Guida React

Indice dei Contenuti

1. Installazione
2. Utilizzo Base
3. Effetto Coriandoli
4. Effetto Fuochi d'Artificio
5. Effetto Neve
6. Collegamenti Interattivi
7. Cambio Tema
8. ParticlesProvider
9. Ottimizzazione Performance
10. Configurazione Personalizzata

---

Installazione

npm install @tsparticles/react tsparticles

Oppure con Yarn:

yarn add @tsparticles/react tsparticles

@tsparticles/react è il wrapper React ufficiale. Il pacchetto tsparticles è il motore principale.

---

Utilizzo Base

La configurazione più semplice: renderizza il componente <Particles /> con un oggetto options.

import { useCallback } from "react";
import Particles from "@tsparticles/react";

export default function App() {
  const particlesLoaded = useCallback(async (container) => {
    console.log("Container particelle caricato", container);
  }, []);

  const options = {
    fpsLimit: 120,
    particles: {
      number: { value: 80 },
      color: { value: "#00d4ff" },
      shape: { type: "circle" },
      opacity: { value: 0.6 },
      size: { value: { min: 2, max: 5 } },
      move: {
        enable: true,
        speed: 2,
        outModes: { default: "bounce" },
      },
    },
    background: { color: "#0d1117" },
  };

  return <Particles id="tsparticles" particlesLoaded={particlesLoaded} options={options} />;
}

Importante: Il componente <Particles /> richiede che il motore sia inizializzato prima. Usa initParticlesEngine da @tsparticles/react o <ParticlesProvider> per caricare i tuoi preset prima di renderizzare il componente.

---

Effetto Coriandoli

Renderizza un'esplosione di coriandoli usando il preset confetti.

import Particles from "@tsparticles/react";

export default function Confetti() {
  const options = {
    preset: "confetti",
    fullScreen: { enable: true, zIndex: -1 },
    confetti: {
      colors: ["#ff0000", "#00ff00", "#0000ff", "#ffff00", "#ff00ff"],
      particleCount: 150,
      spread: 70,
      origin: { x: 0.5, y: 0.5 },
    },
  };

  return <Particles id="confetti" options={options} />;
}

Assicurati di aver caricato il preset confetti:

npm install @tsparticles/preset-confetti

Poi registralo nel punto di ingresso della tua app:

import { initParticlesEngine } from "@tsparticles/react";
import { loadConfettiPreset } from "@tsparticles/preset-confetti";

initParticlesEngine(async (engine) => {
  await loadConfettiPreset(engine);
});

---

Effetto Fuochi d'Artificio

Uno spettacolo pirotecnico a schermo intero.

import { useCallback, useMemo } from "react";
import Particles from "@tsparticles/react";

export default function Fireworks() {
  const particlesLoaded = useCallback(async (container) => {
    console.log("Fuochi d'artificio caricati", container);
  }, []);

  const options = useMemo(
    () => ({
      preset: "fireworks",
      fullScreen: { enable: true, zIndex: -1 },
      fireworks: {
        background: "#000000",
        brightness: 100,
        colors: ["#ff0000", "#00ff00", "#0000ff", "#ffff00", "#ff00ff", "#00ffff"],
        intensity: 30,
        life: { min: 4, max: 8 },
        traces: 20,
        explosion: { min: 30, max: 60 },
      },
    }),
    [],
  );

  return <Particles id="fireworks" particlesLoaded={particlesLoaded} options={options} />;
}

Installa il preset:

npm install @tsparticles/preset-fireworks

---

Effetto Neve

Delicati fiocchi di neve che cadono usando il preset snow.

import { useCallback, useMemo } from "react";
import Particles from "@tsparticles/react";

export default function Snow() {
  const particlesLoaded = useCallback(async (container) => {
    console.log("Neve caricata", container);
  }, []);

  const options = useMemo(
    () => ({
      preset: "snow",
      fullScreen: { enable: true, zIndex: -1 },
      snow: {
        color: "#ffffff",
        opacity: { min: 0.3, max: 0.9 },
        size: { min: 1, max: 4 },
        speed: { min: 0.5, max: 2 },
        wobble: true,
      },
    }),
    [],
  );

  return <Particles id="snow" particlesLoaded={particlesLoaded} options={options} />;
}

Installa il preset:

npm install @tsparticles/preset-snow

---

Collegamenti Interattivi

Una rete di nodi connessi con interazione di presa al passaggio del mouse e push al click.

