Chuyển cảnh nét vẽ dẫn đường

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/line-carry-transition.json

git clone https://github.com/Vincentwei1021/video-shotcraft
# component: demos/transition/line-carry-transition/LineCarryTransition.tsx
npx remotion render <CompositionId> out.mp4

claude mcp add --transport http gimgs https://gimgs.net/mcp
# then: search_motion_templates / get_motion_template("line-carry-transition")

Use the video-shotcraft shot recipe "Chuyển cảnh nét vẽ dẫn đường" (Remotion composition, Apache-2.0) published on gimgs.net.
Recipe JSON (prompt = timing/easing/parameter table/pitfalls, files = TSX source): https://gimgs.net/motion/line-carry-transition.json
Raw TSX: https://gimgs.net/motion/line-carry-transition/template.html
Repository: https://github.com/Vincentwei1021/video-shotcraft  (component: demos/transition/line-carry-transition/LineCarryTransition.tsx; imports demos/_fixtures and assets/lib)
Spec: 1920x1080, 30 fps, 5.38s

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/transition/line-carry-transition/LineCarryTransition.tsx =====
// line-carry-transition｜线条接力横移转场（Catch Me If You Can 图形接力）
// 世界宽 3840（A 左半 / B 右半）。0–24f 卡 A 底部 6px ink 进度条走满；
// 24–34f 进度条末端延伸成横线冲出卡右缘；34–94f 镜头整体左移 1920px
// （Easing.inOut(cubic)，60f），线与镜头同速延伸，笔头始终在画面偏右；
// 94–112f 线拐直角围出 560×330 卡框（一条 path 全程 evolve，dashoffset 生长）；
// 112–124f 框闭合后 B 卡内容淡入 12f。124–160f 真静止 36f ≥ 35f。
// 帧确定，无随机；笔头墨点 118f 起条件卸载（摘罩判例）。
import React from 'react';
import { AbsoluteFill, useCurrentFrame, interpolate, Easing } from 'remotion';
import { G, Card, TitleBlock } from '../../_fixtures/Fixtures';

// ---- 世界几何（一条折线：进度条 + 横线 + 直角 + 矩形框）----
// M 400,705 → 2600,705（进度 560 + 冲出 1640）→ 上 2600,375 → 右 3160,375
// → 下 3160,705 → 左回 2600,705 闭合。总长 2200+330+560+330+560 = 3980。
const PATH = 'M 400 705 L 2600 705 L 2600 375 L 3160 375 L 3160 705 L 2600 705';
const SEGS: Array<[number, number, number, number, number]> = [
  [400, 705, 2600, 705, 2200],
  [2600, 705, 2600, 375, 330],
  [2600, 375, 3160, 375, 560],
  [3160, 375, 3160, 705, 330],
  [3160, 705, 2600, 705, 560],
];
const TOTAL = 3980;

// 笔头坐标：按已画长度沿折线取点
const tipAt = (drawn: number): [number, number] => {
  let d = Math.max(0, Math.min(drawn, TOTAL));
  for (const [x1, y1, x2, y2, len] of SEGS) {
    if (d <= len) {
      const t = d / len;
      return [x1 + (x2 - x1) * t, y1 + (y2 - y1) * t];
    }
    d -= len;
  }
  return [2600, 705];
};

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

  // 镜头：34–94f 左移 1920px，inOut cubic
  const cam = interpolate(frame, [34, 94], [0, 1920], {
    easing: Easing.inOut(Easing.cubic),
    extrapolateLeft: 'clamp',
    extrapolateRight: 'clamp',
  });

