preliminary experiments with AR in Unreal for REMAP MITHC project

Builds upon Unreal's starter AR template to

• hide/show object using Actor tags and debug menu button

• trigger crossfade sequence of material opacity

1. copied starter blueprint BP_Placeable to create BP_PlaceableSphere and BP_PlaceableCone

2. under details of the Asset add Actor Tags, (Shape and Sphere or Cone)

3. update apps hit detection mechanism in BP_ARPawn to spawn custom Placeable objects instead of default randomized shapes

4. add buttons to debug menu for toggling visibility of cones and spheres

• create function attached to button that updates a visibility boolean and text on the button

• attached to debug menu's event tick pull from the visibility boolean, use Get All Actors with Tag and For Loop to Set Actor Hidden in Game according to boolean

1. create a scalar Material Parameter Collection

2. plug it into opacity of material you are using

3. create a level sequence that changes Material Parameter Collection scalar from 1 to 0

4. create level sequence player, drag Play Blueprint out of Exec and connect Out Actor as target