Fix orthocam to perspcam bug

Author: Léna Voinchet

js/UI/Popup.js

@@ -164,12 +164,14 @@ class Popup{
                         break;
                     case "hand-tracking":
                         sceneManager.heightDetectedObservable.set(0.25)
+                        sceneManager.sceneElevation = 0.7;
                         break;
                     case "human-tracking":
                     default:
                         sceneManager.heightDetectedObservable.set(1.2)
                         break;
                 }
+                sceneManager.objects.removeDummies();
                 //reset warning messages on successive tabs
                 resetWarnings();
             });

js/ViewportManager.js

@@ -232,11 +232,16 @@ class ViewportManager{
             //this.activeCamera.position.set(newPos.x, newPos.y, newPos.z);
             this.placeCamera(newPos);
 
-            orbitControls.dispose();
-            orbitControls = buildOrbitControls(this);
+            // Update camera reference in the existing OrbitControls
+            orbitControls.object = this.activeCamera;
+            orbitControls.update();
 
+            // Update gizmo as well
             controlsGizmo.dispose();
-            controlsGizmo = buildGuizmo(orbitControls, this)
+            controlsGizmo = buildGuizmo(orbitControls);
+
+            orbitControls.target.set(0, 0, 0);
+
         }
 
 
@@ -252,7 +257,7 @@ class ViewportManager{
             perspCam.aspect = aspect;
             perspCam.updateProjectionMatrix();
 
-            orthoCam.left = - frustumSize/ 2.0;
+            orthoCam.left = - frustumSize / 2.0;
             orthoCam.right = frustumSize / 2.0;
             orthoCam.top = frustumSize / (2.0 * aspect);
             orthoCam.bottom = - frustumSize / (2.0 * aspect);