Biến hình từ khối nguyên thủy

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/morph-from-primitive.json

git clone https://github.com/Vincentwei1021/video-shotcraft
# component: demos/ui-entrance/morph-from-primitive/MorphFromPrimitive.tsx
npx remotion render <CompositionId> out.mp4

claude mcp add --transport http gimgs https://gimgs.net/mcp
# then: search_motion_templates / get_motion_template("morph-from-primitive")

Use the video-shotcraft shot recipe "Biến hình từ khối nguyên thủy" (Remotion composition, Apache-2.0) published on gimgs.net.
Recipe JSON (prompt = timing/easing/parameter table/pitfalls, files = TSX source): https://gimgs.net/motion/morph-from-primitive.json
Raw TSX: https://gimgs.net/motion/morph-from-primitive/template.html
Repository: https://github.com/Vincentwei1021/video-shotcraft  (component: demos/ui-entrance/morph-from-primitive/MorphFromPrimitive.tsx; imports demos/_fixtures and assets/lib)
Spec: 1920x1080, 30 fps, 4.72s

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/ui-entrance/morph-from-primitive/MorphFromPrimitive.tsx =====
// morph-from-primitive｜原型变形
// 正圆呼吸一拍(anticipation) → path d 逐数值插值变形成 520×300 圆角矩形卡片轮廓
// → 卡片内部灰阶内容条淡入。全部帧驱动、确定性。
import React from 'react';
import { useCurrentFrame, interpolate, Easing } from 'remotion';
import { G } from '../../_fixtures/Fixtures';

const CX = 960;
const CY = 540;
const R = 130;
const RECT_W = 520;
const RECT_H = 300;
const RECT_R = 20;

// ---- 同构 path：M + 8 段 cubic（4 直边段 + 4 圆角段），圆与圆角矩形共用锚点拓扑 ----
// 圆角矩形锚点（中心坐标系，顺时针，从右边上端点起）：
// A0(hw,-ihh) 右边上 → A1(hw,ihh) 右边下 → A2(iw,hh) 底边右 → A3(-iw,hh) 底边左
// → A4(-hw,ihh) 左边下 → A5(-hw,-ihh) 左边上 → A6(-iw,-hh) 顶边左 → A7(iw,-hh) 顶边右 → A0
const hw = RECT_W / 2; // 260
const hh = RECT_H / 2; // 150
const iw = hw - RECT_R; // 240
const ihh = hh - RECT_R; // 130
const KAPPA = 0.5522847498;

type Seg = [number, number, number, number, number, number]; // c1x c1y c2x c2y x y
type Shape = { start: [number, number]; segs: Seg[] };

const line = (from: [number, number], to: [number, number]): Seg => [
  from[0] + (to[0] - from[0]) / 3,
  from[1] + (to[1] - from[1]) / 3,
  from[0] + ((to[0] - from[0]) * 2) / 3,
  from[1] + ((to[1] - from[1]) * 2) / 3,
  to[0],
  to[1],
];
// 90° 圆角弧 from → to（弧心 c）：c1 = from + k·(to−c)，c2 = to + k·(from−c)
const corner = (
  from: [number, number],
  to: [number, number],
  c: [number, number]
): Seg => [
  from[0] + KAPPA * (to[0] - c[0]),
  from[1] + KAPPA * (to[1] - c[1]),
  to[0] + KAPPA * (from[0] - c[0]),
  to[1] + KAPPA * (from[1] - c[1]),
  to[0],
  to[1],
];

const rectAnchors: [number, number][] = [
  [hw, -ihh],
  [hw, ihh],
  [iw, hh],
  [-iw, hh],
  [-hw, ihh],
  [-hw, -ihh],
  [-iw, -hh],
  [iw, -hh],
];
const cornerCenters: [number, number][] = [
  [iw, ihh], // A1→A2 右下
  [-iw, ihh], // A3→A4 左下
  [-iw, -ihh], // A5→A6 左上
  [iw, -ihh], // A7→A0 右上
];

const rectShape: Shape = {
  start: rectAnchors[0],
  segs: [
    line(rectAnchors[0], rectAnchors[1]),
    corner(rectAnchors[1], rectAnchors[2], cornerCenters[0]),
    line(rectAnchors[2], rectAnchors[3]),
    corner(rectAnchors[3], rectAnchors[4], cornerCenters[1]),
    line(rectAnchors[4], rectAnchors[5]),
    corner(rectAnchors[5], rectAnchors[6], cornerCenters[2]),
    line(rectAnchors[6], rectAnchors[7]),
    corner(rectAnchors[7], rectAnchors[0], cornerCenters[3]),
  ],
};

