build/modelscript.umd.js
function(plane) {
                var theta = this.normal.angleFrom(plane.normal);
                return (Math.abs(Math.PI/2 - theta) <= sylvester.precision);
              }
function(plane) {
                var theta = this.normal.angleFrom(plane.normal);
                return (Math.abs(Math.PI/2 - theta) <= sylvester.precision);
              }
function ( plane ) { var theta = this . normal . angleFrom ( plane . normal ) ; return ( Math . abs ( Math . PI / 2 - theta ) <= sylvester . precision ) ; }
Returns true iff the receiver is perpendicular to the argument
Returns true iff the receiver is perpendicular to the argument