Have a website with three.js on android/ios in a mobile openFrameworks app

To be more clear:
I want to code in c++, no obj-c nor java.
I want to reuse 90% of my code for each platform.
For maximum performance, c++ for camera input, opencv to get the corners matching, then show some three.js scene with camera locked to the device using the values from the gyroscope using c++.
androidOpenCVFaceExample is a good start, I can build upon it...
I guess/hope I can make it