New One Euro Filter Feature

[kalwalt]

I started to add the OEF into the WebARKitLib core. I think that the filtering process should be done inside the worker to improve fps performances.
The C++ code is a single header library, in this way it's not necessary to add to the source and compile into libar.bc.
I'm still testing the code so things could changes frequently. Anyway if you are interested i'm using emsdk 3.1.9.
For anyone interested, you can find the original code at this address: http://www.lifl.fr/~casiez/1euro/OneEuroFilter.cc

[kalwalt]

I implemented a new filterMat2 function and testing inside the getNFTmarkerInfo function. When the marker is detected i receive an error that alpha should be in [0.0, 1.0] that sound strange because i have added the arController.setOEF(120, 0.1, 0.1, 10); inside the worker. And after the app crash...

[kalwalt]

values passed to the filter function (internally in filterMat2) are not in the range 0.0f - 1.0f that's why the error alpha should be in [0.0, 1.0]. I suppose that arUtilQuatNorm doesn't normalize in the term i aspect, so i need to normalize all the values in the correct range.

[kalwalt]

Testing without FILTERING enabled, so trans values passing only to OEF. In the log console pose matrix is a series of NaN values, that confirm values(quaternions and positions) need to be in range 0.0-1.0.

[kalwalt]

I will try to implement a simpler function with resetted time values in Rangers between 0.0 and 1.0?