Initial commit: RHINE LAB · ANALYSIS OS：三维界面与动效实验（本仓库不含个人归档索引数据）

2026-09-19 13:04:56 +08:00
commit 3f422218a5
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+// Original footage is 25 fps. App time zero corresponds to video time 5 s.
+// Discrete editorial cuts use frame numbers; spatial motion uses continuous time.
+import { brandTrack, companyTrack, scanTrack, track } from "./boot-tracks";
+import { scanOrbitTrack } from "./boot-orbit-tracks";
+import { bootLogoTrack } from "./boot-logo-tracks";
+export const progress = (t: number, a: number, b: number) =>
+  Math.max(0, Math.min(1, (t - a) / (b - a)));
+export const smooth = (p: number) => p * p * (3 - 2 * p);
+const typed = (text: string, f: number, start: number, end: number) =>
+  text.slice(
+    0,
+    f < start
+      ? 0
+      : Math.min(
+          text.length,
+          1 + Math.floor(((f - start) * (text.length - 1)) / (end - start)),
+        ),
+  );
+const at = (f: number, frames: number[]) => frames.includes(f);
+const accessCounts = [
+  1, 1, 3, 4, 5, 6, 9, 11, 12, 14, 17, 18, 19, 20, 22, 23, 25, 26,
+];
+
+export function bootMotion(appTime: number) {
+  const t = appTime + 5;
+  const f = Math.floor(t * 25 + 0.00001);
+  const step =
+    t < 9.12
+      ? "access"
+      : t < 11.12
+        ? "logo"
+        : t < 19.48
+          ? "auth"
+          : t < 22.76
+            ? "scan"
+            : "welcome";
+  let auth = "";
+  if (f < 363) {
+    auth = typed("ID CONFIRMED", f, 282, 295);
+    if (f >= 320) auth += " : " + typed("JOYCE MOORE", f, 321, 339);
+  } else if (f < 421) auth = typed("REQUEST RECEIVED", f, 367, 389);
+  else {
+    auth = typed("START PROCESSING", f, 423, 440);
+    if (f >= 449)
+      auth += ".".repeat(Math.min(3, 1 + Math.floor((f - 449) / 4)));
+    if (at(f, [479, 485, 486])) auth = "              SING...";
+  }
+  const frame = t * 25;
+  const scan = scanTrack(frame);
+  const scanOrbit = scanOrbitTrack(frame);
+  const scanGlitch = at(f, [525, 526, 528, 529]);
+  const welcomeIntro = [1, 0, 0.28, 0, 1, 0, 0];
+  const flashIndex = f - 569;
+  const exit = smooth(progress(t, 26.56, 26.92));
+  return {
+    t,
+    f,
+    step,
+    auth,
+    access: "ACCESS PERMISSION REQUIRED".slice(
+      0,
+      f < 170 ? 0 : accessCounts[Math.min(17, f - 170)],
+    ),
+    accessOpacity: f >= 170 && f < 227 ? (f === 226 ? 0.25 : 1) : 0,
+    logoOpacity: t >= 9.16 && t < 19.48 ? 1 : 0,
+    logo: bootLogoTrack(frame),
+    logoLetters: typed("RHINE·LAB", f, 232, 255),
+    authOpacity: f >= 281 && f < 487 ? 1 : 0,
+    brand: [0, 1, 2].map((line) => brandTrack(frame, line)),
+    poweredLetters: typed("POWERED BY RHINE LAB", f, 279, 295).length,
+    scanVisible: t >= 19.48 && t < 22.76,
+    scan,
+    scanOrbit,
+    scanRadius: scan.radius,
+    ringScale: scanGlitch ? 1.94 : 1,
+    ringOpacity: scanGlitch
+      ? 0.32
+      : track(
+          [
+            [487, 0],
+            [488, 0.18],
+            [490, 0.6],
+            [493, 1],
+          ],
+          frame,
+        ),
+    ringBlur: scanGlitch ? 2.2 : 0,
+    scanTracking: track(
+      [
+        [487, 40],
+        [492, 28],
+        [497, 18],
+        [500, 14],
+        [505, 8],
+        [510, 4],
+        [515, 1.7],
+        [520, 0.5],
+        [527, 0],
+        [568, 0],
+      ],
+      frame,
+    ),
+    scanFont: 26.5,
+    permissionOpacity:
+      t < 21.8
+        ? progress(t, 19.48, 19.88)
+        : track(
+            [
+              [545, 1],
+              [546, 0.4],
+              [547, 0.3],
+              [548, 0.25],
+              [549, 0.1],
+              [550, 0.04],
+              [551, 0],
+            ],
+            frame,
+          ),
+    ornament: t >= 21.84,
+    coreRadius: scanOrbit.coreRadius,
+    welcomeVisible: t >= 22.76 && t < 26.92,
+    welcomePanel:
+      flashIndex >= 0 && flashIndex < 7 ? welcomeIntro[flashIndex] : 0,
+    welcomeInk:
+      flashIndex >= 0 && flashIndex < 7
+        ? [0, 0, 0.2, 1, 0, 0, 0.25][flashIndex]
+        : 1,
+    companyVisible: f >= 588 && !at(f, [590, 591]),
+    companyMask: at(f, [594, 595]),
+    highlight: companyTrack(frame),
+    databaseOpacity: f < 626 || at(f, [628, 629, 631, 634]) ? 0 : 1,
+    welcomeLogo: f >= 588,
+    welcomeScale: 1 - 0.46 * exit,
+    welcomeOpacity: 1 - Math.pow(exit, 3),
+    exitBlur: 8 * exit,
+    exit,
+    backgroundOpacity: t < 26.92 ? 1 : 0,
+    white: smooth(progress(t, 26.16, 26.88)),
+  };
+}