feat(visual): align the schema, validator, and resolution engine with the 0.8 visual contract
Stage 0 of the five-stage plan in reviews/02-application-code-triage.md: the shared pre-renderer alignment that has to land before slice 4d writes renderer code, so the runtime foundation and Format Specification revision 0.8 cannot drift while three slices are built on top of them. Nothing here draws. The JSON Schema's `visuals` definition was a Phase 0 stub of `camera`, `systems`, and `passes`. It is replaced by the real container - scene, layers, systems, fields, camera, effects, and the exhibit-scope `automation` array that 17.3 previously rejected while 19.1 authorized. Fourteen new definitions cover visual objects, paints, styles, transforms, behaviors, distributions, trails, links, automation tracks, the spawn container, and visual components, and `components.visual` is no longer an unconstrained object. Structural exclusions carry the contract's own prohibitions: no `id` on a visual object, no `links` on an emitter, no `trail` on a render object, and none of the four spawn-only lifecycle names at a system's top level. src/runtime/visual-contract.js is new and plays the role audio-contract.js plays for sections 14-16: the primitive, system, behavior, field, distribution, blend, filter, and post-effect vocabularies; the post-effect parameter tables with their ranges and pass costs; the centralized ceiling table of 19.5 split into authoring bounds and runtime ceilings; and matchVisualTarget, which resolves a path against the four section 8.1 visual target families and distinguishes a dangling reference from a target that exposes no capability. src/runtime/visual-validation.js is new and validates the shared surface: the visuals container, the scene model including the conditional viewport `fit` rule, layers including the rule that a present layer map makes a system's `layer` required, the common system fields and the `spawn` container, procedural fields including the conditional noise `direction`, the post-effect chain, and visual automation with its two declaration scopes, its automatable registry, its loop modes, and its authoring bound. Type-specific system fields are carried through unvalidated and are tightened by 4d, 4e, and 4f. The resolution engine now exposes the four visual families. `target()` returns a capability record with a per-family stage table, replacing the hardcoded `namespace === 'buses'` test for the automation and modulation stages, so a boolean system `visible` correctly has neither. Visual bases sample once from the `visual` stream domain at the exhibit-scope instantiation boundary, fall back to their documented defaults - including the scene center for an unauthored camera position - and clamp through the shared 8.1 safety stage, so a `focalLength` that resolves below 1 becomes 1 rather than dividing by zero. `requireAudioStage` becomes `requireStage(path, stage)` with the old name kept as its automation wrapper. The validator's binding-target check is no longer a regex over two families. It reports ERR_INVALID_REFERENCE for an undeclared layer, system, or effect index and ERR_UNSUPPORTED_TARGET for everything outside the four rows - per-object properties, field strengths, emitter rates - which is the distinction trace 14 of 17.16 and trace 4 of 19.7 both check. exhibits/minimal-visual.xzbt is a new fixture exercising the aligned surface: two layers, a graphic system with system-scope automation, a repeater over a component, a particle system reading a declared field, a spawned emitter with its spawn container, two post-effects, and three bindings reaching three of the four target families. test/phase4-visual-contract.test.mjs adds 29 tests. `npm test` goes from 102 to 131 passing with zero failures; no existing test changed. Co-Authored-By: Claude Opus 5 <[email protected]> Claude-Session: https://claude.ai/code/session_0162Jb1J36judZNT8fHabGVt
This commit is contained in:
Claude Opus 5
@@ -1,5 +1,5 @@
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export const XZBT_FORMAT_VERSION = '0.1';
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export const XZBT_RUNTIME_VERSION = '0.1.0-phase3b';
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export const XZBT_RUNTIME_VERSION = '0.1.0-phase4-stage0';
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export const UINT32_RANGE = 0x1_0000_0000;
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export const RNG_DOMAINS = Object.freeze([
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'cadence',
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@@ -11,10 +11,14 @@ import {
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valueMatchesType
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} from './types.js';
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import { ConditionEvaluator, ValueResolver } from './values.js';
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import { CAMERA_FIELDS, POST_EFFECTS, matchVisualTarget, visualTargetSource } from './visual-contract.js';
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import { applyAutomationMode, automationValueAt, resolveNumericStages, sampleAutomationTrack } from './audio-automation.js';
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const STEP_SECONDS = 1 / 60;
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const NO_STAGES = Object.freeze({ binding: true, automation: false, override: true, modulation: false });
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const AUDIO_BUS_STAGES = Object.freeze({ binding: true, automation: true, override: true, modulation: true });
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export class SignalProvider {
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constructor() {
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this.values = new Map([
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@@ -155,6 +159,7 @@ export class ResolutionEngine {
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this.parameters = new Map();
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this.state = new Map();
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this.busValues = new Map();
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this.visualValues = new Map();
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this.automation = new Map();
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this.modulation = new Map();
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this.preModulation = new Map();
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@@ -182,12 +187,16 @@ export class ResolutionEngine {
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target(path) {
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const parts = path.split('.');
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if (parts.length === 4 && parts[0] === 'audio' && parts[1] === 'buses' && parts[3] === 'gain' && this.document.audio?.buses?.[parts[2]]) {
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return { namespace: 'buses', id: parts[2], spec: { type: 'number', min: 0, max: 4 } };
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return { namespace: 'buses', id: parts[2], spec: { type: 'number', min: 0, max: 4 }, stages: AUDIO_BUS_STAGES };
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}
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// The four visual target families of 19.1. A record with only a `reason` is
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// a visual path that resolves to no capability; the caller reports it.
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const visual = matchVisualTarget(this.document, path);
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if (visual) return visual.reason ? null : visual;
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const [namespace, id, extra] = path.split('.');
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if (extra !== undefined) return null;
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if (namespace === 'parameters' && this.document.parameters?.[id]) return { namespace, id, spec: this.document.parameters[id] };
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if (namespace === 'state' && this.document.state?.[id]) return { namespace, id, spec: this.document.state[id] };
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if (namespace === 'parameters' && this.document.parameters?.[id]) return { namespace, id, spec: this.document.parameters[id], stages: NO_STAGES };
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if (namespace === 'state' && this.document.state?.[id]) return { namespace, id, spec: this.document.state[id], stages: NO_STAGES };
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return null;
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}
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@@ -198,6 +207,12 @@ export class ResolutionEngine {
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if (!this.busValues.has(target.id)) this.busValues.set(target.id, this.valueResolver.evaluate(this.document.audio.buses[target.id].gain ?? 1, this.rng.stream('sound', `bus:${target.id}`), path));
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return this.busValues.get(target.id);
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}
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if (target.namespace.startsWith('visual-')) {
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// Visual system-level bases are sampled once, lazily, from the `visual`
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// stream domain — the exhibit-scope instantiation boundary of 17.14.
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if (!this.visualValues.has(path)) this.visualValues.set(path, this.valueResolver.evaluate(visualTargetSource(this.document, target), this.rng.stream('visual', `target:${path}`), path));
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return this.visualValues.get(path);
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}
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return target.namespace === 'parameters' ? this.parameters.get(target.id) : this.state.get(target.id);
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}
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@@ -212,6 +227,7 @@ export class ResolutionEngine {
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for (const id of Object.keys(this.document.parameters ?? {})) this.resolveTarget(`parameters.${id}`);
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for (const id of Object.keys(this.document.state ?? {})) this.resolveTarget(`state.${id}`);
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for (const id of Object.keys(this.document.audio?.buses ?? {})) this.resolveTarget(`audio.buses.${id}.gain`);
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for (const path of this.visualTargetPaths()) this.resolveTarget(path);
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for (const listener of this.listeners) listener(this);
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return this.snapshot();
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}
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@@ -219,7 +235,13 @@ export class ResolutionEngine {
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resolveTarget(path) {
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if (this.resolved.has(path)) return this.resolved.get(path);
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const target = this.target(path);
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if (!target) throw new RuntimeFault('ERR_INVALID_REFERENCE', `Unknown or unsupported reference '${path}'.`, path);
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if (!target) {
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// A visual path inside a family that names something undeclared is a
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// reference error; one outside every family exposes no capability (19.1).
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const visual = matchVisualTarget(this.document, path);
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if (visual?.reason === 'unsupported') throw new RuntimeFault('ERR_UNSUPPORTED_TARGET', `'${path}' exposes no resolution capability.`, path);
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throw new RuntimeFault('ERR_INVALID_REFERENCE', `Unknown or unsupported reference '${path}'.`, path);
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}
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if (this.resolving.has(path)) throw new RuntimeFault('ERR_CYCLIC_DEPENDENCY', `Resolution cycle reached '${path}'.`, path);
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this.resolving.add(path);
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try {
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@@ -228,7 +250,7 @@ export class ResolutionEngine {
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const winner = this.overrides.select(path);
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let value;
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if (isNumericType(target.spec.type)) {
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const track = target.namespace === 'buses' ? this.automation.get(path) : null;
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const track = target.stages?.automation ? this.automation.get(path) : null;
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value = resolveNumericStages(lower, {
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binding: binding ? (base) => this.bindingValue(binding, target, base) : undefined,
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automation: track ? (base) => applyAutomationMode(base, automationValueAt(track, this.logicalMilliseconds - track.startedAt), track.mode) : undefined,
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@@ -237,7 +259,7 @@ export class ResolutionEngine {
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this.preModulation.set(path, preModulation);
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return preModulation;
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},
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modulation: target.namespace === 'buses' ? [...(this.modulation.get(path)?.values() ?? [])].reduce((sum, contribution) => sum + contribution, 0) : 0,
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modulation: target.stages?.modulation ? [...(this.modulation.get(path)?.values() ?? [])].reduce((sum, contribution) => sum + contribution, 0) : 0,
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min: target.spec.min, max: target.spec.max,
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round: target.spec.type === 'integer' ? roundHalfAwayFromZero : undefined
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});
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@@ -285,8 +307,32 @@ export class ResolutionEngine {
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preModulationValue(path) { this.get(path); return this.preModulation.get(path); }
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/**
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* Every target family the shared pipeline exposes, enumerated so bindings and
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* overrides against them resolve on the same tick as everything else. The
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* four visual families are system-level only (19.1); no per-object property
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* appears here, and none may.
