Diagnostic overlays

The diagnostics module computes the data; these overlays draw it. Toggle a layer — each reads field state and never mutates it.

Render-mode status

ModeTypeShowsStatus
dots matter particle positions and heat shipped
trails motion path history shipped
links topology connector lines between bodies shipped
streamlines structure continuous field paths shipped
metaballs matter liquid density surface shipped
voronoi matter nearest-site cells shipped
field-lines structure field() geometry shipped
heatmap scalar density accumulation shipped
force-vectors debug actual cause from apply() shipped
contours scalar equal-value isolines shipped
potential scalar wells and gradients shipped
energy scalar kinetic / potential / thermal shipped
topology graph threads, flux links shipped
inspector debug bodies, agents, metrics, contracts shipped
causality debug contribution sources shipped
prediction debug ghost trajectory shipped