docs(links): Add Threejs Journey link to recommended documentation (#2592)

Author: Ahlecss

docs/getting-started/introduction.mdx

@@ -189,6 +189,7 @@ You need to be versed in both React and `three.js` before rushing into this. If
 - [three.js-docs](https://threejs.org/docs)
 - [three.js-examples](https://threejs.org/examples)
 - [three.js-fundamentals](https://threejs.org/manual/#en/fundamentals)
+- [three.js-journey](https://threejs-journey.com)
 - [Discover three.js](https://discoverthreejs.com)
 - [Do's and don'ts](https://discoverthreejs.com/tips-and-tricks) for performance and best practices
 - [react-three-fiber alligator.io tutorial](https://alligator.io/react/react-with-threejs) by [@dghez\_](https://twitter.com/dghez_)

packages/fiber/readme.md

@@ -10,25 +10,23 @@
 
 react-three-fiber is a <a href="https://reactjs.org/docs/codebase-overview.html#renderers">React renderer</a> for threejs.
 
+Build your scene declaratively with re-usable, self-contained components that react to state, are readily interactive and can participate in React's ecosystem.
+
 ```bash
 npm install three @react-three/fiber
 ```
 
-### Why?
-
-Build your scene declaratively with re-usable, self-contained components that react to state, are readily interactive and can tap into React's ecosystem.
-
 #### Does it have limitations?
 
-None. Everything that works in threejs will work here without exception.
+None. Everything that works in Threejs will work here without exception.
 
-#### Can it keep up with frequent updates to threejs?
+#### Is it slower than plain Threejs?
 
-Yes, because it merely expresses threejs in JSX: `<mesh />` becomes `new THREE.Mesh()`, and that happens dynamically. There is no hard dependency on a particular threejs version, it does not wrap or duplicate a single threejs class.
+No. There is no overhead. Components render outside of React. It outperforms Threejs in scale due to Reacts scheduling abilities.
 
-#### Is it slower than plain threejs?
+#### Can it keep up with frequent feature updates to Threejs?
 
-There is no additional overhead. Components participate in the renderloop outside of React.
+Yes. It merely expresses Threejs in JSX: `<mesh />` becomes `new THREE.Mesh()`, and that happens dynamically. If a new Threejs version adds, removes or changes features, it will be available to you instantly without depending on updates to this library.
 
 ### What does it look like?
 
@@ -45,80 +43,127 @@ There is no additional overhead. Components participate in the renderloop outsid
   </tbody>
 </table>
 
-#### Imports first
-
 ```jsx
+import { createRoot } from 'react-dom/client'
 import React, { useRef, useState } from 'react'
-import ReactDOM from 'react-dom'
 import { Canvas, useFrame } from '@react-three/fiber'
-```
 
-#### Define a component
-
-```jsx
 function Box(props) {
-  // This reference will give us direct access to the mesh
-  const mesh = useRef()
-  // Set up state for the hovered and active state
-  const [hovered, setHover] = useState(false)
-  const [active, setActive] = useState(false)
-  // Rotate mesh every frame, this is outside of React without overhead
-  useFrame(() => (mesh.current.rotation.x += 0.01))
-
+  // This reference gives us direct access to the THREE.Mesh object
+  const ref = useRef()
+  // Hold state for hovered and clicked events
+  const [hovered, hover] = useState(false)
+  const [clicked, click] = useState(false)
+  // Subscribe this component to the render-loop, rotate the mesh every frame
+  useFrame((state, delta) => (ref.current.rotation.x += 0.01))
+  // Return the view, these are regular Threejs elements expressed in JSX
   return (
     <mesh
       {...props}
-      ref={mesh}
-      scale={active ? 1.5 : 1}
-      onClick={(event) => setActive(!active)}
-      onPointerOver={(event) => setHover(true)}
-      onPointerOut={(event) => setHover(false)}>
-      <boxGeometry args={[1, 2, 3]} />
+      ref={ref}
+      scale={clicked ? 1.5 : 1}
+      onClick={(event) => click(!clicked)}
+      onPointerOver={(event) => hover(true)}
+      onPointerOut={(event) => hover(false)}>
+      <boxGeometry args={[1, 1, 1]} />
       <meshStandardMaterial color={hovered ? 'hotpink' : 'orange'} />
     </mesh>
   )
 }
+
+createRoot(document.getElementById('root')).render(
+  <Canvas>
+    <ambientLight />
+    <pointLight position={[10, 10, 10]} />
+    <Box position={[-1.2, 0, 0]} />
+    <Box position={[1.2, 0, 0]} />
+  </Canvas>,
+)
 ```
 
