{ "$schema": "https://ui.shadcn.com/schema/registry-item.json", "name": "construct-ring", "title": "Construct ring", "description": "A signet emitter ring that lights, comes apart, and forges a drawn stroke into a construct of solid light.", "registryDependencies": [ "https://robocn.dev/r/robot-style.json", "https://robocn.dev/r/robot-kinematics.json", "https://robocn.dev/r/use-robot-motion.json", "https://robocn.dev/r/construct-geometry.json", "https://robocn.dev/r/assembly-geometry.json" ], "files": [ { "path": "src/components/ui/construct-ring.tsx", "content": "\"use client\"\n\n/**\n * construct-ring — a signet emitter ring that lights, comes apart, and forges\n * what the reader draws into a construct of solid light.\n *\n * The form is the heavy signet archetype: a broad knurled band with flared\n * shoulders, a collar, a bezel plate flanked by two crystal inlays, and a domed\n * lens whose face carries an abstract iris — a bore, four radial inlays and a\n * spiral gauge. The face points up the hand rather than at the reader, which is\n * why the iso camera is the one it is drawn for: from there you get the band\n * and the face at once.\n *\n * The axis nothing else in the set has is the **input**. Every other\n * interactive machine maps a pointer to one scalar; this one takes the shape of\n * the gesture. A stroke is resampled by arc length, measured into a frame\n * (centroid, principal axis, spans, closure, area, circularity, corners) and\n * classified into an archetype, which is then fitted to that frame and filled\n * by a real scanline clip. All of that is `src/lib/robocn/construct.ts` — pure,\n * no React, tested on its own.\n *\n * Solved: the stroke frame, the classifier, the outline fit, the lattice, the\n * draw a construct costs, and the explode schedule. Illustrated: the archetype\n * outlines themselves — a glove is a glove because it is drawn as one — the\n * glow, the emission column, the knurl and the crystal. There is no physics on\n * a construct: nothing swings, nothing collides, nothing has mass.\n *\n * The ring is modelled once in world units — x starboard, y up, z along the\n * finger — and pushed through `robotCamera`, so all four views are the same\n * geometry. A construct is **not** projected: it is light thrown at the reader\n * and lives in the picture plane, because the stroke that made it was drawn\n * there.\n *\n * Design note: docs/construct-ring.md.\n */\n\nimport * as React from \"react\"\n\nimport { arrowStep, useReducedMotion, useRobotDrag, useRobotScalar } from \"@/hooks/use-robot-motion\"\nimport { clamp, lerp, type Vec2 } from \"@/lib/robocn/kinematics\"\nimport { explodeAssembly, type AssemblyPart } from \"@/lib/robocn/assembly\"\nimport {\n classifyStroke,\n constructArchetypes,\n constructCost,\n constructDetail,\n constructLattice,\n constructOutline,\n constructSettle,\n neutralFrame,\n strokeFrame,\n type ConstructArchetype,\n type StrokeFrame,\n} from \"@/lib/robocn/construct\"\nimport {\n boxCorners,\n elevationDraft,\n fitFrame,\n px,\n resolveRobotPalette,\n resolveRobotSize,\n robotCamera,\n robotCameraAt,\n robotSurface,\n robotViews,\n type RobotPaletteProps,\n type RobotSize,\n type RobotVariant,\n type RobotView,\n} from \"@/lib/robocn/style\"\nimport { cn } from \"@/lib/utils\"\n\n/** What the ring does with nobody driving it. Always includes `static`. */\nexport type ConstructRingBehavior = \"conjure\" | \"charge\" | \"flare\" | \"idle\" | \"static\"\n\nexport type { ConstructArchetype }\n\n/** What a forged stroke reports back to the caller. */\nexport interface ConstructReport {\n archetype: ConstructArchetype\n /** What holding it draws from the reserve, 0 to 1. */\n cost: number\n frame: StrokeFrame\n}\n\nconst VIEW_WIDTH = 260\nconst VIEW_HEIGHT = 260\nconst NATIVE_VIEW: RobotView = \"iso\"\n\n/** The band of the viewBox the ring itself is fitted into, at the bottom. */\nconst RING_BAND = 150\nconst RING_TOP = VIEW_HEIGHT - RING_BAND\n\n/** Where a construct sits when nobody drew one, in viewBox units. */\nconst FIELD_CENTER: Vec2 = { x: VIEW_WIDTH / 2, y: 58 }\nconst FIELD_SPAN = 86\n\n/* World units: x starboard, y up from the bench, z along the finger. */\nconst BAND_CENTER: Vec2 = { x: 0, y: 34 }\nconst BAND_OUTER = 34\nconst BAND_BORE = 23\nconst BAND_HALF = 11\nconst BAND_TOP = BAND_CENTER.y + BAND_OUTER\nconst SHOULDER_HALF = 11\nconst COLLAR_BOTTOM = BAND_TOP - 4\nconst COLLAR_TOP = BAND_TOP + 3\nconst BEZEL_BOTTOM = COLLAR_TOP\nconst BEZEL_TOP = BEZEL_BOTTOM + 10\nconst BEZEL_HALF_WIDTH = 19\nconst BEZEL_HALF_DEPTH = 12\nconst INLAY_HALF_DEPTH = 6.5\nconst LENS_BASE = BEZEL_TOP\nconst LENS_RISE = 8\nconst LENS_R = 15\n/** The face the iris is drawn on, as a world height. */\nconst LENS_FACE = LENS_BASE + LENS_RISE * 0.7\n\nconst ENVELOPE = boxCorners({ x: -48, y: 0, z: -26 }, { x: 48, y: 96, z: 26 })\n\n/** How long a conjured construct lives, in clock units. */\nconst CONSTRUCT_LIFE = 1.6\n/** How long a drawn construct takes to materialise, in clock units. */\nconst FORGE_RISE = 0.22\n/** Samples of a pointer path closer than this are the same sample. */\nconst STROKE_STEP = 2.4\n\n/** An arc of the band, from `from` to `to` degrees, at one radius. */\nconst shankArc = (from: number, to: number, radius: number, steps = 10): Vec2[] =>\n Array.from({ length: steps }, (_, index) => {\n const t = ((from + ((to - from) * index) / (steps - 1)) * Math.PI) / 180\n return {\n x: BAND_CENTER.x + Math.cos(t) * radius,\n y: BAND_CENTER.y + Math.sin(t) * radius,\n }\n })\n\n/** A circle in the band's own plane, for the ring's near face. */\nconst ringFace = (radius: number, steps = 30): Vec2[] =>\n Array.from({ length: steps }, (_, index) => {\n const t = (index / steps) * Math.PI * 2\n return {\n x: BAND_CENTER.x + Math.cos(t) * radius,\n y: BAND_CENTER.y + Math.sin(t) * radius,\n }\n })\n\nconst viewNames: Record = {\n plan: \"plan view\",\n front: \"front elevation\",\n profile: \"side elevation\",\n iso: \"isometric view\",\n}\n\n/** The teardown, in the order the ring was put together. */\nconst RING_PARTS: AssemblyPart[] = [\n { id: \"band\", axis: { x: 0, y: -1, z: 0 }, travel: 0, order: 0 },\n { id: \"shank-port\", axis: { x: -1, y: 0.2, z: 0 }, travel: 16, order: 1 },\n { id: \"shank-starboard\", axis: { x: 1, y: 0.2, z: 0 }, travel: 16, order: 1 },\n { id: \"collar\", axis: { x: 0, y: 1, z: 0 }, travel: 14, order: 2 },\n { id: \"bezel\", axis: { x: 0, y: 1, z: 0 }, travel: 24, order: 3 },\n { id: \"inlay-port\", axis: { x: -1, y: 0.35, z: 0 }, travel: 26, order: 4 },\n { id: \"inlay-starboard\", axis: { x: 1, y: 0.35, z: 0 }, travel: 26, order: 4 },\n { id: \"lens\", axis: { x: 0, y: 1, z: 0 }, travel: 40, order: 5 },\n]\n\n/* -------------------------------------------------------------------------- */\n/* the behaviours — pure functions of the clock */\n/* -------------------------------------------------------------------------- */\n\n/** The reserve the ring holds at `clock` with nobody driving it, 0 to 1. */\nexport function constructRingReserve(\n behavior: ConstructRingBehavior,\n clock: number,\n): number {\n if (!Number.isFinite(clock)) return 0.7\n const t = ((clock % 1) + 1) % 1\n switch (behavior) {\n case \"charge\":\n return clamp(0.18 + t * 0.82, 0, 1)\n case \"flare\":\n return clamp(0.72 + Math.sin(clock * Math.PI * 2) * 0.24, 0, 1)\n case \"idle\":\n return clamp(0.56 + Math.sin(clock * Math.PI * 2) * 0.07, 0, 1)\n case \"conjure\":\n return clamp(0.94 - t * 0.18, 0, 1)\n default:\n return 0.7\n }\n}\n\n/**\n * The construct the ring is holding at `clock`: which archetype, and how solid\n * it is. `charge` and `idle` forge nothing, so they report a null archetype.