first of all thank you for the excellent Proscene!

I'm working on a project where I would like to set my camera interactively using the mouse and then save it to disk so I can re-load it later

So far I've tried the following:

A. Serializing the camera object : Creating a child class of Camera that implements java.io.Serializable did not work. I don't want to spend too much time on this feature, so I abandoned this option.

B. Saving a few key settings of the camera to a text file (JSON format): I thought saving the orientation quaternion and the position vector and the field of view would be enough, but when I load the camera from the JSON file and plug in the orientation, position and field of view in a new camera I don't get the expected result, which is that I would see the view I had saved from.

This is how the Camera is saved to file at the moment :

A sample JSON file:

And how a Camera is loaded back from file:

1.    JSONObject json = loadJSONObject(fileName);
2.     fov = json.getFloat("fov");
3.     
4.     //Parse orientation quaternion
5.     String o =  json.getString("orientation");
6.     String[] arr = o.substring(1,o.length()-1).split(", ");
7.     orientation = new float[arr.length];
8.     int i = 0;
9.     for(String s : arr){
10.       orientation[i] = Float.parseFloat(s);
11.     }
12.     
13.     //Parse position vector
14.     o =  json.getString("position");
15.     arr = o.substring(1,o.length()-1).split(", ");
16.     println(arr);
17.     position = new float[arr.length];
18.     i = 0;
19.     
20.     for(String s : arr){
21.       position[i] = Float.parseFloat(s);
22.     }
23. 
    
24.     camera = new Camera(scene);
25.     camera.setFieldOfView(fov);
26.     camera.setPosition(new PVector(position[0], position[1], position[2]) );
27.     camera.setOrientation(new Quaternion(orientation, false) );

Can you spot any other issue with this approach?

Regards.