Two regressions surfaced once visible-hyperspace toggled on a real
dev-deploy map:
1. On the zero-turn map the bg holes painted ON TOP of the planet
glyphs — every LOCAL planet looked like a hollow circle of
background colour instead of the planet pixel inside an
unfogged area.
2. On a legacy report with a drive tech that pushes the visibility
radius well past the world dimensions the bg circles overlapped
to cover the entire viewport. Combined with the wrong z-order
the result was a uniformly black canvas with every primitive
hidden.
The per-copy implementation added the fog container via
`copy.addChildAt(container, 0)` and trusted Pixi v8 to insert the
container at the start of the copy's children. Whether by a Pixi
quirk or by some interaction with how `populatePrimitives` orders
its `c.addChild(g)` calls, the fog ended up rendering after every
primitive in practice — the symptoms above are a perfect match for
that ordering.
Restructured the fog rendering so the z-order is structural
rather than relying on `addChildAt`:
- A single `fogLayer: Container` is added to the viewport BEFORE
the nine torus copies. Pixi renders viewport children in order,
so the layer is guaranteed to paint first; every copy renders
on top.
- `fogPaintOps` now emits world-space coordinates with wrap
offsets baked in (9 fog rects + 9 bg circles per visibility
entry in torus mode, 1 + N in no-wrap mode). The renderer
populates `fogLayer` with one `Graphics` per op — no per-copy
iteration on the fog side.
- The previous `fogGraphics: Container[]` closure state is gone.
Each `setVisibilityFog` flip drops every child of `fogLayer`
and rebuilds it. The dispose path drops the children
eagerly before `app.destroy({children: true})` walks the tree.
The fog-paint-ops test exercises the new contract: the no-wrap
path keeps one rect + N circles, the torus path expands to nine
rects + nine wrapped circles per entry (including the seam-fix
case at x = 950).
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Ilia Denisov
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