解决红选问题 redSelection

src/core/ModelUtils.ts

@@ -13,6 +13,7 @@ import { LineSegments2 } from 'three/examples/jsm/lines/LineSegments2'
 import { LineMaterial } from 'three/examples/jsm/lines/LineMaterial'
 import { Line2 } from 'three/examples/jsm/lines/Line2'
 import { LineGeometry } from 'three/examples/jsm/lines/LineGeometry'
+import LineSegmentManager from '@/core/manager/LineSegmentManager.ts'
 
 /**
  * 计算点集凸包（2D）
@@ -696,6 +697,63 @@ export function getAABBox(matrix: THREE.Matrix4 | ItemJson): THREE.Vector3[] {
   return edgePositions
 }
 
+export function drawOBBoxUseLineManager(lineId: string, lineManager: LineSegmentManager, matrix: THREE.Matrix4 | ItemJson, padding: number = 0) {
+// 定义单位立方体的边对应的顶点索引
+  const edges = [
+    [0, 1], [1, 2], [2, 3], [3, 0],
+    [4, 5], [5, 6], [6, 7], [7, 4],
+    // [0, 4], [1, 5], [2, 6], [3, 7]
+    [0, 4], [4, 5],
+    [5, 1], [1, 2],
+    [2, 6], [6, 7],
+    [7, 3]
+  ]
+
+  // 定义单位立方体的8个顶点位置
+  const verticesParam = [
+    -0.5 - padding, -0.5, 0.5 + padding,
+    0.5 + padding, -0.5, 0.5 + padding,
+    0.5 + padding, 0.5, 0.5 + padding,
+    -0.5 - padding, 0.5, 0.5 + padding,
+    -0.5 - padding, -0.5, -0.5 - padding,
+    0.5 + padding, -0.5, -0.5 - padding,
+    0.5 + padding, 0.5, -0.5 - padding,
+    -0.5 - padding, 0.5, -0.5 - padding
+  ]
+
+  if (!(matrix instanceof THREE.Matrix4)) {
+    // 从 tf 读取的模型, 需要调整Y轴以使底面位于Y=0
+    matrix = getMatrixFromTf(matrix.tf)
+    for (let i = 1; i < verticesParam.length; i += 3) {
+      verticesParam[i] = verticesParam[i] + 0.5
+    }
+  }
+
+  const vertices = new Float32Array(verticesParam)
+  // 将顶点通过变换矩阵转换到世界坐标系中
+  const transformedVertices = []
+  for (let i = 0; i < vertices.length; i += 3) {
+    const vec = new THREE.Vector3(vertices[i], vertices[i + 1], vertices[i + 2])
+    vec.applyMatrix4(matrix)
+    transformedVertices.push(vec.x, vec.y, vec.z)
+  }
+
+  // 合并所有边的顶点信息
+  edges.forEach((edge, idx) => {
+    const start = new THREE.Vector3(
+      transformedVertices[edge[0] * 3],
+      transformedVertices[edge[0] * 3 + 1],
+      transformedVertices[edge[0] * 3 + 2]
+    )
+    const end = new THREE.Vector3(
+      transformedVertices[edge[1] * 3],
+      transformedVertices[edge[1] * 3 + 1],
+      transformedVertices[edge[1] * 3 + 2]
+    )
+    lineManager.createOrUpdateLine(lineId + '_' + idx, start, end)
+  })
+}
+
 /**
  * 根据变换矩阵绘制 OBB 包围盒, 注意返回 Line2 对象
  * @param matrix 物体的变换矩阵或 ItemJson 对象

src/core/manager/EntityManager.ts

@@ -51,6 +51,10 @@ export default class EntityManager {
     return Array.from(this.___entityMap.values())
   }
 
+  getEntityMapForFindManager() {
+    return this.___entityMap
+  }
+
   dispose() {
     // 清理所有差量渲染器
     for (const renderer of this.diffRenderer.values()) {

src/core/manager/ItemFindManager.ts

@@ -9,6 +9,7 @@ import type Viewport from '@/core/engine/Viewport.ts'
 // 主管理器类
 export default class ItemFindManager {
   private items = new Map<string, any>()
+  private viewport: Viewport
 
   dispose() {
     this.items.clear()
@@ -18,6 +19,7 @@ export default class ItemFindManager {
   }
 
   init(viewport: Viewport) {
+    this.viewport = viewport
   }
 
   // 添加或更新物品
@@ -40,6 +42,18 @@ export default class ItemFindManager {
 
   // 矩形区域查询（有交集）
   getItemsByRect(x1: number, z1: number, x2: number, z2: number): string[] {
-    return []
+    // 查找矩形框内所有对象
+    const from = new THREE.Vector2(x1, z1)
+    const to = new THREE.Vector2(x2, z2)
+    const ids = []
+    for (const [id, item] of this.viewport.entityManager.getEntityMapForFindManager()) {
+      const vector = new THREE.Vector2(item.tf[0][0], item.tf[0][2])
+      if (vector.x >= from.x && vector.x <= to.x &&
+        vector.y >= from.y && vector.y <= to.y) {
+        ids.push(id)
+      }
+    }
+
+    return ids
   }
 }

