feat:按形体画导线并点空白取消选眼

导线从球体抽成独立曲面模块，按 blob/bean/egg 等形体采样。
点空白处取消眼睛选中并回到身体。

src/components/AvatarStage.vue

@@ -157,6 +157,7 @@ defineExpose({
       v-if="active && manual"
       :manual="manual"
       :hero="liveHero"
+      :shape="shape"
       @update:pose="(pose: HeadPose) => patch({ pose })"
       @update:selected="(selected: ManualPart | null) => patch({ selected })"
       @update:eyes="(eyes: EyeTune) => patch({ eyes })"

src/components/ManualCanvas.vue

@@ -13,10 +13,10 @@ import {
   rotationRing,
   splitRingArcs,
   unitVector,
-  wirePaths,
   type HeadPose,
   type Point3
 } from '@/ui/pose/math'
+import { surfaceOf, wirePaths } from '@/ui/pose/surface'
 import {
   clampEyes,
   clampPose,
@@ -49,6 +49,7 @@ export type HeroHandle = {
 const props = defineProps<{
   manual: ManualState
   hero: HeroHandle | null
+  shape?: string
 }>()
 
 const emit = defineEmits<{
@@ -369,7 +370,9 @@ const paintWires = () => {
   const group = ensureWires()
   if (!group) return
   const radius = engineRadius()
-  const paths = showWire.value ? wirePaths(pose.value, radius, [radius, radius]) : []
+  const paths = showWire.value
+    ? wirePaths(pose.value, surfaceOf(props.shape || 'blob'), [radius, radius])
+    : []
   const ns = 'http://www.w3.org/2000/svg'
   while (group.childNodes.length > paths.length) group.lastChild?.remove()
   paths.forEach((d, index) => {
@@ -438,10 +441,21 @@ const setBodyCursor = (cursor: string) => {
   parts.body.style.cursor = cursor
 }
 
+const selectBody = () => {
+  if (selected.value !== 'body') emit('update:selected', 'body')
+}
+
+const isEyeTarget = (target: EventTarget | null) => {
+  if (!(target instanceof Element)) return false
+  if (target.closest('.editor-control')) return true
+  const eyes = props.hero?.parts()?.eyes
+  return !!eyes?.some((el) => el === target || el.contains(target))
+}
+
 const startArcball = (event: PointerEvent) => {
   const point = localOf(event)
   if (!point) return
-  if (selected.value !== 'left' && selected.value !== 'right') emit('update:selected', 'body')
+  selectBody()
   poseSession = beginManipulation(pose.value)
   drag.value = {
     kind: 'arcball',
@@ -659,6 +673,12 @@ const onEyeDown = (side: 'left' | 'right') => (event: PointerEvent) => {
   emit('update:selected', side)
 }
 
+const onBlankDown = (event: PointerEvent) => {
+  if (event.button !== 0) return
+  if (isEyeTarget(event.target)) return
+  if (selected.value === 'left' || selected.value === 'right') selectBody()
+}
+
 const bindParts = () => {
   const parts = props.hero?.parts()
   if (!parts) return () => {}
@@ -711,6 +731,7 @@ watch(
 
 onMounted(() => {
   window.addEventListener('keydown', onKey, true)
+  window.addEventListener('pointerdown', onBlankDown, true)
   raf = requestAnimationFrame(tick)
   syncOverlay()
   unbind = bindParts()
@@ -720,6 +741,7 @@ onMounted(() => {
 
 onBeforeUnmount(() => {
   window.removeEventListener('keydown', onKey, true)
+  window.removeEventListener('pointerdown', onBlankDown, true)
   cancelAnimationFrame(raf)
   stop()
   unbind()

src/ui/pose/math.ts

@@ -225,29 +225,15 @@ export const unitVector = (
   return [x / length, y / length]
 }
 
-const polyline = (points: Point3[]) => {
-  if (points.length < 2) return ''
-  return `M${points[0]![0].toFixed(2)} ${points[0]![1].toFixed(2)}${points
-    .slice(1)
-    .map((point) => `L${point[0].toFixed(2)} ${point[1].toFixed(2)}`)
-    .join('')}`
-}
-
-const visibleWire = (points: Point3[]) => {
-  const segments: Point3[][] = []
-  let segment: Point3[] = []
-  for (const point of points) {
-    if (point[2] > 0) segment.push(point)
-    else if (segment.length) {
-      segments.push(segment)
-      segment = []
-    }
-  }
-  if (segment.length) segments.push(segment)
-  return segments
-    .filter((item) => item.length > 1)
-    .map(polyline)
-    .join('')
+export const projectLocalPoint = (
+  pose: HeadPose,
+  local: Point3,
+  origin: readonly [number, number] = [0, 0],
+  home: HeadPose = POSE_HOME
+): Point3 => {
+  const rotated = rotateWithQuaternion(screenOrientation(pose, home), local)
+  const scale = FOCAL / Math.max(FOCAL - rotated[2] * PERSPECTIVE, 0.0001)
+  return [origin[0] + rotated[0] * scale, origin[1] + rotated[1] * scale, rotated[2]]
 }
 
