Struct Contact 

#[non_exhaustive]
pub struct Contact {
    pub a: BodyId,
    pub b: ContactPartner,
    pub point: Vec3,
    pub normal: Vec3,
    pub depth: f32,
    pub phase: ContactPhase,
}

A single point at which two things touch. 两样东西相互接触的单个点。

The normal points from a toward b; depth is how far the two shapes overlap along it. A pair that separates still reports an End contact built from the last state in which it overlapped, so an application can always observe both ends of a contact’s lifetime. 法线由 a 指向 b；depth 是两形状沿该方向的重叠量。已经分离的一对仍会报出一个 由最后一次重叠状态构造的 End 接触，因此应用总能观察到一段接触生命周期的两端。

Fields (Non-exhaustive)

Non-exhaustive structs could have additional fields added in future. Therefore, non-exhaustive structs cannot be constructed in external crates using the traditional Struct { .. } syntax; cannot be matched against without a wildcard ..; and struct update syntax will not work.

a: BodyId

The Body the normal points away from. 法线背离的那个 Body。

b: ContactPartner

What the normal points toward. 法线指向的东西。

point: Vec3

The contact point, in world space. 接触点（世界空间）。

normal: Vec3

The unit contact normal, pointing from a toward b. 单位接触法线，由 a 指向 b。

depth: f32

Penetration depth along the normal. Always positive for a live Contact. 沿法线的穿透深度。存活接触恒为正。

phase: ContactPhase

Where this Contact is in its lifetime. 该接触在其生命周期中的位置。

Implementations

impl Contact

pub fn involves(&self, id: BodyId) -> bool

Whether the Contact has the given Body on either side. 该 Contact 的任意一侧是否为给定的 Body。

Trait Implementations

impl Clone for Contact

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 Contact

impl Debug for Contact

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

Formats the value using the given formatter.

impl PartialEq for Contact

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for Contact