import { useCallback, useMemo } from "react";
import Particles from "@tsparticles/react";

export default function InteractiveLinks() {
  const particlesLoaded = useCallback(async (container) => {
    console.log("Collegamenti interattivi caricati", container);
  }, []);

  const options = useMemo(
    () => ({
      fpsLimit: 60,
      particles: {
        number: { value: 80, density: { enable: true } },
        color: { value: "#00d4ff" },
        shape: { type: "circle" },
        opacity: { value: 0.6 },
        size: { value: { min: 1, max: 4 } },
        links: {
          enable: true,
          distance: 150,
          color: "#00d4ff",
          opacity: 0.4,
          width: 1,
        },
        move: {
          enable: true,
          speed: 1.5,
          outModes: { default: "bounce" },
        },
      },
      interactivity: {
        events: {
          onHover: { enable: true, mode: "grab" },
          onClick: { enable: true, mode: "push" },
        },
        modes: {
          grab: { distance: 180, links: { opacity: 0.8 } },
          push: { quantity: 4 },
        },
      },
      background: { color: "#0d1117" },
    }),
    [],
  );

  return <Particles id="interactive-links" particlesLoaded={particlesLoaded} options={options} />;
}

---

Cambio Tema

Definisci temi multipli e passa dall'uno all'altro con un click su un pulsante.

import { useCallback, useMemo, useRef, useState } from "react";
import Particles from "@tsparticles/react";

export default function ThemeSwitcher() {
  const containerRef = useRef(null);
  const [currentTheme, setCurrentTheme] = useState("dark");

  const particlesLoaded = useCallback(async (container) => {
    containerRef.current = container;
  }, []);

  const options = useMemo(
    () => ({
      fpsLimit: 60,
      particles: {
        number: { value: 60 },
        color: { value: "#00d4ff" },
        shape: { type: "circle" },
        opacity: { value: 0.6 },
        size: { value: { min: 2, max: 5 } },
        links: { enable: true, distance: 150, color: "#00d4ff", opacity: 0.3 },
        move: { enable: true, speed: 1.5, outModes: { default: "bounce" } },
      },
      background: { color: "#0d1117" },
      themes: [
        {
          name: "dark",
          default: { value: true },
          options: {
            background: { color: "#0d1117" },
            particles: { color: { value: "#00d4ff" }, links: { color: "#00d4ff" } },
          },
        },
        {
          name: "light",
          options: {
            background: { color: "#f5f5f5" },
            particles: { color: { value: "#e74c3c" }, links: { color: "#333333" } },
          },
        },
        {
          name: "forest",
          options: {
            background: { color: "#1a3a1a" },
            particles: { color: { value: "#7ec850" }, links: { color: "#7ec850" } },
          },
        },
      ],
    }),
    [],
  );

  const switchTheme = useCallback((theme) => {
    setCurrentTheme(theme);
    if (containerRef.current) {
      containerRef.current.loadTheme(theme);
    }
  }, []);

  return (
    <div style={{ position: "relative", width: "100%", height: "100vh" }}>
      <Particles id="theme-switcher" particlesLoaded={particlesLoaded} options={options} />
      <div
        style={{
          position: "absolute",
          bottom: 20,
          left: "50%",
          transform: "translateX(-50%)",
          zIndex: 10,
          display: "flex",
          gap: 8,
        }}
      >
        <button onClick={() => switchTheme("dark")} style={btnStyle(currentTheme === "dark")}>
          Scuro
        </button>
        <button onClick={() => switchTheme("light")} style={btnStyle(currentTheme === "light")}>
          Chiaro
        </button>
        <button onClick={() => switchTheme("forest")} style={btnStyle(currentTheme === "forest")}>
          Foresta
        </button>
      </div>
    </div>
  );
}

const btnStyle = (active) => ({
  padding: "8px 16px",
  border: "none",
  borderRadius: 6,
  background: active ? "#333" : "#666",
  color: "#fff",
  cursor: "pointer",
});

---

ParticlesProvider

Usa ParticlesProvider per inizializzare il motore una volta nella radice dell'app. Questo è l'approccio consigliato quando hai più componenti particella o usi preset personalizzati.

// App.jsx
import { ParticlesProvider } from "@tsparticles/react";
import { loadSlim } from "@tsparticles/slim";
import Home from "./Home";

const engineInit = async (engine) => {
  await loadSlim(engine);
  // Carica preset aggiuntivi qui:
  // await loadConfettiPreset(engine);
  // await loadFireworksPreset(engine);
  // await loadSnowPreset(engine);
};

export default function App() {
  return (
    <ParticlesProvider load={engineInit}>
      <Home />
    </ParticlesProvider>
  );
}

// Home.jsx
import Particles from "@tsparticles/react";

export default function Home() {
  return (
    <Particles
      id="tsparticles"
      options={{
        particles: {
          number: { value: 50 },
          color: { value: "#ff6b6b" },
          shape: { type: "circle" },
          opacity: { value: 0.7 },
          size: { value: { min: 2, max: 6 } },
          move: { enable: true, speed: 1, outModes: { default: "bounce" } },
        },
        background: { color: "#1a1a2e" },
      }}
    />
  );
}

Quando avvolgi il tuo albero con ParticlesProvider, ogni componente <Particles /> figlio eredita la stessa istanza del motore. Questo evita di reinizializzare il motore ad ogni montaggio.

