fix(viewer): 修复墙体材质切换后缩放旋转时颜色恢复问题

问题描述：
选中墙体并切换材质颜色后，在界面上进行缩放、旋转或移动操作时，
墙体实际渲染的颜色会恢复为原来的白色，但颜色选项卡显示仍为选中的颜色。

根本原因：
WallCutout 系统在每次相机移动时，直接使用固定的白色材质覆盖墙体材质，
完全忽略了用户在节点上设置的自定义材质。

修复内容：
- 为每个墙体创建独立的材质对象，支持用户自定义颜色
- 支持预设颜色（brick, concrete, wood 等）和自定义颜色属性
- 添加材质哈希值跟踪，检测材质变化并重新创建材质
- 提取 getWallHideState() 辅助函数，优化代码结构
- 添加预设颜色映射的类型安全改进，使用 as const 和 keyof 类型操作

packages/viewer/src/components/renderers/ceiling/ceiling-renderer.tsx

@@ -40,13 +40,14 @@ export const CeilingRenderer = ({ node }: { node: CeilingNode }) => {
   const handlers = useNodeEvents(node, 'ceiling')
 
   const materials = useMemo(() => {
-    if (node.material) {
-      const props = node.material.properties
+    const mat = node.material
+    if (mat) {
+      const props = mat.properties
       const color = props?.color || '#999999'
       return createCeilingMaterials(color)
     }
     return { topMaterial: createCeilingMaterials().topMaterial, bottomMaterial: DEFAULT_CEILING_MATERIAL }
-  }, [node.material])
+  }, [node.material, node.material?.preset, node.material?.properties, node.material?.texture])
 
   return (
     <mesh material={materials.bottomMaterial} ref={ref}>

packages/viewer/src/components/renderers/door/door-renderer.tsx

@@ -12,8 +12,10 @@ export const DoorRenderer = ({ node }: { node: DoorNode }) => {
   const isTransient = !!(node.metadata as Record<string, unknown> | null)?.isTransient
 
   const material = useMemo(() => {
-    return node.material ? createMaterial(node.material) : DEFAULT_DOOR_MATERIAL
-  }, [node.material])
+    const mat = node.material
+    if (!mat) return DEFAULT_DOOR_MATERIAL
+    return createMaterial(mat)
+  }, [node.material, node.material?.preset, node.material?.properties, node.material?.texture])
 
   return (
     <mesh

packages/viewer/src/components/renderers/roof-segment/roof-segment-renderer.tsx

@@ -1,7 +1,8 @@
 import { type RoofSegmentNode, useRegistry } from '@pascal-app/core'
-import { useRef } from 'react'
+import { useMemo, useRef } from 'react'
 import type * as THREE from 'three'
 import { useNodeEvents } from '../../../hooks/use-node-events'
+import { createMaterial } from '../../../lib/materials'
 import useViewer from '../../../store/use-viewer'
 import { roofDebugMaterials, roofMaterials } from '../roof/roof-materials'
 
@@ -13,9 +14,17 @@ export const RoofSegmentRenderer = ({ node }: { node: RoofSegmentNode }) => {
   const handlers = useNodeEvents(node, 'roof-segment')
   const debugColors = useViewer((s) => s.debugColors)
 
+  const customMaterial = useMemo(() => {
+    const mat = node.material
+    if (!mat) return null
+    return createMaterial(mat)
+  }, [node.material, node.material?.preset, node.material?.properties, node.material?.texture])
+
+  const material = debugColors ? roofDebugMaterials : customMaterial || roofMaterials
+
   return (
     <mesh
-      material={debugColors ? roofDebugMaterials : roofMaterials}
+      material={material}
       position={node.position}
       ref={ref}
       rotation-y={node.rotation}

packages/viewer/src/components/renderers/roof/roof-renderer.tsx

@@ -16,8 +16,10 @@ export const RoofRenderer = ({ node }: { node: RoofNode }) => {
   const debugColors = useViewer((s) => s.debugColors)
 
   const customMaterial = useMemo(() => {
-    return node.material ? createMaterial(node.material) : null
-  }, [node.material])
+    const mat = node.material
+    if (!mat) return null
+    return createMaterial(mat)
+  }, [node.material, node.material?.preset, node.material?.properties, node.material?.texture])
 