  // 已画长度：三段接力（进度条 → 冲出 → 与镜头同速 → 收框）
  let drawn: number;
  if (frame < 24) {
    drawn = interpolate(frame, [0, 24], [0, 560], {
      easing: Easing.out(Easing.cubic),
      extrapolateLeft: 'clamp',
      extrapolateRight: 'clamp',
    });
  } else if (frame < 34) {
    drawn = interpolate(frame, [24, 34], [560, 1100], {
      extrapolateRight: 'clamp',
    });
  } else if (frame < 94) {
    drawn = 1100 + cam; // 与镜头同速延伸，笔头稳在画面偏右
  } else {
    drawn = interpolate(frame, [94, 112], [3020, TOTAL], {
      easing: Easing.out(Easing.cubic),
      extrapolateLeft: 'clamp',
      extrapolateRight: 'clamp',
    });
  }

  // B 卡内容：框闭合(112f)后淡入 12f
  const contentOpacity = interpolate(frame, [112, 124], [0, 1], {
    extrapolateLeft: 'clamp',
    extrapolateRight: 'clamp',
  });

  // 笔头墨点：全程随笔走，112–118f 线性消散，118f 起条件卸载
  const tipMounted = frame < 118;
  const tipOpacity = interpolate(frame, [112, 118], [1, 0], {
    extrapolateLeft: 'clamp',
    extrapolateRight: 'clamp',
  });
  const [tx, ty] = tipAt(drawn);

  return (
    <AbsoluteFill style={{ background: G.bg, overflow: 'hidden' }}>
      {/* 世界容器：3840 宽，整体横移 = 镜头跟线走 */}
      <div
        style={{
          position: 'absolute',
          width: 3840,
          height: 1080,
          transform: `translateX(${-cam}px)`,
        }}
      >
        {/* B 半世界底色略浅，卖出"新世界" */}
        <div style={{ position: 'absolute', left: 1920, top: 0, width: 1920, height: 1080, background: G.panel }} />

        {/* 场景 A：标题 + 卡 + 进度条轨道（ink 填充即 path 本体） */}
        <div style={{ position: 'absolute', left: 400, top: 250 }}>
          <TitleBlock text="Scene A" size={56} />
        </div>
        <Card w={560} h={330} seed={2} style={{ position: 'absolute', left: 400, top: 350 }} />
        <div style={{ position: 'absolute', left: 400, top: 702, width: 560, height: 6, borderRadius: 3, background: G.line }} />

        {/* 一条线全程 evolve：dasharray/dashoffset 生长 */}
        <svg width={3840} height={1080} style={{ position: 'absolute', inset: 0, pointerEvents: 'none' }}>
          <path
            d={PATH}
            fill="none"
            stroke={G.ink}
            strokeWidth={6}
            strokeLinecap="round"
            strokeLinejoin="round"
            strokeDasharray={TOTAL}
            strokeDashoffset={TOTAL - drawn}
          />
          {tipMounted && <circle cx={tx} cy={ty} r={11} fill={G.ink} opacity={tipOpacity} />}
        </svg>

        {/* 场景 B：框(2600,375–3160,705)由线画成，内容淡入 */}
        <div
          style={{
            position: 'absolute',
            left: 2600,
            top: 375,
            width: 560,
            height: 330,
            boxSizing: 'border-box',
            padding: 26,
            display: 'flex',
            flexDirection: 'column',
            gap: 14,
            opacity: contentOpacity,
          }}
        >
          <div style={{ height: 18, width: '58%', background: G.bar, borderRadius: 9 }} />
          <div style={{ height: 11, width: '86%', background: G.line, borderRadius: 5 }} />
          <div style={{ height: 11, width: '72%', background: G.line, borderRadius: 5 }} />
          <div style={{ height: 11, width: '64%', background: G.line, borderRadius: 5 }} />
          <div style={{ marginTop: 'auto', display: 'flex', gap: 10, alignItems: 'center' }}>
            <div style={{ width: 30, height: 30, borderRadius: 15, background: G.mid }} />
            <div style={{ height: 11, width: 90, background: G.line, borderRadius: 5 }} />
          </div>
        </div>
        <div style={{ position: 'absolute', left: 2600, top: 275, opacity: contentOpacity }}>
          <TitleBlock text="Scene B" size={56} />
        </div>
      </div>
    </AbsoluteFill>
  );
};

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/transition/line-carry-transition/LineCarryTransition.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.