// ===== demos/rhythm/panel-grid-moves/ComicPanelSplit.tsx =====
// comic-panel-split｜漫画分格并列
// FakeDashboard A（加 KPI 数字块）全屏 20f → 咔咔咔切成 3 个斜线分格
// （12° 斜边，10px 白缝 + 墨线描边），逐格 2f 间隔弹入（3f scale 1.06→1
// + 加深脉冲）。三格 = 同页面三机位：全景 1x / 卡片特写 1.9x / 数字区
// 特写 2.6x。定格 18f 各格缓慢微推近保持活 → 第三格斜边框 12f out-cubic
// 扩张吃掉全屏成为下一镜特写。57f 起摘罩（特写直出、分格结构与缝线
// 全部卸载），57–150f 真静止 93f ≥ 40f。帧确定，无随机源。
import React from 'react';
import { AbsoluteFill, useCurrentFrame, interpolate, Easing } from 'remotion';
import { FakeDashboard, G } from '../../_fixtures/Fixtures';

const SPLIT = 20;              // 全屏 A 结束、开始分格
const POP = 3;                 // 每格弹入 3f
const STAGGER = 2;             // 逐格 2f 间隔
const HOLD_END = 45;           // 27f 弹完 + 定格 18f
const EXPAND_END = 57;         // 第三格 12f 扩张结束
// 57–150 真静止 93f

// 斜边 12°：tan(12°)×1080 ≈ 230，顶边比底边右移 230
// 缝 10px（水平半宽 5px）
// 边界1：顶 750 / 底 520；边界2：顶 1405 / 底 1175
const outCubic = Easing.out(Easing.cubic);

// 页面 = FakeDashboard A + 左上卡片内 KPI 数字块（给"数字区特写"一个锚点）
const PageA: React.FC = () => (
  <div style={{ width: 1920, height: 1080, position: 'relative' }}>
    <FakeDashboard variant="A" />
    <div style={{
      position: 'absolute', left: 328, top: 320, width: 380, height: 160,
      background: G.card, borderRadius: 12, display: 'flex', flexDirection: 'column',
      alignItems: 'center', justifyContent: 'center', gap: 8,
    }}>
      <div style={{ fontFamily: 'Helvetica, Arial, sans-serif', fontWeight: 800, fontSize: 96, color: G.ink, letterSpacing: -2, lineHeight: 1 }}>
        1,284
      </div>
      <div style={{ height: 10, width: 150, background: G.mid, borderRadius: 5 }} />
    </div>
  </div>
);

type PanelSpec = {
  clip: (f: number) => string; // clip-path polygon
  centroidX: number;           // 弹入缩放原点
  originX: number; originY: number; // 内容变换原点（焦点）
  baseScale: number;           // 机位倍率
  tx: number; ty: number;      // 焦点搬到格中心的位移
  z: number;
};

export const ComicPanelSplit: React.FC = () => {
  const frame = useCurrentFrame();

  // ===== 摘罩：扩张完成后特写直出，分格结构 / 缝线全部卸载 =====
  if (frame >= EXPAND_END) {
    return (
      <AbsoluteFill style={{ background: G.bg, overflow: 'hidden' }}>
        <div style={{
          width: 1920, height: 1080,
          transform: 'translate(442px, 140px) scale(2.6)',
          transformOrigin: '518px 400px',
        }}>
          <PageA />
        </div>
      </AbsoluteFill>
    );
  }

  // ===== 阶段 1：全屏 A =====
  if (frame < SPLIT) {
    return (
      <AbsoluteFill style={{ background: G.bg }}>
        <PageA />
      </AbsoluteFill>
    );
  }

  // ===== 阶段 2/3：分格 + 第三格扩张 =====
  // 定格期微推近（27–45f 线性，很缓）
  const push = interpolate(frame, [SPLIT + 2 * STAGGER + POP, HOLD_END], [0, 1], {
    extrapolateLeft: 'clamp', extrapolateRight: 'clamp',
  });
  // 第三格扩张进度（扩散用 out-cubic）
  const ex = interpolate(frame, [HOLD_END, EXPAND_END], [0, 1], {
    extrapolateLeft: 'clamp', extrapolateRight: 'clamp', easing: outCubic,
  });