src/core/manager/LineSegmentManager.ts

@@ -10,7 +10,7 @@ import { LineSegmentsGeometry } from 'three/examples/jsm/lines/LineSegmentsGeome
  */
 export default class LineSegmentManager {
   private readonly viewport: Viewport
-  private readonly lineGeometry: LineSegmentsGeometry
+  private lineGeometry: LineSegmentsGeometry
   private readonly lineMaterial: LineMaterial
   private readonly lineSegments: LineSegments2
   private readonly segments: Map<string, LineWrap> = new Map()
@@ -27,7 +27,7 @@ export default class LineSegmentManager {
     // 创建线段的渲染对象
     this.lineSegments = new LineSegments2(this.lineGeometry, this.lineMaterial)
     this.lineSegments.name = name
-    this.lineSegments.frustumCulled = false
+    this.lineSegments.frustumCulled = true
     this.viewport.scene.add(this.lineSegments)
   }
 
@@ -124,6 +124,8 @@ export default class LineSegmentManager {
     // 初始化或调整数组大小
     if (!this.positionArray || this.positionArray.length !== positionCount) {
       this.positionArray = new Float32Array(positionCount)
+      this.lineGeometry.dispose() // 这是个bug, 线段数量改变时, 渲染总数不更新! 必须重新释放一次
+      this.lineGeometry = new LineSegmentsGeometry()
     }
 
     if (!this.colorArray || this.colorArray.length !== colorCount) {
@@ -175,13 +177,22 @@ export default class LineSegmentManager {
       this.colorArray![colorIndex++] = endColor.b
     })
 
-    // 更新几何体
+    // // 更新几何体
+    // this.lineGeometry.setPositions(this.positionArray)
+    // this.lineGeometry.setColors(this.colorArray)
+    // this.lineSegments.computeLineDistances()
+    // this.lineSegments.matrixWorldNeedsUpdate = true
+    // this.lineGeometry.instanceCount = this.segments.size
+    //
+    // console.log('draw line geometry', this.segments.size)
+    // this.needsUpdate = false
+
     this.lineGeometry.setPositions(this.positionArray)
     this.lineGeometry.setColors(this.colorArray)
 
-    // 设置实例计数为可见线段数量
-    // this.lineGeometry.instanceCount = Array.from(this.segments.values()).filter(s => s.visible).length
-    this.needsUpdate = false
+    this.lineSegments.geometry = this.lineGeometry // 更新引用
+    this.lineSegments.computeLineDistances()
+    this.lineSegments.matrixWorldNeedsUpdate = true
   }
 
   dispose() {
@@ -201,6 +212,12 @@ export default class LineSegmentManager {
     this.colorArray = null
   }
 
+  clear() {
+    this.segments.clear()
+    this.positionArray = null
+    this.colorArray = null
+    this.needsUpdate = true
+  }
 }
 
 

src/core/manager/SelectManager.ts

@@ -9,7 +9,9 @@ import { getSetter } from '@/core/manager/ModuleManager.ts'
 import Constract from '@/core/Constract.ts'
 import type { Object3DLike } from '@/types/ModelTypes.ts'
 import { PointManageWrap } from '@/core/manager/InstancePointManager.ts'
-import { drawOBBox, getAABBox, getOBBox } from '@/core/ModelUtils.ts'
+import { drawOBBox, drawOBBoxUseLineManager, getAABBox, getOBBox } from '@/core/ModelUtils.ts'
+import InstanceMeshManager from '@/core/manager/InstanceMeshManager.ts'
+import LineSegmentManager from '@/core/manager/LineSegmentManager.ts'
 
 /**
  * 选择工具，用于在设计器中显示选中对象的包围盒
@@ -75,22 +77,26 @@ export default class SelectManager {
     // EventBus.on('multiselectedObjectChanged', this.updateMultiSelectionBoxes)
   }
 
-  redSelectionGroup = new THREE.Group()
-
   updateMultiSelectionBoxes = () => {
-    const multiSelectedObjects = this.viewport.state.multiSelectedObjects
+    const multiSelectedItems = this.viewport.state.multiSelectedItems
     // 为所有多选对象创建包围盒线框
-    this.clearRedSelectionBoxes()
+    this.redSelectionBoxManager.clear()
 
-    if (!multiSelectedObjects || multiSelectedObjects.length === 0) {
+    if (!multiSelectedItems || multiSelectedItems.length === 0) {
       return
     }
 
