Struct PointBurstBuilder 

pub struct PointBurstBuilder { /* private fields */ }

Simpler builder for particles bursting outward from a point.

let burst = PointBurstBuilder::new(320.0, 320.0)
    .velocity(100.0)
    .color(Color::ORANGE)
    .build();

Implementations

impl PointBurstBuilder

pub fn new(x: f64, y: f64) -> Self

Create a new point burst builder at the specified position.

pub fn birth_rate(self, rate: f32) -> Self

Set the number of particles spawned per second.

pub fn lifetime(self, seconds: f32) -> Self

Set how long each particle lives (in seconds).

pub fn lifetime_range(self, range: f32) -> Self

Set random variation in lifetime.

pub fn velocity(self, v: f64) -> Self

Set initial velocity (points per second).

pub fn velocity_range(self, range: f64) -> Self

Set random variation in velocity.

pub fn scale(self, s: f64) -> Self

Set the scale of particles.

pub fn scale_range(self, range: f64) -> Self

Set random variation in scale.

pub fn scale_speed(self, speed: f64) -> Self

Set rate of scale change per second.

pub fn alpha_speed(self, speed: f32) -> Self

Set rate of alpha change per second (negative = fade out).

pub fn color(self, color: impl Into<Color>) -> Self

Set particle color using a Color value.

Example

.color(Color::CYAN)
.color(Color::rgb(1.0, 0.8, 0.2))

pub fn color_rgb(self, r: f64, g: f64, b: f64) -> Self

Set particle color (RGB, 0.0-1.0).

pub fn color_rgba(self, r: f64, g: f64, b: f64, a: f64) -> Self

Set particle color (RGBA, 0.0-1.0).

pub fn image(self, img: ParticleImage) -> Self

Set the particle image. Defaults to soft_glow(64) if not set.

pub fn render_mode(self, mode: RenderMode) -> Self

Set the render mode. Defaults to Additive.

pub fn build(self) -> Retained<CAEmitterLayer>

Build the CAEmitterLayer configured for point burst.