   const material = debugColors ? roofDebugMaterials : customMaterial || roofMaterials
 

packages/viewer/src/components/renderers/slab/slab-renderer.tsx

@@ -12,8 +12,10 @@ export const SlabRenderer = ({ node }: { node: SlabNode }) => {
   const handlers = useNodeEvents(node, 'slab')
 
   const material = useMemo(() => {
-    return node.material ? createMaterial(node.material) : DEFAULT_SLAB_MATERIAL
-  }, [node.material])
+    const mat = node.material
+    if (!mat) return DEFAULT_SLAB_MATERIAL
+    return createMaterial(mat)
+  }, [node.material, node.material?.preset, node.material?.properties, node.material?.texture])
 
   return (
     <mesh castShadow receiveShadow ref={ref} {...handlers} visible={node.visible} material={material}>

packages/viewer/src/components/renderers/wall/wall-renderer.tsx

@@ -17,8 +17,10 @@ export const WallRenderer = ({ node }: { node: WallNode }) => {
   const handlers = useNodeEvents(node, 'wall')
 
   const material = useMemo(() => {
-    return node.material ? createMaterial(node.material) : DEFAULT_WALL_MATERIAL
-  }, [node.material])
+    const mat = node.material
+    if (!mat) return DEFAULT_WALL_MATERIAL
+    return createMaterial(mat)
+  }, [node.material, node.material?.preset, node.material?.properties, node.material?.texture])
 
   return (
     <mesh castShadow receiveShadow ref={ref} visible={node.visible} material={material}>

packages/viewer/src/components/renderers/window/window-renderer.tsx

@@ -12,8 +12,10 @@ export const WindowRenderer = ({ node }: { node: WindowNode }) => {
   const isTransient = !!(node.metadata as Record<string, unknown> | null)?.isTransient
 
   const material = useMemo(() => {
-    return node.material ? createMaterial(node.material) : DEFAULT_WINDOW_MATERIAL
-  }, [node.material])
+    const mat = node.material
+    if (!mat) return DEFAULT_WINDOW_MATERIAL
+    return createMaterial(mat)
+  }, [node.material, node.material?.preset, node.material?.properties, node.material?.texture])
 
   return (
     <mesh

packages/viewer/src/systems/wall/wall-cutout.tsx

@@ -10,81 +10,100 @@ const tmpVec = new Vector3()
 const u = new Vector3()
 const v = new Vector3()
 
-// Dot pattern shader
 const dotPattern = Fn(() => {
-  // Create a repeating grid pattern based on world position
-  const scale = float(0.1) // Dot grid spacing (10cm)
-  const dotSize = float(0.3) // Size of dots relative to grid
+  const scale = float(0.1)
+  const dotSize = float(0.3)
 
-  // Use XY coordinates for pattern on wall face
   const uv = vec2(positionLocal.x, positionLocal.y).div(scale)
   const gridUV = fract(uv)
 
-  // Distance from center of grid cell (creates circular dots)
   const dist = length(gridUV.sub(0.5))
 
-  // Create dots: 1 where we want dots, 0 elsewhere
   const dots = step(dist, dotSize.mul(0.5))
 
-  // Vertical fade: fade out as Y increases (from bottom to top)
-  const fadeHeight = float(2.5) // Fade over 2.5 meters
+  const fadeHeight = float(2.5)
   const yFade = float(1).sub(smoothstep(float(0), fadeHeight, positionLocal.y))
 
   return dots.mul(yFade)
 })
 
