Struct libliquidfun_sys::box2d::ffi::b2ParticleSystemDef

#[repr(C)]
pub struct b2ParticleSystemDef {

    pub strictContactCheck: bool,
    pub density: f32,
    pub gravityScale: f32,
    pub radius: f32,
    pub maxCount: int32,
    pub pressureStrength: f32,
    pub dampingStrength: f32,
    pub elasticStrength: f32,
    pub springStrength: f32,
    pub viscousStrength: f32,
    pub surfaceTensionPressureStrength: f32,
    pub surfaceTensionNormalStrength: f32,
    pub repulsiveStrength: f32,
    pub powderStrength: f32,
    pub ejectionStrength: f32,
    pub staticPressureStrength: f32,
    pub staticPressureRelaxation: f32,
    pub staticPressureIterations: int32,
    pub colorMixingStrength: f32,
    pub destroyByAge: bool,
    pub lifetimeGranularity: f32,
}

Fields

strictContactCheck: bool

Enable strict Particle/Body contact check. See SetStrictContactCheck for details.

density: f32

Set the particle density. See SetDensity for details.

gravityScale: f32

Change the particle gravity scale. Adjusts the effect of the global gravity vector on particles. Default value is 1.0f.

radius: f32

Particles behave as circles with this radius. In Box2D units.

maxCount: int32

Set the maximum number of particles. By default, there is no maximum. The particle buffers can continue to grow while b2World’s block allocator still has memory. See SetMaxParticleCount for details.

pressureStrength: f32

Increases pressure in response to compression Smaller values allow more compression

dampingStrength: f32

Reduces velocity along the collision normal Smaller value reduces less

elasticStrength: f32

Restores shape of elastic particle groups Larger values increase elastic particle velocity

springStrength: f32

Restores length of spring particle groups Larger values increase spring particle velocity

viscousStrength: f32

Reduces relative velocity of viscous particles Larger values slow down viscous particles more

surfaceTensionPressureStrength: f32

Produces pressure on tensile particles 0~0.2. Larger values increase the amount of surface tension.

surfaceTensionNormalStrength: f32

Smoothes outline of tensile particles 0~0.2. Larger values result in rounder, smoother, water-drop-like clusters of particles.

repulsiveStrength: f32

Produces additional pressure on repulsive particles Larger values repulse more Negative values mean attraction. The range where particles behave stably is about -0.2 to 2.0.

powderStrength: f32

Produces repulsion between powder particles Larger values repulse more

ejectionStrength: f32

Pushes particles out of solid particle group Larger values repulse more

staticPressureStrength: f32

Produces static pressure Larger values increase the pressure on neighboring partilces For a description of static pressure, see http://en.wikipedia.org/wiki/Static_pressure#Static_pressure_in_fluid_dynamics

staticPressureRelaxation: f32

Reduces instability in static pressure calculation Larger values make stabilize static pressure with fewer iterations

staticPressureIterations: int32

Computes static pressure more precisely See SetStaticPressureIterations for details

colorMixingStrength: f32

Determines how fast colors are mixed 1.0f ==> mixed immediately 0.5f ==> mixed half way each simulation step (see b2World::Step())

destroyByAge: bool

Whether to destroy particles by age when no more particles can be created. See #b2ParticleSystem::SetDestructionByAge() for more information.

lifetimeGranularity: f32

Granularity of particle lifetimes in seconds. By default this is set to (1.0f / 60.0f) seconds. b2ParticleSystem uses a 32-bit signed value to track particle lifetimes so the maximum lifetime of a particle is (2^32 - 1) / (1.0f / lifetimeGranularity) seconds. With the value set to 1/60 the maximum lifetime or age of a particle is 2.27 years.

Implementations

impl b2ParticleSystemDef

pub fn new() -> impl New<Output = Self>

Trait Implementations

impl CopyNew for b2ParticleSystemDef

unsafe fn copy_new( other: &b2ParticleSystemDef, this: Pin<&mut MaybeUninit<b2ParticleSystemDef>> )

Synthesized copy constructor.

impl Drop for b2ParticleSystemDef

fn drop(self: &mut b2ParticleSystemDef)

Synthesized destructor.

impl ExternType for b2ParticleSystemDef

type Id = (b, _2, P, a, r, t, i, c, l, e, S, y, s, t, e, m, D, e, f)

A type-level representation of the type’s C++ namespace and type name.

type Kind = Trivial

Either cxx::kind::Opaque or cxx::kind::Trivial.

impl MakeCppStorage for b2ParticleSystemDef

unsafe fn allocate_uninitialized_cpp_storage() -> *mut b2ParticleSystemDef

Allocates heap space for this type in C++ and return a pointer to that space, but do not initialize that space (i.e. do not yet call a constructor).

unsafe fn free_uninitialized_cpp_storage(arg0: *mut b2ParticleSystemDef)

Frees a C++ allocation which has not yet had a constructor called.

impl MoveNew for b2ParticleSystemDef

unsafe fn move_new( other: Pin<MoveRef<'_, b2ParticleSystemDef>>, this: Pin<&mut MaybeUninit<b2ParticleSystemDef>> )

Synthesized move constructor.

impl SharedPtrTarget for b2ParticleSystemDef

impl UniquePtrTarget for b2ParticleSystemDef

impl VectorElement for b2ParticleSystemDef

impl WeakPtrTarget for b2ParticleSystemDef