# From far away to within.

Independent article case study. Domain: website consumer / Design Engineering presentation.

A single progress evaluator blends an original SVG globe, atmospheric depth layers and an observatory interior. Document-owned scroll maps to bounded scale, translation and opacity; chapter availability changes immediately at explicit boundaries. Native view inputs replace pointer parallax and the static path exposes every chapter in ordinary flow.

## Attribution and evidence

Studied: [Interactive Storytelling for the Web: Building Immersive Stories with Timelines, 3D, and Layered Scenes](https://tympanus.net/codrops/2026/04/20/interactive-storytelling-for-the-web-building-immersive-stories-with-timelines-3d-and-layered-scenes/), Bjørn Fjellstad. Article SHA-256: 807b2a2644a63d7b037a67e04afc0a284f92687c543c127c4dd24e108ae48514. Analysis SHA-256: 95c24110cb1e3c384418c22a0b01b7f4906729cb36ce3ee3d42fe9cb8a23ab6b. Source revision: f30d439dd7f6cba8455eba7867c44eaef09a2f213daed7a501bf3e718515b31e. The revision hashes the article/analysis hashes, the analyst principle and code-block evidence references; it identifies studied evidence, not a claim that the original demo executes.

Original acquisition: unresolved. Original license: unverified. originalSourceAcquired: false. The product Visit request failed with HTTP403. The article separately links its story and states a free three-story scope, but no original story project or source export was acquired. This is not a paid exclusion.

No original article prose, code, artwork, source project or screenshot is distributed here. The authored-code MIT notice applies only to the independent implementation. Original SVG scene art and a browser progress controller replace the source project, generated panorama and authoring tool. No Instorier export, membership, paid image generator or 3D-provider connection is required.

## Initial state and controls

Approach an original pale world, move around its light, then enter an observatory. The same three chapters also work as a stationary reading sequence.

The page starts stationary. Play motion, where present, advances this study’s presentation until paused; text, bounce, portrait, orbit, strand and mascot motion loops, while the event composer stops at its endpoint. Scroll studies advance through ordinary document scroll or their chapter buttons. Static view stops time-based motion; manual controls still inspect values. The three scroll studies instead show every chapter in ordinary reading flow. Pointer parallax centers its decorative layers.

Initial control values:

| Control key | Value |
| --- | --- |
| story | 0 |
| viewX | 0 |
| viewY | 0 |

## Running and editing

Open index.html directly. It contains all runtime code and visuals and needs no package install, account, network, remote asset or browser-origin storage. Edit its inline style and script to change the downloaded page. styles.css and script.js are reference copies of the inline source; changing those copies alone does not change the running page. Repository regeneration overwrites index.html and all generated copies, including any manual edits. Keep a separate copy when editing a download. The repository authoring modules in vendor/codrops-article-studies/scenes-*.mjs and runtime.mjs regenerate these copies through node scripts/build-codrops-article-studies.mjs. Repository regeneration also needs the private source evidence; downloaded-page execution does not.

## Verification boundary

This generation passed the captured article/analysis hash checks, exact ID membership, local canonical Markdown anchor/hash checks, implementation-symbol checks, JavaScript parsing, semantic main/title counts, duplicate-ID checks and runtime URL/storage exclusion. The manifest codeFiles entries identify every emitted file by SHA-256. Each code symbol is a searchable named function, not a claimed executed call trace. Proposed checks are in KNOWLEDGE.json. runtime_verified: false. SG artifact capture proves only a recorded initial render; no interactive runtime, keyboard, accessibility, comfort or performance result is claimed.

Manual Chrome interaction is blocked by extension UI in this session. No alternate browser-control route was used. Preview sizing is native responsive width. Initial-render captures are tracked separately at site/artifacts/full-import/preview-posters/index.json and site/artifacts/full-import/preview-posters/visual-review.json in the repository. No capture receipt is bundled with this download. The bounded initial-render matrix requests all 21 studies at 320 pixels and three representative studies at 1280 pixels; the separate poster surface is 640 × 420. The authored CSS also adapts at 375 and 768 pixels, without claiming those widths were captured. A width request does not mean that capture exists or passed. Motion starts on explicit playback; system reduced motion and the Static view switch stop it.

consumer_reference: consumer-reference/agent-native/registry.json