Struct WorldDef 

pub struct WorldDef {

    pub gravity: Vec3,
    pub restitution_threshold: f32,
    pub hit_event_threshold: f32,
    pub contact_hertz: f32,
    pub contact_damping_ratio: f32,
    pub contact_speed: f32,
    pub maximum_linear_speed: f32,
    pub friction_callback: Option<FrictionCallback>,
    pub restitution_callback: Option<RestitutionCallback>,
    pub enable_sleep: bool,
    pub enable_continuous: bool,
    pub user_data: u64,
    pub capacity: Capacity,
    pub create_debug_shape: Option<CreateDebugShapeCallback>,
    pub destroy_debug_shape: Option<DestroyDebugShapeCallback>,
    pub user_debug_shape_context: u64,
    pub internal_value: i32,
}

World definition used to create a simulation world. Must be initialized using default_world_def. (b3WorldDef)

Task-system fields from C (workerCount, enqueue/finish callbacks) are omitted: the Rust port is serial and never spawns workers.

Fields

gravity: Vec3

Gravity vector. Box3D has no up-vector defined.

restitution_threshold: f32

Restitution speed threshold, usually in m/s.

hit_event_threshold: f32

Hit event speed threshold, usually in m/s.

contact_hertz: f32

Contact stiffness. Cycles per second.

contact_damping_ratio: f32

Contact bounciness. Non-dimensional.

contact_speed: f32

Contact speed cap for overlap resolution, usually m/s.

maximum_linear_speed: f32

Maximum linear speed, usually m/s.

friction_callback: Option<FrictionCallback>

Optional friction mixing callback.

restitution_callback: Option<RestitutionCallback>

Optional restitution mixing callback.

enable_sleep: bool

Can bodies go to sleep?

enable_continuous: bool

Enable continuous collision.

user_data: u64

Application-specific world data.

capacity: Capacity

Optional capacity hints to avoid run-time allocations.

create_debug_shape: Option<CreateDebugShapeCallback>

Used to create debug draw shapes when a shape is first drawn.

destroy_debug_shape: Option<DestroyDebugShapeCallback>

Used to destroy debug draw shapes when a shape is modified or destroyed.

user_debug_shape_context: u64

Passed to the debug shape callbacks.

internal_value: i32

Used internally to detect a valid definition. DO NOT SET.

Trait Implementations

impl Clone for WorldDef

fn clone(&self) -> WorldDef

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for WorldDef

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

Formats the value using the given formatter.

impl Default for WorldDef

fn default() -> Self

Returns the “default value” for a type.