\n */\nexport function constructRingConjuring(\n behavior: ConstructRingBehavior,\n clock: number,\n): { archetype: ConstructArchetype | null; settle: number; index: number } {\n if (behavior === \"charge\" || behavior === \"idle\") {\n return { archetype: null, settle: 0, index: 0 }\n }\n const time = Number.isFinite(clock) ? clock : 0\n if (behavior === \"static\") {\n return { archetype: \"bubble\", settle: 1, index: 0 }\n }\n if (behavior === \"flare\") {\n return { archetype: \"glove\", settle: 1, index: 3 }\n }\n const step = Math.floor(time / CONSTRUCT_LIFE)\n const index = ((step % constructArchetypes.length) + constructArchetypes.length) %\n constructArchetypes.length\n const age = time - step * CONSTRUCT_LIFE\n return { archetype: constructArchetypes[index], settle: constructSettle(age, CONSTRUCT_LIFE), index }\n}\n\n/**\n * Where a conjured construct stands, when no stroke drew one. Deterministic in\n * the archetype's own index, so the same clock always draws the same picture.\n */\nexport function conjuredFrame(index: number): StrokeFrame {\n const i = Number.isFinite(index) ? index : 0\n const along = FIELD_SPAN + (i % 3) * 13\n const across = along / (1.08 + (i % 4) * 0.2)\n return {\n ...neutralFrame(along),\n center: { x: FIELD_CENTER.x + Math.sin(i * 2.1) * 16, y: FIELD_CENTER.y + Math.cos(i * 1.7) * 9 },\n angle: ((i * 43) % 90) - 45,\n along,\n across,\n aspect: along / across,\n }\n}\n\n/** An angle wrapped into (-180, 180]. */\nconst wrap180 = (degrees: number) => {\n const value = Number.isFinite(degrees) ? degrees : 0\n const wrapped = ((((value + 180) % 360) + 360) % 360) - 180\n return wrapped === -180 ? 180 : wrapped\n}\n\n/**\n * Any pair of angles, put back on the sphere. Azimuth wraps, and an elevation\n * dragged past the pole carries on *over* it — the camera comes down the far\n * side, which is azimuth turned half a turn and the elevation mirrored, rather\n * than stopping dead at the top. The camera has no roll axis, so it arrives\n * upright rather than upside down; nothing else about the machine cares.\n */\nexport function normalizeOrbit(azimuth: number, elevation: number) {\n let tilt = wrap180(elevation)\n let turn = Number.isFinite(azimuth) ? azimuth : 0\n if (tilt > 90) {\n tilt = 180 - tilt\n turn += 180\n } else if (tilt < -90) {\n tilt = -180 - tilt\n turn += 180\n }\n return { azimuth: wrap180(turn), elevation: tilt }\n}\n\n/** Degrees of turn per view unit of pointer travel. */\nconst ORBIT_RATE = 1.6\n\n/* -------------------------------------------------------------------------- */\n/* the component */\n/* -------------------------------------------------------------------------- */\n\nexport interface ConstructRingProps\n extends Omit, \"color\" | \"onSelect\">,\n RobotPaletteProps {\n /** Controlled reserve, 0 spent to 1 charged. Supplying it stops the loop. */\n reserve?: number\n onReserveChange?: (reserve: number) => void\n /** Controlled construct. `null` holds none; supplying it stops the cycle. */\n construct?: ConstructArchetype | null\n /** Fires whenever a stroke is forged into a construct. */\n onConstructChange?: (report: ConstructReport) => void\n behavior?: ConstructRingBehavior\n /** Take the ring apart, 0 seated to 1 clear. */\n exploded?: number\n /** Let the reader draw constructs with a pointer, a finger, or Enter. */\n drawable?: boolean\n /** The field the constructs are forged in: a frame and its corner ticks. */\n showField?: boolean\n showGround?: boolean\n /** Where the camera stands. Defaults to the view the ring was drawn in. */\n view?: RobotView\n /**\n * Controlled camera, in degrees. Supplying either one turns the ring to that\n * angle and `view` only names the drawing plane. Azimuth wraps at 360;\n * elevation carries over the pole rather than stopping at it.