When the material's diffuse color is changed, the scene is automatically redrawn. A multiple-valued field, as the name implies, can store multiple values of a certain data type. For example, a field which could contain multiple floating point values is called an SoMFFloat. The difference between them is important. Sb data types usually have setValue and getValue methods.
Nodes are field containers .
In Scheme this type is an integer which is 1 when true and 0 when false. However, it is easy to convert the information in them into Scheme syntax. To start reading the manual pages, it is probably most convenient to start xman , a graphical utility for reading the manual. This basic data type encapsulates a vector of three floating point values. This method returns a Scheme vector of three floats, which can be deconstructed using the standard Scheme vector-ref function.