Visual test surfaced two B.7 MVP issues:
1. Box anchored at abdomen + fixed 48px size meant the rectangle
shrank visually as the camera approached the entity (entity got
bigger on screen, box stayed 48px → triangles ended up inside
the silhouette).
2. Origin was a single point (entity position + 0.9m WorldVerticalOffset)
so the box wasn't centred on the visible body.
Fix: project both feet (WorldPosition) and head (WorldPosition.Z +
EntityHeight=1.8m) to screen space. Apparent pixel height between the
two = box height; halve it for width (WidthHeightRatio=0.5 ≈
humanoid). Box centred at midpoint of projected feet+head.
- Closer entity → bigger projected height → bigger box. Distance
scaling is automatic from the perspective projection.
- Farther entity → smaller projected height → MinScreenHeight=16px
floor prevents the box collapsing to a point.
- Box is screen-axis-aligned (always rectangular on screen) but
sized + positioned by the entity's actual world-space silhouette.
Properties exposed (TriangleSize, EntityHeight, WidthHeightRatio,
MinScreenHeight) so the panel can be tuned per-instance if a future
caller wants short-item boxes (drop EntityHeight to ~0.3m for tapers,
keep WidthHeightRatio at 1.0 for a square box).
Stuck-on-+Je issue (clicking other things still returns +Je) is
Issue #59 — picker over-pick — and unaffected by this commit.
4bc95eca01