12  Syntax of the User Defined Object (UDO) language

This chapter describes the syntax of the UDO language, explains the structure of UDO scripts, and contains several examples of User Defined Objects, which are also included in the QuickWave installation.

For creation of new User Defined Objects, the user is recommended to use UDO Editor available from Tools of QW-Editor. It simplifies UDO script creation with syntax highlighting, command prompting, error analysis etc.

This chapter contains the following sections describing the UDO language:

• Structure of a single UDO and calls to other UDOs

o   Syntax of header and main UDOs commands

• Defining elements, combined elements and materials

o   Syntax of geometrical UDOs commands

o   Syntax of material UDOs commands

• Variables, functions, arithmetic expressions and file reading

o   Numbers and variables

o   Operators and logical conditions

o   Mathematical functions

o   Reserved variable names

o   File commands and others

• Loops in UDO scripts

• Defining ports, boxes, mesh snapping planes, postprocessing and circuit parameters

o   Syntax of port commands

o   Basic points about port definitions in UDO

o   Postprocessing and circuit parameters

• Moving the elements, copying them and controlling their intersections

• Biphased element and objects

• Controlling the mesh

• UDO commands for QW-BHM regime

• Files used by UDO language and their location

• Optimising with UDO

• UDO commands and functions in alphabetic order