@tsparticles/updater-size/browser/SizeUpdater.js

tsParticles particles size updater

import { getRandom, getRangeValue, loadOptionProperty, percentDenominator, } from "@tsparticles/engine";
import { initParticleNumericAnimationValue, updateAnimation } from "@tsparticles/animation-utils";
import { Size } from "./Options/Classes/Size.js";
const minLoops = 0;
export class SizeUpdater {
    #container;
    constructor(container) {
        this.#container = container;
    }
    init(particle) {
        const container = this.#container, sizeOptions = particle.options.size;
        if (!sizeOptions) {
            return;
        }
        const sizeAnimation = sizeOptions.animation;
        if (!sizeAnimation.enable) {
            return;
        }
        particle.size.velocity = (particle.retina.sizeAnimationSpeed / percentDenominator) * container.retina.reduceFactor;
        if (sizeAnimation.sync) {
            return;
        }
        particle.size.velocity *= getRandom();
    }
    isEnabled(particle) {
        return (!particle.destroyed &&
            !particle.spawning &&
            particle.size.enable &&
            ((particle.size.maxLoops ?? minLoops) <= minLoops ||
                ((particle.size.maxLoops ?? minLoops) > minLoops &&
                    (particle.size.loops ?? minLoops) < (particle.size.maxLoops ?? minLoops))));
    }
    loadOptions(options, ...sources) {
        loadOptionProperty(options, "size", Size, ...sources);
    }
    preInit(particle) {
        const pxRatio = this.#container.retina.pixelRatio, options = particle.options, sizeOptions = options.size;
        if (!sizeOptions) {
            return;
        }
        particle.size = initParticleNumericAnimationValue(sizeOptions, pxRatio);
        particle.retina.sizeAnimationSpeed = getRangeValue(sizeOptions.animation.speed) * pxRatio;
    }
    reset(particle) {
        particle.size.time = 0;
        particle.size.loops = 0;
    }
    update(particle, delta) {
        if (!this.isEnabled(particle) || !particle.options.size) {
            return;
        }
        updateAnimation(particle, particle.size, true, particle.options.size.animation.destroy, delta);
    }
}