Enum ContactPhase 

#[non_exhaustive]
pub enum ContactPhase {
    Begin,
    Persist,
    End,
}

Whether a Contact is appearing, persisting, or disappearing this step. 该 Contact 本步是正在出现、持续存在，还是正在消失。

Variants (Non-exhaustive)

Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.

Begin

The pair touched this step and did not touch last step. 本步相碰，上一步未相碰。

Persist

The pair touched last step and still touches. 上一步相碰，本步仍相碰。

End

The pair touched last step and does not touch now. 上一步相碰，本步不再相碰。

Trait Implementations

impl Clone for ContactPhase

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for ContactPhase

impl Debug for ContactPhase

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

Formats the value using the given formatter.

impl Eq for ContactPhase

impl PartialEq for ContactPhase

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for ContactPhase