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*/
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visualTargetPaths() {
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const visuals = this.document.visuals;
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if (!visuals) return [];
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const paths = [];
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for (const field of Object.keys(CAMERA_FIELDS)) paths.push(`visuals.camera.${field}`);
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for (const id of Object.keys(visuals.layers ?? {})) paths.push(`visuals.layers.${id}.opacity`);
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for (const id of Object.keys(visuals.systems ?? {})) paths.push(`visuals.systems.${id}.visible`);
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(visuals.effects ?? []).forEach((entry, index) => {
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for (const parameter of Object.keys(POST_EFFECTS[entry?.type]?.numeric ?? {})) paths.push(`visuals.effects[${index}].${parameter}`);
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});
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return paths;
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}
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requireAudioStage(path) {
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if (this.target(path)?.namespace !== 'buses') throw new RuntimeFault('ERR_UNSUPPORTED_TARGET', `Automation/modulation is not exposed for '${path}'.`, path);
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this.requireStage(path, 'automation');
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}
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requireStage(path, stage) {
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const target = this.target(path);
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if (!target?.stages?.[stage]) throw new RuntimeFault('ERR_UNSUPPORTED_TARGET', `The ${stage} stage is not exposed for '${path}'.`, path);
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}
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// Internal engine registration surface. The graph-only authoring syntax does
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@@ -383,7 +429,7 @@ export class ResolutionEngine {
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stateSnapshot() { return Object.fromEntries(this.state); }
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snapshot() { return Object.fromEntries(this.resolved); }
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dispose() {
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this.listeners.clear(); this.automation.clear(); this.modulation.clear(); this.busValues.clear(); this.preModulation.clear();
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this.listeners.clear(); this.automation.clear(); this.modulation.clear(); this.busValues.clear(); this.visualValues.clear(); this.preModulation.clear();
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this.overrides.clear(); this.transitions.clear(); this.resolved.clear();
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}
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}
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@@ -1,4 +1,6 @@
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import { validateAudioSubsystem } from './audio-graph.js';
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import { matchVisualTarget } from './visual-contract.js';
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import { validateVisualSubsystem } from './visual-validation.js';
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import {
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ALLOWED_META_FIELDS,
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ALLOWED_TOP_LEVEL_FIELDS,
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@@ -89,6 +91,7 @@ export function validateExhibit(document, filename = 'document.xzbt') {
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validateDefinitions(document, errors);
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validateBindings(document, errors);
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validateAudioSubsystem(document, errors, { validateValueSpec, pushError });
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validateVisualSubsystem(document, errors, { validateValueSpec, pushError });
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return { valid: errors.length === 0, errors, warnings: [], filename };
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}
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@@ -219,6 +222,34 @@ function validateCondition(document, condition, path, errors) {
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}
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}
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/**
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* The exposed binding-target surface: `parameters.*`, `state.*`,
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* `audio.buses.<id>.gain`, and the four visual target families 19.1 adds. A
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* target inside a family that names something undeclared is
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* ERR_INVALID_REFERENCE; one outside every family is ERR_UNSUPPORTED_TARGET.
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* Per-object visual properties fall in the second case and stay there in 0.1.
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*/
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function bindingTargetType(document, target) {
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const visual = matchVisualTarget(document, target);
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if (visual) return visual.reason ? null : visual.spec.type;
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if (typeof target !== 'string') return null;
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if (/^(parameters|state)\.[a-z][a-z0-9_-]*$/.test(target) || /^audio\.buses\.[a-z][a-z0-9_-]*\.gain$/.test(target)) return referenceType(document, target);
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return null;
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}
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function validateBindingTarget(document, target, location, errors) {
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const visual = matchVisualTarget(document, target);
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if (visual) {
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if (visual.reason === 'reference') pushError(errors, 'ERR_INVALID_REFERENCE', location, `Binding target '${target}' does not resolve.`);
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else if (visual.reason === 'unsupported') pushError(errors, 'ERR_UNSUPPORTED_TARGET', location, `Binding target '${target}' is not exposed. Per-object visual properties are not externally addressable in 0.1.`);
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return;
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}
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validateReference(document, target, location, errors);
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if (!(typeof target === 'string' && (/^(parameters|state)\.[a-z][a-z0-9_-]*$/.test(target) || /^audio\.buses\.[a-z][a-z0-9_-]*\.gain$/.test(target)))) {
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pushError(errors, 'ERR_UNSUPPORTED_TARGET', location, `Binding target '${target}' is not exposed.`);
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}
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}
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function validateBindings(document, errors) {
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if (document.bindings === undefined) return;
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if (!Array.isArray(document.bindings)) return pushError(errors, 'ERR_SCHEMA_VALIDATION', '$.bindings', 'bindings must be an array.');
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@@ -229,15 +260,14 @@ function validateBindings(document, errors) {
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if (!isPlainObject(binding)) return pushError(errors, 'ERR_SCHEMA_VALIDATION', path, 'Binding must be an object.');
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for (const field of Object.keys(binding)) if (!BINDING_FIELDS.has(field)) pushError(errors, 'ERR_UNKNOWN_FIELD', `${path}.${field}`, `Unknown binding field '${field}'.`);
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validateReference(document, binding.source, `${path}.source`, errors);
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validateReference(document, binding.target, `${path}.target`, errors);
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if (!(typeof binding.target === 'string' && (/^(parameters|state)\.[a-z][a-z0-9_-]*$/.test(binding.target) || /^audio\.buses\.[a-z][a-z0-9_-]*\.gain$/.test(binding.target)))) pushError(errors, 'ERR_UNSUPPORTED_TARGET', `${path}.target`, `Binding target '${binding.target}' is not exposed.`);
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validateBindingTarget(document, binding.target, `${path}.target`, errors);
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for (const field of ['scale', 'offset']) if (binding[field] !== undefined && !Number.isFinite(binding[field])) pushError(errors, 'ERR_TYPE_MISMATCH', `${path}.${field}`, `${field} must be finite.`);
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if (binding.clamp !== undefined && (!Array.isArray(binding.clamp) || binding.clamp.length !== 2 || binding.clamp.some((value) => !Number.isFinite(value)))) pushError(errors, 'ERR_SCHEMA_VALIDATION', `${path}.clamp`, 'clamp must contain two finite numbers.');
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else if (binding.clamp?.[0] > binding.clamp?.[1]) pushError(errors, 'ERR_OUT_OF_BOUNDS', `${path}.clamp`, 'clamp minimum cannot exceed maximum.');
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if (binding.smoothing !== undefined && (typeof binding.smoothing !== 'string' || !DURATION_PATTERN.test(binding.smoothing))) pushError(errors, 'ERR_INVALID_DURATION', `${path}.smoothing`, 'Invalid smoothing duration.');
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if (binding.when !== undefined) validateCondition(document, binding.when, `${path}.when`, errors);
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const sourceType = referenceType(document, binding.source);
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const targetType = referenceType(document, binding.target);
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const targetType = bindingTargetType(document, binding.target);
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if (sourceType && targetType) {
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const transformed = binding.scale !== undefined || binding.offset !== undefined || binding.clamp !== undefined || (binding.smoothing !== undefined && binding.smoothing !== '0ms');
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if (transformed && (!isNumericType(sourceType) || !isNumericType(targetType))) pushError(errors, 'ERR_TYPE_MISMATCH', path, 'Binding transforms require numeric endpoints.');
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@@ -0,0 +1,300 @@
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// Visual subsystem contract registries, sections 17-19 of the Format
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// Specification at revision 0.8. This module is the single place the runtime
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// reads the normative vocabularies, ceilings, and target capabilities from, in
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// the same role `audio-contract.js` plays for sections 14-16.
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//
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// Stage 0 scope (pre-slice-4d): vocabularies, the centralized ceiling table,
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// the four section 8.1 target families, and the structural surface of the
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// `visuals` block. It draws nothing. Slices 4d, 4e, and 4f add the renderer,
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// the procedural systems, and the automation/lifecycle/effect execution that
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// these registries describe.
