修复:框选时,如果选择框的长或宽等于0,那么退化成线选择,避免选择错误

src/Editor/SelectControls.ts

@@ -15,6 +15,7 @@ import { PointPickOneObject } from './PointPick';
 import { SelectSetBase } from './SelectBase';
 import { SelectBox, SelectType } from './SelectBox';
 import { Filter } from './SelectFilter';
+import { SelectLine } from './SelectLine';
 import { SelectPick } from './SelectPick';
 import { SelectSet } from './SelectSet';
 
@@ -185,7 +186,17 @@ export class SelectControls implements EditorService
 
     SelectByCss()
     {
+        let isLineSelect = this._SelectCss.start.x === this._SelectCss.end.x || this._SelectCss.start.y === this._SelectCss.end.y;
+
         let iViewer: IViewer = this._Viewer.GetIViewer([this._SelectCss.start, this._SelectCss.end]);
+
+        if (isLineSelect)
+        {
+            let selectLine = new SelectLine(iViewer, this._SelectCss.start, this._SelectCss.end);
+            selectLine.Select(undefined, this.Filter);
+            return selectLine;
+        }
+
         let selectBox = new SelectBox(iViewer, this._SelectCss.start, this._SelectCss.end);
         if (this._SelectType !== SelectType.None)
             selectBox._SelectType = this._SelectType;

src/Editor/SelectLine.ts

@@ -1,20 +1,16 @@
-import { Frustum, Matrix4, Object3D, OrthographicCamera, PerspectiveCamera, Vector2, Vector3 } from 'three';
-import { PreViewer } from '../GraphicsSystem/PreViewer';
-import { Viewer } from '../GraphicsSystem/Viewer';
-import { SelectSetBase } from './SelectBase';
+import { Matrix4, Object3D, OrthographicCamera, PerspectiveCamera, Vector2, Vector3 } from 'three';
 import { doIntersect } from "../Geometry/DoIntersect";
+import { IViewer } from '../GraphicsSystem/IView';
+import { SelectSetBase } from './SelectBase';
 
 export class SelectLine extends SelectSetBase
 {
-    private m_StartPt: Vector2;
-    private m_EndPt: Vector2;
-    _Frustum: Frustum = new Frustum();
-
-    constructor(view: Viewer | PreViewer, startP: Vector2, endP: Vector2)
+    constructor(view: IViewer,
+        private _StartPt: Vector2,
+        private _EndPt: Vector2,
+    )
     {
         super(view);
-        this.m_StartPt = startP;
-        this.m_EndPt = endP;
 
         this._bIsPerCamera = view.Camera instanceof PerspectiveCamera;
         let camera = this._Viewer.Camera;
@@ -29,7 +25,7 @@ export class SelectLine extends SelectSetBase
 
     IntersectLine(p1: Vector3, p2: Vector3): boolean
     {
-        return doIntersect(p1, p2, this.m_StartPt, this.m_EndPt);
+        return doIntersect(p1, p2, this._StartPt, this._EndPt);
     }
 
     CheckSelect(obj: Object3D): boolean