Update README.md

Author: onl1ner

Hands.playgroundbook/Edits/UserEdits.diffpack/Manifest.plist

@@ -24,6 +24,10 @@
 				<key>File</key>
 				<string>Chapters/Chapter1.playgroundchapter/UserManifest.plist</string>
 			</dict>
+			<dict>
+				<key>File</key>
+				<string>UserModules/Main.playgroundmodule/Sources/CGPoint + Extension.swift</string>
+			</dict>
 		</array>
 		<key>Modified</key>
 		<array>
@@ -35,7 +39,12 @@
 			</dict>
 		</array>
 		<key>Removed</key>
-		<array/>
+		<array>
+			<dict>
+				<key>File</key>
+				<string>UserModules/Main.playgroundmodule/Sources/CGPoint.swift</string>
+			</dict>
+		</array>
 		<key>Replaced</key>
 		<array/>
 	</dict>

Hands.playgroundbook/Edits/UserEdits.diffpack/UserModules/Main.playgroundmodule/Sources/CGPoint + Extension.swift

@@ -0,0 +1,20 @@
+import CoreGraphics
+
+extension CGPoint {
+    
+    public func distance(from point : CGPoint) -> CGFloat {
+        return hypot(point.x - self.x, point.y - self.y)
+    }
+    
+    public static func angleBetween(first: CGPoint, second: CGPoint, third: CGPoint) -> Double {
+        let firstVector = CGVector(dx: first.x - second.x, dy: first.y - second.y)
+        let secondVector = CGVector(dx: third.x - second.x, dy: third.y - second.y)
+        
+        let firstTheta = atan2(firstVector.dy, firstVector.dx)
+        let secondTheta = atan2(secondVector.dy, secondVector.dx)
+        
+        let angle = firstTheta - secondTheta
+        
+        return (Double(angle) * 180.0) / Double.pi
+    }
+}

README.md

@@ -20,6 +20,9 @@ In order to determine which gesture was shown by the user, the application recog
 
 I really like the new Apple SwiftUI framework for creating interfaces and its declarative style, which makes it easy to create cool interfaces, but here I decided to stop at UIKit, because I have more experience in using this technology. I also used the Vision framework to recognize the hand gestures that the user shows.
 
+## Screenshots
+![](https://github.com/onl1ner/onl1ner/blob/master/Resources/Hands/Screenshots.png?raw=true)
+
 ## License
 **Hands** is under the terms and conditions of the MIT license.