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import { ID_PATTERN } from './constants.js';
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// ---------------------------------------------------------------------------
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// Vocabularies
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// ---------------------------------------------------------------------------
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export const COORDINATE_SPACES = Object.freeze(['normalized', 'viewport', 'virtual']);
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export const FIT_MODES = Object.freeze(['contain', 'cover', 'stretch']);
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/** Visual System Set 0.1 (17.7, 18.2, 18.4, 18.5). */
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export const VISUAL_SYSTEM_TYPES = Object.freeze(['graphic', 'particles', 'emitter', 'repeater']);
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/** Visual Primitive Set 0.1 (17.9) — closed at fourteen geometry primitives. */
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export const VISUAL_PRIMITIVE_TYPES = Object.freeze([
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'point', 'line', 'polyline', 'polygon', 'rectangle', 'rounded-rectangle',
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'ellipse', 'arc', 'ring', 'path', 'bezier', 'spline', 'text', 'group'
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]);
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/** The fifteenth visual *object* type, which declares no geometry (18.1). */
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export const VISUAL_OBJECT_TYPES = Object.freeze([...VISUAL_PRIMITIVE_TYPES, 'component']);
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/** Visual Behavior Set 0.1 (18.6). */
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export const VISUAL_BEHAVIOR_TYPES = Object.freeze([
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'drift', 'rotate', 'oscillate', 'orbit', 'wander', 'follow-path', 'point-wander',
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'pulse', 'twinkle', 'noise-displace', 'face-motion', 'wrap', 'bounce',
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'attract', 'repel', 'field-follow', 'morph'
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]);
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/** Procedural field set (18.7). */
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export const VISUAL_FIELD_TYPES = Object.freeze([
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'directional', 'radial', 'vortex', 'attractor', 'repulsor', 'noise'
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]);
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/** Placement distribution set (18.3). */
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export const DISTRIBUTION_TYPES = Object.freeze([
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'point', 'uniform', 'line', 'rectangle', 'ellipse', 'ring', 'path', 'grid', 'depth'
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]);
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/** Safe blend set (17.12). */
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export const BLEND_MODES = Object.freeze([
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'normal', 'add', 'screen', 'multiply', 'overlay', 'lighten', 'darken', 'difference'
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]);
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/** Object filter vocabulary (17.12). */
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export const FILTER_TYPES = Object.freeze([
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'brightness', 'contrast', 'saturate', 'hue-rotate', 'grayscale', 'sepia', 'invert'
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||||
]);
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||||
|
||||
/** Automation curves and loop modes (19.1). */
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export const AUTOMATION_CURVES = Object.freeze(['step', 'linear', 'exponential', 'smooth']);
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export const AUTOMATION_MODES = Object.freeze(['absolute', 'offset', 'scale']);
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export const LOOP_MODES = Object.freeze(['repeat', 'ping-pong']);
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||||
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export const LIFECYCLE_MODES = Object.freeze(['persistent', 'spawned']);
|
||||
|
||||
/**
|
||||
* Fields of the `spawn` container (19.2). Section 17.7 makes each of these
|
||||
* `ERR_UNKNOWN_FIELD` at the top level of a system, which is what keeps a
|
||||
* spawned instance's `lifetime` distinct from a particle's.
|
||||
*/
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export const SPAWN_FIELDS = Object.freeze(['lifetime', 'release', 'ownership', 'inputs', 'cancelWithScenario']);
|
||||
|
||||
// ---------------------------------------------------------------------------
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||||
// Camera and post-effects
|
||||
// ---------------------------------------------------------------------------
|
||||
|
||||
/** 19.3. `projection` is authored once: not automatable, not bindable. */
|
||||
export const CAMERA_FIELDS = Object.freeze({
|
||||
x: { type: 'number' },
|
||||
y: { type: 'number' },
|
||||
zoom: { type: 'number', min: 0.01, max: 100, default: 1 },
|
||||
rotation: { type: 'number', default: 0 },
|
||||
focalLength: { type: 'number', min: 1, max: 100_000, default: 1000 }
|
||||
});
|
||||
export const CAMERA_PROJECTIONS = Object.freeze(['orthographic', 'perspective']);
|
||||
|
||||
/**
|
||||
* 19.4, in normative array order. `numeric` carries each parameter's range and
|
||||
* default; `colors` are authored literals and take no ValueSpec. `passes` is
|
||||
* the frame budget cost: blur and bloom read back the frame and cost two.
|
||||
*/
|
||||
export const POST_EFFECTS = Object.freeze({
|
||||
vignette: {
|
||||
passes: 1,
|
||||
numeric: { amount: { min: 0, max: 1, default: 0.5 }, radius: { min: 0, max: 1, default: 0.75 }, softness: { min: 0, max: 1, default: 0.5 } },
|
||||
colors: { color: '#000000' }
|
||||
},
|
||||
scanlines: {
|
||||
passes: 1,
|
||||
numeric: { amount: { min: 0, max: 1, default: 0.3 }, spacing: { min: 1, max: 64, default: 3 }, thickness: { min: 0, max: 1, default: 0.5 }, speed: { default: 0 } },
|
||||
colors: {}
|
||||
},
|
||||
grain: {
|
||||
passes: 1,
|
||||
numeric: { amount: { min: 0, max: 1, default: 0.15 }, scale: { min: 0.25, max: 16, default: 1 }, speed: { min: 0, max: 60, default: 24 } },
|
||||
colors: {}
|
||||
},
|
||||
'color-adjust': {
|
||||
passes: 1,
|
||||
numeric: { brightness: { min: 0, max: 4, default: 1 }, contrast: { min: 0, max: 4, default: 1 }, saturation: { min: 0, max: 4, default: 1 }, hueRotate: { default: 0 } },
|
||||
colors: {}
|
||||
},
|
||||
blur: { passes: 2, numeric: { radius: { min: 0, max: 32, default: 4 } }, colors: {} },
|
||||
bloom: {
|
||||
passes: 2,
|
||||
numeric: { threshold: { min: 0, max: 1, default: 0.7 }, intensity: { min: 0, max: 2, default: 0.6 }, radius: { min: 0, max: 32, default: 8 } },
|
||||
colors: {}
|
||||
},
|
||||
fade: { passes: 1, numeric: { amount: { min: 0, max: 1, default: 0 } }, colors: { color: '#000000' } }
|
||||
});
|
||||
|
||||
export const POST_EFFECT_TYPES = Object.freeze(Object.keys(POST_EFFECTS));
|
||||
|
||||
/**
|
||||
* `color-adjust`'s authored parameter names map onto the 17.12 filter
|
||||
* operations without renaming the authored fields (19.4).
|
||||
*/
|
||||
export const EFFECT_FILTER_OPERATIONS = Object.freeze({
|
||||
brightness: 'brightness', contrast: 'contrast', saturation: 'saturate', hueRotate: 'hue-rotate'
|
||||
});
|
||||
|
||||
// ---------------------------------------------------------------------------
|
||||
// The centralized ceiling table (19.5)
|
||||
// ---------------------------------------------------------------------------
|
||||
|
||||
/**
|
||||
* Authoring bounds reject an exhibit at import; runtime ceilings shed work by a
|
||||
* documented deterministic rule and keep the exhibit running. Every aggregate
|
||||
* value here is provisional until the slice 4h GC6 measurement runs — its
|
||||
* shape is normative now, its number is not measured.
|
||||
*/
|
||||
export const VISUAL_LIMITS = Object.freeze({
|
||||
authoring: Object.freeze({
|
||||
layers: 16,
|
||||
declaredSystems: 64,
|
||||
expandedStaticObjects: 16_384,
|
||||
groupNesting: 8,
|
||||
componentNesting: 8,
|
||||
polygonVertices: 512,
|
||||
pathCommands: 512,
|
||||
splinePoints: 256,
|
||||
gradientStops: 16,
|
||||
strokeDashEntries: 8,
|
||||
filtersPerObject: 4,
|
||||
behaviorsPerObject: 8,
|
||||
declaredFields: 8,
|
||||
referencedFieldsPerSystem: 4,
|
||||
particleCapacity: 4096,
|
||||
emitterCapacity: 512,
|
||||
repeaterCount: 1024,
|
||||
burstEntries: 16,
|
||||
gridDimension: 256,
|
||||
trailLength: 128,
|
||||
maxLinks: 1024,
|
||||
nearestLinksPerItem: 8,
|
||||
pairwiseLinkedPopulation: 256,
|
||||
textCharacters: 256,
|
||||
postEffectEntries: 4,
|
||||
effectRadius: 32,
|
||||
automationTracks: 128,
|
||||
automationPoints: 2048,
|
||||
automationPointsPerTrack: 256
|
||||
}),
|
||||
runtime: Object.freeze({
|
||||
liveParticles: 8192,
|
||||
liveEmittedItems: 2048,
|
||||
liveSpawnedInstances: 64,
|
||||
linkSegmentsPerTick: 4096,
|
||||
trailHistorySamples: 32_768,
|
||||
fieldEvaluationsPerTick: 32_768,
|
||||
offscreenBuffersPerFrame: 16,
|
||||
postEffectPassesPerFrame: 8,
|
||||
devicePixelRatioCeiling: 2,
|
||||
backingStoreEdge: 4096,
|
||||
liveAutomationTracks: 128,
|
||||
liveAutomationPoints: 2048,
|
||||
sustainedShedTicks: 120
|
||||
})
|
||||
});
|
||||
|
||||
/** 19.5: one diagnostic per (code, subject) key per logical second. */
|
||||
export const DIAGNOSTIC_CADENCE_MS = 1000;
|
||||
|
||||
// ---------------------------------------------------------------------------
|
||||
// The four section 8.1 visual target families (19.1)
|
||||
// ---------------------------------------------------------------------------
|
||||
|
||||
const EFFECT_INDEX_PATTERN = /^visuals\.effects\[(\d+)\]\.([A-Za-z][A-Za-z0-9]*)$/;
|
||||
|
||||
/**
|
||||
* Resolve a target path against the four visual target families. Returns a
|
||||
* capability record, or `null` when the path is not a visual target at all.
