Struct ParticleEmitter

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pub struct ParticleEmitter {
    pub position: [f32; 3],
    pub emission_rate: f32,
    pub initial_velocity: [f32; 3],
    pub velocity_spread: f32,
    pub lifetime: f32,
    pub color: [f32; 4],
    pub size: f32,
    pub accumulator: f32,
}

Expand description

Emits particles from a point with configurable velocity distribution and lifetime.

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§position: [f32; 3]

World-space emission origin.

§emission_rate: f32

Number of particles emitted per second.

§initial_velocity: [f32; 3]

Base initial velocity [vx, vy, vz].

§velocity_spread: f32

Random spread (half-range) added to each velocity component.

§lifetime: f32

Initial particle lifetime in seconds.

§color: [f32; 4]

Initial particle color.

§size: f32

Initial particle size.

§accumulator: f32

Accumulated fractional particles not yet emitted.

Implementations§

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impl ParticleEmitter

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pub fn new( position: [f32; 3], emission_rate: f32, initial_velocity: [f32; 3], velocity_spread: f32, lifetime: f32, ) -> Self

Create a new emitter.

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pub fn particles_to_emit(&mut self, dt: f32) -> usize

Advance the accumulator and return how many particles to emit this step.

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pub fn spawn(&self, rng: &mut Lcg) -> GpuParticle

Build a fresh particle, adding random velocity spread via the given RNG.

Trait Implementations§

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impl Clone for ParticleEmitter

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fn clone(&self) -> ParticleEmitter

Returns a duplicate of the value. Read more

1.0.0 (const: unstable) · Source§

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

Performs copy-assignment from source. Read more

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impl Debug for ParticleEmitter

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

Formats the value using the given formatter. Read more

Auto Trait Implementations§

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impl UnwindSafe for ParticleEmitter

Blanket Implementations§

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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more

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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more

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impl<T> BorrowMut<T> for T
where T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more

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impl<T> CloneToUninit for T
where T: Clone,

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unsafe fn clone_to_uninit(&self, dest: *mut u8)

🔬This is a nightly-only experimental API. (clone_to_uninit)

Performs copy-assignment from self to dest. Read more

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impl<T> Downcast<T> for T

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fn downcast(&self) -> &T

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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T, U> Into for T
where U: From<T>,

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T> IntoEither for T

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fn into_either(self, into_left: bool) -> Either<Self, Self>

Converts self into a Left variant of Either<Self, Self> if into_left is true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more

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fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
where F: FnOnce(&Self) -> bool,

Converts self into a Left variant of Either<Self, Self> if into_left(&self) returns true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more

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