4.5 User-defined functions

User-defined functions take no arguments, and are evaluated as if a file containing the function body was included at the location of the Call statement.

Function string

Begins the declaration of a user-defined function named string. The body of the function starts on the line after `Function string', and can contain any Gmsh command.

Return

Ends the body of the current user-defined function. Function declarations cannot be imbricated.

Call string;

Executes the body of a (previously defined) function named string.

See ‘t5.geo’, for an example of a user-defined function. A shortcoming of Gmsh's scripting language is that all variables are “public”. Variables defined inside the body of a function will thus be available outside, too!