ChangeCameraHelper.js

/**
 * Copyright 2020 WebAR.rocks ( https://webar.rocks )
 * 
 * WARNING: YOU SHOULD NOT MODIFY THIS FILE OTHERWISE WEBAR.ROCKS
 * WON'T BE RESPONSIBLE TO MAINTAIN AND KEEP YOUR ADDED FEATURES
 * WEBAR.ROCKS WON'T BE LIABLE FOR BREAKS IN YOUR ADDED FUNCTIONNALITIES
 *
 * WEBAR.ROCKS KEEP THE RIGHT TO WORK ON AN UNMODIFIED VERSION OF THIS SCRIPT.
 * 
 * THIS FILE IS A HELPER AND SHOULD NOT BE MODIFIED TO IMPLEMENT A SPECIFIC USER SCENARIO
 * OR TO ADDRESS A SPECIFIC USE CASE.
 */


const ChangeCameraHelper = (function(){ 
  let _spec = null;
  let _isSelfieCam = false;

  const that = {
    init: function(spec){
      _spec = Object.assign({
        canvases: [],
        isSelfieCam: true,
        DOMChangeCameraButton: null
      }, spec);

      _isSelfieCam = _spec.isSelfieCam;

      if (that.is_mobileOrTablet() && _spec.DOMChangeCameraButton){
        _spec.DOMChangeCameraButton.style.display = 'block';
      }
    },


    is_mobileOrTablet: function(){
      //return true; //kill
      let check = false;
      (function(a){if(/(android|bb\d+|meego).+mobile|avantgo|bada\/|blackberry|blazer|compal|elaine|fennec|hiptop|iemobile|ip(hone|od)|iris|kindle|lge |maemo|midp|mmp|mobile.+firefox|netfront|opera m(ob|in)i|palm( os)?|phone|p(ixi|re)\/|plucker|pocket|psp|series(4|6)0|symbian|treo|up\.(browser|link)|vodafone|wap|windows ce|xda|xiino/i.test(a)||/1207|6310|6590|3gso|4thp|50[1-6]i|770s|802s|a wa|abac|ac(er|oo|s\-)|ai(ko|rn)|al(av|ca|co)|amoi|an(ex|ny|yw)|aptu|ar(ch|go)|as(te|us)|attw|au(di|\-m|r |s )|avan|be(ck|ll|nq)|bi(lb|rd)|bl(ac|az)|br(e|v)w|bumb|bw\-(n|u)|c55\/|capi|ccwa|cdm\-|cell|chtm|cldc|cmd\-|co(mp|nd)|craw|da(it|ll|ng)|dbte|dc\-s|devi|dica|dmob|do(c|p)o|ds(12|\-d)|el(49|ai)|em(l2|ul)|er(ic|k0)|esl8|ez([4-7]0|os|wa|ze)|fetc|fly(\-|_)|g1 u|g560|gene|gf\-5|g\-mo|go(\.w|od)|gr(ad|un)|haie|hcit|hd\-(m|p|t)|hei\-|hi(pt|ta)|hp( i|ip)|hs\-c|ht(c(\-| |_|a|g|p|s|t)|tp)|hu(aw|tc)|i\-(20|go|ma)|i230|iac( |\-|\/)|ibro|idea|ig01|ikom|im1k|inno|ipaq|iris|ja(t|v)a|jbro|jemu|jigs|kddi|keji|kgt( |\/)|klon|kpt |kwc\-|kyo(c|k)|le(no|xi)|lg( g|\/(k|l|u)|50|54|\-[a-w])|libw|lynx|m1\-w|m3ga|m50\/|ma(te|ui|xo)|mc(01|21|ca)|m\-cr|me(rc|ri)|mi(o8|oa|ts)|mmef|mo(01|02|bi|de|do|t(\-| |o|v)|zz)|mt(50|p1|v )|mwbp|mywa|n10[0-2]|n20[2-3]|n30(0|2)|n50(0|2|5)|n7(0(0|1)|10)|ne((c|m)\-|on|tf|wf|wg|wt)|nok(6|i)|nzph|o2im|op(ti|wv)|oran|owg1|p800|pan(a|d|t)|pdxg|pg(13|\-([1-8]|c))|phil|pire|pl(ay|uc)|pn\-2|po(ck|rt|se)|prox|psio|pt\-g|qa\-a|qc(07|12|21|32|60|\-[2-7]|i\-)|qtek|r380|r600|raks|rim9|ro(ve|zo)|s55\/|sa(ge|ma|mm|ms|ny|va)|sc(01|h\-|oo|p\-)|sdk\/|se(c(\-|0|1)|47|mc|nd|ri)|sgh\-|shar|sie(\-|m)|sk\-0|sl(45|id)|sm(al|ar|b3|it|t5)|so(ft|ny)|sp(01|h\-|v\-|v )|sy(01|mb)|t2(18|50)|t6(00|10|18)|ta(gt|lk)|tcl\-|tdg\-|tel(i|m)|tim\-|t\-mo|to(pl|sh)|ts(70|m\-|m3|m5)|tx\-9|up(\.b|g1|si)|utst|v400|v750|veri|vi(rg|te)|vk(40|5[0-3]|\-v)|vm40|voda|vulc|vx(52|53|60|61|70|80|81|83|85|98)|w3c(\-| )|webc|whit|wi(g |nc|nw)|wmlb|wonu|x700|yas\-|your|zeto|zte\-/i.test(a.substr(0,4))) check = true;})(navigator['userAgent']||navigator['vendor']||window['opera']);
      return check;
    },


    set_mirroring: function(isMirror){
      _spec.canvases.forEach(function(canvas){
        canvas.style.transform = (isMirror) ? 'translate(-50%, 0%) rotateY(180deg)' : 'translate(-50%, 0%) rotateY(0deg)';
      });
    },


    change_camera(){
      return new Promise(function(accept, reject){
        WEBARROCKSHAND.update_videoSettings({
          facingMode: (_isSelfieCam) ? 'environment' : 'user'
        }).then(function(){
          _isSelfieCam = !_isSelfieCam;
          
          // mirror canvas using CSS in selfie cam mode:
          that.set_mirroring(_isSelfieCam);
          console.log('INFO in change_camera(): Camera flipped successfully');
          accept(_isSelfieCam);
        }).catch(function(err){
          console.log('ERROR in change_camera(): Cannot flip camera -', err);
          reject(err);
        });
      }); //end returned promise
    }
  } // end that
  return that;
})(); 


// Export ES6 module:
try {
  module.exports = ChangeCameraHelper;
} catch(e){
  console.log('ES6 Module not exported');
}