fix #II300 相机缩放在前视图或者其他视图中异常.

src/Editor/CameraControls.ts

@@ -2,6 +2,7 @@ import * as THREE from 'three';
 
 import { KeyBoard, MouseKey } from '../Common/KeyEnum';
 import { Viewer } from '../GraphicsSystem/Viewer';
+import { Vector3 } from 'three';
 
 //控制类型
 enum CameraControlsEnabled
@@ -224,9 +225,9 @@ export class CameraControls
         event.preventDefault();
         event.stopPropagation();
 
-        let pt = new THREE.Vector3();
-        pt.set(event.offsetX, event.offsetY, 0);
-        this.m_Viewer.ScreenToWorld(pt);
+        let pt = new THREE.Vector3(event.offsetX, event.offsetY, 0);
+
+        this.m_Viewer.ScreenToWorld(pt, new Vector3().setFromMatrixColumn(this.m_Viewer.Camera.matrixWorld, 2));
         if (event.deltaY < 0)
         {
             this.m_Viewer.Zoom(0.6, pt);