tsparticles/browser/Updaters/Roll/RollUpdater.js

Easily create highly customizable particle, confetti and fireworks animations and use them as animated backgrounds for your website. Ready to use components available also for React, Vue.js (2.x and 3.x), Angular, Svelte, jQuery, Preact, Riot.js, Inferno.

import { colorToHsl, getRangeValue } from "../../Utils";
function updateRoll(particle, delta) {
    const roll = particle.options.roll;
    if (!particle.roll || !roll.enable) {
        return;
    }
    const speed = particle.roll.speed * delta.factor;
    const max = 2 * Math.PI;
    particle.roll.angle += speed;
    if (particle.roll.angle > max) {
        particle.roll.angle -= max;
    }
}
export class RollUpdater {
    init(particle) {
        const rollOpt = particle.options.roll;
        if (rollOpt.enable) {
            particle.roll = {
                angle: Math.random() * Math.PI * 2,
                speed: getRangeValue(rollOpt.speed) / 360,
            };
            if (rollOpt.backColor) {
                particle.backColor = colorToHsl(rollOpt.backColor);
            }
            else if (rollOpt.darken.enable && rollOpt.enlighten.enable) {
                const alterType = Math.random() >= 0.5 ? "darken" /* darken */ : "enlighten" /* enlighten */;
                particle.roll.alter = {
                    type: alterType,
                    value: getRangeValue(alterType === "darken" /* darken */ ? rollOpt.darken.value : rollOpt.enlighten.value),
                };
            }
            else if (rollOpt.darken.enable) {
                particle.roll.alter = {
                    type: "darken" /* darken */,
                    value: getRangeValue(rollOpt.darken.value),
                };
            }
            else if (rollOpt.enlighten.enable) {
                particle.roll.alter = {
                    type: "enlighten" /* enlighten */,
                    value: getRangeValue(rollOpt.enlighten.value),
                };
            }
        }
        else {
            particle.roll = { angle: 0, speed: 0 };
        }
    }
    isEnabled(particle) {
        const roll = particle.options.roll;
        return !particle.destroyed && !particle.spawning && roll.enable;
    }
    update(particle, delta) {
        if (!this.isEnabled(particle)) {
            return;
        }
        updateRoll(particle, delta);
    }
}