修复:镜像的EntityRef坐标轴显示错误的问题

src/Editor/UCSServices.ts

@@ -67,6 +67,10 @@ export class UCSServices
 
 }
 
+const TempX = new Vector3;
+const TempY = new Vector3;
+const TempZ = new Vector3;
+const TempMtx = new Matrix4;
 
 export function MatrixToPreViewMat(mtx: Matrix4, view: Viewer, obj: Object3D, displayPosition: UCSPsotion, repairPos = true)
 {
@@ -84,10 +88,15 @@ export function MatrixToPreViewMat(mtx: Matrix4, view: Viewer, obj: Object3D, di
     else
         obj.position.set(-view.Width / 2 + 180, -view.Height / 2 + 130, 0);
 
-    let tempMat = mtx.clone();
-    tempMat.multiplyMatrices(view.Camera.matrixWorldInverse, tempMat);
-    tempMat.multiplyMatrices(view.PreViewer.Camera.matrixWorld, tempMat);
-    obj.quaternion.setFromRotationMatrix(tempMat);
+    TempY.setFromMatrixColumn(mtx, 1);
+    TempZ.setFromMatrixColumn(mtx, 2);
+    TempX.crossVectors(TempY, TempZ);//因为镜像的EntityRef会导致显示错误,我们修复它的坐标系错误的问题
+
+    TempMtx.makeBasis(TempX, TempY, TempZ);
+
+    TempMtx.multiplyMatrices(view.Camera.matrixWorldInverse, TempMtx);
+    TempMtx.multiplyMatrices(view.PreViewer.Camera.matrixWorld, TempMtx);
+    obj.quaternion.setFromRotationMatrix(TempMtx);
     obj.updateMatrix();
     obj.updateMatrixWorld(true);
 }