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Visible
If the Visibility checkbox is not selected, the object will not be visible in a viewer, nor will it be
rendered into the output image by a Renderer3D. A non-visible object does not cast shadows. This is
usually enabled by default, so objects that you create are visible in both the viewers and final renders.
Unseen by Cameras
If the Unseen by Cameras checkbox is selected, the object will be visible in the viewers but invisible
when viewing the scene through a camera, so the object will not be rendered into the output image by
a Renderer3D. Shadows cast by an Unseen object will still be visible.
Cull Front Face/Back Face
Use these options to cull (exclude) rendering of certain polygons in the geometry. If Cull Back Face is
selected, all polygons with normals pointing away from the view will not be rendered and will not cast
shadows. If Cull Front Face is selected, all polygons with normals pointing away from the view will likewise
be excluded. Selecting both checkboxes has the same effect as deselecting the Visible checkbox.
Ignore Transparent Pixels in Aux Channels
For any piece of geometry, the Renderer3D rejects transparent pixels in the auxiliary image channels.
The reason this is the default is to prevent aux channels (e.g., normals, Z-channel, UVs) from filling in
where there should be blank space or full transparency. For example, suppose in post you want to add
some fog to the rendered image. If you had fully transparent geometry in the foreground affecting the
Z-channel, you would get incorrect fog rendering. By deselecting this checkbox, the transparency will
not be considered and all the aux channels will be filled for all the pixels. This could be useful if you
wanted to replace texture on a 3D element that is fully transparent in certain areas with a texture that is
transparent in different areas; it would be useful to have the whole object set aux channels (in
particular UVs).
Adding FBX Models
The Filmbox FBX format is a scene interchange format that facilitates moving 3D scene information
from one application to another. Fusion’s FBX format support extends model import support to other
3D files such as Collada and OBJ.
Importing an FBX Scene
To import an entire FBX scene, you add an FBXMesh3D node to your node tree. After being prompted
to choose a scene or object file, Fusion imports it to create a composition with the same lights,
cameras, materials, and geometry found in an FBX file.
An imported model, via the FBXMesh3D node
Chapter 853D Compositing Basics 1554
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