  // 第三格左斜边（= 边界2 吃屏轨迹）
  const e3Top = 1410 + ex * (-60 - 1410);    // 1410 → -60
  const e3Bot = 1180 + ex * (-290 - 1180);   // 1180 → -290

  const panels: PanelSpec[] = [
    { // 全景 1x
      clip: () => 'polygon(0px 0px, 745px 0px, 515px 1080px, 0px 1080px)',
      centroidX: 315, originX: 960, originY: 540,
      baseScale: 1 + push * 0.03, tx: 0, ty: 0, z: 1,
    },
    { // 卡片特写 1.9x（中上卡片）
      clip: () => 'polygon(755px 0px, 1400px 0px, 1170px 1080px, 525px 1080px)',
      centroidX: 962, originX: 1070, originY: 371,
      baseScale: 1.9 + push * 0.055, tx: -108, ty: 169, z: 1,
    },
    { // 数字区特写 2.6x（KPI 块），扩张时焦点从格中心搬到屏中心
      clip: () => `polygon(${e3Top}px 0px, 1920px 0px, 1920px 1080px, ${e3Bot}px 1080px)`,
      centroidX: 1607, originX: 518, originY: 400,
      // 扩张时 push 增量退掉，scale 收敛回 2.6（与摘罩帧完全一致）
      baseScale: 2.6 + push * 0.08 * (1 - ex), tx: 1089 + ex * (442 - 1089), ty: 140, z: 3,
    },
  ];

  // 缝线透明度：边界1 随第 2 格弹入出现、扩张期被吃前线性淡出；
  // 边界2 随第 3 格弹入出现、扩张末 4f 线性淡出（消散用线性）
  const seam1O = Math.min(
    interpolate(frame, [SPLIT + STAGGER, SPLIT + STAGGER + 2], [0, 1], { extrapolateLeft: 'clamp', extrapolateRight: 'clamp' }),
    interpolate(frame, [HOLD_END, HOLD_END + 3], [1, 0], { extrapolateLeft: 'clamp', extrapolateRight: 'clamp' }),
  );
  const seam2O = Math.min(
    interpolate(frame, [SPLIT + 2 * STAGGER, SPLIT + 2 * STAGGER + 2], [0, 1], { extrapolateLeft: 'clamp', extrapolateRight: 'clamp' }),
    interpolate(frame, [EXPAND_END - 4, EXPAND_END], [1, 0], { extrapolateLeft: 'clamp', extrapolateRight: 'clamp' }),
  );

  return (
    <AbsoluteFill style={{ background: '#ffffff' }}>
      {panels.map((p, i) => {
        const start = SPLIT + i * STAGGER;
        if (frame < start) return null; // 未弹入不渲染
        // 弹入：3f scale 1.06→1 + 加深脉冲
        const pop = interpolate(frame, [start, start + POP], [0, 1], {
          extrapolateLeft: 'clamp', extrapolateRight: 'clamp', easing: outCubic,
        });
        const popScale = 1.06 - 0.06 * pop;
        const pulse = 0.3 * (1 - pop);
        return (
          <div key={i} style={{
            position: 'absolute', inset: 0, zIndex: p.z,
            clipPath: p.clip(frame),
            transform: `scale(${popScale})`,
            transformOrigin: `${p.centroidX}px 540px`,
          }}>
            <div style={{
              width: 1920, height: 1080,
              transform: `translate(${p.tx}px, ${p.ty}px) scale(${p.baseScale})`,
              transformOrigin: `${p.originX}px ${p.originY}px`,
            }}>
              <PageA />
            </div>
            {pulse > 0.005 && (
              <div style={{ position: 'absolute', inset: 0, background: `rgba(0,0,0,${pulse})` }} />
            )}
          </div>
        );
      })}
      {/* 斜缝：白缝命门 + 墨线描边（暗 16 下、白 10 上 → 两侧各 3px 墨边） */}
      {(seam1O > 0.005 || seam2O > 0.005) && (
        <svg width={1920} height={1080} style={{ position: 'absolute', inset: 0, zIndex: 5, pointerEvents: 'none' }}>
          {seam1O > 0.005 && (
            <g opacity={seam1O}>
              <line x1={750} y1={-10} x2={520} y2={1090} stroke="#2f2f2f" strokeWidth={16} />
              <line x1={750} y1={-10} x2={520} y2={1090} stroke="#ffffff" strokeWidth={10} />
            </g>
          )}
          {seam2O > 0.005 && (
            <g opacity={seam2O}>
              <line x1={e3Top - 5} y1={-10} x2={e3Bot - 5} y2={1090} stroke="#2f2f2f" strokeWidth={16} />
              <line x1={e3Top - 5} y1={-10} x2={e3Bot - 5} y2={1090} stroke="#ffffff" strokeWidth={10} />
            </g>
          )}
        </svg>
      )}
    </AbsoluteFill>
  );
};


