Enum Cond 

pub enum Cond<P = ParamId> {
    Always,
    Is(P),
    Trigger(P),
    Above(P, f32),
    Below(P, f32),
    Finished,
    After(f32),
    Not(Box<Cond<P>>),
    All(Vec<Cond<P>>),
    Any(Vec<Cond<P>>),
}

A condition over parameters P (names in a GraphSpec, ids in a compiled Graph).

Variants

Always

Always holds.

Is(P)

A bool parameter is on.

Trigger(P)

A trigger is pending. A transition that fires consumes the triggers it tested.

Above(P, f32)

A float parameter is above the value.

Below(P, f32)

A float parameter is below the value.

Finished

The state’s clip has finished (only Playback::Once clips do).

After(f32)

At least this many seconds in the state.

Not(Box<Cond<P>>)

The inner condition does not hold. Triggers under a Not are never consumed.

All(Vec<Cond<P>>)

Every inner condition holds.

Any(Vec<Cond<P>>)

At least one inner condition holds.

Implementations

impl<P> Cond<P>

pub fn not(c: Cond<P>) -> Self

The negation of c.

pub fn and(self, o: Cond<P>) -> Self

Both self and o.

pub fn resolve<Q, E>( &self, f: &mut dyn FnMut(&P, Use) -> Result<Q, E>, ) -> Result<Cond<Q>, E>

The same condition over other parameter references, or the first error f gives.

impl Cond

pub fn eval(&self, p: &Params, finished: bool, time: f32) -> bool

Whether the condition holds, given the parameters, whether the clip finished and seconds in the state.

pub fn used_triggers(&self, p: &Params, out: &mut Vec<ParamId>)

The pending triggers this condition tested positively, to consume when its transition fires.

Trait Implementations

impl<P: Clone> Clone for Cond<P>

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<P: Debug> Debug for Cond<P>

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

Formats the value using the given formatter.

impl<P: PartialEq> PartialEq for Cond<P>

fn eq(&self, other: &Self) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl<P: PartialEq> StructuralPartialEq for Cond<P>