diff --git a/ShadowEditor.Web/src/controls/OrthographicCameraControls.js b/ShadowEditor.Web/src/controls/OrthographicCameraControls.js
index 048b2d5e..cfb92c98 100644
--- a/ShadowEditor.Web/src/controls/OrthographicCameraControls.js
+++ b/ShadowEditor.Web/src/controls/OrthographicCameraControls.js
@@ -78,22 +78,22 @@ OrthographicCameraControls.prototype.onMouseUp = function (event) {
 };
 
 OrthographicCameraControls.prototype.onMouseWheel = function (event) {
-    const delta = event.wheelDelta / 1000;
+    const delta = -event.wheelDelta / 1000;
 
     let camera = this.camera;
 
     let width = this.domElement.clientWidth;
     let height = this.domElement.clientHeight;
 
-    let pointerX = this.camera.left + (this.camera.right - this.camera.left) * event.offsetX / width;
-    let pointerY = this.camera.top - (this.camera.top - this.camera.bottom) * event.offsetY / height;
+    let pointerX = camera.left + (camera.right - camera.left) * event.offsetX / width;
+    let pointerY = camera.top - (camera.top - camera.bottom) * event.offsetY / height;
 
-    this.camera.left = this.camera.left - Math.abs(pointerX - this.camera.left) * delta;
-    this.camera.right = this.camera.right + Math.abs(this.camera.right - pointerX) * delta;
-    this.camera.top = this.camera.top + Math.abs(this.camera.top - pointerY) * delta;
-    this.camera.bottom = this.camera.bottom - Math.abs(pointerY - this.camera.bottom) * delta;
+    camera.left = camera.left - Math.abs(pointerX - camera.left) * delta;
+    camera.right = camera.right + Math.abs(camera.right - pointerX) * delta;
+    camera.top = camera.top + Math.abs(camera.top - pointerY) * delta;
+    camera.bottom = camera.bottom - Math.abs(pointerY - camera.bottom) * delta;
 
-    this.camera.updateProjectionMatrix();
+    camera.updateProjectionMatrix();
 };
 
 export default OrthographicCameraControls;
\ No newline at end of file
diff --git a/ShadowEditor.Web/src/event/ResizeEvent.js b/ShadowEditor.Web/src/event/ResizeEvent.js
index 5c6dc192..10136b3f 100644
--- a/ShadowEditor.Web/src/event/ResizeEvent.js
+++ b/ShadowEditor.Web/src/event/ResizeEvent.js
@@ -21,20 +21,43 @@ ResizeEvent.prototype.stop = function () {
 };
 
 ResizeEvent.prototype.onResize = function () {
-    var editor = app.editor;
-    var viewport = app.viewport;
-    var camera = editor.camera;
-    var renderer = editor.renderer;
+    let { editor, viewport } = app;
+    let { DEFAULT_CAMERA, camera, orthCamera, renderer } = editor;
 
-    var width = viewport.clientWidth;
-    var height = viewport.clientHeight;
+    const width = viewport.clientWidth;
+    const height = viewport.clientHeight;
 
-    editor.DEFAULT_CAMERA.aspect = width / height;
-    editor.DEFAULT_CAMERA.updateProjectionMatrix();
+    if (this.width === undefined || this.height === undefined) {
+        this.width = width;
+        this.height = height;
+    }
+
+    DEFAULT_CAMERA.aspect = width / height;
+    DEFAULT_CAMERA.updateProjectionMatrix();
 
     camera.aspect = width / height;
     camera.updateProjectionMatrix();
 
+    if (width !== this.width) {
+        let dwidth = (orthCamera.right - orthCamera.left) * (width / this.width - 1);
+
+        orthCamera.left -= dwidth / 2;
+        orthCamera.right += dwidth / 2;
+
+        this.width = width;
+    }
+
+    if (height !== this.height) {
+        let dheight = (orthCamera.top - orthCamera.bottom) * (height / this.height - 1);
+
+        orthCamera.top += dheight / 2;
+        orthCamera.bottom -= dheight / 2;
+
+        this.height = height;
+    }
+
+    orthCamera.updateProjectionMatrix();
+
     renderer.setSize(width, height);
 };
 
diff --git a/ShadowEditor.Web/src/event/ViewEvent.js b/ShadowEditor.Web/src/event/ViewEvent.js
index 7f044703..0ba8d71a 100644
--- a/ShadowEditor.Web/src/event/ViewEvent.js
+++ b/ShadowEditor.Web/src/event/ViewEvent.js
@@ -43,6 +43,8 @@ ViewEvent.prototype.changeView = function (view) {
 
     let camera = app.editor.orthCamera;
 
+    // TODO: 根据场景大小确定初始位置
+
     switch (view) {
         case 'front':
             camera.position.set(100, 0, 0);