// ===== demos/rhythm/panel-grid-moves/FlipGridReflow.tsx =====
// flip-grid-reflow —— 网格 FLIP 重排
// 6 张 Card 初始横排一行（marquee 式，屏心偏上）静止 30f，节拍点集体换位：
// 每卡沿直线飞向 3×2 网格目标位（预写两套坐标表），scale 1→1.28，
// delay = 卡索引×1.5f 微错峰，16f inOut(cubic) + 落定 3f 过冲 1.02。
// 全部落定后整体加深脉冲收束。收尾真静止 ≥40f。
import React from 'react';
import { useCurrentFrame, interpolate, Easing } from 'remotion';
import { G, Card, TitleBlock } from '../../_fixtures/Fixtures';

const CARD_W = 280;
const CARD_H = 170;
const N = 6;

// ---- 坐标表 A：横排一行（卡间 24px，屏心偏上）----
// 总宽 6*280 + 5*24 = 1800，x0 = 60；中心 y = 330
const ROW_Y = 330;
const ROW_CENTERS: Array<[number, number]> = Array.from({ length: N }, (_, i) => [
  60 + CARD_W / 2 + i * (CARD_W + 24),
  ROW_Y,
]); // x: 200, 504, 808, 1112, 1416, 1720

// ---- 坐标表 B：3×2 网格（卡放大 1.28 → 358.4×217.6，网格间距 30px）----
// 网格总宽 3*358.4 + 2*30 = 1135.2 → x0 = 392.4；总高 2*217.6 + 30 = 465.2 → y0 = 307.4
const GC = [571.6, 960, 1348.4]; // 列中心
const GR = [416.2, 663.8]; // 行中心
// 交错映射：偶数索引去上排、奇数去下排（每卡直线飞行、互不对穿）
const GRID_CENTERS: Array<[number, number]> = [
  [GC[0], GR[0]], // card0 → 上左
  [GC[0], GR[1]], // card1 → 下左
  [GC[1], GR[0]], // card2 → 上中
  [GC[1], GR[1]], // card3 → 下中
  [GC[2], GR[0]], // card4 → 上右
  [GC[2], GR[1]], // card5 → 下右
];

const BEAT = 30; // 节拍点
const STAGGER = 1.5; // 每卡延迟
const MOVE = 16; // 飞行帧数
const SETTLE = 3; // 落定过冲帧数
const SCALE_END = 1.28;
const OVERSHOOT = 1.02;
// 末卡完全落定：30 + 5*1.5 + 16 + 3 = 56.5
const ALL_SETTLED = BEAT + (N - 1) * STAGGER + MOVE + SETTLE; // 56.5

// 加深脉冲：f58 → f61 谷值 → f64 回正（谷值 brightness 0.78，spec 4f 放宽到 6f 保可感）
const PULSE_IN = 58;
const PULSE_MID = 61;
const PULSE_OUT = 64;

const moveEase = Easing.inOut(Easing.cubic);

const FlipCard: React.FC<{ i: number; frame: number }> = ({ i, frame }) => {
  const t0 = BEAT + i * STAGGER;
  const [x0, y0] = ROW_CENTERS[i];
  const [x1, y1] = GRID_CENTERS[i];

  const x = interpolate(frame, [t0, t0 + MOVE], [x0, x1], {
    easing: moveEase, extrapolateLeft: 'clamp', extrapolateRight: 'clamp',
  });
  const y = interpolate(frame, [t0, t0 + MOVE], [y0, y1], {
    easing: moveEase, extrapolateLeft: 'clamp', extrapolateRight: 'clamp',
  });

