Struct heron::rapier_plugin::rapier2d::prelude::IntegrationParameters
pub struct IntegrationParameters {Show 15 fields
pub dt: f32,
pub min_ccd_dt: f32,
pub erp: f32,
pub damping_ratio: f32,
pub joint_erp: f32,
pub joint_damping_ratio: f32,
pub allowed_linear_error: f32,
pub max_penetration_correction: f32,
pub prediction_distance: f32,
pub max_velocity_iterations: usize,
pub max_velocity_friction_iterations: usize,
pub max_stabilization_iterations: usize,
pub interleave_restitution_and_friction_resolution: bool,
pub min_island_size: usize,
pub max_ccd_substeps: usize,
}
Expand description
Parameters for a time-step of the physics engine.
Fields
dt: f32
The timestep length (default: 1.0 / 60.0
)
min_ccd_dt: f32
Minimum timestep size when using CCD with multiple substeps (default 1.0 / 60.0 / 100.0
)
When CCD with multiple substeps is enabled, the timestep is subdivided
into smaller pieces. This timestep subdivision won’t generate timestep
lengths smaller than min_ccd_dt
.
Setting this to a large value will reduce the opportunity to performing CCD substepping, resulting in potentially more time dropped by the motion-clamping mechanism. Setting this to an very small value may lead to numerical instabilities.
erp: f32
0-1: multiplier for how much of the constraint violation (e.g. contact penetration)
will be compensated for during the velocity solve.
(default 0.8
).
damping_ratio: f32
0-1: the damping ratio used by the springs for Baumgarte constraints stabilization.
Lower values make the constraints more compliant (more “springy”, allowing more visible penetrations
before stabilization).
(default 0.25
).
joint_erp: f32
0-1: multiplier for how much of the joint violation
will be compensated for during the velocity solve.
(default 1.0
).
joint_damping_ratio: f32
The fraction of critical damping applied to the joint for constraints regularization.
(default 0.25
).
allowed_linear_error: f32
Amount of penetration the engine wont attempt to correct (default: 0.001m
).
max_penetration_correction: f32
Maximum amount of penetration the solver will attempt to resolve in one timestep.
prediction_distance: f32
The maximal distance separating two objects that will generate predictive contacts (default: 0.002
).
max_velocity_iterations: usize
Maximum number of iterations performed to solve non-penetration and joint constraints (default: 4
).
max_velocity_friction_iterations: usize
Maximum number of iterations performed to solve friction constraints (default: 8
).
max_stabilization_iterations: usize
Maximum number of iterations performed to remove the energy introduced by penetration corrections (default: 1
).
interleave_restitution_and_friction_resolution: bool
If false
, friction and non-penetration constraints will be solved in the same loop. Otherwise,
non-penetration constraints are solved first, and friction constraints are solved after (default: true
).
min_island_size: usize
Minimum number of dynamic bodies in each active island (default: 128
).
max_ccd_substeps: usize
Maximum number of substeps performed by the solver (default: 1
).
Implementations
impl IntegrationParameters
impl IntegrationParameters
pub fn inv_dt(&self) -> f32
pub fn inv_dt(&self) -> f32
The inverse of the time-stepping length, i.e. the steps per seconds (Hz).
This is zero if self.dt
is zero.
pub fn set_dt(&mut self, dt: f32)
👎Deprecated: You can just set the IntegrationParams::dt
value directly
pub fn set_dt(&mut self, dt: f32)
IntegrationParams::dt
value directlySets the time-stepping length.
pub fn set_inv_dt(&mut self, inv_dt: f32)
pub fn set_inv_dt(&mut self, inv_dt: f32)
Sets the inverse time-stepping length (i.e. the frequency).
This automatically recompute self.dt
.
pub fn erp_inv_dt(&self) -> f32
pub fn erp_inv_dt(&self) -> f32
The ERP coefficient, multiplied by the inverse timestep length.
pub fn joint_erp_inv_dt(&self) -> f32
pub fn joint_erp_inv_dt(&self) -> f32
The joint ERP coefficient, multiplied by the inverse timestep length.
pub fn cfm_factor(&self) -> f32
pub fn cfm_factor(&self) -> f32
The CFM factor to be used in the constraints resolution.
pub fn joint_cfm_coeff(&self) -> f32
pub fn joint_cfm_coeff(&self) -> f32
The CFM (constranits force mixing) coefficient applied to all joints for constraints regularization
Trait Implementations
impl Clone for IntegrationParameters
impl Clone for IntegrationParameters
fn clone(&self) -> IntegrationParameters
fn clone(&self) -> IntegrationParameters
1.0.0 · sourcefn clone_from(&mut self, source: &Self)
fn clone_from(&mut self, source: &Self)
source
. Read moreimpl Debug for IntegrationParameters
impl Debug for IntegrationParameters
impl Default for IntegrationParameters
impl Default for IntegrationParameters
fn default() -> IntegrationParameters
fn default() -> IntegrationParameters
impl Copy for IntegrationParameters
Auto Trait Implementations
impl RefUnwindSafe for IntegrationParameters
impl Send for IntegrationParameters
impl Sync for IntegrationParameters
impl Unpin for IntegrationParameters
impl UnwindSafe for IntegrationParameters
Blanket Implementations
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