forked from 1b-agent/fieldcraft-upstream
A datum plane is drawn as the model's extent within it (where it cuts the model's box, in the plane's axes) plus a 5 % margin, a datum axis along the model's extent plus the margin, instead of squares 1.2 diagonals wide. Fit, Home, the standard views and headless pictures frame the model without the datums (they stay inside the clipping radius). The datum selected in the browser is drawn highlighted and on top, even when hidden. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01UhhZMBTviDQxZvwnyP89fo