  // scale：16f 冲到 1.28*1.02，随后 3f 回落到 1.28
  const sUp = interpolate(frame, [t0, t0 + MOVE], [1, SCALE_END * OVERSHOOT], {
    easing: moveEase, extrapolateLeft: 'clamp', extrapolateRight: 'clamp',
  });
  const sBack = interpolate(frame, [t0 + MOVE, t0 + MOVE + SETTLE], [SCALE_END * OVERSHOOT, SCALE_END], {
    easing: Easing.out(Easing.cubic), extrapolateLeft: 'clamp', extrapolateRight: 'clamp',
  });
  const s = frame < t0 + MOVE ? sUp : sBack;

  return (
    <div
      style={{
        position: 'absolute',
        left: x - CARD_W / 2,
        top: y - CARD_H / 2,
        width: CARD_W,
        height: CARD_H,
        transform: `scale(${s})`,
        transformOrigin: '50% 50%',
        zIndex: i,
      }}
    >
      <Card w={CARD_W} h={CARD_H} seed={i + 1} />
    </div>
  );
};

export const FlipGridReflow: React.FC = () => {
  const frame = useCurrentFrame();

  // 加深脉冲：仅脉冲窗口内挂载 filter，窗口外完全不挂（摘罩）
  const pulsing = frame >= PULSE_IN && frame <= PULSE_OUT;
  const bright = pulsing
    ? interpolate(frame, [PULSE_IN, PULSE_MID, PULSE_OUT], [1, 0.78, 1], {
        extrapolateLeft: 'clamp', extrapolateRight: 'clamp',
      })
    : 1;

  return (
    <div
      style={{
        width: 1920,
        height: 1080,
        background: G.bg,
        position: 'relative',
        overflow: 'hidden',
        ...(pulsing ? { filter: `brightness(${bright})` } : {}),
      }}
    >
      <div style={{ position: 'absolute', left: 70, top: 56 }}>
        <TitleBlock text="FLIP GRID REFLOW" size={44} />
      </div>
      {Array.from({ length: N }).map((_, i) => (
        <FlipCard key={i} i={i} frame={frame} />
      ))}
    </div>
  );
};


// ===== demos/rhythm/panel-grid-moves/GridFlashMosaic.tsx =====
// grid-flash-mosaic —— 九宫格闪切
// 浅底 → f25 起 3×3 网格按十六分音符(每 2f)逐格啪啪硬入(顺序 h(i) 打乱)，
// 每格 = FakeDashboard 不同区域裁切片或灰卡；入格 3f scale 1.18→1 + 2f 加深脉冲。
// 填满后停 14f(整墙微呼吸 1.008) → 中心格 14f Easing.in(cubic) 放大吞掉全屏
// 成为满屏页面。收尾真静止 ≥40f。
import React from 'react';
import { useCurrentFrame, interpolate, Easing } from 'remotion';
import { G, Card, FakeDashboard } from '../../_fixtures/Fixtures';

const h = (n: number) => {
  const s = Math.sin(n * 127.3) * 43758.5453;
  return s - Math.floor(s);
};

const CELL_W = 600;
const CELL_H = 340;
const GAP = 12;
const GRID_X = (1920 - (CELL_W * 3 + GAP * 2)) / 2; // 48
const GRID_Y = (1080 - (CELL_H * 3 + GAP * 2)) / 2; // 18

const FILL_START = 25; // 第一格落下
const STEP = 2; // 十六分音符：每 2f 一格
// 打乱顺序：索引按 h(i+1) 排序
const ORDER = Array.from({ length: 9 }, (_, i) => i).sort(
  (a, b) => h(a + 1) - h(b + 1)
);
const RANK: number[] = [];
ORDER.forEach((cell, k) => (RANK[cell] = k));

const LAST_IN = FILL_START + 8 * STEP + 3; // 最后一格入格动画结束 f44
const HOLD_END = LAST_IN + 14; // 整墙呼吸段结束 f58
const ZOOM_DUR = 14;
const ZOOM_END = HOLD_END + ZOOM_DUR; // f72，之后真静止

// 中心格内是整页 FakeDashboard 缩小版(0.3125)，放大后正好成为满屏页面
const MINI_SCALE = CELL_W / 1920; // 0.3125
// 3.2 恰好铺满；加到 3.28 让格子的深色描边完全滑出画外，收尾满屏页面干净
const ZOOM_SCALE = 3.28;

