AR vProtractor

This app is a derivative of AR Needle Guide, an app created for CT-guided procedures.
You can put a virtual protractor using AR technology that can be placed on a desk or the floor. Three different sizes of virtual protractors can be placed in space using AR: a 10cm radius for desktop, a 30cm radius for indoor use, and a 1m radius for outdoor use. The virtual protractor can be placed on the surface of an object that has a feature point.
When you launch the app, please move your iPhone left and right to recognize the space (it will be done faster on models with LiDAR).
Next, select the size of the protractor with the button (8cm, 30cm, 1m).
Then, touch the screen to select the location where you want to place the virtual protractor. Horizontal and vertical protractors will be displayed at the point.
You can turn the virtual protractors left or right with your finger on the screens.
Pressing the "Fix Coordinates" button will fix the horizontal protractor and the base line, allowing you to rotate only the vertical protractor and the its perpendicular reference line left or right with your finger. The magnitude of the rotation of the reference line relative to the horizontal protractor is displayed at the bottom of the screen.
ARKit is used to determine feature point to put virtual protractor and to perform occlusion.