\n */\n azimuth?: number\n elevation?: number\n onOrbitChange?: (orbit: { azimuth: number; elevation: number }) => void\n /** Turn the ring with a drag, a finger, or the arrow keys. */\n rotatable?: boolean\n speed?: number\n phase?: number\n paused?: boolean\n animate?: boolean\n /** Makes the ring a slider over its own reserve. */\n interactive?: boolean\n label?: string\n size?: RobotSize | number\n variant?: RobotVariant\n}\n\nfunction ConstructRing({\n reserve,\n onReserveChange,\n construct,\n onConstructChange,\n behavior = \"conjure\",\n exploded = 0,\n drawable = false,\n showField = true,\n showGround = true,\n view = NATIVE_VIEW,\n azimuth,\n elevation,\n onOrbitChange,\n rotatable = true,\n speed = 0.5,\n phase = 0,\n paused = false,\n animate = true,\n interactive = false,\n label,\n size = \"md\",\n variant = \"solid\",\n color,\n accent,\n metal,\n dark,\n glow,\n grid,\n palette: paletteOverride,\n className,\n style,\n role,\n tabIndex,\n onKeyDown,\n onBlur,\n \"aria-label\": ariaLabel,\n ...props\n}: ConstructRingProps) {\n const palette = resolveRobotPalette({ color, accent, metal, dark, glow, grid, palette: paletteOverride })\n const width = resolveRobotSize(size)\n const svgRef = React.useRef(null)\n const [held, setHeld] = React.useState(null)\n const [stroke, setStroke] = React.useState(null)\n const [drawn, setDrawn] = React.useState<\n { archetype: ConstructArchetype; frame: StrokeFrame; born: number } | null\n >(null)\n const [keyed, setKeyed] = React.useState(0)\n const [turned, setTurned] = React.useState<{ azimuth: number; elevation: number } | null>(null)\n\n const controlled = reserve !== undefined\n const hold = controlled ? (Number.isFinite(reserve) ? clamp(reserve as number, 0, 1) : 0) : held\n\n // Reduced motion parks the loop, so it counts as \"not running\": a parked\n // clock would otherwise leave the construct at the start of its rise, which\n // is nothing at all.\n const reduced = useReducedMotion()\n const running = animate && !reduced && !controlled && behavior !== \"static\"\n const goal = React.useCallback(\n (clock: number) => constructRingReserve(behavior, clock),\n [behavior],\n )\n const motion = useRobotScalar(goal, {\n rate: 0.9,\n hold,\n speed,\n paused,\n phase,\n animate: running,\n })\n const clock = Number.isFinite(motion.clock) ? motion.clock : 0\n // The clock a stroke was forged at, read in a handler rather than in render.\n const clockRef = React.useRef(clock)\n React.useEffect(() => {\n clockRef.current = clock\n }, [clock])\n\n /* Which construct is on: a drawn one wins over a controlled one, which wins\n over the behaviour's own cycle. */\n const conjured = constructRingConjuring(behavior, clock)\n const pinned = construct !== undefined\n let archetype: ConstructArchetype | null = null\n let frame: StrokeFrame = conjuredFrame(conjured.index)\n let settle = 0\n if (drawn) {\n archetype = drawn.archetype\n frame = drawn.frame\n settle = running ? clamp((clock - drawn.born) / FORGE_RISE, 0, 1) : 1\n } else if (pinned) {\n archetype = construct\n frame = conjuredFrame(constructArchetypes.indexOf(construct as ConstructArchetype))\n settle = 1\n } else {\n archetype = conjured.archetype\n settle = running ? conjured.settle : conjured.archetype ? 1 : 0\n }\n if (archetype && !constructArchetypes.includes(archetype)) archetype = \"bubble\"\n\n const outline = archetype ? constructOutline(archetype, frame) : []\n const lattice = archetype\n ? constructLattice(outline, { spacing: Math.max(5, frame.along / 9), angle: frame.angle + 34 })\n : []\n const seams = archetype ? constructDetail(archetype, frame) : []\n const cost = archetype ? constructCost(outline) : 0\n\n // Charge spent is charge gone: the gauge reads the construct it is holding.\n const base = clamp(motion.value, 0, 1)\n const level = clamp(base - cost * settle * 0.55, 0, 1)\n\n /* The camera. A controlled angle wins; then whatever the reader dragged it\n to; then the named view, so a ring nobody has touched is byte-identical to\n the one before it could be turned. */\n const native = robotViews[view] ?? robotViews[NATIVE_VIEW]\n const commanded =\n azimuth !== undefined || elevation !