feat: 3D spatial/temporal IR core (opt-in core="ir") - #1
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… lint, and <sf-group> Insert a pure-data intermediate representation between the <sf-*> HTML surface and three.js, behind the unchanged window.__stereoframe seek protocol. A <sf-scene> opts in with core="ir"; the legacy render path is untouched. - IR core (packages/runtime/src/ir/): types/compile/evaluate are Node-safe and pure (no three.js/DOM). compile flattens a timeline algebra (seq/par/stagger/beat) into per-channel segments with bottom-up duration inference; evaluate(t) holds the active segment per channel + additive behaviors + a two-pass reference resolution (dynamic orbit/follow centers) -> FrameState. from-html/backend lower the DOM and apply it. - Hybrid coverage: IR owns turntable/float/sway/orbit/move/dolly/zoom/follow; the rest fall through to the legacy writers (compileAnimations skip set), byte-identical. - <sf-group>: compileScene's element loop is now recursive (addElement); a group builds a real THREE.Group so a verb on the group moves the whole subtree (three.js composes world matrices; the IR writes locals). - Render-free IR lint (cli): ir_dangling_ref / ir_zero_duration / ir_unreachable / ir_channel_conflict, from shared IR tables in vocab.ts; `schema` emits an `ir` block. Verified: bun test green; full example corpus renders byte-identical legacy<->IR (with one documented improvement: turntable+sway now compose additively instead of the legacy sway clobbering the spin); zero new lint false positives across examples. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Extends the opt-in core="ir" pipeline (Surface -> IR -> evaluate(t) -> three.js)
with opacity/material channels and declarative named states, all lowered to the
existing per-channel held model.
- Entrances + material (B): FrameState gains opacity + material channels.
bounce-in (scale, entrance "hold from before window") + fade-in (opacity) +
variant (material chain via the held model; backend lerps colour with THREE.Color
for byte-identical parity) migrate from the legacy fallthrough into pure IR.
DOM-target fade-in stays legacy via a skip3d set.
- Named states (C): <sf-state name><sf-set target …/></sf-state> + <sf-scene initial>
+ <sf-animate verb="to" state>. The initial + each transition resolve into
per-channel tween (transform) + variant (material) segments (from = previous
state's value), resolved by the held model ("latest active state wins"). Adds one
pure `tween` driver; reuses the Phase-5 material appliers. IR-only (sf-state is
inert in legacy).
- Lint: ir_unknown_state, ir_state_requires_core. schema/vocab expose
sf-state/sf-set/to + the opacity/material channels and tween/fade-in/variant kinds.
Verified: bun test green; byte-identical legacy<->IR across the example corpus for
the migrated verbs; a state-toggle composition transitions move+rotate+recolour with
validate idempotency passing. No regressions.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
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What
Inserts a pure-data intermediate representation between
<sf-*>HTML and three.js,behind the unchanged
window.__stereoframeseek protocol. Opt-in per scene viacore="ir"; the legacy render path is untouched (no regressions).Highlights
ir/{types,compile,evaluate}(pure, no three.js/DOM).compileflattens a timeline algebra (seq/par/stagger/beat) into per-channelsegments with bottom-up duration;
evaluate(t)holds the active segment per channelbounce-in/fade-in/variant (entrance + material channels), and named-state
to.The long-tail (path/camera-path/explode/isolate/morph/crossfade-clip/deform +
DOM-target fades) falls through to the legacy writers, byte-identical.
<sf-group>— declarative hierarchy (three.js composes; a verb on the groupmoves the whole subtree).
<sf-state>/<sf-set>+<sf-animate verb="to">+initial,lowered to per-channel tween/material segments resolved by the held model.
ir_dangling_ref,ir_zero_duration,ir_unreachable,ir_channel_conflict,ir_unknown_state,ir_state_requires_core;schemaexposesthe IR vocabulary.
Verified
bun testgreen (195 incl. new IR compile/evaluate/lint tests).turntable+sway now compose; metaball is pre-existing GPU non-determinism —
validateidempotency passes). New
<sf-group>rig + state-toggle compositions verified.window.__stereoframecontract.🤖 Generated with Claude Code