I am trying to register a data/parameterhandle in C# to get access to those values. But at the moment I am quite stuck at an exception error.

 First: I would like to get the position of the camera. As I understood, the origin of the 'cameraspace' is where the user does the T-stance. So that means that the camera has a position in that space that is not (0, 0, 0). I only found "SCENE.CALIBRATION.EDITING.CameraX" (same for Y and Z) as a reference to the camera position. Isn't there a Vector3 value that defines it?

 Next to that, I am trying to get that data into C#. So I register a ParameterHandle to a value, I wait for a new frame (device.UpdateFrame(true);) and I try to get the value from the handle: handle.Value (which should be a float).

No problem while compiling, but when I execute, I get an exception error saying that

System.NullReferenceException was unhandled
  Message="Object reference not set to an instance of an object."

I have uploaded my entire code, to make it more clear: http://pastebin.com/hPmAD19B

This exception happens at line 84. So, what I conclude is that cam_x is null, but it should get values assigned by Iisu. What is going wrong? If I compare my code to the one in the Skeleton NET example, it seems the same, but it doesn't work (while the Skeleton does work)

I hope you can help me out.

Hi,

 I have taken a look at you code, and the problem is that you are trying to get value of the parameter outside of the update loop. 

Please redo your code so that all the parameters and data are  retrived in the update. That should solve the problem, if it is not let me know.

Best regards,

Zofia

And here is an update: so I have no problem getting a datahandle to update, but a parameterhandle fails to update. I think both of them have to be used in different ways, but it's not working yet...

 My matrix skills haven't been what they used to be, but most of the visualizing software that goes with Iisu can display the point where the camera is (toolbox in 3D view for example). Is it possible to get a piece of code of that?

For now I'll just hardcode some things, but I would like to get this kind of data from Iisu.

Thanks
Toon

Dear Zofia

 That is exactly what I need: MathUtils.getMatrix4Translation(mtx); returns the position of the camera as a vector 3 value. MathUtils is part of a compiled Framework library, so I can't really see how it's done, but I'll just include it in our projects.

It seems that most documentation I need, is already present on my computer. But I do have problems finding the things in need in that huge pile of information. Also, registering the handler for the transformMatrixParameter worked without any problems. I guess it was somekind of typo.

Thanks!