orx-kinect refactoring + new general orx-depth-camera

[morisil]

I changed a lot with this PR and unfortunately I couldn't keep down compatibility:

• new orx-depth-camera interface for generalized API of all the depth cameras
• 3 modes of depth measurement: RAW_NORMALIZED, METERS, RAW
• initial low level kinect shaders operating on integer values, not floating point values
• the concept of depthCamera.frameFlow: Flow<ColorBuffer> operating on drawer thread coroutines for async processing of kinect frames
• extensive set of demo programs to show possible use cases
• colormap filters externalized as mpp filters in orx-fx
• depthCamera.mirror property renamed to flipH and corresponding flipV added (I have use cases with projections calibrated over the floor level where it is very useful).

[hamoid]

Hi :) Is it expected that orx-depth-camera and orx-depth-camera-calibrator could be used independently? Or always together? Just wondering if the second could be part of the first (since it seems to be only one file) to avoid creating more orx'es than needed.

Great job, looks like very useful for all of you using depth cameras :)

[morisil]

@hamoid My intent was to make orx-depth-camera as an API independent from the implementation, therefore it's MPP module, potentially capable of supporting something like webcam from the browser with some ML depth estimation. The calibrator is dependent on orx-parameters and the logic of storing parameters between program runs, which works only on jvm, even though orx-parameters is technically MPP, but making it work in JS would require, I believe, providing some form of annotation processor, as reflection is not suppoorted. So I can see use cases of these 2 being used independently. But technically it would be possible to merge them, as orx-parameters is a MPP module, even if it's not fully implemented.

[morisil]

@hamoid , ok, just checked, not possible at the moment because orx-depth-camera-calibrator depends on :orx-jvm:orx-gui :( Once we have JS version of GUI, which I would be actually happy to have, then it can be merged.

[hamoid]

Thank you for trying! :-)