Release God's Eye View as open source

src/data/focusResumeGate.test.mjs

@@ -0,0 +1,128 @@
+import { test } from 'node:test';
+import assert from 'node:assert/strict';
+import { applyVesselFocusDeemphasis } from './aisLiveVessels.js';
+import { applyCctvFocusDeemphasis } from './cctv.js';
+import { applySatellitePointFocusDeemphasis } from './satellites.js';
+import { DEFAULT_FOCUS_DEEMPHASIS_PARAMS } from './focusDeemphasis.js';
+
+const params = { ...DEFAULT_FOCUS_DEEMPHASIS_PARAMS, paddingPx: 0 };
+const target = {
+  screenRect: { left: 40, top: 40, right: 60, bottom: 60 },
+  paddingPx: 0,
+  cameraDistance: 1000,
+};
+
+function color(alpha = 1, rgb = 'base') {
+  return {
+    alpha,
+    rgb,
+    withAlpha(nextAlpha) {
+      return color(nextAlpha, rgb);
+    },
+  };
+}
+
+function assertResumeGate(name, makePass) {
+  test(`${name} gate restores a settled dim contact after untrack`, () => {
+    const { pass, readAlpha } = makePass();
+    let activeCount = 0;
+    const tick = (nowMs, focusTarget) => {
+      const result = pass({ nowMs, target: focusTarget, previousActiveCount: activeCount });
+      activeCount = result.activeCount;
+      return result;
+    };
+
+    assert.equal(tick(0, target).ran, true);
+    const settled = tick(params.attackMs + 1, target);
+    assert.equal(settled.activeCount, 1);
+    assert.equal(readAlpha(), params.dimFloor);
+
+    const releaseStart = tick(params.attackMs + 1, null);
+    assert.equal(releaseStart.ran, true, 'active count keeps the no-target release pass alive');
+    assert.equal(releaseStart.activeCount, 1);
+
+    const restored = tick(params.attackMs + params.releaseMs + 2, null);
+    assert.equal(restored.ran, true);
+    assert.equal(restored.activeCount, 0);
+    assert.equal(readAlpha(), 1);
+
+    assert.equal(tick(params.attackMs + params.releaseMs + 82, null).ran, false);
+  });
+}
+
+assertResumeGate('vessel', () => {
+  const billboard = {
+    position: { x: 1, y: 2, z: 3 },
+    show: true,
+    width: 32,
+    height: 32,
+    scale: 1,
+    color: color(),
+  };
+  return {
+    pass: ({ nowMs, target: focusTarget, previousActiveCount }) => (
+      applyVesselFocusDeemphasis({
+        records: [{ billboard }],
+        target: focusTarget,
+        previousActiveCount,
+        nowMs,
+        screenPositionFor: () => ({ x: 50, y: 50 }),
+        cameraDistanceFor: () => 1200,
+        params,
+      })
+    ),
+    readAlpha: () => billboard.color.alpha,
+  };
+});
+
+assertResumeGate('CCTV', () => {
+  const billboard = {
+    position: { x: 1, y: 2, z: 3 },
+    show: true,
+    width: 24,
+    height: 24,
+    scale: 1,
+    color: color(),
+  };
+  const record = { camera: { id: 'cam-1' }, billboard };
+  return {
+    pass: ({ nowMs, target: focusTarget, previousActiveCount }) => (
+      applyCctvFocusDeemphasis({
+        records: [record],
+        target: focusTarget,
+        previousActiveCount,
+        nowMs,
+        screenPositionFor: () => ({ x: 50, y: 50 }),
+        cameraDistanceFor: () => 1200,
+        baseColorFor: () => color(),
+        params,
+      })
+    ),
+    readAlpha: () => billboard.color.alpha,
+  };
+});
+
+assertResumeGate('satellite', () => {
+  const point = {
+    position: { x: 1, y: 2, z: 3 },
+    show: true,
+    pixelSize: 6,
+    color: color(),
+  };
+  return {
+    pass: ({ nowMs, target: focusTarget, previousActiveCount }) => (
+      applySatellitePointFocusDeemphasis({
+        points: new Map([[42, point]]),
+        trackedId: null,
+        target: focusTarget,
+        previousActiveCount,
+        nowMs,
+        screenPositionFor: () => ({ x: 50, y: 50 }),
+        cameraDistanceFor: () => 1200,
+        baseColorFor: () => color(),
+        params,
+      })
+    ),
+    readAlpha: () => point.color.alpha,
+  };
+});