9.5.2

Table Of Contents
756 CHAPTER 17
OBJECT MANAGER 757
Compositing
This tag contains several options that affect rendering.
Cast Shadows, Receive Shadows
Sometimes it is useful to prevent objects from casting or receiving shadows, especially for technical
illustrations. In such cases, disable these options.
Compositing Background
This option will cause the object to be self-illuminated yet still receive shadows.
The object in question (in our example below, the oor) must have its own material.
Suppose you are creating a car for a website. The website uses a white background and you need to
render the car so that it appears to cast a shadow onto the web page.
Seen by Transparency
This option relates to everything that inuences transparency during rendering:
Transparency from the Transparencymaterial channel (“Refraction” = 1
results in no refraction effect).