build/modelscript.umd.js
function(vector) {
            	var angle = this.angleFrom(vector);
            	return (angle === null) ? null : (Math.abs(angle - Math.PI) <= sylvester.precision);
                }
function(vector) {
            	var angle = this.angleFrom(vector);
            	return (angle === null) ? null : (Math.abs(angle - Math.PI) <= sylvester.precision);
                }
function ( vector ) { var angle = this . angleFrom ( vector ) ; return ( angle === null ) ? null : ( Math . abs ( angle - Math . PI ) <= sylvester . precision ) ; }
Returns true iff the vector is antiparallel to the argument
Returns true iff the vector is antiparallel to the argument