Update app.py

app.py

@@ -704,17 +704,13 @@ async(c, o, p, d, n, m, s)=>{
         window.video = document.getElementById("depth_video").getElementsByTagName("video")[0];
         window.parallax = 0;
         window.xdir = new BABYLON.Vector3(1, 0, 0);
-        window.zdir = new BABYLON.Vector3(0, 0, 1);
         window.rdir = new BABYLON.Vector3(0, 0, 0);
-        window.fdir = new BABYLON.Vector3(0, 0, 0);
 
         document.getElementById("model3D").getElementsByTagName("canvas")[0].addEventListener('pointermove', function(evt) {
         if (md === true) {
           rdir = BABYLON.Engine.LastCreatedScene.activeCamera.getDirection(xdir);
-          fdir = BABYLON.Engine.LastCreatedScene.activeCamera.getDirection(zdir);
-          BABYLON.Engine.LastCreatedScene.activeCamera.target.x = parallax * rdir.x + fdir.x;
-          BABYLON.Engine.LastCreatedScene.activeCamera.target.y = parallax * rdir.y + fdir.y;
-          BABYLON.Engine.LastCreatedScene.activeCamera.target.z = parallax * rdir.z + fdir.z;
+          BABYLON.Engine.LastCreatedScene.activeCamera.position.x = parallax * rdir.x;
+          BABYLON.Engine.LastCreatedScene.activeCamera.position.z = parallax * rdir.z;
           
           x = parseInt(evt.clientX - evt.target.getBoundingClientRect().x);
           y = parseInt(evt.clientY - evt.target.getBoundingClientRect().y);
@@ -1301,13 +1297,11 @@ with gr.Blocks(css=css, js=js, head=head) as demo:
                 evt.initEvent(\"click\", true, false);
                 document.getElementById(\"reset_cam\").dispatchEvent(evt);
               }
-              parallax.x = this.value;
+              parallax = this.value;
               rdir = BABYLON.Engine.LastCreatedScene.activeCamera.getDirection(xdir);
-              fdir = BABYLON.Engine.LastCreatedScene.activeCamera.getDirection(zdir);
-              BABYLON.Engine.LastCreatedScene.activeCamera.target.x = parallax * rdir.x + fdir.x;
-              BABYLON.Engine.LastCreatedScene.activeCamera.target.y = parallax * rdir.y + fdir.y;
-              BABYLON.Engine.LastCreatedScene.activeCamera.target.z = parallax * rdir.z + fdir.z;
-              this.parentNode.childNodes[2].innerText = parallax.x;
+              BABYLON.Engine.LastCreatedScene.activeCamera.position.x = parallax * rdir.x;
+              BABYLON.Engine.LastCreatedScene.activeCamera.position.z = parallax * rdir.z;
+              this.parentNode.childNodes[2].innerText = parallax;
             '/> <span>0.0</span></span><br/>
             <span><label for='contrast' style='width:8em'>Contrast</label><input id='contrast' type='range' style='width:128px;height:1em;' value='1.0' min='0' max='2' step='0.001' oninput='
               if (!BABYLON.Engine.LastCreatedScene.activeCamera.metadata) {