-#### Compose the scene
+<details>
+  <summary>Show TypeScript example</summary>
+  
+```bash
+npm install @types/three
+```
 
-Either use `Canvas`, which you can think of as a portal to threejs inside your regular dom graph. Everything within it is a [native threejs element](https://threejs.org/docs). If you want to mix Webgl and Html (react-dom) this is what you should use.
+```tsx
+import * as THREE from 'three'
+import { createRoot } from 'react-dom/client'
+import React, { useRef, useState } from 'react'
+import { Canvas, useFrame, ThreeElements } from '@react-three/fiber'
 
-```jsx
-ReactDOM.render(
+function Box(props: ThreeElements['mesh']) {
+  const ref = useRef<THREE.Mesh>(null!)
+  const [hovered, hover] = useState(false)
+  const [clicked, click] = useState(false)
+  useFrame((state, delta) => (ref.current.rotation.x += 0.01))
+  return (
+    <mesh
+      {...props}
+      ref={ref}
+      scale={clicked ? 1.5 : 1}
+      onClick={(event) => click(!clicked)}
+      onPointerOver={(event) => hover(true)}
+      onPointerOut={(event) => hover(false)}>
+      <boxGeometry args={[1, 1, 1]} />
+      <meshStandardMaterial color={hovered ? 'hotpink' : 'orange'} />
+    </mesh>
+  )
+}
+
+createRoot(document.getElementById('root') as HTMLElement).render(
   <Canvas>
     <ambientLight />
     <pointLight position={[10, 10, 10]} />
     <Box position={[-1.2, 0, 0]} />
     <Box position={[1.2, 0, 0]} />
   </Canvas>,
-  document.getElementById('root'),
 )
 ```
 
-Or use react-three-fibers own `render` function, which is a little more low-level but could save you the extra cost of carrying react-dom. It renders into a dom `canvas` element. Use this for Webgl-only apps.
+Live demo: https://codesandbox.io/s/icy-tree-brnsm?file=/src/App.tsx
 
-```jsx
-import { render } from '@react-three/fiber'
+</details>
+
+<details>
+  <summary>Show React Native example</summary>
+
+This example relies on react 18 and uses `expo-cli`, but you can create a bare project with their template or with the `react-native` CLI.
 
-render(<Scene />, document.querySelector('canvas'))
+```bash
+# Install expo-cli, this will create our app
+npm install expo-cli -g
+# Create app and cd into it
+expo init my-app
+cd my-app
+# Install dependencies
+npm install three @react-three/fiber@beta react@rc
+# Start
+expo start
 ```
 
-<details>
-  <summary>Show TypeScript example</summary>
+Some configuration may be required to tell the Metro bundler about your assets if you use `useLoader` or Drei abstractions like `useGLTF` and `useTexture`:
 
-```tsx
-import { Canvas, MeshProps, useFrame } from '@react-three/fiber'
+```js
+// metro.config.js
+module.exports = {
+  resolver: {
+    sourceExts: ['js', 'jsx', 'json', 'ts', 'tsx', 'cjs'],
+    assetExts: ['glb', 'png', 'jpg'],
+  },
+}
+```
 
