function (bBox) {
        var size = Math.max(bBox[3], bBox[4], bBox[5]);
        var ratio = Math.max(viewer._width, viewer._height) / Math.min(viewer._width, viewer._height);
        viewer._distance = size / Math.tan(viewer.perspectiveCamera.fov * Math.PI / 180.0) * ratio * 1.0;
    }
function (bBox) {
        var size = Math.max(bBox[3], bBox[4], bBox[5]);
        var ratio = Math.max(viewer._width, viewer._height) / Math.min(viewer._width, viewer._height);
        viewer._distance = size / Math.tan(viewer.perspectiveCamera.fov * Math.PI / 180.0) * ratio * 1.0;
    }
function ( bBox ) { var size = Math . max ( bBox [ 3 ] , bBox [ 4 ] , bBox [ 5 ] ) ; var ratio = Math . max ( viewer . _width , viewer . _height ) / Math . min ( viewer . _width , viewer . _height ) ; viewer . _distance = size / Math . tan ( viewer . perspectiveCamera . fov * Math . PI / 180.0 ) * ratio * 1.0 ; }
helper function for setting of the distance based on camera field of view and size of the product's bounding box
helper function for setting of the distance based on camera field of view and size of the product s bounding box