 export const roundedRectangle = (width: number, height: number): (readonly [number, number])[] => {
@@ -332,25 +318,3 @@ export const projectFacePoint = (
     rotated[2]
   ]
 }
-
-export const wirePaths = (
-  pose: HeadPose,
-  radius: number,
-  origin: readonly [number, number] = [0, 0]
-): string[] => {
-  const project = (longitude: number, latitude: number): Point3 =>
-    projectFacePoint(
-      pose,
-      longitude * radius,
-      latitude * radius,
-      radius,
-      origin
-    )
-  const parallels = [-60, -30, 0, 30, 60].map((latitude) =>
-    Array.from({ length: 73 }, (_, index) => project(radians(-180 + index * 5), radians(latitude)))
-  )
-  const meridians = Array.from({ length: 12 }, (_, index) => -150 + index * 30).map((longitude) =>
-    Array.from({ length: 37 }, (_, step) => project(radians(longitude), radians(-90 + step * 5)))
-  )
-  return [...parallels, ...meridians].map(visibleWire).filter(Boolean)
-}

src/ui/pose/surface.ts

@@ -0,0 +1,278 @@
+import {
+  projectLocalPoint,
+  radians,
+  rotateWithQuaternion,
+  screenOrientation,
+  type HeadPose,
+  type Point3
+} from './math'
+
+export type SurfaceType = 'sphere' | 'ellipsoid' | 'capsule' | 'cube' | 'cone' | 'diamond'
+
+export type SurfaceConfig = {
+  type: SurfaceType
+  width: number
+  height: number
+  depth: number
+  roundness: number
+}
+
+type Kind = { type: SurfaceType; roundness?: number; depthScale?: number }
+
+const KIND: Record<string, Kind> = {
+  blob: { type: 'sphere' },
+  bean: { type: 'capsule' },
+  egg: { type: 'ellipsoid' },
+  teardrop: { type: 'cone', roundness: 0.7 },
+  cloud: { type: 'ellipsoid', depthScale: 0.58 },
+  leaf: { type: 'diamond', roundness: 0.35 },
+  squircle: { type: 'cube', roundness: 0.55 },
+  capsule: { type: 'capsule' }
+}
+
+type Sample = { point: Point3; normal: Point3 }
+
+const signedPow = (value: number, exp: number) => Math.sign(value) * Math.abs(value) ** exp
+
+const normalize = ([x, y, z]: Point3): Point3 => {
+  const length = Math.hypot(x, y, z) || 1
+  return [x / length, y / length, z / length]
+}
+
+const measure = (id: string): { width: number; height: number } => {
+  const geo = window.GROK_GEO
+  const shape = geo?.shapes?.[id] as
+    | { path?: string; radius?: number; top?: number; bottom?: number }
+    | undefined
+  const Re = geo?.Re ?? 114.27
+  const flatten = (
+    window as unknown as { GROK_MATH?: { flattenPath?: (d: string, step?: number) => number[][] } }
+  ).GROK_MATH?.flattenPath
+  if (shape?.path && flatten) {
+    let minX = Infinity
+    let maxX = -Infinity
+    let minY = Infinity
+    let maxY = -Infinity
+    for (const pair of flatten(shape.path, 8)) {
+      const x = pair[0]!
+      const y = pair[1]!
+      if (x < minX) minX = x
+      if (x > maxX) maxX = x
+      if (y < minY) minY = y
+      if (y > maxY) maxY = y
+    }
+    if (Number.isFinite(minX)) return { width: maxX - minX, height: maxY - minY }
+  }
+  const height =
+    shape?.bottom != null && shape.top != null ? shape.bottom - shape.top : Re * 2
+  return { width: (shape?.radius ?? Re) * 2, height }
+}
+
+const surfaceCache = new Map<string, SurfaceConfig>()
+
+export const surfaceOf = (shape: string): SurfaceConfig => {
+  const hit = surfaceCache.get(shape)
+  if (hit) return hit
+  const kind = KIND[shape] ?? { type: 'ellipsoid' as const }
+  const { width, height } = measure(shape)
+  const depth = width * (kind.depthScale ?? (kind.type === 'cube' ? 0.9 : 1))
+  const surface: SurfaceConfig = {
+    type: kind.type,
+    width,
+    height,
+    depth,
+    roundness: kind.roundness ?? 1
+  }
+  surfaceCache.set(shape, surface)
+  return surface
+}
+
+const cubeExp = (roundness: number) => {
