How to label parts of a 3D object in VR

Advanced Framework Pro labels a part of an object with one component, BPC_Label_Simple, placed where the text should float. It points at the part with an arrow or a leader line, turns to face the player and fades with distance, and it moves with the object because it is a component, not an actor in the level. By the end of this you will have named parts on a mesh with labels that update at runtime.

At a glance

Your actor
├─ BPC_Label_Simple "Label_Base"    Title, Use Arrow = true          (label right next to the part)
├─ BPC_Label_Simple "Label_Elbow"   Title, Use Spline = true, Direction,
│                                   Spline Attach Component Tag or Spline Attach Socket
└─ BPC_Label_Info                   title, subtitle, body, button (optional)
Rule: Use Arrow or Use Spline, never both.    Runtime: Update Title

Steps

1. Open the actor Blueprint and add a BPC_Label_Simple per part. Move each component to where its text should sit, a little off the part.
2. Set Title to the part's name.
3. Choose how the label points: Use Arrow for a label right next to its part, or Use Spline for a leader line to a part further away. Use one or the other, not both.
4. For a leader line, set Spline Attach Component Tag or Spline Attach Socket so the line ends on the part itself, and Direction to the side the line leaves the frame.
5. Call Update Title on the component to change the text at runtime.

AFS_UI_Labels_result.pngLabels anchored to three objects at different distances

Notes

BPC_Label_Info is the same component with a title, subtitle, body text and a button, for a full information card rather than a name.

Show labels only when they help: bind to the interaction's highlight delegate and activate the label on hover, or call the component when the player reaches a step.

Labels use the active theme, so they restyle with everything else. For a different frame, swap Frame Widget.

Map_Examples_Labels shows three labels on a robot arm with the arrow, line, colour and scale settings switchable from the table, and an info label on a statue.