|
||||
*
|
||||
* A path inside a family that names something undeclared returns
|
||||
* `{ reason: 'reference' }` so the caller can raise ERR_INVALID_REFERENCE
|
||||
* rather than ERR_UNSUPPORTED_TARGET; a path that looks visual but is outside
|
||||
* every family returns `{ reason: 'unsupported' }`. That distinction is what
|
||||
* trace 4 of 19.7 and trace 14 of 17.16 both check.
|
||||
*/
|
||||
export function matchVisualTarget(document, path) {
|
||||
if (typeof path !== 'string' || !path.startsWith('visuals.')) return null;
|
||||
const visuals = document?.visuals;
|
||||
|
||||
const effect = EFFECT_INDEX_PATTERN.exec(path);
|
||||
if (effect) {
|
||||
const index = Number(effect[1]);
|
||||
const entry = Array.isArray(visuals?.effects) ? visuals.effects[index] : undefined;
|
||||
if (!entry) return { reason: 'reference' };
|
||||
const definition = POST_EFFECTS[entry.type];
|
||||
const parameter = definition?.numeric?.[effect[2]];
|
||||
if (!parameter) return { reason: 'unsupported' };
|
||||
return {
|
||||
family: 'visuals.effects', namespace: 'visual-effect', id: `${index}.${effect[2]}`,
|
||||
index, parameter: effect[2],
|
||||
spec: { type: 'number', min: parameter.min, max: parameter.max },
|
||||
default: parameter.default,
|
||||
stages: { binding: true, automation: true, override: true, modulation: false }
|
||||
};
|
||||
}
|
||||
|
||||
const parts = path.split('.');
|
||||
if (parts.length === 3 && parts[1] === 'camera') {
|
||||
const field = CAMERA_FIELDS[parts[2]];
|
||||
if (!field) return { reason: 'unsupported' };
|
||||
return {
|
||||
family: 'visuals.camera', namespace: 'visual-camera', id: parts[2],
|
||||
spec: { type: 'number', min: field.min, max: field.max },
|
||||
default: field.default,
|
||||
stages: { binding: true, automation: true, override: true, modulation: true }
|
||||
};
|
||||
}
|
||||
|
||||
if (parts.length === 4 && parts[1] === 'layers') {
|
||||
if (!ID_PATTERN.test(parts[2]) || !visuals?.layers?.[parts[2]]) return { reason: 'reference' };
|
||||
if (parts[3] !== 'opacity') return { reason: 'unsupported' };
|
||||
return {
|
||||
family: 'visuals.layers', namespace: 'visual-layer', id: parts[2],
|
||||
spec: { type: 'number', min: 0, max: 1 }, default: 1,
|
||||
stages: { binding: true, automation: true, override: true, modulation: false }
|
||||
};
|
||||
}
|
||||
|
||||
if (parts.length === 4 && parts[1] === 'systems') {
|
||||
if (!ID_PATTERN.test(parts[2]) || !visuals?.systems?.[parts[2]]) return { reason: 'reference' };
|
||||
if (parts[3] !== 'visible') return { reason: 'unsupported' };
|
||||
return {
|
||||
family: 'visuals.systems', namespace: 'visual-system', id: parts[2],
|
||||
spec: { type: 'boolean' }, default: true,
|
||||
// Boolean targets take no automation and no modulation stage: those
|
||||
// stages are absent, not identity hooks (8.1).
|
||||
stages: { binding: true, automation: false, override: true, modulation: false }
|
||||
};
|
||||
}
|
||||
|
||||
return { reason: 'unsupported' };
|
||||
}
|
||||
|
||||
/** The authored ValueSpec behind a visual target, or its documented default. */
|
||||
export function visualTargetSource(document, target) {
|
||||
const visuals = document?.visuals ?? {};
|
||||
switch (target.namespace) {
|
||||
case 'visual-camera': return visuals.camera?.[target.id] ?? cameraDefault(visuals, target.id);
|
||||
case 'visual-layer': return visuals.layers?.[target.id]?.opacity ?? 1;
|
||||
case 'visual-system': return visuals.systems?.[target.id]?.visible ?? true;
|
||||
case 'visual-effect': return visuals.effects?.[target.index]?.[target.parameter] ?? target.default;
|
||||
default: return undefined;
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* 19.3: the camera default is the scene center, so an exhibit that never
|
||||
* mentions the camera looks identical to one that declares its defaults.
|
||||
*/
|
||||
function cameraDefault(visuals, field) {
|
||||
if (field !== 'x' && field !== 'y') return CAMERA_FIELDS[field].default;
|
||||
const scene = visuals.scene ?? {};
|
||||
if (scene.coordinateSpace === 'normalized') return 0.5;
|
||||
// In `viewport` space the scene rectangle *is* the display rectangle, whose
|
||||
// size is not known at import. The resolved base is 0 here and slice 4d
|
||||
// substitutes the live display center for an unauthored camera position.
|
||||
const extent = field === 'x' ? scene.width : scene.height;
|
||||
return Number.isFinite(extent) ? extent / 2 : 0;
|
||||
}
|
||||
|
||||
/** Frame pass cost of an authored effect chain (19.4). */
|
||||
export function postEffectPassCount(effects) {
|
||||
if (!Array.isArray(effects)) return 0;
|
||||
return effects.reduce((total, entry) => total + (POST_EFFECTS[entry?.type]?.passes ?? 0), 0);
|
||||
}
|
||||
@@ -0,0 +1,504 @@
|
||||
// Structural and semantic validation of the `visuals` block, sections 17-19 at
|
||||
// Format Specification revision 0.8.
|
||||
//
|
||||
// Stage 0 scope (pre-slice-4d). This module validates the *shared* surface that
|
||||
// the schema, the target resolver, and every later visual slice all depend on:
|
||||
// the `visuals` container and its allowed fields, the scene model, layers, the
|
||||
// common system fields and the `spawn` container, procedural fields, the
|
||||
// post-effect chain, and visual automation with its two declaration scopes and
|
||||
// its automatable registry. Type-specific system fields — a particle system's
|
||||
// emission block, an emitter's bursts, a repeater's distribution — are carried
|
||||
// through unvalidated and are tightened by slices 4d, 4e, and 4f, which is
|
||||
// where the runtime that reads them lands.