+  if (roundness <= 0) return Infinity
+  const power = 0.04 + (Math.min(2, roundness) / 2) * 0.96
+  return 2 / power
+}
+
+const diamondExp = (roundness: number) => 1 + Math.min(2, Math.max(0, roundness)) / 2
+
+const lpPoint = (config: SurfaceConfig, lon: number, lat: number, exp: number): Point3 => {
+  const sx = Math.cos(lat) * Math.sin(lon)
+  const sy = Math.sin(lat)
+  const sz = Math.cos(lat) * Math.cos(lon)
+  const length = Number.isFinite(exp)
+    ? (Math.abs(sx) ** exp + Math.abs(sy) ** exp + Math.abs(sz) ** exp) ** (1 / exp) || 1
+    : Math.max(Math.abs(sx), Math.abs(sy), Math.abs(sz)) || 1
+  return [(config.width / 2) * (sx / length), (config.height / 2) * (sy / length), (config.depth / 2) * (sz / length)]
+}
+
+const ellipsoid = (config: SurfaceConfig, lon: number, lat: number): Point3 => [
+  (config.width / 2) * Math.cos(lat) * Math.sin(lon),
+  (config.height / 2) * Math.sin(lat),
+  (config.depth / 2) * Math.cos(lat) * Math.cos(lon)
+]
+
+const capsule = (config: SurfaceConfig, lon: number, lat: number): Point3 => {
+  const rx = config.width / 2
+  const rz = config.depth / 2
+  const cap = Math.min(rx, config.height / 2)
+  const mid = Math.max(0, config.height / 2 - cap)
+  const meridian = mid * 2 + Math.PI * cap
+  const distance = ((lat + Math.PI / 2) / Math.PI) * meridian
+  let radial = rx
+  let y = 0
+  if (distance < (Math.PI * cap) / 2) {
+    const angle = -Math.PI / 2 + distance / cap
+    radial = rx * Math.cos(angle)
+    y = -mid + cap * Math.sin(angle)
+  } else if (distance <= (Math.PI * cap) / 2 + mid * 2) {
+    y = -mid + distance - (Math.PI * cap) / 2
+  } else {
+    const angle = (distance - (Math.PI * cap) / 2 - mid * 2) / cap
+    radial = rx * Math.cos(angle)
+    y = mid + cap * Math.sin(angle)
+  }
+  return [radial * Math.sin(lon), y, radial * (rx ? rz / rx : 1) * Math.cos(lon)]
+}
+
+const cone = (config: SurfaceConfig, lon: number, lat: number): Point3 => {
+  const t = (lat + Math.PI / 2) / Math.PI
+  const tip = 0.16 * config.roundness
+  const base = 0.28 * config.roundness
+  let radiusScale: number
+  let yT = t
+  if (tip > 0 && t < tip) {
+    const a = (t / tip) * (Math.PI / 2)
+    radiusScale = tip * Math.sin(a)
+    yT = tip * (1 - Math.cos(a))
+  } else if (base > 0 && t > 1 - base) {
+    const a = ((t - (1 - base)) / base) * (Math.PI / 2)
+    radiusScale = 1 - base + base * Math.cos(a)
+    yT = 1 - base + base * Math.sin(a)
+  } else {
+    const span = 1 - tip - base
+    const u = span > 0 ? (t - tip) / span : 0
+    radiusScale = tip + (1 - base - tip) * u
+  }
+  return [
+    (config.width / 2) * radiusScale * Math.sin(lon),
+    -config.height / 2 + config.height * yT,
+    (config.depth / 2) * radiusScale * Math.cos(lon)
+  ]
+}
+
+export const surfacePointAt = (config: SurfaceConfig, lon: number, lat: number): Point3 => {
+  switch (config.type) {
+    case 'sphere':
+    case 'ellipsoid':
+      return ellipsoid(config, lon, lat)
+    case 'capsule':
+      return capsule(config, lon, lat)
+    case 'cube':
+      return lpPoint(config, lon, lat, cubeExp(config.roundness))
+    case 'diamond':
+      return lpPoint(config, lon, lat, diamondExp(config.roundness))
+    case 'cone':
+      return cone(config, lon, lat)
+  }
+}
+
+const lpNormal = (config: SurfaceConfig, point: Point3, exp: number): Point3 => {
+  const rx = config.width / 2 || 1
+  const ry = config.height / 2 || 1
+  const rz = config.depth / 2 || 1
+  if (!Number.isFinite(exp)) {
+    const n: Point3 = [point[0] / rx, point[1] / ry, point[2] / rz]
+    const axis = n.reduce((i, v, j, a) => (Math.abs(v) > Math.abs(a[i]!) ? j : i), 0)
