polish: scene nits — live-lens yard, square stacks, deck-clear billboard, two-layer lamps, flare reach, phone traffic and exposure

tests/unit/expressway-lamps.test.ts

@@ -0,0 +1,35 @@
+import { describe, expect, it } from 'vitest';
+import { SceneResourceBag } from '@/scene/resources';
+import { renderQualityFor } from '@/scene/render-quality';
+import { createExpressway, PYLON_CORE_GAIN, PYLON_HALO_GAIN } from '@/scene/world/expressway';
+
+interface Node {
+  name: string;
+  count?: number;
+  material?: { blending: number; fragmentShader?: string };
+}
+const children = (group: unknown) => (group as { children: Node[] }).children;
+const luminance = ([r, g, b]: readonly number[]) => 0.2126 * r! + 0.7152 * g! + 0.0722 * b!;
+const CYAN = [0.02, 0.78, 0.93] as const;
+const MAGENTA = [1.0, 0.025, 0.34] as const;
+
+describe('expressway pylon lamps', () => {
+  it('draws a two-layer lamp: a core and a soft additive halo for every pylon strip', () => {
+    const world = createExpressway(new SceneResourceBag(), renderQualityFor('high', 1, false));
+    const core = children(world.group).find((child) => child.name === 'recessed-pylon-lights')!;
+    const halo = children(world.group).find((child) => child.name === 'pylon-light-halos')!;
+    expect(halo.count).toBe(core.count);
+    expect(halo.material!.blending).toBe(core.material!.blending);
+    expect(halo.material!.fragmentShader).toContain('across');
+  });
+
+  it('keeps the core under the bloom threshold at full drive energy, so the hue survives the tone curve', () => {
+    // Core: hue * (1.3 + energy 0.5) * gain; core + halo peak stays under 0.85 luminance too.
+    for (const hue of [CYAN, MAGENTA]) {
+      const peak = 1.8 * PYLON_CORE_GAIN;
+      expect(luminance(hue.map((v) => v * peak))).toBeLessThan(0.85);
+      expect(luminance(hue.map((v) => v * 1.8 * (PYLON_CORE_GAIN + PYLON_HALO_GAIN)))).toBeLessThan(1.2);
+    }
+    expect(PYLON_HALO_GAIN).toBeLessThan(PYLON_CORE_GAIN);
+  });
+});