-const Box: React.FC<MeshProps> = (props) => {
-  // This reference will give us direct access to the mesh
-  const mesh = useRef<THREE.Mesh>(null!)
-  // Set up state for the hovered and active state
+```tsx
+import React, { useRef, useState } from 'react'
+import { Canvas, useFrame } from '@react-three/fiber/native'
+function Box(props) {
+  const mesh = useRef(null)
   const [hovered, setHover] = useState(false)
   const [active, setActive] = useState(false)
-  // Rotate mesh every frame, this is outside of React without overhead
-  useFrame(() => (mesh.current.rotation.x += 0.01))
-
+  useFrame((state, delta) => (mesh.current.rotation.x += 0.01))
   return (
     <mesh
       {...props}
@@ -127,32 +172,32 @@ const Box: React.FC<MeshProps> = (props) => {
       onClick={(event) => setActive(!active)}
       onPointerOver={(event) => setHover(true)}
       onPointerOut={(event) => setHover(false)}>
-      <boxGeometry args={[1, 2, 3]} />
+      <boxGeometry args={[1, 1, 1]} />
       <meshStandardMaterial color={hovered ? 'hotpink' : 'orange'} />
     </mesh>
   )
 }
-
-ReactDOM.render(
-  <Canvas>
-    <ambientLight />
-    <pointLight position={[10, 10, 10]} />
-    <Box position={[-1.2, 0, 0]} />
-    <Box position={[1.2, 0, 0]} />
-  </Canvas>,
-  document.getElementById('root'),
-)
+export default function App() {
+  return (
+    <Canvas>
+      <ambientLight />
+      <pointLight position={[10, 10, 10]} />
+      <Box position={[-1.2, 0, 0]} />
+      <Box position={[1.2, 0, 0]} />
+    </Canvas>
+  )
+}
 ```
 
 </details>
 
 ---
 
-# Documentation
+# Documentation, tutorials, examples
+
+Visit [docs.pmnd.rs](https://docs.pmnd.rs/react-three-fiber)
 
-- [api.md](/markdown/api.md)
-- [pitfalls.md](/markdown/pitfalls.md)
-- [testing.md](/packages/test-renderer)
+<a href="https://docs.pmnd.rs/react-three-fiber"><img src="/docs/preview.jpg"></a>
 
 # Fundamentals
 
@@ -161,13 +206,14 @@ You need to be versed in both React and Threejs before rushing into this. If you
 1. Make sure you have a [basic grasp of Threejs](https://threejs.org/docs/index.html#manual/en/introduction/Creating-a-scene). Keep that site open.
 2. When you know what a scene is, a camera, mesh, geometry, material, fork the [demo above](https://github.com/pmndrs/react-three-fiber#what-does-it-look-like).
 3. [Look up](https://threejs.org/docs/index.html#api/en/objects/Mesh) the JSX elements that you see (mesh, ambientLight, etc), _all_ threejs exports are native to three-fiber.
-4. Try changing some values, scroll though our [Api](/markdown/api.md) to see what the various settings and hooks do.
+4. Try changing some values, scroll through our [API](https://docs.pmnd.rs/react-three-fiber/API) to see what the various settings and hooks do.
 
 Some reading material:
 
 - [Threejs-docs](https://threejs.org/docs)
 - [Threejs-examples](https://threejs.org/examples)
 - [Threejs-fundamentals](https://threejs.org/manual/#en/fundamentals)
+- [three.js-journey](https://threejs-journey.com)
 - [Discover Threejs](https://discoverthreejs.com)
 - [Do's and don'ts](https://discoverthreejs.com/tips-and-tricks) for performance and best practices
 - [react-three-fiber alligator.io tutorial](https://alligator.io/react/react-with-threejs) by [@dghez\_](https://twitter.com/dghez_)
@@ -180,9 +226,11 @@ Some reading material:
 - [`@react-three/flex`](https://github.com/pmndrs/react-three-flex) &ndash; flexbox for react-three-fiber
 - [`@react-three/xr`](https://github.com/pmndrs/react-xr) &ndash; VR/AR controllers and events
 - [`@react-three/cannon`](https://github.com/pmndrs/use-cannon) &ndash; physics based hooks
+- [`@react-three/a11y`](https://github.com/pmndrs/react-three-a11y) &ndash; real a11y for your scene
 - [`zustand`](https://github.com/pmndrs/zustand) &ndash; state management
 - [`react-spring`](https://github.com/pmndrs/react-spring) &ndash; a spring-physics-based animation library
 - [`react-use-gesture`](https://github.com/pmndrs/react-use-gesture) &ndash; mouse/touch gestures
+- [`leva`](https://github.com/pmndrs/leva) &ndash; create GUI controls in seconds
 
 # How to contribute
 

readme.md

@@ -213,6 +213,7 @@ Some reading material:
 - [Threejs-docs](https://threejs.org/docs)
 - [Threejs-examples](https://threejs.org/examples)
 - [Threejs-fundamentals](https://threejs.org/manual/#en/fundamentals)
+- [three.js-journey](https://threejs-journey.com)
 - [Discover Threejs](https://discoverthreejs.com)
 - [Do's and don'ts](https://discoverthreejs.com/tips-and-tricks) for performance and best practices
 - [react-three-fiber alligator.io tutorial](https://alligator.io/react/react-with-threejs) by [@dghez\_](https://twitter.com/dghez_)