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docs: add PlateView remnant visualization to remnant finder spec

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Active remnant shown as dashed orange rectangle on PlateView during
iterative fill workflow.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
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AJ Isaacs
2026-03-16 12:26:23 -04:00
parent 384d53da47
commit 190f2a062f
1 changed files with 6 additions and 0 deletions
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docs/superpowers/specs/2026-03-16-remnant-finder-design.md
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@@ -132,6 +132,12 @@ var remnants = finder.FindRemnants(minDimension);
Any caller that previously relied on `TryRemainderImprovement` getting called automatically inside `Fill()` will need to implement the iterative loop: fill -> find remnants -> fill remnant -> repeat.
## PlateView Remnant Visualization
When a remnant is being filled (during the iterative workflow), the `PlateView` control should display the active remnant's outline as a dashed rectangle in a contrasting color (orange). The outline persists while that remnant is being filled and disappears when the next remnant starts or the fill completes.
**Implementation:** Add a `Box? ActiveRemnant` property to `PlateView`. When set, the paint handler draws a dashed rectangle at that location. The caller sets it before filling a remnant and clears it (sets to `null`) when done or moving to the next remnant. The `NestProgress` class gets a new `Box? ActiveRemnant` property so the progress pipeline can carry the current remnant box from the engine caller to the UI.
## Future
The edge projection algorithm is embarrassingly parallel — each candidate rectangle's overlap check is independent. This makes it a natural fit for GPU acceleration via `OpenNest.Gpu` in the future.