Created
May 25, 2019 18:54
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An Example Of Animating SCNText With A Typewriter Like Effect
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| //1. Timer To Animate Our Text | |
| var animationTimer: Timer? | |
| //2. Variable To Store The Current Time | |
| var time:Int = 0 | |
| /// Animates The Presentation Of SCNText To Give An Appearance Of A Typing Effect | |
| /// | |
| /// - Parameters: | |
| /// - textGeometry: SCNText | |
| /// - text: String | |
| /// - completed: () -> Void | |
| func animateTextGeometry(_ textGeometry: SCNText, withText text: String, completed: @escaping () -> Void ){ | |
| //1. Get All The Characters From The Text | |
| let characters = Array(text) | |
| //2. Run The Animation | |
| animationTimer = Timer.scheduledTimer(withTimeInterval: 0.3, repeats: true) { [weak self] timer in | |
| //a. If The Current Time Doesnt Equal The Count Of Our Characters Then Continue To Animate Our Text | |
| if self?.time != characters.count { | |
| let currentText: String = textGeometry.string as! String | |
| textGeometry.string = currentText + String(characters[(self?.time)!]) | |
| self?.time += 1 | |
| }else{ | |
| //b. Invalide The Timer, Reset The Variables & Escape | |
| timer.invalidate() | |
| self?.time = 0 | |
| completed() | |
| } | |
| } | |
| } |
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