== undefined\n ? normalizeOrbit(azimuth ?? native.azimuth, elevation ?? native.elevation)\n : null\n const orbit = commanded ?? turned\n const camera = orbit ? robotCameraAt(orbit.azimuth, orbit.elevation, view) : robotCamera(view)\n const fit = fitFrame(ENVELOPE, camera, VIEW_WIDTH, RING_BAND)\n const draft = elevationDraft(camera, \"front\")\n const { path: line, solid, box, bar, disc } = draft\n\n /** A world point on the ring, in viewBox units — where the emission starts. */\n const toViewBox = (point: Vec2) => {\n const screen = fit.toViewBox(draft.point(point))\n return { x: screen.x, y: screen.y + RING_TOP }\n }\n\n /* The teardown. A world offset projects to a pure screen offset, so one\n schedule serves all four cameras. */\n const teardown = clamp(Number.isFinite(exploded) ? exploded : 0, 0, 1)\n const parts = explodeAssembly(RING_PARTS, teardown, { overlap: 0.5 })\n const offsets = Object.fromEntries(parts.map((part) => [part.id, part.offset])) as Record<\n string,\n { x: number; y: number; z: number }\n >\n const at = (id: string, point: Vec2): Vec2 => {\n const offset = offsets[id] ?? { x: 0, y: 0, z: 0 }\n return { x: point.x + offset.x, y: point.y + offset.y }\n }\n const lift = (id: string) => offsets[id]?.y ?? 0\n const slide = (id: string) => offsets[id]?.x ?? 0\n\n const apply = React.useCallback(\n (next: number) => {\n const bounded = Math.round(clamp(next, 0, 1) * 100) / 100\n setHeld(bounded)\n onReserveChange?.(bounded)\n },\n [onReserveChange],\n )\n\n /**\n * Turn the camera to an angle, wrapped onto the sphere. The gesture keeps its\n * own running angles in `rawRef`, because a drag can deliver several moves\n * inside one task and a turn computed from the last *rendered* angle would\n * throw most of them away.\n */\n const turn = React.useCallback(\n (nextAzimuth: number, nextElevation: number) => {\n const next = normalizeOrbit(nextAzimuth, nextElevation)\n setTurned(next)\n onOrbitChange?.(next)\n },\n [onOrbitChange],\n )\n\n // The plain slider path, for a ring that is not a sketch surface.\n const sliding = useRobotDrag(svgRef, {\n enabled: interactive && !drawable && !rotatable,\n onDrag: React.useCallback((unit: Vec2) => apply(1 - unit.y), [apply]),\n onDragEnd: React.useCallback(() => setHeld(null), []),\n })\n\n /* Drawing. The same gesture as the slider, told apart by where it starts:\n inside the ring adjusts the reserve, outside it forges. */\n const mode = React.useRef<\"draw\" | \"reserve\" | \"orbit\" | null>(null)\n /** Where the orbiting pointer was last frame, in viewBox units. */\n const lastPoint = React.useRef(null)\n /**\n * The angles the gesture is working from, ahead of the next render and\n * *before* they are put back on the sphere. Keeping them raw is what lets a\n * drag carry on over the pole: once past 90 the wrapped elevation comes back\n * down, so a gesture that read the wrapped value would bounce off the top.\n */\n const rawRef = React.useRef<{ azimuth: number; elevation: number } | null>(null)\n /* The stroke lives in a ref as well as in state: several pointer events can\n land in one task, and React would batch the renders away. The ref is what\n the gesture reads; the state is what the drawing reads. */\n const strokeRef = React.useRef([])\n const toView = React.useCallback((event: React.PointerEvent): Vec2 => {\n const rect = svgRef.current?.getBoundingClientRect()\n if (!rect || rect.width < 1 || rect.height < 1) return { x: 0, y: 0 }\n return {\n x: ((event.clientX - rect.left) / rect.width) * VIEW_WIDTH,\n y: ((event.clientY - rect.top) / rect.height) * VIEW_HEIGHT,\n }\n }, [])\n\n const forge = React.useCallback(\n (points: Vec2[]) => {\n const measured = strokeFrame(points)\n const verdict = classifyStroke(measured)\n setDrawn({ archetype: verdict.archetype, frame: measured, born: clockRef.current })\n onConstructChange?.