Git Internals — DAG of Commits

Description

Visualizes Git's underlying commit DAG structure. Commit objects are shown as circles with abbreviated hash IDs, branches as colored labels pointing to commits, and HEAD as a special pointer. Operations animated include: git commit (new node), git branch (new label), git merge (merge commit with two parents), and git rebase (commits replayed on new base).

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Phases

#	Phase Name	Duration	Description
1	Intro	3s	Title and initial commits displayed
2	Git Commit	6s	New commit node added; HEAD and branch pointer move
3	Git Branch	5s	New feature branch label appears; points to same commit as main
4	Branch Divergence	6s	Commits added on main and feature independently
5	Git Merge	8s	Merge commit created with two parent arrows; main moves forward
6	Git Rebase	10s	Show original feature branch; replay commits on top of main
7	Outro	5s	Final DAG displayed with all pointers labeled

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Layout

+--------------------------------------------------+
|  Title: Git Internals — DAG of Commits           |
+--------------------------------------------------+
|                                                  |
|  main:    C1 ← C2 ← C3 ← M  (merge commit)      |
|                    \       /                     |
|  feature:           F1 ← F2                      |
|                                                  |
|  HEAD → main → M                                 |
|                                                  |
|  Rebase panel (bottom):                          |
|  Before: C3 ← F1' ← F2'  After rebase           |
+--------------------------------------------------+

Area Descriptions

• Center: Commit DAG with circles and arrows
• Labels: Branch names as colored rectangles attached to commit nodes
• HEAD: Special yellow pointer label
• Bottom: Rebase before/after comparison

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Assets & Dependencies

• Fonts: LaTeX / sans-serif
• Manim version: ManimCE 0.19.1

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Notes

• Commit hashes shown as 7-char hex (e.g., "a1b2c3d")
• Branch labels styled as colored pill-shaped labels
• HEAD shown as yellow/gold pointer
• Rebase shows old commits (faded) vs new replayed commits (bright)
• Parent edges point left (child → parent = newer → older)