Enum MotionType 

#[non_exhaustive]
pub enum MotionType {
    Dynamic,
    Static,
    Kinematic,
}

How a Body’s motion is produced. Body 的运动是如何产生的。

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.

Dynamic

Driven by gravity, forces, impulses, and Contacts. It has finite mass, and anything may move it. 由重力、力、冲量与 Contact 驱动。具有有限质量，任何东西都可以移动它。

Static

Never moves, and no Contact can move it. 永不移动，且没有任何 Contact 能移动它。

Kinematic

Driven by a velocity the app sets, and no Contact can change it. It pushes Dynamic Bodies as though infinitely massive. 由应用设定的速度驱动，没有任何 Contact 能改变它。它以无穷大的质量推动 Dynamic。

Implementations

impl MotionType

pub fn is_simulated(self) -> bool

Whether gravity, forces, and impulses accelerate a Body in this mode. 该模式下重力、力与冲量是否会加速 Body。

pub fn moves(self) -> bool

Whether the Body is carried by its own velocity each step. 该 Body 是否每步被自身速度带动。

pub fn is_pushable(self) -> bool

Whether a Contact can change this Body’s velocity. Contact 是否能改变该 Body 的速度。

Trait Implementations

impl Clone for MotionType

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 MotionType

impl Debug for MotionType

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

Formats the value using the given formatter.

impl Default for MotionType

fn default() -> Self

Returns the “default value” for a type.

impl Eq for MotionType

impl PartialEq for MotionType

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for MotionType