Apple Final Cut Pro 5 Uživatelský manuál stáhnout pdf (Strana 285)

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APPENDIX

A FXScript Reference

This appendix lists all the commands and functions in the FXScript language. These are

grouped by the FXBuilder submenu they appear in. Each command includes information

about its syntax, any parameters it requires, and any special information about its use.

When creating a script, you can place command templates into an FXBuilder Text Entry tab

by choosing them from the FXBuilder menu.

Scripting Parameters

Many FXScript commands require parameters for the calculations they perform. These have

names that indicate their uses. Any parameter required by FXScript functions and commands

can be replaced by a variable, as long as the variable is of the correct data type and has been

correctly declared elsewhere in the script. Some functions and commands can use numeric

parameters as well as variables.

Expressions in FXScript

Expressions are like phrases made up from scripting words, numbers, and operators,

together with parentheses. The operators determine what sort of calculation or evaluation

(also known as an operation) is done, and the parentheses determine the order in which

calculations are performed.

The rules are as follows:

m An expression is interpreted from left to right.

m Multiplication and division take precedence over addition and subtraction.

m Parts of the expression that are enclosed in parentheses are given priority over parts that

are outside the parentheses. If there are several layers of parentheses, the expression is

evaluated in order from the innermost parentheses to the outermost.

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Apple Final Cut Pro 5 Uživatelský manuál Strana 285