// 圆：锚点取矩形锚点的同方位角，段间用精确弧公式 k = 4/3·tan(Δθ/4)
const angles = rectAnchors.map(([x, y]) => Math.atan2(y, x));
const circAnchors: [number, number][] = angles.map((a) => [
  R * Math.cos(a),
  R * Math.sin(a),
]);
const arcSeg = (i: number): Seg => {
  const a1 = angles[i];
  let a2 = angles[(i + 1) % 8];
  if (a2 <= a1) a2 += Math.PI * 2;
  const k = (4 / 3) * Math.tan((a2 - a1) / 4);
  const p1 = circAnchors[i];
  const p2 = circAnchors[(i + 1) % 8];
  return [
    p1[0] - k * R * Math.sin(a1),
    p1[1] + k * R * Math.cos(a1),
    p2[0] + k * R * Math.sin(a2 % (Math.PI * 2)),
    p2[1] - k * R * Math.cos(a2 % (Math.PI * 2)),
    p2[0],
    p2[1],
  ];
};
const circShape: Shape = {
  start: circAnchors[0],
  segs: [0, 1, 2, 3, 4, 5, 6, 7].map(arcSeg),
};

const lerp = (a: number, b: number, t: number) => a + (b - a) * t;
const f2 = (n: number) => n.toFixed(2);

const morphPath = (t: number): string => {
  const sx = lerp(circShape.start[0], rectShape.start[0], t);
  const sy = lerp(circShape.start[1], rectShape.start[1], t);
  let d = `M ${f2(CX + sx)} ${f2(CY + sy)}`;
  for (let i = 0; i < 8; i++) {
    const a = circShape.segs[i];
    const b = rectShape.segs[i];
    const v = a.map((n, j) => lerp(n, b[j], t));
    d += ` C ${f2(CX + v[0])} ${f2(CY + v[1])} ${f2(CX + v[2])} ${f2(
      CY + v[3]
    )} ${f2(CX + v[4])} ${f2(CY + v[5])}`;
  }
  return d + ' Z';
};

// ---- 时间轴（30fps，总 140f）----
// 0–10 静置圆 | 10–30 呼吸一拍 scale 1→1.06→1 | 30–54 变形 24f
// | 56–68 内容条淡入 12f | 68–140 真静止 72f
export const MorphFromPrimitive: React.FC = () => {
  const frame = useCurrentFrame();

  const breath = interpolate(frame, [10, 20, 30], [1, 1.12, 1], {
    easing: Easing.inOut(Easing.cubic),
    extrapolateLeft: 'clamp',
    extrapolateRight: 'clamp',
  });

  const t = interpolate(frame, [30, 54], [0, 1], {
    easing: Easing.inOut(Easing.cubic),
    extrapolateLeft: 'clamp',
    extrapolateRight: 'clamp',
  });

  const contentOpacity = interpolate(frame, [56, 68], [0, 1], {
    easing: Easing.out(Easing.cubic),
    extrapolateLeft: 'clamp',
    extrapolateRight: 'clamp',
  });

  const d = morphPath(t);

  return (
    <div style={{ width: 1920, height: 1080, background: G.bg, position: 'relative' }}>
      <svg
        width={1920}
        height={1080}
        viewBox="0 0 1920 1080"
        style={{ position: 'absolute', inset: 0 }}
      >
        <g transform={`translate(${CX} ${CY}) scale(${breath}) translate(${-CX} ${-CY})`}>
          <path d={d} fill="none" stroke={G.ink} strokeWidth={3} />
        </g>
      </svg>
      {/* 卡片内容条（参考 line-boil 描边卡内容），变形完成后淡入 */}
      <div
        style={{
          position: 'absolute',
          left: CX - RECT_W / 2,
          top: CY - RECT_H / 2,
          width: RECT_W,
          height: RECT_H,
          boxSizing: 'border-box',
          padding: 36,
          display: 'flex',
          flexDirection: 'column',
          gap: 18,
          opacity: contentOpacity,
        }}
      >
        <div style={{ height: 26, width: '58%', background: G.bar, borderRadius: 13 }} />
        <div style={{ height: 16, width: '86%', background: G.line, borderRadius: 8 }} />
        <div style={{ height: 16, width: '72%', background: G.line, borderRadius: 8 }} />
        <div style={{ marginTop: 'auto', display: 'flex', gap: 14, alignItems: 'center' }}>
          <div style={{ width: 40, height: 40, borderRadius: 20, background: G.mid }} />
          <div style={{ height: 16, width: 120, background: G.line, borderRadius: 8 }} />
        </div>
      </div>
    </div>
  );
};

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/ui-entrance/morph-from-primitive/MorphFromPrimitive.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.