move_nodes_with takes the region's quality before the move from an earlier run
and a coarser guard bisection, for a live preview; each pass measures the
elements in parallel (fixed blocks). The relaxation's state sizes its elements
(a certified check each) only for the strong mode, which alone uses the size:
on the crank arm's hex20 mesh that was 114 ms of every 130 ms preview.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01UhhZMBTviDQxZvwnyP89fo
relax::move_weights gives each node its share of a displacement (the grabbed
nodes all of it, the nodes within the radius strength x falloff, or the
harmonic function of the element-edge graph, zero beyond the radius and at
held nodes); relax::move_nodes applies it as the relaxation's constraints let
each node move (faces in UV, edges along, vertices held), scaled back by
bisection until no valid element inverts, and reports each element's scaled
Jacobian before and after.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01UhhZMBTviDQxZvwnyP89fo
