Hello, what I see in the video is called a Markerless AR. You dont really need additional plugin for that to be created. Just unity and the device with gyroscope. I did something like that before. Well technically not exactly like that but markerless ar where you can shoot stuff around the room. If you are interested I can make you an example just like that on the video. You dont need to award the project to me yet. I will give you the sample and if you liked it then you can commit on working with me. Just give me a heads up so I can start on making the sample. Also I also work on something that does the measurement thingy so I can easily emplement that too. You can check it on my profile called the Floor Planner.
- Edit: although for better floor tracking, you do need Vuforia. which is already implemented in unity and just needs to be enabled.