Version 1.1 builds upon the solid foundation of version 1.0 by adding a suite of powerful features to enhance usability, accuracy, and personalization for golfers. Here’s a detailed breakdown of what’s new and improved: Slope Calculation: New Feature: Added the ability to calculate and display the slope angle and percentage between the user and the target. Impact: Helps golfers adjust their shots for elevation changes, improving accuracy on uneven terrain. Implementation: A new slopeLabel displays the slope in degrees and percentage (e.g., "Slope: 5.2° (9.1%)"). Trajectory Path Visualization: New Feature: Visualizes the shot trajectory with a parabolic path of yellow spheres from the user to the target. Impact: Provides a visual aid to understand the shot path, especially useful for long distances. Implementation: The addTrajectoryPath method creates a series of SCNSphere nodes to form the trajectory. Personalized Shot Recommendations: New Feature: Offers club and shot type recommendations based on distance, slope, user skill level, and wind speed. Impact: Tailors advice to the golfer’s skill level and preferences, making shot planning more intuitive. Implementation: A recommendationLabel displays suggestions like "Wedge, full swing" or "Driver, adjust for uphill". User Customization: New Feature: Added a settings view (SettingsViewController) where users can select their skill level (Beginner, Intermediate, Advanced) and preferred clubs. Impact: Allows the app to adapt recommendations to the user’s experience and equipment. Implementation: Uses UIPickerView for skill level selection and a checklist for clubs, stored in UserDefaults. Refined User Interface: Enhancement: Split the single label from v1.0 into three dedicated labels: distanceLabel, slopeLabel, and recommendationLabel. Impact: Improves readability and organization, making key information easier to access at a glance. Implementation: Labels are styled with semi-transparent backgrounds and rounded corners, arranged vertically for clarity. Wind Speed Integration: New Feature: Allows users to input wind speed (in m/s) via the settings view, which adjusts the effective distance for shot recommendations. Impact: Accounts for environmental factors, making recommendations more accurate in windy conditions. Implementation: Wind speed adjusts the effective distance by 1% per m/s (e.g., a 5 m/s headwind increases effective distance by 5%). Historical Measurements: New Feature: Added the ability to save and review past measurements in a history view (HistoryViewController). Impact: Lets users track their shots over time, useful for practice and analysis. Implementation: Measurements are saved to UserDefaults with timestamps, and a table view displays them with a "Close" button to dismiss the view. Restored Long-Distance Detection Reliability: Fix: Restored the robust AR session setup from v1.0, including fallbacks for non-LiDAR and minimal configurations. Impact: Ensures reliable long-distance detection, matching v1.0’s performance, by adapting to challenging conditions (e.g., sparse depth data). Implementation: The setupARSession method now attempts LiDAR, non-LiDAR, and minimal configurations if needed. Crosshair Consistency: Fix: Initially modified in early v1.1 iterations, the crosshair was reverted to v1.0’s simple red rectangle (SCNPlane, 0.02x0.02). Impact: Maintains the familiar and effective targeting aid from v1.0, ensuring accurate long-distance alignment. Implementation: The renderer(_:updateAtTime:) method now consistently uses the red rectangle crosshair. Usability Improvements: Enhancement: Added a "Close" button to the history view for easy dismissal. Impact: Improves user experience by making navigation more intuitive. Implementation: A closeButton in HistoryViewController dismisses the modal view when tapped.

~Isaac Eng Gian Khor