Layer Manager and Layer Concept

The layer concept helps you to easily manage complex scenes, such as imported CAD files which often contain thousands of polygon objects.

So what are layers? Layers are nothing other than groups of scene items that can be controlled together.

For example, with a single mouse click you can make all objects in a layer:

hidden in the view.
hidden from rendering.
hidden in the Object Manager, Material Manager and timeline.
locked, i.e., protected from unintentional changes.
have their Deformers switched on or off.
have their Subdivision Surfaces switched on or off.
and much more.

You can quickly and easily tell layers apart by assigning a custom color to each layer. The layer colors also appear in the Object Manager, timeline and Material Manager to indicate which scene items are on which layers.

Note Layers in Cinema 4D are global; in other words, they belong to an object, tag, shader, and so on and are not tied down to a particular manager. This allows you, for example, to hide an object in both the Object Manager and the timeline at the same time. For this reason layers are also saved in the scene file.

Note Child objects do not inherit their parent's layer properties. For example, if you hide a parent object's layer, its child objects are not affected (provided the objects are not on the same layer as the parent).

Here is the most common way to assign elements to a layer using drag-and-drop. To do this, open the Layer Manager (Main Menu: Window | Layer Manager) and create layers by double-clicking in the Layer Manager. Now select elements in the Object Manager and drag them onto a layer in the Layer Manager (step 1 in the video). Layers can as well also be dragged from the Layer Manager onto objects in the viewport or in the Object Manager (step 2, among others, in the video).
In the following video, you'll see the easiest ways to assign layers to objects:

If you hold down the Ctrl/Cmd key while dragging and dropping a layer onto an item, the layer is assigned to the item's children as well (see point 2 in the video).

You can also assign an item's layer color to child items or surrounding items by painting with the mouse button held down (see point 4 in the video).

There are various other ways in which you can assign layers. These mostly make sense when you want to assign many items to a layer:

Right-click on the selected items and choose Add To Layer.
Select the items and in the Layer Manager choose File / New Layer From Object Selection.
Almost all items have a Layer field in the Attribute Manager on their Basic Properties tab. To assign a layer, Drag & drop the layer into this field or choose the desired layer from the drop-down list.

You can make layers children of other layers via Drag & drop in the Layer Manager. This allows you to arrange layers into tree structures.

Ctrl-clicking on a property (switch) for a parent layer sets the property for the parent and its child layers. This means that with a single mouse click you can set a switch to the same status for the entire branch. Following this you can then go about adjusting the switch status individually for child layers as desired.

Now that you know how to create and assign layers, what can you do with them? This is the topic of the next section.

Layer Manager

The Layer Manager with all switches present.

The Layer Manager allows you to:

Create and delete layers and arrange them into hierarchies. As with arranging objects in the Object Manager, simply Drag & drop one layer onto another. You can also drag child layers out of the hierarchy or into other hierarchies.
Use various switches to manage the items on the layer, such as whether they are shown in the editor, managers and renderer.

To select a layer, click on its name. If you then Shift-click on another layer's name, this will select both layers and the ones between them. You can also invert the selection status using the Ctrl/Cmd key.

Layer settings of selected (or multiple) layers can also be displayed and modified in the Attribute Manager (which also has a special Layer mode). In conjunction with the Take function, Takes can be assigned to Cinema 4D elements on different layers.

Layers Example

In this example, all items that are not geometry (such as lights, cameras and backgrounds) have been assigned their own layers, which in turn have been placed inside a Scene layer. Likewise, the geometry has been split up into various layers, which in turn are inside a Geometry layer. Here, all geometry is hidden in the view except the walls. You can hide or show various parts of the scene in seconds using a just few mouse clicks.

The benefit of using layers becomes even greater when you are working with very complex scenes, such as an architecture scene with the building imported from CAD and containing 20,000 different polygon objects together with 100 lights and 20 cameras added in Cinema 4D. Layers offer an elegant solution to working quickly with these complex scenes. Suppose you want to texture the walls. Simply hide everything else in the Object Manager so that you can focus on the walls without other objects getting in the way.
Keep in mind that as well as using layers you can hide items using various View menu options in the Object Manager.

In the Asset Browser, you’ll find a more complex layer structure in the “Funny Face.c4d” scene. Feel free to experiment with the controls to get a sense of how powerful this feature is.