Apple MA434Z/A User Manual - Page 959

Function Formats So, where are all of these functions and how do you find their formats? Typically, they are organized by the type of data they manipulate. Here is a handy way to get a function format: Create the node(s) in the interface, select and copy the node(s) (press Command-C or Control-C), and paste the nodes into a text editor. For more information: • For image functions, see their relative chapters. For example, for information on the Rand function, see "Rand" on page 602. • For mathematical functions, see"Expressions" on page 939. • For Shake settings, see "Setting Preferences and Customizing Shake" on page 355. • For interface building functions, see "Setting Preferences and Customizing Shake" on page 355. • Examples abound in /include/nreal.h and /include/nrui.h, as well as in Chapter 32, "The Cookbook," on page 963. Script Comments To temporarily comment out lines in a script, use the following symbols: # This line is commented out // This line is also commented out This is not commented out //But this is /* All of these lines are commented out */ Conditional Statements Like in C, you can use conditional statements in your scripts. These are particularly useful in macros, where a conditional parameter is input by the user. Keep in mind that the conditional statements require you to work in the script and cannot be built with interface tools. Conditional Expression To simply switch a parameter, use the in-parameter conditional expression expr1?expr2:expr3, which reads as, "if expr1 is true, use expr2; otherwise, use expr3." For example, time>10?0:1 reads as, "if time is greater than 10, then set the value to 0; otherwise, set it to 1." Chapter 31 Expressions and Scripting 959