From 0ffaa7fc29bd513fe3662647e2e89bdf7018af84 Mon Sep 17 00:00:00 2001
From: Marc Rousavy <me@mrousavy.com>
Date: Tue, 9 Jan 2024 17:28:05 +0100
Subject: [PATCH] docs: Add tap to focus example

---
 docs/docs/guides/FOCUSING.mdx | 39 ++++++++++++++++++++++++++++++++++-
 docs/docs/guides/ZOOMING.mdx  |  7 +++----
 2 files changed, 41 insertions(+), 5 deletions(-)

diff --git a/docs/docs/guides/FOCUSING.mdx b/docs/docs/guides/FOCUSING.mdx
index 408cd98..841b2a3 100644
--- a/docs/docs/guides/FOCUSING.mdx
+++ b/docs/docs/guides/FOCUSING.mdx
@@ -10,7 +10,7 @@ To focus the camera to a specific point, simply use the Camera's [`focus(...)`](
 await camera.current.focus({ x: tapEvent.x, y: tapEvent.y })
 ```
 
-The focus function expects a [`Point`](/docs/api/interfaces/Point) parameter which represents the location relative to the Camera view where you want to focus the Camera to (in _points_). If you use [react-native-gesture-handler](https://docs.swmansion.com/react-native-gesture-handler/), this will consist of the [`x`](https://docs.swmansion.com/react-native-gesture-handler/docs/next/gesture-handlers/api/tap-gh/#x) and [`y`](https://docs.swmansion.com/react-native-gesture-handler/docs/next/gesture-handlers/api/tap-gh/#y) properties of the tap event payload.
+The focus function expects a [`Point`](/docs/api/interfaces/Point) parameter which represents the location relative to the Camera view where you want to focus the Camera to (in _points_). If you use [react-native-gesture-handler](https://github.com/software-mansion/react-native-gesture-handler/), this will consist of the [`x`](https://docs.swmansion.com/react-native-gesture-handler/docs/next/gesture-handlers/api/tap-gh/#x) and [`y`](https://docs.swmansion.com/react-native-gesture-handler/docs/next/gesture-handlers/api/tap-gh/#y) properties of the tap event payload.
 
 So for example, `{ x: 0, y: 0 }` will focus to the upper left corner, while `{ x: VIEW_WIDTH, y: VIEW_HEIGHT }` will focus to the bottom right corner.
 
@@ -20,6 +20,43 @@ Focussing adjusts auto-focus (AF) and auto-exposure (AE).
 `focus(...)` will fail if the selected Camera device does not support focusing (see [`CameraDevice.supportsFocus`](/docs/api/interfaces/CameraDevice#supportsfocus))
 :::
 
+## Example (Gesture Handler)
+
+This is an Example on how to use [react-native-gesture-handler](https://github.com/software-mansion/react-native-gesture-handler/) to focus the Camera to a specific point on the screen:
+
+```tsx
+import { Camera, useCameraDevice } from 'react-native-vision-camera'
+import { Gesture, GestureDetector } from 'react-native-gesture-handler'
+
+export function App() {
+  const camera = useRef<Camera>(null)
+  const device = useCameraDevice('back')
+
+  const focus = useCallback((point: Point) => {
+    const c = camera.current
+    if (c == null) return
+    c.focus()
+  }, [])
+
+  const gesture = Gesture.Tap()
+    .onEnd(({ x, y }) => {
+      runOnJS(focus)({ x, y })
+    })
+
+  if (device == null) return <NoCameraDeviceError />
+  return (
+    <GestureDetector gesture={gesture}>
+      <Camera
+        ref={camera}
+        style={StyleSheet.absoluteFill}
+        device={device}
+        isActive={true}
+      />
+    </GestureDetector>
+  )
+}
+```
+
 <br />
 
 #### 🚀 Next section: [Exposure](exposure)
diff --git a/docs/docs/guides/ZOOMING.mdx b/docs/docs/guides/ZOOMING.mdx
index 0bc7b93..8937c44 100644
--- a/docs/docs/guides/ZOOMING.mdx
+++ b/docs/docs/guides/ZOOMING.mdx
@@ -43,8 +43,7 @@ A Camera's `zoom` property is represented in a **logarithmic scale**. That means
 
 The above example only demonstrates how to animate the `zoom` property. To actually implement pinch-to-zoom or pan-to-zoom, take a look at the [VisionCamera example app](https://github.com/mrousavy/react-native-vision-camera/tree/main/package/example), the pinch-to-zoom gesture can be found [here](https://github.com/mrousavy/react-native-vision-camera/blob/main/package/example/src/views/CaptureButton.tsx#L189-L208), and the pan-to-zoom gesture can be found [here](https://github.com/mrousavy/react-native-vision-camera/blob/d8551792e97eaa6fa768f54059ffce054bf748d9/example/src/views/CaptureButton.tsx#L185-L205). They implement a real world use-case, where the maximum zoom value is clamped to a realistic value, and the zoom responds very gracefully by using a logarithmic scale.
 
-
-## Implementation (Reanimated)
+## Example (Reanimated + Gesture Handler)
 
 While you can use any animation library to animate the `zoom` property (or use no animation library at all) it is recommended to use [react-native-reanimated](https://github.com/software-mansion/react-native-reanimated) to achieve best performance. Head over to their [Installation guide](https://docs.swmansion.com/react-native-reanimated/docs/installation) to install Reanimated if you haven't already.
 
@@ -61,8 +60,8 @@ While you can use any animation library to animate the `zoom` property (or use n
 The following example implements a pinch-to-zoom gesture using [react-native-gesture-handler](https://github.com/software-mansion/react-native-gesture-handler/) and [react-native-reanimated](https://github.com/software-mansion/react-native-reanimated):
 
 ```tsx
-import { Camera, useCameraDevice, CameraProps } from "react-native-vision-camera"
-import Reanimated, { useAnimatedProps, useSharedValue } from "react-native-reanimated"
+import { Camera, useCameraDevice, CameraProps } from 'react-native-vision-camera'
+import Reanimated, { useAnimatedProps, useSharedValue } from 'react-native-reanimated'
 import { Gesture, GestureDetector } from 'react-native-gesture-handler'
 
 Reanimated.addWhitelistedNativeProps({