Khung quét quét đọc tài liệu

Mọi thứ trên trang này đều có bản máy đọc. Đưa agent link JSON, hoặc thêm MCP server gimgs rồi bảo nó tìm motion template.

1. Tải JSON — trong đó có công thức cảnh quay (timing, easing, bảng tham số, lỗi hay gặp) và toàn bộ source TSX.
2. Clone repo video-shotcraft; component import fixture chung từ demos/_fixtures và helper từ assets/lib.
3. Đăng ký component thành <Composition> trong project Remotion rồi render bằng `npx remotion render`, hoặc dựng lại công thức bằng engine của bạn.

curl -s https://gimgs.net/motion/scan-bracket-sweep.json

git clone https://github.com/Vincentwei1021/video-shotcraft
# component: demos/effects/scan-bracket-sweep/ScanBracketSweep.tsx
npx remotion render <CompositionId> out.mp4

claude mcp add --transport http gimgs https://gimgs.net/mcp
# then: search_motion_templates / get_motion_template("scan-bracket-sweep")

Use the video-shotcraft shot recipe "Khung quét quét đọc tài liệu" (Remotion composition, Apache-2.0) published on gimgs.net.
Recipe JSON (prompt = timing/easing/parameter table/pitfalls, files = TSX source): https://gimgs.net/motion/scan-bracket-sweep.json
Raw TSX: https://gimgs.net/motion/scan-bracket-sweep/template.html
Repository: https://github.com/Vincentwei1021/video-shotcraft  (component: demos/effects/scan-bracket-sweep/ScanBracketSweep.tsx; imports demos/_fixtures and assets/lib)
Spec: 1920x1080, 30 fps, 5.5s

1. Read the JSON and follow its "prompt" section (when to use, intention, parameter table, known pitfalls).
2. Adapt it for: <describe what you want>.
3. Either clone the repo, register the component as a <Composition> in a Remotion project and run npx remotion render <CompositionId> out.mp4 — or re-implement the recipe in your own engine (HTML/WAAPI works: keep the same timing and easing).

JSON · Markdown · llms.txt

// ===== demos/effects/scan-bracket-sweep/ScanBracketSweep.tsx =====
// scan-bracket-sweep — Scan Bracket 取景括号扫描光带（motion-lab 定稿转原生 Remotion）
// 骨架文档弹到画面中央，四角落下黑色 L 形取景括号（向内位移 8px），随后一条 2.5px
// 黑实线带着 80px 深灰→透明拖尾在文档上往复扫 5 趟，两端慢中间快，尾迹方向始终朝
// 运动来向，文档本身完全静止。设计坐标 480×270（DesignStage 等比放大）。
import React from 'react';
import { DesignStage, E, lerp, rand, seg, useT } from '../../_fixtures/Motion';

export const SCAN_BRACKET_SWEEP_DURATION = 150; // 5000ms @30fps

// —— b09 批共用量（源自 motion-lab/fx/b09.js，按规则内联，不 export）——
const BG = '#F1F1F3'; // 页面浅灰
const INK = '#0B0B0C'; // 纯黑
const LINE = '#E6E6EA'; // 描边
const SKEL = '#DEDEE3'; // 骨架灰

const clamp01 = (v: number) => (v < 0 ? 0 : v > 1 ? 1 : v);
const inOutSin = (x: number) => 0.5 - Math.cos(Math.PI * clamp01(x)) / 2;

// 文档几何：440×240 定尺画布内居中的 300×178 骨架文档
const DW = 300;
const DH = 178;
const DX = (440 - DW) / 2;
const DY = (240 - DH) / 2;

// 骨架列参数（与 effect.js mkDoc 完全一致：4 列 ×7 行，rand 种子相同可逐条复现）
const COLS = 4;
const COL_W = (DW - 28 - (COLS - 1) * 10) / COLS;
const SKEL_COLS = Array.from({ length: COLS }, (_, c) => ({
  x: 14 + c * (COL_W + 10),
  rows: Array.from({ length: 7 }, (_, r) => ({
    top: 58 + r * 13,
    w: Number((COL_W * (0.55 + rand(c * 13 + r * 7) * 0.45)).toFixed(1)),
  })),
}));

// 四角取景括号：L 形两边 2px 黑边，落位时从外侧 8px 位移收进来
const CS = 34;
const CB = `2px solid ${INK}`;
const CORNERS: { pos: React.CSSProperties; dx: number; dy: number }[] = [
  { pos: { left: -7, top: -7, borderLeft: CB, borderTop: CB }, dx: 1, dy: 1 },
  { pos: { right: -7, top: -7, borderRight: CB, borderTop: CB }, dx: -1, dy: 1 },
  { pos: { right: -7, bottom: -7, borderRight: CB, borderBottom: CB }, dx: -1, dy: -1 },
  { pos: { left: -7, bottom: -7, borderLeft: CB, borderBottom: CB }, dx: 1, dy: -1 },
];

const PASSES = 5;

export const ScanBracketSweep: React.FC = () => {
  const t = useT();

  // 文档弹入：scale 0.86→1 + 快速淡入
  const dp = seg(t, 0, 0.11, E.outCubic);

