# 260614 — Processing & Processing.js deep dive

Date: 2026-06-14 · Source: **SHARD-WP-0004 T4**

## What this is

A deep dive into **Processing** (creative coding) and **Processing.js / p5.js** (browser-run
sketches): **the sketch *is* the document** — a program whose presentation is **live visual
output rendered at view time** in the browser, with **no cached output** by default.

## Why it matters

- The cleanest **program-as-page** case: canonical content = **source text**, presentation =
  **executable render** (no input/output cells, no prose envelope) — sharpens the page model
  (T12/T15) and UC-54/55.
- Adds a **view-time** variant to derivation-projection (the render runs **in the viewer,
  continuously**) and a **continuity** facet (one-shot vs continuous/interactive); continuous
  → static is a **snapshot frame/recording** on the live↔snapshot axis (T6).
- "Execute/render in the viewer" = an explicit **capability + trust/sandbox** surface.

## Yield

- **No new UC** (enrichment / design prior art). Enriches **UC-54, UC-55**; links UC-83,
  UC-84, UC-35.

## Contents

| Path | Role |
|------|------|
| `findings.md` | Program-as-page, view-time/live render, no-cached-output, capability+trust, INTENT mapping, UC disposition (enrichment-only), architecture notes |