Enum VisibilityExpr 

pub enum VisibilityExpr {
    And(Vec<VisibilityExpr>),
    Or(Vec<VisibilityExpr>),
    Not(Box<VisibilityExpr>),
    Layer(u32),
}

Boolean visibility expression from an OCMD /VE array.

The parser always emits the canonical form (operands as Vec<VisibilityExpr>); leaves are layer references.

Variants

And(Vec<VisibilityExpr>)

Conjunction — visible iff every operand is visible.

Or(Vec<VisibilityExpr>)

Disjunction — visible iff any operand is visible.

Not(Box<VisibilityExpr>)

Negation — exactly one operand.

Layer(u32)

Leaf: refer to a single OCG by object number.

Trait Implementations

impl Clone for VisibilityExpr

fn clone(&self) -> VisibilityExpr

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for VisibilityExpr

fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>

Formats the value using the given formatter.