One primitive sub-shape of a body's collision, described in BODY-LOCAL space,
for debug visualization. A simple (non-compound) body has a single part at the
local origin; a compound collider records one part per sub-shape. Triangle
meshes / height-fields / convex hulls are not described here (too detailed to
wireframe cheaply) — they simply produce no debug part.
One primitive sub-shape of a body's collision, described in BODY-LOCAL space, for debug visualization. A simple (non-compound) body has a single part at the local origin; a compound collider records one part per sub-shape. Triangle meshes / height-fields / convex hulls are not described here (too detailed to wireframe cheaply) — they simply produce no debug part.