|
||||
|
||||
import { ID_PATTERN } from './constants.js';
|
||||
import {
|
||||
AUTOMATION_CURVES,
|
||||
AUTOMATION_MODES,
|
||||
BLEND_MODES,
|
||||
CAMERA_FIELDS,
|
||||
CAMERA_PROJECTIONS,
|
||||
COORDINATE_SPACES,
|
||||
FIT_MODES,
|
||||
LIFECYCLE_MODES,
|
||||
LOOP_MODES,
|
||||
POST_EFFECTS,
|
||||
SPAWN_FIELDS,
|
||||
VISUAL_FIELD_TYPES,
|
||||
VISUAL_LIMITS,
|
||||
VISUAL_SYSTEM_TYPES
|
||||
} from './visual-contract.js';
|
||||
import { DURATION_PATTERN } from './types.js';
|
||||
|
||||
const AUTHORING = VISUAL_LIMITS.authoring;
|
||||
|
||||
const VISUALS_FIELDS = new Set(['scene', 'layers', 'systems', 'fields', 'camera', 'effects', 'automation']);
|
||||
const SCENE_FIELDS = new Set(['coordinateSpace', 'width', 'height', 'fit', 'background', 'depthFog']);
|
||||
const DEPTH_FOG_FIELDS = new Set(['color', 'near', 'far', 'density']);
|
||||
const LAYER_FIELDS = new Set(['opacity', 'blend', 'visible', 'parallax']);
|
||||
const CAMERA_ALLOWED = new Set([...Object.keys(CAMERA_FIELDS), 'projection']);
|
||||
const COMMON_SYSTEM_FIELDS = new Set(['type', 'layer', 'visible', 'lifecycle', 'automation', 'spawn']);
|
||||
const SPAWN_ONLY_AT_TOP_LEVEL = new Set(['release', 'ownership', 'inputs', 'cancelWithScenario']);
|
||||
/** 17.7: `lifetime` at a system's top level is the per-item duration, and only these two types have one. */
|
||||
const TYPES_WITH_ITEM_LIFETIME = new Set(['particles', 'emitter']);
|
||||
const TRACK_FIELDS = new Set(['target', 'mode', 'interpolation', 'loop', 'points']);
|
||||
const FIELD_COMMON = new Set(['type', 'bounds', 'enabled']);
|
||||
const FIELD_TYPE_FIELDS = Object.freeze({
|
||||
directional: ['direction', 'strength'],
|
||||
radial: ['center', 'strength', 'falloff', 'minDistance', 'maxDistance'],
|
||||
vortex: ['center', 'strength', 'falloff', 'minDistance', 'maxDistance'],
|
||||
attractor: ['center', 'strength', 'falloff', 'minDistance', 'maxDistance'],
|
||||
repulsor: ['center', 'strength', 'falloff', 'minDistance', 'maxDistance'],
|
||||
noise: ['scale', 'speed', 'octaves', 'persistence', 'amplitude', 'mode', 'direction', 'center', 'size']
|
||||
});
|
||||
|
||||
/** Numeric object properties a `graphic` system's automation may address (19.1). */
|
||||
const GRAPHIC_NUMERIC_PROPERTIES = new Set([
|
||||
'position.x', 'position.y', 'z',
|
||||
'transform.translate.x', 'transform.translate.y', 'transform.translate.z',
|
||||
'transform.rotation', 'transform.scale.x', 'transform.scale.y',
|
||||
'transform.skew.x', 'transform.skew.y', 'transform.origin.x', 'transform.origin.y',
|
||||
'style.opacity', 'style.strokeWidth', 'style.pointSize', 'style.strokeDashOffset', 'style.blur',
|
||||
'size.width', 'size.height', 'radius', 'innerRadius', 'startAngle', 'endAngle', 'tension'
|
||||
]);
|
||||
const POINT_PROPERTY = /^points\[\d+\]\.[xyz]$/;
|
||||
|
||||
/** 19.1: the automatable properties of a procedural system. A repeater has none. */
|
||||
const SYSTEM_AUTOMATABLE = Object.freeze({
|
||||
particles: new Set(['rate', 'position.x', 'position.y', 'acceleration.x', 'acceleration.y', 'acceleration.z', 'drag']),
|
||||
emitter: new Set(['rate', 'position.x', 'position.y', 'acceleration.x', 'acceleration.y', 'acceleration.z', 'drag']),
|
||||
repeater: new Set()
|
||||
});
|
||||
|
||||
const EFFECT_INDEX = /^effects\[(\d+)\]\.([A-Za-z][A-Za-z0-9]*)$/;
|
||||
|
||||
function isPlainObject(value) {
|
||||
return typeof value === 'object' && value !== null && !Array.isArray(value);
|
||||
}
|
||||
|
||||
function isColor(value) {
|
||||
return typeof value === 'string' && value.length > 0;
|
||||
}
|
||||
|
||||
export function validateVisualSubsystem(document, errors, helpers) {
|
||||
const { validateValueSpec, pushError } = helpers;
|
||||
const fail = (code, path, message) => pushError(errors, code, path, message);
|
||||
const visuals = document.visuals;
|
||||
if (visuals === undefined) return;
|
||||
if (!isPlainObject(visuals)) return fail('ERR_SCHEMA_VALIDATION', '$.visuals', 'visuals must be an object.');
|
||||
|
||||
for (const field of Object.keys(visuals)) {
|
||||
if (!VISUALS_FIELDS.has(field)) fail('ERR_UNKNOWN_FIELD', `$.visuals.${field}`, `Unrecognized visuals field '${field}'.`);
|
||||
}
|
||||
|
||||
const scene = validateScene(document, visuals.scene, errors, helpers);
|
||||
const layers = validateLayers(document, visuals.layers, errors, helpers);
|
||||
validateCamera(document, visuals.camera, errors, helpers);
|
||||
const effects = validateEffects(document, visuals.effects, errors, helpers);
|
||||
const fields = validateFields(document, visuals.fields, errors, helpers);
|
||||
const systems = validateSystems(document, visuals.systems, layers, fields, errors, helpers);
|
||||
|
||||
const context = { scene, layers, effects, systems };
|
||||
let tracks = 0;
|
||||
let points = 0;
|
||||
const count = (result) => { tracks += result.tracks; points += result.points; };
|
||||
|
||||
count(validateAutomationArray(document, visuals.automation, '$.visuals.automation', { scope: 'exhibit', context }, errors, helpers));
|
||||
for (const [id, system] of Object.entries(isPlainObject(visuals.systems) ? visuals.systems : {})) {
|
||||
if (!isPlainObject(system)) continue;
|
||||
count(validateAutomationArray(document, system.automation, `$.visuals.systems.${id}.automation`, { scope: 'system', systemId: id, system, context }, errors, helpers));
|
||||
}
|
||||
|
||||
// 19.1: the authoring bound counts declared records once per declaration.
|
||||
// The live budget of the same numbers is a runtime check at spawn time.
|
||||
if (tracks > AUTHORING.automationTracks) fail('ERR_VISUAL_LIMIT_EXCEEDED', '$.visuals', `Declared automation tracks (${tracks}) exceed the ${AUTHORING.automationTracks} authoring bound.`);
|
||||
if (points > AUTHORING.automationPoints) fail('ERR_VISUAL_LIMIT_EXCEEDED', '$.visuals', `Declared automation points (${points}) exceed the ${AUTHORING.automationPoints} authoring bound.`);
|
||||
}
|
||||
|
||||
// ---------------------------------------------------------------------------
|
||||
|
||||
function validateScene(document, scene, errors, { validateValueSpec, pushError }) {
|
||||
const fail = (code, path, message) => pushError(errors, code, path, message);
|
||||
if (scene === undefined) {
|
||||
fail('ERR_SCHEMA_VALIDATION', '$.visuals.scene', 'visuals.scene is required when visuals is present.');
|
||||
return {};
|
||||
}
|
||||
if (!isPlainObject(scene)) {
|
||||
fail('ERR_SCHEMA_VALIDATION', '$.visuals.scene', 'scene must be an object.');
|
||||
return {};
|
||||
}
|
||||
for (const field of Object.keys(scene)) {
|
||||
if (!SCENE_FIELDS.has(field)) fail('ERR_UNKNOWN_FIELD', `$.visuals.scene.${field}`, `Unrecognized scene field '${field}'.`);
|
||||
}
|
||||
const space = scene.coordinateSpace ?? 'virtual';
|
||||
if (!COORDINATE_SPACES.includes(space)) fail('ERR_SCHEMA_VALIDATION', '$.visuals.scene.coordinateSpace', `Unsupported coordinate space '${scene.coordinateSpace}'.`);
|
||||
|
||||
const virtual = space === 'virtual';
|
||||
for (const axis of ['width', 'height']) {
|
||||
const value = scene[axis];
|
||||
if (!virtual && value !== undefined) fail('ERR_UNKNOWN_FIELD', `$.visuals.scene.${axis}`, `${axis} is only declared in the 'virtual' coordinate space.`);
|
||||
else if (virtual && value === undefined) fail('ERR_SCHEMA_VALIDATION', `$.visuals.scene.${axis}`, `${axis} is required in the 'virtual' coordinate space.`);
|
||||
else if (virtual && (!Number.isFinite(value) || value < 1 || value > 16_384)) fail('ERR_OUT_OF_BOUNDS', `$.visuals.scene.${axis}`, `${axis} must be between 1 and 16384.`);
|
||||
}
|
||||
|
||||
// 17.4 (V17): in `viewport` an absent `fit` is accepted and takes no default;
|
||||
// only an explicitly authored non-`stretch` value is rejected.
|
||||
if (scene.fit !== undefined) {
|
||||
if (!FIT_MODES.includes(scene.fit)) fail('ERR_SCHEMA_VALIDATION', '$.visuals.scene.fit', `Unsupported fit '${scene.fit}'.`);
|
||||
else if (space === 'viewport' && scene.fit !== 'stretch') fail('ERR_SCHEMA_VALIDATION', '$.visuals.scene.fit', "An explicit fit other than 'stretch' has no meaning in the 'viewport' coordinate space.");
|
||||
}
|
||||
if (scene.background !== undefined && !isColor(scene.background)) fail('ERR_TYPE_MISMATCH', '$.visuals.scene.background', 'background must be a color.');
|
||||
|
||||
if (scene.depthFog !== undefined) {
|
||||
const fog = scene.depthFog;
|
||||
if (!isPlainObject(fog)) fail('ERR_SCHEMA_VALIDATION', '$.visuals.scene.depthFog', 'depthFog must be an object.');
|
||||
else {
|
||||
for (const field of Object.keys(fog)) if (!DEPTH_FOG_FIELDS.has(field)) fail('ERR_UNKNOWN_FIELD', `$.visuals.scene.depthFog.${field}`, `Unrecognized depthFog field '${field}'.`);
|
||||
if (!isColor(fog.color)) fail('ERR_SCHEMA_VALIDATION', '$.visuals.scene.depthFog.color', 'depthFog.color is required.');
|
||||
if (!Number.isFinite(fog.far)) fail('ERR_SCHEMA_VALIDATION', '$.visuals.scene.depthFog.far', 'depthFog.far is required.');
|
||||
else if (Number.isFinite(fog.near ?? 0) && fog.far <= (fog.near ?? 0)) fail('ERR_INVALID_RANGE_ORDER', '$.visuals.scene.depthFog.far', 'depthFog.far must exceed depthFog.near.');
|
||||
if (fog.density !== undefined && (!Number.isFinite(fog.density) || fog.density < 0 || fog.density > 1)) fail('ERR_OUT_OF_BOUNDS', '$.visuals.scene.depthFog.density', 'depthFog.density must be between 0 and 1.');
|
||||
}
|
||||
}
|
||||
return scene;
|
||||
}
|
||||
|
||||
function validateLayers(document, layers, errors, { validateValueSpec, pushError }) {
|
||||
const fail = (code, path, message) => pushError(errors, code, path, message);
|
||||
if (layers === undefined) return null;
|
||||
if (!isPlainObject(layers)) {
|
||||
fail('ERR_SCHEMA_VALIDATION', '$.visuals.layers', 'layers must be an object.');
|
||||
return null;
|
||||
}
|
||||
const ids = Object.keys(layers);
|
||||
// 17.5 (V17): a present-but-empty layer map is rejected; an exhibit that
|
||||
// wants the implicit layer omits the key entirely.
