Geographical Portal for educational purpose BLOG-2. Markless AR


Read blog-1 of the Geographical Portal for educational purpose: Markless AR, for a overview of the project and the current state before this session. 

For the fourth session we simply had to implement the application itself together with the finding the last few assets needed for the experience. For the implementation we yet again used the Unity platform, which just as the previous project, allows simple AR setup in correlation with game-objects. As the google street view failed, we had to make some alterations to the portal object written about below.  

Firstly we added the needed AR camera again to our scene in unity. Do be reminded to run this via united it is needed to have the Android Development setup correctly together with the JDK to run the application. Now furthermore we also needed the different game-objects that we are going to interact with. The following image shows the different game-objects we have included in this project: 

From the shown objects the following are important: 
1. Portal: 
The portal(s) are the doors used to interact between the different scene in the application, meaning each door shows the different scenes with our 3D models in them. This allows the user to open a door into another scene that contains the 3D model 

2. AR Session Origin 
The AR session Origin contains the AR camera used to track the movement of the player Camera, in this case the Android phone connected to the application

3. AR Session 
Compared to the AR Session Origin, the AR Session keeps track of the state of the AR application. This includes stuff like "Life Cycle and Tracking". Image that the AR session is the actual playable scene whilst it being played whilst the Origin is what is needed for that scene, in this case the camera. 

Now the following image simply shows the scene the player starts in. This includes the three doors the player can interact with and finally the needed AR objects. 

To conclude the following images shows how the interaction with the doors and the 3D models in their own scenes look like: 






Here you can see that moving around in real space will also move the angle and view inside the application. 


Author: Jannik Schwarz-Wolf

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