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Foundry Virtual Tabletop - API Documentation - Version 14
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    Interface VFXParticleGeneratorData

    interface VFXParticleGeneratorData {
        alpha: { max: number; min: number };
        area: object | null;
        blend: number;
        config: ParticleGeneratorConfiguration;
        count: number;
        duration?: number;
        elevation: number;
        fade: { in: number; out: number } | null;
        initial: number;
        lifetime: { max: number | null; min: number };
        mode: string;
        perFrame?: number;
        pointSourceMask: any;
        rotation?: ParticleGeneratorRotationOptions;
        scale: { max: number; min: number };
        sort: number;
        spawnRate: number;
        textures: string[];
        velocity: { angle: number; speed: number; x: number; y: number } | null;
    }
    Index

    Properties

    alpha area blend config count duration? elevation fade initial lifetime mode perFrame? pointSourceMask rotation? scale sort spawnRate textures velocity

    Properties

    alpha: { max: number; min: number }

    Alpha range [min, max] (default 1)

    area: object | null

    Spawn area; a point, rect, circle, ring, or line object. Supports reference resolution (e.g. {reference: "target"}).

    blend: number

    PIXI blend mode (default NORMAL = 0)

    config: ParticleGeneratorConfiguration

    Additional ParticleGenerator configuration passed directly to the constructor. Can include orbit, follow, constraints, drift, blur, clip, anchor, callbacks, and any other ParticleGeneratorConfiguration fields. When effects are built directly in code, this can also include a custom batchable shaderClass that is compatible with SpriteMesh and whose plugin was already registered. Values here override any explicitly-set schema fields of the same name.

    count: number

    Target particle count (default 50)

    duration?: number

    How long the generator runs in ms before soft-stopping to let existing particles expire. If absent, runs until the component is explicitly stopped.

    elevation: number

    Layer elevation for the particle container (default 0)

    fade: { in: number; out: number } | null

    Fade-in and fade-out durations in ms (default null)

    initial: number

    Proportion of count to spawn immediately on start [0, 1] (default 0.25)

    lifetime: { max: number | null; min: number }

    Particle lifetime in ms. If max is null, min is used as a fixed value. Otherwise, spawns with a random lifetime in [min, max] (default min 1000).

    mode: string

    Generator mode: "ambient" or "effect" (default "effect")

    perFrame?: number

    Deprecated since v14. Migrated to spawnRate.

    pointSourceMask: any

    An optional mask for clipping particles to wall boundaries. Accepts either a pre-computed PointSourcePolygon (shared via VFXReferenceField resolution) or a serializable config object {x, y, type, radius} from which a polygon is computed at draw time. Supports reference resolution for efficient reuse across multiple components within the same effect.

    rotation?: ParticleGeneratorRotationOptions

    Rotation configuration for particles.

    scale: { max: number; min: number }

    Scale range [min, max] (default 1)

    sort: number

    Sort order within the elevation layer (default 0)

    spawnRate: number

    Maximum particles spawned per second during auto-spawn (default 300)

    textures: string[]

    Texture paths for particles

    velocity: { angle: number; speed: number; x: number; y: number } | null

    Initial particle velocity. Specify either x/y components or speed (px/s) and angle (degrees). (default null)

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