({\n archetype: verdict.archetype,\n cost: constructCost(constructOutline(verdict.archetype, measured)),\n frame: measured,\n })\n },\n [onConstructChange],\n )\n\n const onPointerDown = (event: React.PointerEvent) => {\n if (!drawable && !rotatable) return\n const point = toView(event)\n /* One gesture, three jobs, told apart by where it starts and what is on:\n in the field with `drawable` it forges; anywhere with `rotatable` it\n turns the ring; and failing both, on the ring it scrubs the reserve. */\n if (drawable && point.y <= RING_TOP) {\n mode.current = \"draw\"\n strokeRef.current = [point]\n setStroke(strokeRef.current)\n } else if (rotatable) {\n mode.current = \"orbit\"\n lastPoint.current = point\n rawRef.current = orbit ?? { ...native }\n } else if (interactive) {\n mode.current = \"reserve\"\n apply(clamp(1 - (point.y - RING_TOP) / RING_BAND, 0, 1))\n } else {\n return\n }\n // Capture is a convenience: a pointer id the browser does not know about\n // (a synthetic event, a test) must not take the gesture down with it.\n try {\n event.currentTarget.setPointerCapture?.(event.pointerId)\n } catch {\n /* no capture; the gesture still tracks on the element */\n }\n }\n\n const onPointerMove = (event: React.PointerEvent) => {\n if (!mode.current) return\n const point = toView(event)\n if (mode.current === \"reserve\") {\n apply(clamp(1 - (point.y - RING_TOP) / RING_BAND, 0, 1))\n return\n }\n if (mode.current === \"orbit\") {\n // Turn by how far the pointer moved, not by where it is: a drag can go\n // round and round without ever running out of canvas.\n const from = lastPoint.current ?? point\n const here = rawRef.current ?? orbit ?? native\n const next = {\n azimuth: here.azimuth + (point.x - from.x) * ORBIT_RATE,\n elevation: here.elevation - (point.y - from.y) * ORBIT_RATE,\n }\n lastPoint.current = point\n rawRef.current = next\n turn(next.azimuth, next.elevation)\n return\n }\n const last = strokeRef.current.at(-1)\n if (last && Math.hypot(point.x - last.x, point.y - last.y) < STROKE_STEP) return\n strokeRef.current = [...strokeRef.current, point]\n setStroke(strokeRef.current)\n }\n\n const endStroke = (event: React.PointerEvent) => {\n if (!mode.current) return\n try {\n event.currentTarget.releasePointerCapture?.(event.pointerId)\n } catch {\n /* it was never captured */\n }\n const path = strokeRef.current\n lastPoint.current = null\n if (mode.current === \"orbit\") {\n rawRef.current = null\n } else if (mode.current === \"reserve\") setHeld(null)\n else if (path.length > 1) forge(path)\n else if (path.length === 1) {\n // A tap is a gesture too: forge something small where it landed.\n forge([path[0], { x: path[0].x + 26, y: path[0].y + 18 }])\n }\n mode.current = null\n strokeRef.current = []\n setStroke(null)\n }\n\n const shell = robotSurface(\"shell\", variant, palette)\n const machined = robotSurface(\"metal\", variant, palette)\n const cast = robotSurface(\"dark\", variant, palette)\n const lit = variant === \"outline\" || variant === \"wire\"\n\n const percent = Math.round(level * 100)\n const source = toViewBox({ x: 0, y: LENS_FACE + lift(\"lens\") })\n const bloom = 0.35 + level * 0.65\n\n /* The construct, materialising about its own centre. */\n const swell = lerp(0.84, 1, settle)\n const constructTransform = `translate(${px(frame.center.x)} ${px(frame.center.y)}) scale(${px(swell)}) translate(${px(-frame.center.x)} ${px(-frame.center.y)})`\n const outlinePath = outline.length\n ? `${outline.map((p, i) => `${i ? \"L\" : \"M\"} ${px(p.x)} ${px(p.y)}`).join(\" \")} Z`\n : \"\"\n\n /** The emission column, from the lens face to the construct it is holding. */\n const beam = (() => {\n if (!archetype || settle <= 0.02) return null\n const target = frame.center\n const dx = target.x - source.x\n const dy = target.y - source.y\n const span = Math.hypot(dx, dy)\n if (!