|
||||
if (ids.length === 0) {
|
||||
fail('ERR_SCHEMA_VALIDATION', '$.visuals.layers', 'An empty layer map is not a layer set; omit the key for the implicit layer.');
|
||||
return null;
|
||||
}
|
||||
if (ids.length > AUTHORING.layers) fail('ERR_VISUAL_LIMIT_EXCEEDED', '$.visuals.layers', `At most ${AUTHORING.layers} layers.`);
|
||||
for (const [id, layer] of Object.entries(layers)) {
|
||||
const path = `$.visuals.layers.${id}`;
|
||||
if (!ID_PATTERN.test(id)) fail('ERR_INVALID_ID', path, `Layer ID '${id}' is invalid.`);
|
||||
if (!isPlainObject(layer)) { fail('ERR_SCHEMA_VALIDATION', path, 'Layer must be an object.'); continue; }
|
||||
for (const field of Object.keys(layer)) if (!LAYER_FIELDS.has(field)) fail('ERR_UNKNOWN_FIELD', `${path}.${field}`, `Unrecognized layer field '${field}'.`);
|
||||
if (layer.opacity !== undefined) validateValueSpec(document, layer.opacity, `${path}.opacity`, errors);
|
||||
if (layer.visible !== undefined) validateValueSpec(document, layer.visible, `${path}.visible`, errors);
|
||||
if (layer.blend !== undefined && !BLEND_MODES.includes(layer.blend)) fail('ERR_SCHEMA_VALIDATION', `${path}.blend`, `Unsupported blend mode '${layer.blend}'.`);
|
||||
if (layer.parallax !== undefined && !Number.isFinite(layer.parallax)) fail('ERR_TYPE_MISMATCH', `${path}.parallax`, 'parallax must be a finite number.');
|
||||
}
|
||||
return new Set(ids);
|
||||
}
|
||||
|
||||
function validateCamera(document, camera, errors, { validateValueSpec, pushError }) {
|
||||
const fail = (code, path, message) => pushError(errors, code, path, message);
|
||||
if (camera === undefined) return;
|
||||
if (!isPlainObject(camera)) return fail('ERR_SCHEMA_VALIDATION', '$.visuals.camera', 'camera must be an object.');
|
||||
for (const field of Object.keys(camera)) {
|
||||
if (!CAMERA_ALLOWED.has(field)) fail('ERR_UNKNOWN_FIELD', `$.visuals.camera.${field}`, `Unrecognized camera field '${field}'.`);
|
||||
}
|
||||
if (camera.projection !== undefined && !CAMERA_PROJECTIONS.includes(camera.projection)) {
|
||||
fail('ERR_SCHEMA_VALIDATION', '$.visuals.camera.projection', `Unsupported projection '${camera.projection}'.`);
|
||||
}
|
||||
for (const [field, spec] of Object.entries(CAMERA_FIELDS)) {
|
||||
const value = camera[field];
|
||||
if (value === undefined) continue;
|
||||
validateValueSpec(document, value, `$.visuals.camera.${field}`, errors);
|
||||
// 19.3 (V20): a *literal* outside the closed range is rejected at import;
|
||||
// a value that resolves outside it is clamped by the 8.1 safety stage.
|
||||
if (typeof value === 'number' && ((spec.min !== undefined && value < spec.min) || (spec.max !== undefined && value > spec.max))) {
|
||||
fail('ERR_OUT_OF_BOUNDS', `$.visuals.camera.${field}`, `camera.${field} must be between ${spec.min} and ${spec.max}.`);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
function validateEffects(document, effects, errors, { validateValueSpec, pushError }) {
|
||||
const fail = (code, path, message) => pushError(errors, code, path, message);
|
||||
if (effects === undefined) return [];
|
||||
if (!Array.isArray(effects)) {
|
||||
fail('ERR_SCHEMA_VALIDATION', '$.visuals.effects', 'effects must be an array.');
|
||||
return [];
|
||||
}
|
||||
if (effects.length > AUTHORING.postEffectEntries) fail('ERR_VISUAL_LIMIT_EXCEEDED', '$.visuals.effects', `At most ${AUTHORING.postEffectEntries} post-effect entries.`);
|
||||
effects.forEach((entry, index) => {
|
||||
const path = `$.visuals.effects[${index}]`;
|
||||
if (!isPlainObject(entry)) return fail('ERR_SCHEMA_VALIDATION', path, 'Effect entry must be an object.');
|
||||
const definition = POST_EFFECTS[entry.type];
|
||||
if (!definition) return fail('ERR_INVALID_EFFECT_TYPE', `${path}.type`, `Unsupported post-effect type '${entry.type}'.`);
|
||||
for (const field of Object.keys(entry)) {
|
||||
if (field === 'type' || field === 'enabled') continue;
|
||||
if (!Object.hasOwn(definition.numeric, field) && !Object.hasOwn(definition.colors, field)) {
|
||||
fail('ERR_UNKNOWN_FIELD', `${path}.${field}`, `Effect '${entry.type}' declares no parameter '${field}'.`);
|
||||
}
|
||||
}
|
||||
if (entry.enabled !== undefined) validateValueSpec(document, entry.enabled, `${path}.enabled`, errors);
|
||||
for (const [parameter, range] of Object.entries(definition.numeric)) {
|
||||
const value = entry[parameter];
|
||||
if (value === undefined) continue;
|
||||
validateValueSpec(document, value, `${path}.${parameter}`, errors);
|
||||
if (typeof value === 'number' && ((range.min !== undefined && value < range.min) || (range.max !== undefined && value > range.max))) {
|
||||
fail('ERR_OUT_OF_BOUNDS', `${path}.${parameter}`, `${parameter} must be between ${range.min} and ${range.max}.`);
|
||||
}
|
||||
}
|
||||
// 19.4: `color` parameters and `type` are authored once, never ValueSpecs.
|
||||
for (const parameter of Object.keys(definition.colors)) {
|
||||
if (entry[parameter] !== undefined && !isColor(entry[parameter])) fail('ERR_TYPE_MISMATCH', `${path}.${parameter}`, `${parameter} must be an authored color literal.`);
|
||||
}
|
||||
});
|
||||
return effects;
|
||||
}
|
||||
|
||||
function validateFields(document, fields, errors, { validateValueSpec, pushError }) {
|
||||
const fail = (code, path, message) => pushError(errors, code, path, message);
|
||||
if (fields === undefined) return new Set();
|
||||
if (!isPlainObject(fields)) {
|
||||
fail('ERR_SCHEMA_VALIDATION', '$.visuals.fields', 'fields must be an object.');
|
||||
return new Set();
|
||||
}
|
||||
const ids = Object.keys(fields);
|
||||
if (ids.length > AUTHORING.declaredFields) fail('ERR_VISUAL_LIMIT_EXCEEDED', '$.visuals.fields', `At most ${AUTHORING.declaredFields} declared fields.`);
|
||||
for (const [id, field] of Object.entries(fields)) {
|
||||
const path = `$.visuals.fields.${id}`;
|
||||
if (!ID_PATTERN.test(id)) fail('ERR_INVALID_ID', path, `Field ID '${id}' is invalid.`);
|
||||
if (!isPlainObject(field)) { fail('ERR_SCHEMA_VALIDATION', path, 'Field must be an object.'); continue; }
|
||||
if (!VISUAL_FIELD_TYPES.includes(field.type)) { fail('ERR_INVALID_FIELD_TYPE', `${path}.type`, `Unsupported field type '${field.type}'.`); continue; }
|
||||
const allowed = new Set([...FIELD_COMMON, ...FIELD_TYPE_FIELDS[field.type]]);
|
||||
for (const key of Object.keys(field)) if (!allowed.has(key)) fail('ERR_UNKNOWN_FIELD', `${path}.${key}`, `Field type '${field.type}' declares no '${key}'.`);
|
||||
if (field.enabled !== undefined) validateValueSpec(document, field.enabled, `${path}.enabled`, errors);
|
||||
if (field.type === 'noise') {
|
||||
const mode = field.mode ?? 'curl';
|
||||
if (!['curl', 'gradient', 'value'].includes(mode)) fail('ERR_SCHEMA_VALIDATION', `${path}.mode`, `Unsupported noise mode '${field.mode}'.`);
|
||||
// 18.7 (A2): `direction` is required under `value` and unknown otherwise.
