows up. So those are some of the basics of how to look at layers. Let's show you a little bit about how to create layers.
So I am going to go ahead and do a File>New, and we basically just have a Cube in the scene. Now, in this case when you first create a brand new scene, it only has one layer, as you can see here. Now, if I click on the second layer, you'll see that, well, there is nothing in any of these additional layers. I am actually going to go ahead and click on Layer 2 and add in a UV Sphere, and I am going to move this over a little bit.
Now, as you can see, now we have two active layers; I have the layer with my Cube, as well as with my Lights and my Camera, and I have the layer with the Sphere. Now, if I want I can Shift+Select and show both of those layers. Now, if I click on the layer with the Cube and add in another object, let's go ahead and add in a Torus and move that over, that object shows up in the layer that's active.
So I've got Layer 1 was active when I created that Torus. Now Layer 2 is still just the Sphere. Now, if I want to move that Torus over to Layer 2, I can do that. So I just need to make sure that I highlight that, and I can do it in one of two ways. One is to go into the Object Menu, and there's an option here called Move to Layer, and the hotkey for that is M. So let's just go ahead and hit M, and you'll see that I get an option here that tells me which layer I can put it in.
So if I want to I can click on Layer 2 and now that object is in Layer 2. So when I click on Layer 2, now I have those two objects. Now, objects can also exist in multiple layers. So if I were to select the Torus again and hit M, all I would have to do is hit Shift and select both of these layers, and now the Torus is in two layers.
So when I select this layer, Layer 1, it's in this layer, and when I select Layer 2, it's also in that layer. So layers are a really handy way to hide and show objects and also restrict portions of your scene, so that way you can work more efficiently. One common way to use layers is to put your Lights and your Cameras in separate layers, so that way you can hide them if you want. Another way to use layers is to put the background objects in a separate layer.
And I am sure as you start creating more complex scenes, you'll find plenty of uses for layering.
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