  // 扫描往复：5 趟，每趟末尾留 12% 停顿，两端慢中间快（inOutSine）
  const sp = seg(t, 0.17, 0.95, E.linear);
  const raw = sp * PASSES;
  const pi = Math.min(PASSES - 1, Math.floor(raw));
  const local = clamp01((raw - pi) / 0.88);
  const dir = pi % 2 === 0 ? 1 : -1;
  const prog = inOutSin(local);
  const y = dir > 0 ? prog * DH : DH - prog * DH;
  // 光带整体淡入（0.16–0.2）淡出（0.93–0.99）
  const clipOp = Number((seg(t, 0.16, 0.2) * (1 - seg(t, 0.93, 0.99))).toFixed(3));

  return (
    <DesignStage bg={BG}>
      {/* 440×240 定尺画布（mkSheet），居中于 480×270 设计坐标 */}
      <div
        style={{
          position: 'absolute',
          left: '50%',
          top: '50%',
          width: 440,
          height: 240,
          margin: '-120px 0 0 -220px',
        }}
      >
        {/* holder：文档 + 光带 + 括号共用的定位容器 */}
        <div style={{ position: 'absolute', left: DX, top: DY, width: DW, height: DH }}>
          {/* 骨架文档卡片（原采集页为 content-box：1px 边框长在 300×178 之外） */}
          <div
            style={{
              position: 'absolute',
              left: 0,
              top: 0,
              width: DW,
              height: DH,
              boxSizing: 'content-box',
              background: '#fff',
              border: `1px solid ${LINE}`,
              borderRadius: 10,
              boxShadow: '0 8px 26px rgba(0,0,0,.06)',
              overflow: 'hidden',
              transformOrigin: '50% 50%',
              transform: `scale(${lerp(dp, 0.86, 1)})`,
              opacity: clamp01(dp * 3),
            }}
          >
            <div style={{ position: 'absolute', left: 0, top: 0, right: 0 }}>
              {/* 标题条 + 副标题条 */}
              <div
                style={{
                  position: 'absolute',
                  left: 14,
                  top: 12,
                  width: Math.round(DW * 0.34),
                  height: 7,
                  borderRadius: 3,
                  background: INK,
                  opacity: 0.85,
                }}
              />
              <div
                style={{
                  position: 'absolute',
                  left: 14,
                  top: 25,
                  width: Math.round(DW * 0.2),
                  height: 5,
                  borderRadius: 3,
                  background: SKEL,
                }}
              />
              {/* 4 列骨架：列头 + 7 行随机宽占位条 */}
              {SKEL_COLS.map((col, c) => (
                <React.Fragment key={c}>
                  <div
                    style={{
                      position: 'absolute',
                      left: col.x,
                      top: 44,
                      width: Number((COL_W * 0.72).toFixed(1)),
                      height: 6,
                      borderRadius: 3,
                      background: '#9A9AA2',
                    }}
                  />
                  {col.rows.map((row, r) => (
                    <div
                      key={r}
                      style={{
                        position: 'absolute',
                        left: col.x,
                        top: row.top,
                        width: row.w,
                        height: 5,
                        borderRadius: 2.5,
                        background: SKEL,
                      }}
                    />
                  ))}
                </React.Fragment>
              ))}
            </div>
          </div>

          {/* 扫描光带（裁在文档圆角内）：2.5px 黑实线 + 82px 朝来向的渐变拖尾 */}
          <div
            style={{
              position: 'absolute',
              left: 0,
              top: 0,
              width: DW,
              height: DH,
              borderRadius: 10,
              overflow: 'hidden',
              pointerEvents: 'none',
              opacity: clipOp,
            }}
          >
            <div
              style={{
                position: 'absolute',
                left: 0,
                right: 0,
                top: 0,
                height: 0,
                transform: `translateY(${y.toFixed(2)}px)`,
              }}
            >
              <div
                style={{
                  position: 'absolute',
                  left: 0,
                  right: 0,
                  height: 82,
                  top: dir > 0 ? -82 : 2.5,
                  background:
                    dir > 0
                      ? 'linear-gradient(180deg,rgba(20,20,22,0),rgba(20,20,22,.5))'
                      : 'linear-gradient(180deg,rgba(20,20,22,.5),rgba(20,20,22,0))',
                }}
              />
              <div
                style={{
                  position: 'absolute',
                  left: 0,
                  right: 0,
                  top: 0,
                  height: 2.5,
                  background: INK,
                }}
              />
            </div>
          </div>

          {/* 四角取景括号：交错落位，向内收 8px（原页 content-box，2px 边长在 34×34 之外） */}
          {CORNERS.map((c, i) => {
            const p = seg(t, 0.08 + i * 0.022, 0.08 + i * 0.022 + 0.055, E.outCubic);
            return (
              <div
                key={i}
                style={{
                  position: 'absolute',
                  width: CS,
                  height: CS,
                  boxSizing: 'content-box',
                  opacity: p,
                  transform: `translate(${(1 - p) * 8 * c.dx}px,${(1 - p) * 8 * c.dy}px)`,
                  ...c.pos,
                }}
              />
            );
          })}
        </div>
      </div>
    </DesignStage>
  );
};

1. Read the recipe
   Prompt = when to use, intention, parameter table with typical values and how each one feels, known pitfalls. Treat values as calibrated starting points.
2. Get the code
   tool: git
   git clone https://github.com/Vincentwei1021/video-shotcraft && cd video-shotcraft && npm install
3. Register + render
   tool: remotion
   npx remotion render <CompositionId> out.mp4 # component: demos/effects/scan-bracket-sweep/ScanBracketSweep.tsx
4. Or re-implement
   Port the timing/easing from the recipe to HTML + WAAPI (gimgs motion contract) or any engine; keep the same segment windows and easing.