title: 一个钩子的诞生
aspect: 横屏
fps: 60
lang: zh-CN

# 演示项目：把全部组件串成一条完整时间线
# 改任何一处都只影响对应场景，用 `hv 看帧 demo全组件` 快速验证

scenes:
  # ---------- 开场 ----------
  - component: intro
    duration: 3.5
    props:
      kicker: 建模演示
      title: 一个钩子的诞生
      subtitle: 草图 · 拉伸 · 切除 · 圆角

  # ---------- 第一部分：写代码 ----------
  - component: codedemo
    duration: 8
    props:
      filename: hook.py
      language: python
      dimOthers: "true"
      highlight: "3,4"
      code: |
        def make_hook(thickness=0.4):
            """生成一个钩子的截面轮廓"""
            profile = bezier_profile()
            solid = extrude(profile, depth=0.6)
            throat = subtract(solid, sphere(r=0.92))
            return fillet(throat, r=0.11)

  - component: terminal
    duration: 6
    props:
      title: python
      prompt: ">>> "
      script: |
        [
          { "text": "from cad import make_hook", "kind": "cmd" },
          { "text": "hook = make_hook(thickness=0.4)", "kind": "cmd" },
          { "text": "四个布尔操作全部成功", "kind": "ok" },
          { "text": "耗时 0.42s", "kind": "dim" }
        ]

  - component: lowerthird
    duration: 3
    props:
      text: 关键：轮廓必须一次性闭合
      sub: 自交的草图会让拉伸直接失败

  # ---------- 第二部分：三维建模 ----------
  - component: cad3d
    duration: 16
    props:
      spin: "true"
      accent: "#d97757"

  # ---------- 收尾 ----------
  - component: textblock
    duration: 4
    props:
      heading: 四个操作，[[一气呵成]]
      body: 草图定形状，拉伸给厚度，切除挖钩槽，圆角去毛刺。

  - component: outro
    duration: 4
    props:
      cta: 觉得有用就点个关注
      handle: "@你的频道"
      foot: 每周三更新一期