|
||||
if (mode === 'value' && field.direction === undefined) fail('ERR_SCHEMA_VALIDATION', `${path}.direction`, "A 'value' noise field requires a direction.");
|
||||
if (mode !== 'value' && field.direction !== undefined) fail('ERR_UNKNOWN_FIELD', `${path}.direction`, `direction is not declared under noise mode '${mode}'.`);
|
||||
if (field.octaves !== undefined && (!Number.isInteger(field.octaves) || field.octaves < 1 || field.octaves > 4)) fail('ERR_OUT_OF_BOUNDS', `${path}.octaves`, 'octaves must be an integer from 1 to 4.');
|
||||
if (field.persistence !== undefined && (!Number.isFinite(field.persistence) || field.persistence < 0 || field.persistence > 1)) fail('ERR_OUT_OF_BOUNDS', `${path}.persistence`, 'persistence must be between 0 and 1.');
|
||||
if (field.scale !== undefined && (!Number.isFinite(field.scale) || field.scale <= 0)) fail('ERR_OUT_OF_BOUNDS', `${path}.scale`, 'scale must be above 0.');
|
||||
}
|
||||
}
|
||||
return new Set(ids);
|
||||
}
|
||||
|
||||
function validateSystems(document, systems, layers, fields, errors, { validateValueSpec, pushError }) {
|
||||
const fail = (code, path, message) => pushError(errors, code, path, message);
|
||||
if (systems === undefined) return {};
|
||||
if (!isPlainObject(systems)) {
|
||||
fail('ERR_SCHEMA_VALIDATION', '$.visuals.systems', 'systems must be an object.');
|
||||
return {};
|
||||
}
|
||||
const ids = Object.keys(systems);
|
||||
if (ids.length > AUTHORING.declaredSystems) fail('ERR_VISUAL_LIMIT_EXCEEDED', '$.visuals.systems', `At most ${AUTHORING.declaredSystems} declared visual systems.`);
|
||||
for (const [id, system] of Object.entries(systems)) {
|
||||
const path = `$.visuals.systems.${id}`;
|
||||
if (!ID_PATTERN.test(id)) fail('ERR_INVALID_ID', path, `System ID '${id}' is invalid.`);
|
||||
if (!isPlainObject(system)) { fail('ERR_SCHEMA_VALIDATION', path, 'System must be an object.'); continue; }
|
||||
if (!VISUAL_SYSTEM_TYPES.includes(system.type)) fail('ERR_INVALID_SYSTEM_TYPE', `${path}.type`, `Unsupported visual system type '${system.type}'.`);
|
||||
|
||||
// 17.7 (V17): the presence of the layer map decides whether `layer` is required.
|
||||
if (layers) {
|
||||
if (system.layer === undefined) fail('ERR_INVALID_REFERENCE', `${path}.layer`, 'A system must name a declared layer when visuals.layers is present.');
|
||||
else if (!layers.has(system.layer)) fail('ERR_INVALID_REFERENCE', `${path}.layer`, `Layer '${system.layer}' is not declared.`);
|
||||
} else if (system.layer !== undefined) {
|
||||
fail('ERR_INVALID_REFERENCE', `${path}.layer`, 'No layers are declared, so there is no layer to name.');
|
||||
}
|
||||
|
||||
if (system.visible !== undefined) validateValueSpec(document, system.visible, `${path}.visible`, errors);
|
||||
|
||||
const lifecycle = system.lifecycle ?? 'persistent';
|
||||
if (!LIFECYCLE_MODES.includes(lifecycle)) fail('ERR_SCHEMA_VALIDATION', `${path}.lifecycle`, `Unsupported lifecycle '${system.lifecycle}'.`);
|
||||
|
||||
// 17.7 (A1): the four spawn-only names never appear at a system's top
|
||||
// level; `lifetime` does, but only where the type's own table declares it
|
||||
// as the per-item duration.
|
||||
for (const field of Object.keys(system)) {
|
||||
if (SPAWN_ONLY_AT_TOP_LEVEL.has(field)) fail('ERR_UNKNOWN_FIELD', `${path}.${field}`, `'${field}' is a field of the spawn container, not of the system.`);
|
||||
}
|
||||
if (system.lifetime !== undefined && !TYPES_WITH_ITEM_LIFETIME.has(system.type)) {
|
||||
fail('ERR_UNKNOWN_FIELD', `${path}.lifetime`, `A '${system.type}' system declares no lifetime; a spawned instance's duration is spawn.lifetime.`);
|
||||
}
|
||||
validateSpawn(document, system, lifecycle, path, errors, { validateValueSpec, pushError });
|
||||
|
||||
if (system.automation !== undefined && !Array.isArray(system.automation)) fail('ERR_SCHEMA_VALIDATION', `${path}.automation`, 'automation must be an array.');
|
||||
if (Array.isArray(system.fields)) {
|
||||
if (system.fields.length > AUTHORING.referencedFieldsPerSystem) fail('ERR_VISUAL_LIMIT_EXCEEDED', `${path}.fields`, `A system may reference at most ${AUTHORING.referencedFieldsPerSystem} fields.`);
|
||||
system.fields.forEach((reference, index) => {
|
||||
if (!fields.has(reference)) fail('ERR_INVALID_REFERENCE', `${path}.fields[${index}]`, `Field '${reference}' is not declared.`);
|
||||
});
|
||||
}
|
||||
}
|
||||
return systems;
|
||||
}
|
||||
|
||||
function validateSpawn(document, system, lifecycle, path, errors, { validateValueSpec, pushError }) {
|
||||
const fail = (code, location, message) => pushError(errors, code, location, message);
|
||||
const spawn = system.spawn;
|
||||
if (spawn === undefined) return;
|
||||
if (lifecycle !== 'spawned') return fail('ERR_UNKNOWN_FIELD', `${path}.spawn`, 'A persistent system has no spawn container.');
|
||||
if (!isPlainObject(spawn)) return fail('ERR_SCHEMA_VALIDATION', `${path}.spawn`, 'spawn must be an object.');
|
||||
for (const field of Object.keys(spawn)) {
|
||||
if (!SPAWN_FIELDS.includes(field)) fail('ERR_UNKNOWN_FIELD', `${path}.spawn.${field}`, `Unrecognized spawn field '${field}'.`);
|
||||
}
|
||||
for (const field of ['lifetime', 'release']) {
|
||||
const value = spawn[field];
|
||||
if (value !== undefined && (typeof value !== 'string' || !DURATION_PATTERN.test(value))) fail('ERR_INVALID_DURATION', `${path}.spawn.${field}`, `spawn.${field} must be a duration literal.`);
|
||||
}
|
||||
if (spawn.ownership !== undefined && spawn.ownership !== 'persistent') fail('ERR_SCHEMA_VALIDATION', `${path}.spawn.ownership`, "spawn.ownership accepts only 'persistent'.");
|
||||
if (spawn.cancelWithScenario !== undefined) {
|
||||
if (typeof spawn.cancelWithScenario !== 'boolean') fail('ERR_TYPE_MISMATCH', `${path}.spawn.cancelWithScenario`, 'spawn.cancelWithScenario must be a boolean.');
|
||||
// 19.2 (V23): severing the originating-scenario relationship requires that
|
||||
// the instance's resources belong to the performance root.
|
||||
else if (spawn.cancelWithScenario === false && spawn.ownership !== 'persistent') fail('ERR_UNSUPPORTED_TARGET', `${path}.spawn.cancelWithScenario`, "cancelWithScenario: false requires ownership: 'persistent'.");
|
||||
}
|
||||
if (spawn.inputs !== undefined && !isPlainObject(spawn.inputs)) fail('ERR_SCHEMA_VALIDATION', `${path}.spawn.inputs`, 'spawn.inputs must be an object.');
|
||||
}
|
||||
|
||||
// ---------------------------------------------------------------------------
|
||||
// Visual automation (19.1)
|
||||
// ---------------------------------------------------------------------------
|
||||
|
||||
function validateAutomationArray(document, tracks, path, scope, errors, helpers) {
|
||||
const { validateValueSpec, pushError } = helpers;
|
||||
const fail = (code, location, message) => pushError(errors, code, location, message);
|
||||
if (tracks === undefined) return { tracks: 0, points: 0 };
|
||||
if (!Array.isArray(tracks)) {
|
||||
fail('ERR_SCHEMA_VALIDATION', path, 'automation must be an array.');
|
||||
return { tracks: 0, points: 0 };
|
||||
}
|
||||
let points = 0;
|
||||
const written = new Set();
|
||||
tracks.forEach((track, index) => {
|
||||
const location = `${path}[${index}]`;
|
||||
if (!isPlainObject(track)) return fail('ERR_SCHEMA_VALIDATION', location, 'Automation track must be an object.');
|
||||
for (const field of Object.keys(track)) if (!TRACK_FIELDS.has(field)) fail('ERR_UNKNOWN_FIELD', `${location}.${field}`, `Unrecognized automation field '${field}'.`);
|
||||
if (track.mode !== undefined && !AUTOMATION_MODES.includes(track.mode)) fail('ERR_SCHEMA_VALIDATION', `${location}.mode`, `Unsupported automation mode '${track.mode}'.`);
|
||||
if (track.interpolation !== undefined && !AUTOMATION_CURVES.includes(track.interpolation)) fail('ERR_SCHEMA_VALIDATION', `${location}.interpolation`, `Unsupported interpolation '${track.interpolation}'.`);
|
||||
|
||||
if (track.loop !== undefined) {
|
||||
const loop = track.loop;
|
||||
if (!isPlainObject(loop)) fail('ERR_SCHEMA_VALIDATION', `${location}.loop`, 'loop must be an object.');
|
||||
else {
|
||||
for (const field of Object.keys(loop)) if (field !== 'mode' && field !== 'count') fail('ERR_UNKNOWN_FIELD', `${location}.loop.${field}`, `Unrecognized loop field '${field}'.`);
|
||||
if (!LOOP_MODES.includes(loop.mode)) fail('ERR_SCHEMA_VALIDATION', `${location}.loop.mode`, `Unsupported loop mode '${loop.mode}'.`);
|
||||
// 19.1 (V12): `infinite` is legal in every scope, bounded by whatever
|
||||
// owns the track, so no scope check belongs here.