(span > 1)) return null\n const nx = -dy / span\n const ny = dx / span\n const root = 3.5\n const mouth = Math.max(8, frame.across * 0.34) * settle\n return `M ${px(source.x + nx * root)} ${px(source.y + ny * root)} L ${px(target.x + nx * mouth)} ${px(target.y + ny * mouth)} L ${px(target.x - nx * mouth)} ${px(target.y - ny * mouth)} L ${px(source.x - nx * root)} ${px(source.y - ny * root)} Z`\n })()\n\n /** The iris on the lens face: bore, four radial inlays, and the gauge arc. */\n const gauge = (() => {\n const sweep = clamp(level, 0, 1) * 300\n const start = -240\n const end = start + sweep\n const r = 11.5\n const point = (degrees: number) => ({\n x: Math.cos((degrees * Math.PI) / 180) * r,\n y: Math.sin((degrees * Math.PI) / 180) * r,\n })\n const a = point(start)\n const b = point(end)\n if (sweep < 1) return \"\"\n return `M ${px(a.x)} ${px(a.y)} A ${r} ${r} 0 ${sweep > 180 ? 1 : 0} 1 ${px(b.x)} ${px(b.y)}`\n })()\n\n const lensDome = Array.from({ length: 15 }, (_, index) => {\n const t = (index / 14) * Math.PI\n return { x: Math.cos(Math.PI - t) * LENS_R, y: LENS_BASE + Math.sin(t) * LENS_RISE }\n })\n\n return (\n 0.01 ? `, ${Math.round(teardown * 100)} percent apart` : \"\"}, ${\n orbit\n ? `turned to ${px(orbit.azimuth)} degrees round and ${px(orbit.elevation)} degrees up`\n : (viewNames[view] ?? viewNames.iso)\n }`\n }\n /* Turning is the axis a person reaches for first, so when the ring can be\n turned that is the value the slider reports; the reserve stays a prop. */\n aria-valuemin={rotatable ? -180 : interactive ? 0 : undefined}\n aria-valuemax={rotatable ? 180 : interactive ? 1 : undefined}\n aria-valuenow={\n rotatable ? px(orbit?.azimuth ?? native.azimuth) : interactive ? px(level) : undefined\n }\n aria-valuetext={\n rotatable\n ? `${px(orbit?.azimuth ?? native.azimuth)} degrees round, ${px(\n orbit?.elevation ?? native.elevation,\n )} degrees up`\n : interactive\n ? `${percent} percent reserve`\n : undefined\n }\n tabIndex={tabIndex ?? (interactive || drawable || rotatable ? 0 : undefined)}\n onKeyDown={(event) => {\n onKeyDown?.(event)\n if (event.defaultPrevented) return\n // Enter forges the next archetype, so the feature has a keyboard path.\n if (drawable && (event.key === \"Enter\" || event.key === \" \")) {\n const next = (keyed + 1) % constructArchetypes.length\n setKeyed(next)\n const chosen = constructArchetypes[next]\n setDrawn({ archetype: chosen, frame: conjuredFrame(next), born: clockRef.current })\n onConstructChange?.({\n archetype: chosen,\n cost: constructCost(constructOutline(chosen, conjuredFrame(next))),\n frame: conjuredFrame(next),\n })\n event.preventDefault()\n return\n }\n if (drawable && (event.key === \"Escape\" || event.key === \"Backspace\")) {\n setDrawn(null)\n event.preventDefault()\n return\n }\n if (rotatable) {\n // Arrows walk the camera round and over the ring; Home puts it back\n // on the named view.\n const step = event.shiftKey ? 45 : 15\n const here = orbit ?? native\n if (event.key === \"ArrowLeft\") turn(here.azimuth - step, here.elevation)\n else if (event.key === \"ArrowRight\") turn(here.azimuth + step, here.elevation)\n else if (event.key === \"ArrowUp\") turn(here.azimuth, here.elevation + step * 0.7)\n else if (event.key === \"ArrowDown\") turn(here.azimuth, here.elevation - step * 0.7)\n else if (event.key === \"Home\") {\n rawRef.current = null\n setTurned(null)\n onOrbitChange?.({ ...native })\n } else return\n event.preventDefault()\n return\n }\n if (!interactive) return\n const delta = arrowStep(event.key, 0.05, 0.2)\n if (delta !== 0) apply(level + delta)\n else if (event.key === \"Home\") apply(0)\n else if (event.key === \"End\") apply(1)\n else return\n event.preventDefault()\n }}\n onPointerDown={onPointerDown}\n onPointerMove={onPointerMove}\n onPointerUp={endStroke}\n onPointerCancel={endStroke}\n viewBox={`0 0 ${VIEW_WIDTH} ${VIEW_HEIGHT}`}\n width={width}\n height={px((width * VIEW_HEIGHT) / VIEW_WIDTH)}\n onBlur={(event) => {\n onBlur?.