// 非中心格：FakeDashboard 裁切偏移 (x, y, variant) 或灰卡(null)
const CROPS: Array<{ x: number; y: number; v: 'A' | 'B' } | null> = [
  { x: -120, y: -60, v: 'A' },
  null, // 灰卡
  { x: -1260, y: -120, v: 'B' },
  { x: -60, y: -520, v: 'B' },
  null, // 中心格(单独处理，占位)
  { x: -1300, y: -640, v: 'A' },
  { x: -420, y: -300, v: 'B' },
  null, // 灰卡
  { x: -900, y: -680, v: 'A' },
];

const CellContent: React.FC<{ i: number }> = ({ i }) => {
  if (i === 4) {
    // 中心格：整页 dashboard 缩到格内
    return (
      <div
        style={{
          position: 'absolute',
          left: 0,
          top: (CELL_H - 1080 * MINI_SCALE) / 2,
          transform: `scale(${MINI_SCALE})`,
          transformOrigin: 'top left',
        }}
      >
        <FakeDashboard variant="A" />
      </div>
    );
  }
  const crop = CROPS[i];
  if (crop === null) {
    // 灰卡格
    return (
      <div
        style={{
          width: '100%',
          height: '100%',
          background: G.panel,
          display: 'flex',
          alignItems: 'center',
          justifyContent: 'center',
        }}
      >
        <Card w={430} h={240} seed={i * 3 + 2} />
      </div>
    );
  }
  // 裁切片：整页 dashboard 以不同偏移塞进格子(相当于 backgroundPosition 各异)
  return (
    <div style={{ position: 'absolute', left: crop.x, top: crop.y }}>
      <FakeDashboard variant={crop.v} />
    </div>
  );
};

export const GridFlashMosaic: React.FC = () => {
  const f = useCurrentFrame();

  // 整墙微呼吸：仅在填满后的 14f 停顿段，一个正弦来回 1→1.008→1
  const breath =
    f >= LAST_IN && f < HOLD_END
      ? 1 + 0.008 * Math.sin((Math.PI * (f - LAST_IN)) / 14)
      : 1;

  // 中心格放大：14f Easing.in(cubic)，吞掉全屏
  const zoom = interpolate(f, [HOLD_END, ZOOM_END], [1, ZOOM_SCALE], {
    easing: Easing.in(Easing.cubic),
    extrapolateLeft: 'clamp',
    extrapolateRight: 'clamp',
  });

  return (
    <div
      style={{
        width: 1920,
        height: 1080,
        background: G.bg,
        position: 'relative',
        overflow: 'hidden',
      }}
    >
      <div
        style={{
          position: 'absolute',
          inset: 0,
          transform: `scale(${breath})`,
          transformOrigin: '960px 540px',
        }}
      >
        {Array.from({ length: 9 }).map((_, i) => {
          const start = FILL_START + RANK[i] * STEP;
          if (f < start) return null; // 硬入：未到拍点不渲染，无淡化
          const row = Math.floor(i / 3);
          const col = i % 3;
          // 入格 3f scale 1.18→1
          const popScale = interpolate(f, [start, start + 3], [1.18, 1], {
            extrapolateLeft: 'clamp',
            extrapolateRight: 'clamp',
          });
          // 2f 加深脉冲
          const darken = interpolate(f, [start, start + 2], [0.45, 0], {
            extrapolateLeft: 'clamp',
            extrapolateRight: 'clamp',
          });
          const isCenter = i === 4;
          const cellScale = isCenter ? popScale * zoom : popScale;
          return (
            <div
              key={i}
              style={{
                position: 'absolute',
                left: GRID_X + col * (CELL_W + GAP),
                top: GRID_Y + row * (CELL_H + GAP),
                width: CELL_W,
                height: CELL_H,
                overflow: 'hidden',
                background: G.card,
                border: `3px solid ${G.ink}`,
                boxSizing: 'border-box',
                transform: `scale(${cellScale})`,
                transformOrigin: 'center',
                zIndex: isCenter ? 10 : 1,
              }}
            >
              <CellContent i={i} />
              {darken > 0.001 && (
                <div
                  style={{
                    position: 'absolute',
                    inset: 0,
                    background: '#000',
                    opacity: darken,
                  }}
                />
              )}
            </div>
          );
        })}
      </div>
    </div>
  );
};