|
||||
if (loop.count !== undefined && loop.count !== 'infinite' && (!Number.isInteger(loop.count) || loop.count < 1)) {
|
||||
fail('ERR_OUT_OF_BOUNDS', `${location}.loop.count`, "loop.count must be 'infinite' or an integer of at least 1.");
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
if (!Array.isArray(track.points) || track.points.length < 2) fail('ERR_SCHEMA_VALIDATION', `${location}.points`, 'A track requires at least 2 points.');
|
||||
else {
|
||||
if (track.points.length > AUTHORING.automationPointsPerTrack) fail('ERR_VISUAL_LIMIT_EXCEEDED', `${location}.points`, `At most ${AUTHORING.automationPointsPerTrack} points per track.`);
|
||||
points += track.points.length;
|
||||
let previous = -Infinity;
|
||||
track.points.forEach((point, pointIndex) => {
|
||||
const pointPath = `${location}.points[${pointIndex}]`;
|
||||
if (!isPlainObject(point)) return fail('ERR_SCHEMA_VALIDATION', pointPath, 'Automation point must be an object.');
|
||||
for (const field of Object.keys(point)) if (field !== 'at' && field !== 'value') fail('ERR_UNKNOWN_FIELD', `${pointPath}.${field}`, `Unrecognized point field '${field}'.`);
|
||||
// 19.1: `at` is a duration literal only, never a procedural TimeSpec,
|
||||
// so the strictly-increasing rule stays decidable at import.
|
||||
if (typeof point.at !== 'string' || !DURATION_PATTERN.test(point.at)) fail('ERR_INVALID_DURATION', `${pointPath}.at`, 'Point at must be a duration literal.');
|
||||
else {
|
||||
const milliseconds = durationMilliseconds(point.at);
|
||||
if (milliseconds <= previous) fail('ERR_INVALID_RANGE_ORDER', `${pointPath}.at`, 'Automation point times must be strictly increasing.');
|
||||
previous = milliseconds;
|
||||
}
|
||||
if (!Object.hasOwn(point, 'value')) fail('ERR_SCHEMA_VALIDATION', `${pointPath}.value`, 'Automation point requires a value.');
|
||||
else validateValueSpec(document, point.value, `${pointPath}.value`, errors);
|
||||
});
|
||||
}
|
||||
|
||||
const resolution = resolveAutomationTarget(track.target, scope);
|
||||
if (resolution.code) fail(resolution.code, `${location}.target`, resolution.message);
|
||||
else if (written.has(resolution.key)) fail('ERR_AUTOMATION_CONFLICT', `${location}.target`, `More than one track controls '${track.target}'.`);
|
||||
else written.add(resolution.key);
|
||||
});
|
||||
return { tracks: tracks.length, points };
|
||||
}
|
||||
|
||||
function durationMilliseconds(value) {
|
||||
const [, scalar, unit] = DURATION_PATTERN.exec(value);
|
||||
return Number(scalar) * { ms: 1, s: 1000, m: 60_000, h: 3_600_000 }[unit];
|
||||
}
|
||||
|
||||
/**
|
||||
* 19.1: two declaration scopes, and a track in one naming a target in the other
|
||||
* is ERR_INVALID_REFERENCE. A target that exists but exposes no automation
|
||||
* stage — a repeater property, a boolean, a color — is ERR_UNSUPPORTED_TARGET.
|
||||
*/
|
||||
function resolveAutomationTarget(target, scope) {
|
||||
if (typeof target !== 'string' || target.length === 0) {
|
||||
return { code: 'ERR_SCHEMA_VALIDATION', message: 'A track requires a target.' };
|
||||
}
|
||||
const context = scope.context;
|
||||
const head = target.split('.')[0].replace(/\[\d+\]$/, '');
|
||||
|
||||
if (scope.scope === 'exhibit') {
|
||||
if (head === 'systems') return { code: 'ERR_INVALID_REFERENCE', message: 'Exhibit-scope automation never reaches into a system; declare the track on the system.' };
|
||||
if (head === 'scene') {
|
||||
if (!['scene.depthFog.near', 'scene.depthFog.far', 'scene.depthFog.density'].includes(target)) {
|
||||
return { code: 'ERR_UNSUPPORTED_TARGET', message: `Scene property '${target}' is not automatable.` };
|
||||
}
|
||||
return { key: target };
|
||||
}
|
||||
if (head === 'layers') {
|
||||
const parts = target.split('.');
|
||||
if (parts.length !== 3 || !context.layers?.has(parts[1])) return { code: 'ERR_INVALID_REFERENCE', message: `Layer '${parts[1]}' is not declared.` };
|
||||
if (parts[2] !== 'opacity' && parts[2] !== 'parallax') return { code: 'ERR_UNSUPPORTED_TARGET', message: `Layer property '${parts[2]}' is not automatable.` };
|
||||
return { key: target };
|
||||
}
|
||||
if (head === 'camera') {
|
||||
const parts = target.split('.');
|
||||
// 19.3: `projection` is authored once — not automatable, not bindable.
|
||||
if (parts.length !== 2 || !Object.hasOwn(CAMERA_FIELDS, parts[1])) return { code: 'ERR_UNSUPPORTED_TARGET', message: `Camera property '${target}' is not automatable.` };
|
||||
return { key: target };
|
||||
}
|
||||
if (head === 'effects') {
|
||||
const match = EFFECT_INDEX.exec(target);
|
||||
if (!match) return { code: 'ERR_UNSUPPORTED_TARGET', message: `Effect target '${target}' is not automatable.` };
|
||||
const entry = context.effects?.[Number(match[1])];
|
||||
if (!entry) return { code: 'ERR_INVALID_REFERENCE', message: `Effect index ${match[1]} is outside the authored chain.` };
|
||||
if (!Object.hasOwn(POST_EFFECTS[entry.type]?.numeric ?? {}, match[2])) return { code: 'ERR_UNSUPPORTED_TARGET', message: `Effect '${entry.type}' has no numeric parameter '${match[2]}'.` };
|
||||
return { key: target };
|
||||
}
|
||||
return { code: 'ERR_UNSUPPORTED_TARGET', message: `'${target}' is not in the automatable registry.` };
|
||||
}
|
||||
|
||||
// System scope. Targets are relative to the owning system.
|
||||
if (['scene', 'layers', 'camera', 'effects'].includes(head)) {
|
||||
return { code: 'ERR_INVALID_REFERENCE', message: 'System-scope automation never reaches exhibit-scope properties.' };
|
||||
}
|
||||
if (head === 'systems') return { code: 'ERR_INVALID_REFERENCE', message: 'No track may address another system.' };
|
||||
const type = scope.system?.type;
|
||||
if (type === 'graphic') return resolveGraphicTarget(target, scope.system);
|
||||
const automatable = SYSTEM_AUTOMATABLE[type];
|
||||
if (!automatable) return { code: 'ERR_UNSUPPORTED_TARGET', message: `A '${type}' system exposes no automatable property.` };
|
||||
// 19.1 (V11): a repeater has no automatable property at all, `step` included.
|
||||
if (!automatable.has(target)) return { code: 'ERR_UNSUPPORTED_TARGET', message: `'${target}' is not automatable on a '${type}' system.` };
|
||||
return { key: `${scope.systemId}.${target}` };
|
||||
}
|
||||
|
||||
function resolveGraphicTarget(target, system) {
|
||||
const parts = target.split('.');
|
||||
let container = system?.content;
|
||||
let index = 0;
|
||||
while (index < parts.length) {
|
||||
if (!isPlainObject(container) || !Object.hasOwn(container, parts[index])) {
|
||||
return { code: 'ERR_INVALID_REFERENCE', message: `'${target}' does not name an object in this system's content.` };
|
||||
}
|
||||
const object = container[parts[index]];
|
||||
index += 1;
|
||||
const remainder = parts.slice(index).join('.');
|
||||
if (remainder.length === 0) return { code: 'ERR_UNSUPPORTED_TARGET', message: `'${target}' names an object, not a numeric property of one.` };
|
||||
if (GRAPHIC_NUMERIC_PROPERTIES.has(remainder) || POINT_PROPERTY.test(remainder)) return { key: target };
|
||||
// Not a property tail, so the next segment must be a container key.
|
||||
if (isPlainObject(object) && (object.type === 'group' || object.type === 'component') && isPlainObject(object.children)) {
|
||||
container = object.children;
|
||||
continue;
|
||||
}
|
||||
return { code: 'ERR_UNSUPPORTED_TARGET', message: `'${remainder}' is not a numeric object property.` };
|
||||
}
|
||||
return { code: 'ERR_INVALID_REFERENCE', message: `'${target}' does not name an object in this system's content.` };
|
||||
}
|
||||
Reference in New Issue
Block a user