(event)\n if (!sliding && mode.current === null) setHeld(null)\n }}\n className={cn(\n \"max-w-full select-none\",\n (interactive || drawable || rotatable) &&\n \"touch-none focus-visible:outline-2 focus-visible:outline-offset-4 focus-visible:outline-[currentColor]\",\n (rotatable || (interactive && !drawable)) && \"cursor-grab\",\n sliding && \"cursor-grabbing\",\n drawable && \"cursor-crosshair\",\n className,\n )}\n style={{ color: palette.foreground, ...style }}\n {...props}\n >\n {/* The field the constructs are forged in. */}\n {showField && (\n \n \n {[\n [10, 10],\n [VIEW_WIDTH - 10, 10],\n [10, RING_TOP - 12],\n [VIEW_WIDTH - 10, RING_TOP - 12],\n ].map(([x, y]) => (\n \n ))}\n \n )}\n\n {/* The emission column, from the lens to whatever it is holding. */}\n {beam && (\n \n )}\n\n {/* The construct itself: picture-plane light, not a projected solid. */}\n {archetype && settle > 0.01 && outlinePath && (\n \n \n \n {lattice.map(([a, b], index) => (\n \n ))}\n \n \n {seams.map((seam, index) => (\n `${i ? \"L\" : \"M\"} ${px(p.x)} ${px(p.y)}`).join(\" \")}\n fill=\"none\"\n stroke={palette.accent}\n strokeWidth={1.4}\n strokeLinecap=\"round\"\n strokeLinejoin=\"round\"\n />\n ))}\n \n \n \n \n )}\n\n {/* The stroke under the pointer, before it is forged. */}\n {stroke && stroke.length > 1 && (\n `${i ? \"L\" : \"M\"} ${px(p.x)} ${px(p.y)}`).join(\" \")}\n fill=\"none\"\n stroke={palette.accent}\n strokeWidth={2}\n strokeDasharray=\"5 4\"\n strokeLinecap=\"round\"\n opacity={0.85}\n />\n )}\n\n \n \n {showGround && (\n <>\n \n \n \n )}\n\n {/* The band: a knurled hoop with a bore straight through it. */}\n \n {/* The whole cylinder, then the bore behind it, then the near face,\n so the hole is a hole rather than a disc painted on. */}\n \n \n {/* The far wall of the bore, catching what light there is. */}\n \n \n {Array.from({ length: 26 }, (_, index) => {\n const t = (index / 26) * Math.PI * 2\n const inner = {\n x: BAND_CENTER.x + Math.cos(t) * (BAND_BORE + 2.5),\n y: BAND_CENTER.y + Math.sin(t) * (BAND_BORE + 2.5),\n }\n const outer = {\n x: BAND_CENTER.x + Math.cos(t) * (BAND_OUTER - 2),\n y: BAND_CENTER.y + Math.sin(t) * (BAND_OUTER - 2),\n }\n return (\n \n )\n })}\n \n\n {/* The shank plates: the flanks of the band, proud of it. */}\n {([-1, 1] as const).map((side) => {\n const id = side < 0 ? \"shank-port\" : \"shank-starboard\"\n const from = side < 0 ? 104 : 14\n const to = side < 0 ? 166 : 76\n const plate = [\n ...shankArc(from, to, BAND_OUTER - 0.6),\n ...shankArc(to, from, BAND_BORE + 3),\n ].map((point) => at(id, point))\n return (\n \n \n \n at(id, point),\n ),\n -BAND_HALF * 1.05,\n )}\n fill=\"none\"\n stroke={palette.dark}\n strokeWidth={0.8}\n opacity={0.45}\n />\n \n )\n })}\n\n {/* Collar, bezel plate and the two crystal inlays that flank it. */}\n \n \n \n\n \n \n \n\n {([-1, 1] as const).map((side) => {\n const id = side < 0 ? \"inlay-port\" : \"inlay-starboard\"\n const dx = slide(id)\n const dy = lift(id)\n return (\n \n \n \n )\n })}\n\n {/* The lens: a dome, and the iris drawn on its face. */}\n \n at(\"lens\", p)),\n BEZEL_HALF_DEPTH * 0.86,\n )}\n fill={palette.glow}\n stroke={palette.accent}\n strokeWidth={1.2}\n opacity={0.3 + bloom * 0.5}\n />\n \n \n \n {/* The spiral in the bore — abstract, and not a mark of anything. */}\n {\n const t = (index / 39) * Math.PI * 3.4\n const r = 2 + (index / 39) * 8.4\n return `${index ? \"L\" : \"M\"} ${px(Math.cos(t) * r)} ${px(Math.sin(t) * r)}`\n }).join(\" \")}\n fill=\"none\"\n stroke={palette.accent}\n strokeWidth={0.9}\n opacity={0.4 + bloom * 0.4}\n />\n \n {[0, 90, 180, 270].map((degrees) => {\n const radians = (degrees * Math.PI) / 180\n return (\n \n )\n })}\n {gauge && (\n \n )}\n \n \n\n {variant === \"blueprint\" && (\n \n {`${percent}%`}\n \n )}\n \n \n\n {label && (\n \n {label}\n \n )}\n \n )\n}\n\nexport { ConstructRing }\n", "type": "registry:ui", "target": "@ui/construct-ring.tsx" } ], "categories": [ "robotics", "fabrication" ], "type": "registry:ui" }