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Rafael Mendes 8f4dd5b6c1 feat: alpha in the 3D view; select, delete and reroute wires
3D view: the material's alpha (the Opacity output, else the Base color's
alpha channel) now makes the mesh see-through. Rays composite front to back
through up to eight transparent layers and back faces shade toward the
viewer, so the inside of a cut-out mesh and the environment show through.
view.3d takes `transparency` (default on) and `alphaView`; the Display menu
and a bottom-bar button toggle an unlit view of the alpha channel.

Graph editor: click a wire to select it (Delete or Backspace removes it),
drag a wire to pull a reroute Dot out of it, double-click a wire to drop a
Dot there, right-click a wire for Insert reroute dot and Delete link. The
new graph.wire.insertDot command splits a wire with a Dot in one undo step.

Docs: docs/wires-and-alpha.md (gestures, commands, rendering, tests) with
two snapshot screenshots, plus architecture, parity, control protocol,
README and ATTRIBUTION updates.

Clean-room implementation.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
2026-11-03 14:32:48 -03:00
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