-    for (const object of multiSelectedObjects) {
-      if (object.userData.entityId) {
-        this.createRedSelectionBox(object)
+    console.log('drawRedSelection', multiSelectedItems.length)
+    for (const item of multiSelectedItems) {
+      drawOBBoxUseLineManager(item.id + '_red', this.redSelectionBoxManager, item)
     }
   }
+
+  get redSelectionBoxManager(): LineSegmentManager {
+    const name = 'redSelectionBoxManager'
+    return this.viewport.getOrCreateLineManager(name, () =>
+      new LineSegmentManager(name, this.viewport, this.redMaterial)
+    )
   }
 
   // 取消红选
@@ -185,62 +191,6 @@ export default class SelectManager {
     })
   }
 
-  // 清除之前的红色包围盒线框
-  private clearRedSelectionBoxes() {
-    if (this.redSelectionGroup.children.length > 0) {
-      for (const child of this.redSelectionGroup.children) {
-        this.redSelectionGroup.remove(child)
-      }
-    }
-    this.viewport.scene.remove(this.redSelectionGroup)
-    this.redSelectionGroup = new THREE.Group()
-    this.viewport.scene.add(this.redSelectionGroup)
-  }
-
-  // 创建红选包围盒
-  private createRedSelectionBox(object: Object3DLike) {
-    // 如果对象没有 entityId，则不创建包围盒线框
-    if (!object.userData.entityId) {
-      return
-    }
-    let box: THREE.Box3
-    if (object instanceof PointManageWrap) {
-      box = object.createBox3()
-
-    } else if (object instanceof THREE.Object3D) {
-      box = new THREE.Box3().setFromObject(object)
-    }
-
-    const min = box.min
-    const max = box.max
-
-    const corners = [
-      new THREE.Vector3(min.x - Constract.RED_EXPAND_AMOUNT, max.y + Constract.RED_EXPAND_AMOUNT, min.z - Constract.RED_EXPAND_AMOUNT),
-      new THREE.Vector3(max.x + Constract.RED_EXPAND_AMOUNT, max.y + Constract.RED_EXPAND_AMOUNT, min.z - Constract.RED_EXPAND_AMOUNT),
-      new THREE.Vector3(max.x + Constract.RED_EXPAND_AMOUNT, max.y + Constract.RED_EXPAND_AMOUNT, max.z + Constract.RED_EXPAND_AMOUNT),
-      new THREE.Vector3(min.x - Constract.RED_EXPAND_AMOUNT, max.y + Constract.RED_EXPAND_AMOUNT, max.z + Constract.RED_EXPAND_AMOUNT)
-    ]
-
-    // 构建矩形边框（4 条边）
-    const positions = []
-    for (let i = 0; i < 4; i++) {
-      const p1 = corners[i]
-      const p2 = corners[(i + 1) % 4]
-      positions.push(p1.x, p1.y, p1.z)
-      positions.push(p2.x, p2.y, p2.z)
-    }
-
-    // 创建几何体
-    const lineGeom = new LineGeometry()
-    const vertices = new Float32Array(positions)
-    lineGeom.setPositions(vertices)
-
-    const selectionBox = new Line2(lineGeom, this.redMaterial)
-    selectionBox.computeLineDistances()
-
-    this.redSelectionGroup.add(selectionBox)
-  }
-
   // 更新选中对象的包围盒线框
   private updateSelectionBox = () => {
     this.clearSelectionBox()
@@ -263,8 +213,7 @@ export default class SelectManager {
 
     // 销毁选择工具
     this.clearSelectionBox()
-    this.disposeRect()
-    this.clearRedSelectionBoxes()
+    this.calcSelectionRectAndDispose()
   }
 
   // 清除当前选中对象的包围盒线框
@@ -278,7 +227,7 @@ export default class SelectManager {
 
   private createRectangle = () => {
     if (this.rectangle !== null) {
-      this.disposeRect()
+      this.calcSelectionRectAndDispose()
     }
     if (this.recStartPos) {
       // 创建矩形
@@ -334,7 +283,7 @@ export default class SelectManager {
 
   private onMouseMove = (event: MouseEvent) => {
     if (!this.recStartPos) {
-      this.disposeRect()
+      this.calcSelectionRectAndDispose()
     }
     // 更新矩形大小或重新生成矩形
     const position = this.viewport.getClosestIntersection(event)
@@ -344,7 +293,7 @@ export default class SelectManager {
 
   private onMouseUp = (event: MouseEvent) => {
     if (event.button !== 0) return
-    this.disposeRect()
+    this.calcSelectionRectAndDispose(event)
     const clickTime = this.clickTime
     this.clickTime = null
     if (Date.now() - clickTime < Constract.MOUSE_CLICK_DELAY) {
@@ -352,8 +301,15 @@ export default class SelectManager {
       const objects: Object3DLike[] = this.viewport.entityManager.getObjectByCanvasMouse(event)
       if (objects.length > 0 && objects[0]?.userData?.entityId && objects[0]?.userData?.createType !== 'line') {
         console.log('mouseClick', objects)
+
+        if (event.ctrlKey) {
+          // 按住 ctrl 键, 就是添加红选内容
+          this.appendOrRemoveRedSelection(objects[0]?.userData?.entityId)
+
+        } else {
           const object = objects[0]
           this.selectById(object.userData.entityId)
+        }
 