+    return normalize([axis === 0 ? Math.sign(n[0]) : 0, axis === 1 ? Math.sign(n[1]) : 0, axis === 2 ? Math.sign(n[2]) : 0])
+  }
+  return normalize([
+    signedPow(point[0] / rx, exp - 1) / rx,
+    signedPow(point[1] / ry, exp - 1) / ry,
+    signedPow(point[2] / rz, exp - 1) / rz
+  ])
+}
+
+const tangentNormal = (config: SurfaceConfig, lon: number, lat: number): Point3 => {
+  const eps = 0.0006
+  const beforeLon = surfacePointAt(config, lon - eps, lat)
+  const afterLon = surfacePointAt(config, lon + eps, lat)
+  const beforeLat = surfacePointAt(config, lon, Math.max(-Math.PI / 2, lat - eps))
+  const afterLat = surfacePointAt(config, lon, Math.min(Math.PI / 2, lat + eps))
+  const dx: Point3 = [afterLon[0] - beforeLon[0], afterLon[1] - beforeLon[1], afterLon[2] - beforeLon[2]]
+  const dy: Point3 = [afterLat[0] - beforeLat[0], afterLat[1] - beforeLat[1], afterLat[2] - beforeLat[2]]
+  return normalize([
+    dx[1] * dy[2] - dx[2] * dy[1],
+    dx[2] * dy[0] - dx[0] * dy[2],
+    dx[0] * dy[1] - dx[1] * dy[0]
+  ])
+}
+
+const sampleAt = (config: SurfaceConfig, lon: number, lat: number): Sample => {
+  const point = surfacePointAt(config, lon, lat)
+  if (config.type === 'sphere' || config.type === 'ellipsoid') {
+    const rx = config.width / 2 || 1
+    const ry = config.height / 2 || 1
+    const rz = config.depth / 2 || 1
+    return {
+      point,
+      normal: normalize([point[0] / (rx * rx), point[1] / (ry * ry), point[2] / (rz * rz)])
+    }
+  }
+  if (config.type === 'cube') return { point, normal: lpNormal(config, point, cubeExp(config.roundness)) }
+  if (config.type === 'diamond') return { point, normal: lpNormal(config, point, diamondExp(config.roundness)) }
+  return { point, normal: tangentNormal(config, lon, lat) }
+}
+
+const keyOf = (surface: SurfaceConfig) =>
+  `${surface.type}:${surface.width.toFixed(2)}:${surface.height.toFixed(2)}:${surface.depth.toFixed(2)}:${surface.roundness}`
+
+const cache = new Map<string, Sample[][]>()
+
+const curvesOf = (surface: SurfaceConfig): Sample[][] => {
+  const key = keyOf(surface)
+  const hit = cache.get(key)
+  if (hit) return hit
+  const parallels = [-60, -30, 0, 30, 60].map((lat) =>
+    Array.from({ length: 73 }, (_, i) => sampleAt(surface, radians(-180 + i * 5), radians(lat)))
+  )
+  const meridians = Array.from({ length: 12 }, (_, i) => -150 + i * 30).map((lon) =>
+    Array.from({ length: 37 }, (_, step) => sampleAt(surface, radians(lon), radians(-90 + step * 5)))
+  )
+  const curves = [...parallels, ...meridians]
+  if (cache.size > 24) cache.delete(cache.keys().next().value!)
+  cache.set(key, curves)
+  return curves
+}
+
+const polyline = (points: Point3[]) => {
+  if (points.length < 2) return ''
+  return `M${points[0]![0].toFixed(2)} ${points[0]![1].toFixed(2)}${points
+    .slice(1)
+    .map((point) => `L${point[0].toFixed(2)} ${point[1].toFixed(2)}`)
+    .join('')}`
+}
+
+const visibleWire = (samples: Sample[], pose: HeadPose, origin: readonly [number, number]) => {
+  const orientation = screenOrientation(pose)
+  const segments: Point3[][] = []
+  let segment: Point3[] = []
+  for (const sample of samples) {
+    const facing = rotateWithQuaternion(orientation, sample.normal)[2] > 0
+    if (facing) segment.push(projectLocalPoint(pose, sample.point, origin))
+    else if (segment.length) {
+      segments.push(segment)
+      segment = []
+    }
+  }
+  if (segment.length) segments.push(segment)
+  return segments
+    .filter((item) => item.length > 1)
+    .map(polyline)
+    .join('')
+}
+
+export const wirePaths = (
+  pose: HeadPose,
+  surface: SurfaceConfig,
+  origin: readonly [number, number] = [0, 0]
+): string[] => curvesOf(surface).map((curve) => visibleWire(curve, pose, origin)).filter(Boolean)