Type Alias Emission

Emission: {
    rateOverDistance?: Constant | RandomBetweenTwoConstants | LifetimeCurve;
    rateOverTime?: Constant | RandomBetweenTwoConstants | LifetimeCurve;
}

Defines the emission behavior of the particles. Supports rates defined over time or distance using constant values, random ranges, or curves (Bézier or easing).

Type declaration

Default

rateOverTime: 10.0
rateOverDistance: 0.0

Example

// Rate over time as a constant value
rateOverTime: 10;

// Rate over time as a random range
rateOverTime: { min: 5, max: 15 };

// Rate over time using a Bézier curve
rateOverTime: {
  type: 'bezier',
  bezierPoints: [
    { x: 0, y: 0, percentage: 0 },
    { x: 0.5, y: 50 },
    { x: 1, y: 100, percentage: 1 }
  ],
  scale: 1
};

// Rate over distance as a constant value
rateOverDistance: 2;

// Rate over distance as a random range
rateOverDistance: { min: 1, max: 3 };

// Rate over distance using an easing curve
rateOverDistance: {
  type: 'easing',
  curveFunction: (distance) => Math.sin(distance),
  scale: 0.5
};

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