Struct AlignmentTween 

pub struct AlignmentTween {
    pub begin: Option<Alignment>,
    pub end: Option<Alignment>,
}

An interpolation between two alignments.

This class specializes the interpolation of Tween<Alignment> to be appropriate for alignments.

See Tween for a discussion on how to use interpolation objects.

Like FractionalOffsetTween, this one is a value rather than an arena object (see PORTING.md).

See also:

• AlignmentGeometryTween, which interpolates between two AlignmentGeometry objects.

Fields

begin: Option<Alignment>

The value this variable has at the beginning of the animation.

end: Option<Alignment>

The value this variable has at the end of the animation.

Implementations

impl AlignmentTween

pub fn new(begin: Option<Alignment>, end: Option<Alignment>) -> AlignmentTween

Creates a fractional offset tween.

The begin and end properties may be None; the None value is treated as meaning the center.

pub fn lerp(&self, t: f64) -> Alignment

Returns the value this variable has at the given animation clock value.

Trait Implementations

impl Animatable<Alignment> for AlignmentTween

fn transform(&self, _app: &App, t: f64) -> Alignment

Returns the value of the object at point t.

fn evaluate(&self, app: &App, animation: AnyAnimation<f64>) -> T

where Self: Sized,

The current value of this object for the given animation.

fn animate(self, app: &mut App, parent: AnyAnimation<f64>) -> AnyAnimation<T>

where Self: Sized + Clone + 'static, T: 'static,

Returns a new AnyAnimation that is driven by the given animation but that takes on values determined by this object.

fn chain<P>(self, parent: P) -> ChainedEvaluation<P, Self>

where Self: Sized + Clone, P: Animatable<f64> + Clone,

Returns a new Animatable whose value is determined by first evaluating the given parent and then evaluating this object at the result.

impl Clone for AlignmentTween

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for AlignmentTween

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

Formats the value using the given formatter.