       } else {
         // 如果没有选中任何对象，清除选中状态
@@ -362,21 +318,9 @@ export default class SelectManager {
     }
   }
 
-  private disposeRect = () => {
-    if (this.rectangle !== null) {
+  private calcSelectionRectAndDispose = (evt?: MouseEvent) => {
+    if (this.rectangle !== null && evt) {
       // 查找在这个矩形内的所有有效业务对象，并将他们添加进 viewport.state.multiSelectedObjects
-      this.calcRectangleObjectToState()
-      this.viewport.scene.remove(this.rectangle)
-      this.rectangle.geometry.dispose()
-      this.rectangle = null
-    }
-    this.recStartPos = null
-    this.viewport.controls.enabled = true // 启用控制器
-  }
-
-  private calcRectangleObjectToState = () => {
-    if (!this.rectangle || !this.recStartPos) return
-
       // 获取矩形的包围盒
       const box = new THREE.Box3().setFromObject(this.rectangle)
 
@@ -385,39 +329,38 @@ export default class SelectManager {
       const startZ = box.min.z
       const endX = box.max.x
       const endZ = box.max.z
+      _.defer(() => {
+        this.calcRedSelection(startX, startZ, endX, endZ, evt.ctrlKey)
+      })
+      this.viewport.scene.remove(this.rectangle)
+      this.rectangle.geometry.dispose()
+      this.rectangle = null
+    }
+    this.recStartPos = null
+    this.viewport.controls.enabled = true // 启用控制器
+  }
 
-    // 查找所有在矩形内的对象
-    const ids = this.viewport.itemFindManager.getItemsByRect(startX, startZ, endX, endZ)
-
-    // 清空之前的多选对象
-    this.viewport.state.multiSelectedObjects = []
-
-    // 遍历找到的对象，添加到多选对象中
-    const multiSelectedObjects = []
-    const multiSelectedItems = []
-    const multiSelectedEntityIds = []
-    for (const id of ids) {
-      const object = this.viewport.entityManager.findObjectById(id)
-      if (object.userData.entityId && object.userData.t) {
-        const item = this.viewport.entityManager.findItemById(object.userData.entityId)
-        if (item && item.dt.protected !== true) {
-          multiSelectedObjects.push(object)
-          multiSelectedItems.push(item)
+  private appendOrRemoveRedSelection(id: string) {
+    // 如果 id 包含在 this.viewport.state.multiSelectedEntityIds 中，则移除它, 否则 添加它
+    const multiSelectedEntityIds = this.viewport.state.multiSelectedEntityIds
+    const index = _.indexOf(multiSelectedEntityIds, id)
+    if (index > -1) {
+      // 如果已经存在，则移除
+      multiSelectedEntityIds.splice(index, 1)
+    } else {
+      // 否则添加
       multiSelectedEntityIds.push(id)
     }
-      }
+    this.multiSelectByIds(multiSelectedEntityIds)
   }
 
-    // 触发多选对象更新事件
-    this.viewport.state.multiSelectedObjects = markRaw(multiSelectedObjects)
-    this.viewport.state.multiSelectedItems = markRaw(multiSelectedItems)
-    this.viewport.state.multiSelectedEntityIds = multiSelectedEntityIds
-    EventBus.dispatch('multiSelectedObjectsChanged', {
-      viewport: markRaw(this.viewport),
-      multiSelectedObjects: this.viewport.state.multiSelectedObjects,
-      multiSelectedItems: this.viewport.state.multiSelectedItems,
-      multiSelectedEntityIds: this.viewport.state.multiSelectedEntityIds
-    })
+  private calcRedSelection = (startX, startZ, endX, endZ, isAppend: boolean = false) => {
+    // 查找所有在矩形内的对象
+    const ids = this.viewport.itemFindManager.getItemsByRect(startX, startZ, endX, endZ)
+
+    // 清空之前的多选对象
+    const idsOrigin = isAppend ? this.viewport.state.multiSelectedEntityIds : []
+    this.multiSelectByIds(_.uniq(idsOrigin.concat(ids)))
   }
 
 }