Struct BuiltInExpressionFfi 

pub struct BuiltInExpressionFfi { /* private fields */ }

Built-in functions for Foreign Function Interface available from composition animation expressions

The functions are those of the WinUI composition expression reference (ExpressionAnimation, “Expression Functions per Type”), with the overloads the reference does not list but the WinUI expression engine accepts (the scalar Length, Distance and Scale, the vector Mod), a few System.Numerics overloads of the matrix factories, and the functions of the upstream framework (SmoothStep, the relative point and scalar constructors). Function names are case-insensitive, as in WinUI.

Implementations

impl BuiltInExpressionFfi

pub fn instance() -> &'static BuiltInExpressionFfi

The shared instance.

Trait Implementations

impl IExpressionForeignFunctionInterface for BuiltInExpressionFfi

fn call( &self, name: &str, arguments: &[ExpressionVariant], ) -> Option<ExpressionVariant>

Calls the function with the given name and arguments. Returns None when there is no function with that name accepting the arguments.