-const invsibleWallMaterial = new MeshStandardNodeMaterial({
-  transparent: true,
-  opacityNode: mix(float(0.0), float(0.24), dotPattern()),
-  color: 'white',
-  depthWrite: false,
-  emissive: 'white',
-})
-const wallMaterial = new MeshStandardNodeMaterial({
-  color: 'white',
+interface WallMaterials {
+  visible: MeshStandardNodeMaterial
+  invisible: MeshStandardNodeMaterial
+  materialHash: string
+}
+
+const wallMaterialCache = new Map<string, WallMaterials>()
+
+function getMaterialHash(wallNode: WallNode): string {
+  if (!wallNode.material) return 'none'
+  const mat = wallNode.material
+  if (mat.preset && mat.preset !== 'custom') {
+    return `preset-${mat.preset}`
+  }
+  if (mat.properties) {
+    return `props-${mat.properties.color}-${mat.properties.roughness}-${mat.properties.metalness}`
+  }
+  return 'default'
+}
+
+const presetColors = {
+  white: '#ffffff',
+  brick: '#8b4513',
+  concrete: '#808080',
+  wood: '#deb887',
+  glass: '#87ceeb',
+  metal: '#c0c0c0',
+  plaster: '#f5f5dc',
+  tile: '#dcdcdc',
+  marble: '#f5f5f5',
+} as const
+
+function getPresetColor(preset: string): string {
+  return presetColors[preset as keyof typeof presetColors] ?? '#ffffff'
+}
+
+function getMaterialsForWall(wallNode: WallNode): WallMaterials {
+  const cacheKey = wallNode.id
+  const materialHash = getMaterialHash(wallNode)
+
+  const existing = wallMaterialCache.get(cacheKey)
+  if (existing && existing.materialHash === materialHash) {
+    return existing
+  }
+
+  if (existing) {
+    existing.visible.dispose()
+    existing.invisible.dispose()
+  }
+
+  let userColor = '#ffffff'
+  if (wallNode.material?.properties?.color) {
+    userColor = wallNode.material.properties.color
+  } else if (wallNode.material?.preset && wallNode.material.preset !== 'custom') {
+    userColor = getPresetColor(wallNode.material.preset)
+  }
+
+  const visibleMat = new MeshStandardNodeMaterial({
+    color: userColor,
     roughness: 1,
     metalness: 0,
   })
 
-export const WallCutout = () => {
-  const lastCameraPosition = useRef(new Vector3())
-  const lastCameraTarget = useRef(new Vector3())
-  const lastUpdateTime = useRef(0)
-  const lastWallMode = useRef<string>(useViewer.getState().wallMode)
-  const lastNumberOfWalls = useRef(0)
+  const invisibleMat = new MeshStandardNodeMaterial({
+    transparent: true,
+    opacityNode: mix(float(0.0), float(0.24), dotPattern()),
+    color: userColor,
+    depthWrite: false,
+    emissive: userColor,
+  })
 
-  useFrame(({ camera, clock }) => {
-    const wallMode = useViewer.getState().wallMode
-    const currentTime = clock.elapsedTime
-    const currentCameraPosition = camera.position
-    camera.getWorldDirection(tmpVec)
-    tmpVec.add(currentCameraPosition)
+  const result: WallMaterials = { visible: visibleMat, invisible: invisibleMat, materialHash }
+  wallMaterialCache.set(cacheKey, result)
+  return result
+}
 
-    // Throttle: only update if camera moved significantly AND enough time passed
-    const distanceMoved = currentCameraPosition.distanceTo(lastCameraPosition.current)
-    const directionChanged = tmpVec.distanceTo(lastCameraTarget.current)
-    const timeSinceUpdate = currentTime - lastUpdateTime.current
-
-    // Update if moved > 0.5m OR direction changed > 0.3 AND at least 100ms passed
-    if (
-      ((distanceMoved > 0.5 || directionChanged > 0.3) && timeSinceUpdate > 0.1) ||
-      lastWallMode.current !== wallMode ||
-      sceneRegistry.byType.wall.size !== lastNumberOfWalls.current
-    ) {
-      // Camera has moved, update cutout logic here
-
-      // Update last known positions and time
-      lastCameraPosition.current.copy(currentCameraPosition)
-      lastCameraTarget.current.copy(tmpVec)
-      lastUpdateTime.current = currentTime
-      camera.getWorldDirection(u)
-
-      const walls = sceneRegistry.byType.wall
-      walls.forEach((wallId) => {
-        const wallMesh = sceneRegistry.nodes.get(wallId)
-        if (!wallMesh) return
-        const wallNode = useScene.getState().nodes[wallId as WallNode['id']]
-        if (!wallNode || wallNode.type !== 'wall') return
+function getWallHideState(wallNode: WallNode, wallMesh: Mesh, wallMode: string, cameraDir: Vector3): boolean {
   let hideWall = wallNode.frontSide === 'interior' && wallNode.backSide === 'interior'
 
