Generic aspect ratio for both mobile and desktop

[nicolocarpignoli]

We should make it work with every aspect ratio of camera/screen, so not always 4:3. This will make possible to use the NFT with fullscreen camera on mobile and desktop devices.

[albjeremias]

are there more insight into this issue? why the 4:3 ?
Is it because of the camera parameters as mentioned by @misdake ?

I keep the canvas passed into ar.process to have aspect ratio 4:3 to fit the camera params. This canvas is called "canvas_process" . (You can see a lot of my code is just calculating width/height.)

[misdake]

@albjeremias (At least for my demos) 4:3 because I used a fixed "camera_para-iPhone 5 rear 640x480 1.0m.dat" for camera params and didn't have time to implement a matching.
I think 3:4 is doable with that camera params. rotate video feed 90 degrees when drawing onto canvas_process and rotate the perspective matrix back.

[misdake]

Take a look at images here.
In CSS terms, I did an "object-fit: contain;" to fit video in canvas_process.
To solve this aspect ratio issue, maybe do this again, do an "object-fit: cover;" to cover fullscreen canvas with video, and use another pair of ratioW/H to fix the perspective matrix.