animation-and-camera SKILL.md skillA
animation-and-camera from yuiseki/map-from-scratch is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add yuiseki/map-from-scratch/animation-and-camera@git:20261026.79a684ePins git:20261026.79a684e in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- yuiseki/map-from-scratch
- Path
.agents/skills/animation-and-camera/SKILL.md- Versions recorded
- 1
- Latest version
- git:20261026.79a684e, committed Oct 26, 2026
- Size
- 35,331 bytes
- Repository stars
- 24
- License
- GPL-3.0
What 37 map engines learnt about the camera and everything that moves (on-demand redraw, camera state and transforms, wheel/trackpad/pinch input, fly-to and inertia, fractional zoom, per-frame work budgets while moving, placeholders and fades, time-series playback, near/far planes and terrain under a tilted or globe camera), including what they reverted. Load it when a map-from-scratch request pans, zooms, tilts, flies to places or plays data over time, before writing the render loop, the…
Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.
What the file says
# Animation and camera: one camera state, frames only on change, little work while moving A map moves in three ways: the user drags, pinches and scrolls; the program flies the camera somewhere; and the data itself changes over time. Each one tempts a renderer into the same mistakes. It redraws when nothing changed (Cesium added on-demand rendering to cut CPU use [18]; QGIS 3D idled at ~300% CPU until it did the same, then ~50% [28]; maplibre-rs idled at ~40% CPU on an M1 Max [12]). It lets two pieces of code own the camera, which leaves layers drifting or misplaced [63][71][23]. It feeds input events straight into discrete steps, so trackpads over-zoom [64][87]. And it does the expensive work (tile decoding, label placement, rasterising) inside the frames of a gesture, so the gesture stutters [36][84][16]. The engines converged on one camera state from which every frame's transform is derived, a frame requested only when something invalidates it, animations driven by the renderer's own clock, continuous zoom with discrete levels chosen explicitly, and a time budget that defers or approximates work while the camera moves and finishes it when it stops. …
Read the whole file at its exact version.
How to install
mdr add yuiseki/map-from-scratch/animation-and-camera@sha256:4a795457e9055164The line at the top of this page pins the label git:20261026.79a684e, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.
[](https://markdownregistry.com/a/art_y4zw63kicfsvr4wi)
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Versions
The registry has recorded 1 version of this file, committed on Oct 26, 2026.
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (35331 bytes)
- pass: No zero-width or bidi control characters
- pass: No instruction hidden inside an HTML comment
- pass: No link to an exfiltration or paste host
- pass: No credential-shaped string
- pass: No instruction to send local credentials anywhere
- pass: No text hidden with inline styles
- pass: No prompt-injection phrasing
- pass: No curl or wget piped into a shell
- pass: No recursive delete of root, home or parent
- pass: No instruction to read or print local credentials
- pass: No base64 blob over 200 characters
- pass: No link to a raw IP address
- pass: No script tag
Source
yuiseki/map-from-scratch · 24 stars · license GPL-3.0 · pushed 2026-11-06 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_y4zw63kicfsvr4wi GET https://markdownregistry.com/api/v1/resolve?ref=yuiseki/map-from-scratch/animation-and-camera GET https://markdownregistry.com/api/v1/blob/4a795457e90551646cc09d6d548277b81bfa4cffe3f1f1f3df9e05e7e4c42292
Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.
Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.