---

Ottimizzazione Performance

Memorizza sempre le callback e le opzioni per prevenire re-render non necessari.

import { useCallback, useMemo, useState } from "react";
import Particles from "@tsparticles/react";

export default function PerformanceExample() {
  const [visible, setVisible] = useState(true);

  // Memorizza la callback — riferimento stabile tra i render
  const particlesLoaded = useCallback(async (container) => {
    // Chiamata una volta per montaggio del container
    console.log("Container pronto", container?.id);
  }, []);

  // Memorizza l'oggetto opzioni — ricalcolo solo quando le dipendenze cambiano
  const options = useMemo(
    () => ({
      fpsLimit: 60,
      particles: {
        number: { value: 100, density: { enable: true } },
        color: { value: ["#ff6b6b", "#feca57", "#48dbfb"] },
        shape: { type: "circle" },
        opacity: { value: { min: 0.3, max: 0.7 } },
        size: { value: { min: 2, max: 5 } },
        links: {
          enable: true,
          distance: 120,
          color: "random",
          opacity: 0.3,
        },
        move: {
          enable: true,
          speed: 1,
          outModes: { default: "bounce" },
        },
      },
      background: { color: "#0d1117" },
    }),
    [],
  );

  // Riduci la risoluzione del canvas su dispositivi a bassa potenza
  const responsiveOptions = useMemo(
    () => ({
      ...options,
      detectRetina: window.devicePixelRatio <= 2,
      fpsLimit: window.innerWidth < 768 ? 30 : 60,
    }),
    [options],
  );

  return (
    <div>
      <button onClick={() => setVisible((v) => !v)}>{visible ? "Nascondi" : "Mostra"} Particelle</button>
      {visible && <Particles id="perf-particles" particlesLoaded={particlesLoaded} options={responsiveOptions} />}
    </div>
  );
}

Suggerimenti chiave:

• Usa sempre useMemo per l'oggetto options.
• Usa sempre useCallback per il gestore particlesLoaded.
• Riduci fpsLimit su dispositivi mobili.
• Imposta detectRetina: false su dispositivi con rapporto pixel >2x per dimezzare la dimensione del canvas.
• Smonta condizionalmente <Particles /> quando non è visibile.

---

Reactive Behavior

The <Particles> component reacts to prop changes at runtime:

• id, options, or url change → the existing container is destroyed and particles are reloaded with the new values.
• theme change → loadTheme is called on the existing container. This requires the optional @tsparticles/plugin-themes package to be loaded (otherwise it is a safe no-op).

On component unmount, the particles container is automatically destroyed — no orphan animations remain.

Configurazione Personalizzata

Un esempio personalizzato completo che combina forme multiple, interattività, temi e uno sfondo sfumato.

import { useCallback, useMemo } from "react";
import Particles from "@tsparticles/react";

export default function CustomConfig() {
  const particlesLoaded = useCallback(async (container) => {
    console.log("Configurazione personalizzata caricata", container);
  }, []);

  const options = useMemo(
    () => ({
      fullScreen: { enable: true, zIndex: 0 },
      fpsLimit: 60,
      particles: {
        number: { value: 60, density: { enable: true, width: 800, height: 800 } },
        color: {
          value: ["#ff6b6b", "#feca57", "#48dbfb", "#ff9ff3", "#54a0ff"],
        },
        shape: {
          type: ["circle", "triangle", "polygon"],
          options: {
            polygon: { sides: 6 },
          },
        },
        opacity: { value: { min: 0.4, max: 0.8 } },
        size: { value: { min: 3, max: 8 } },
        links: {
          enable: true,
          distance: 200,
          color: "#ffffff",
          opacity: 0.15,
          width: 1,
        },
        move: {
          enable: true,
          speed: 2,
          direction: "none",
          random: true,
          outModes: { default: "out" },
        },
      },
      interactivity: {
        events: {
          onHover: { enable: true, mode: "attract" },
          onClick: { enable: true, mode: "repulse" },
        },
        modes: {
          attract: { distance: 200, duration: 0.4, factor: 1 },
          repulse: { distance: 200, duration: 0.4 },
        },
      },
      background: { color: "#0f0f23" },
      themes: [
        {
          name: "light",
          default: { value: false },
          options: {
            background: { color: "#f0f0f5" },
            particles: {
              color: { value: ["#e74c3c", "#2ecc71", "#3498db", "#f1c40f"] },
              links: { color: "#333333", opacity: 0.2 },
              opacity: { value: { min: 0.5, max: 0.9 } },
            },
          },
        },
      ],
    }),
    [],
  );

  return <Particles id="custom-config" particlesLoaded={particlesLoaded} options={options} />;
}

---

Ora hai coperto i pattern principali per usare tsParticles in React. Ogni esempio è autonomo e pronto per essere inserito in un file componente.