   if (wallMode === 'up') {
@@ -93,18 +112,91 @@ export const WallCutout = () => {
     hideWall = true
   } else {
     wallMesh.getWorldDirection(v)
-          if (v.dot(u) < 0) {
-            // Front side
+    if (v.dot(cameraDir) < 0) {
       if (wallNode.frontSide === 'exterior' && wallNode.backSide !== 'exterior') {
         hideWall = true
       }
     } else if (wallNode.backSide === 'exterior' && wallNode.frontSide !== 'exterior') {
-            // Back side
       hideWall = true
     }
   }
-        ;(wallMesh as Mesh).material = hideWall ? invsibleWallMaterial : wallMaterial
+
+  return hideWall
+}
+
+export const WallCutout = () => {
+  const lastCameraPosition = useRef(new Vector3())
+  const lastCameraTarget = useRef(new Vector3())
+  const lastUpdateTime = useRef(0)
+  const lastWallMode = useRef<string>(useViewer.getState().wallMode)
+  const lastNumberOfWalls = useRef(0)
+  const lastWallMaterials = useRef<Map<string, WallMaterials>>(new Map())
+
+  useFrame(({ camera, clock }) => {
+    const wallMode = useViewer.getState().wallMode
+    const currentTime = clock.elapsedTime
+    const currentCameraPosition = camera.position
+    camera.getWorldDirection(tmpVec)
+    tmpVec.add(currentCameraPosition)
+
+    const distanceMoved = currentCameraPosition.distanceTo(lastCameraPosition.current)
+    const directionChanged = tmpVec.distanceTo(lastCameraTarget.current)
+    const timeSinceUpdate = currentTime - lastUpdateTime.current
+
+    const shouldUpdate =
+      ((distanceMoved > 0.5 || directionChanged > 0.3) && timeSinceUpdate > 0.1) ||
+      lastWallMode.current !== wallMode ||
+      sceneRegistry.byType.wall.size !== lastNumberOfWalls.current
+
+    const walls = sceneRegistry.byType.wall
+    const currentWallIds = new Set<string>()
+
+    walls.forEach((wallId) => {
+      const wallMesh = sceneRegistry.nodes.get(wallId)
+      if (!wallMesh) return
+      const wallNode = useScene.getState().nodes[wallId as WallNode['id']]
+      if (!wallNode || wallNode.type !== 'wall') return
+
+      currentWallIds.add(wallId)
+
+      const hideWall = getWallHideState(wallNode, wallMesh as Mesh, wallMode, u)
+
+      if (shouldUpdate) {
+        const materials = getMaterialsForWall(wallNode)
+        ;(wallMesh as Mesh).material = hideWall ? materials.invisible : materials.visible
+      } else {
+        const currentMaterial = (wallMesh as Mesh).material
+        const materials = wallMaterialCache.get(wallId)
+        if (!materials || currentMaterial !== (hideWall ? materials.invisible : materials.visible)) {
+          const newMaterials = getMaterialsForWall(wallNode)
+          ;(wallMesh as Mesh).material = hideWall ? newMaterials.invisible : newMaterials.visible
+        }
+      }
     })
+
+    if (shouldUpdate) {
+      lastCameraPosition.current.copy(currentCameraPosition)
+      lastCameraTarget.current.copy(tmpVec)
+      lastUpdateTime.current = currentTime
+      camera.getWorldDirection(u)
+
+      if (lastWallMode.current !== wallMode) {
+        wallMaterialCache.clear()
+      }
+
+      for (const [wallId, mats] of lastWallMaterials.current) {
+        if (!currentWallIds.has(wallId)) {
+          mats.visible.dispose()
+          mats.invisible.dispose()
+          wallMaterialCache.delete(wallId)
+        }
+      }
+
+      lastWallMaterials.current.clear()
+      for (const [wallId, mats] of wallMaterialCache) {
+        lastWallMaterials.current.set(wallId, mats)
+      }
+
       lastWallMode.current = wallMode
       lastNumberOfWalls.current = sceneRegistry.byType.wall.size
     }