"Geo Protractor" is an Android app that allows users to measure angles between two points on the geo sphere using augmented reality. By utilizing device sensors like the accelerometer, gyroscope, or magnetic field sensor, the app displays a sphere with azimuth and elevation lines over the camera view. Users can place markers to see the angle needed to rotate between points, as well as the difference in azimuth and elevation. Please note that the measurements are for indication only due to potential sensor inaccuracies.
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Measure angles between two points on the geo sphere with the camera and augmented reality.
Device orientation is obtained with the accelerometer and gyroscope, or with the accelerometer and magnetic field sensor. Each method has advantages and disadvantages and can be selected with the gyro or magnet buttons (only if your device has the necessary sensors detected).
A sphere with azimuth and angle of elevation lines is shown overlaying the camera view. Two positions can be set putting markers onto the view. The angle required to rotate from one to the other is shown, as is the difference in azimuth and angle of elevation between the two points.
For Indication Only. Note that in gyroscope mode, the azimuth will drift slowly. In magnetic mode, the Earths magnetic field can be distorted by nearby metallic objects and give incorrect azimuth readings. For Indication Only.
User reviews
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spammy, or outdated.
Pros
Useful for drone preflight and planning
Other features work very well
Developers are praised for their passion for maths, science, and gadgets
Cons
Does not work on newer Android versions, particularly after upgrading to Android Pie
Issues with magnetic sensor initialization
Blank camera screen and improper rendering on certain devices
Most mentioned
Problems with the magnetic sensor
App functionality diminished after Android Pie upgrade
Camera view overlay blocking controls
User reviews
Does not work. Also cannot r ad Samsung magnetometer. Need azimuth offset input Need true values
..as a longterm fan of Keuwl (line) i'm sad that with the switch of the Phone this app started to missbehave.. PNG (alpha) Geo Overlay is not redered, instead RAW output from Rear Camera is shown.. I may falsely suppose the problem is in .renderer.camera class but pls release Screen Ratio fix for non 16:9 devices.. thnx.. 1920 x 1080 is a 16:9 21:9 ("Twenty One by Nine") is a consumer electronics (CE) marketing term to describe the ultrawide aspect ratio.. source: wikipedia