ARPlacer

BDD Spec

As a user I want to place a random object in real world.
I also want to see the distance between AR object and my phone.

Use Cases

1. Scan the real world.

Primary course:

1. When the app opens, system should automatically start scanning the surrounding.
2. System should show feature points.
3. System should show user they can tap to place random object over the real world.

Side Effect:

1. System should continue scanning the area throughout the app’s life time.

Camera tracking normal - Primary Course:

1. System should show user they can tap to place random object over the real world.

AR Session failed - Error Course:

1. Show error
2. Give option to restart session

Camera tracking limited - Error Course:

1. Show error

Camera tracking not available - Error Course:

1. Show error

2. Place a random Object on real world

Primary Course:

1. User taps on screen over real world.
2. System creates an object of random shape and color.
3. System places this object in the tapped position over the real world.

Anchor not available - Error Course:

1. Show error

3. Display distance between object and phone

Object is in the screen - Primary Course:

1. System should calculate the distance between object and phone.
2. System displays the distance over the object in the screen.

Object is not in the screen - Primary Course:

1. System does nothing

App Architecture