three.js/src/materials/LineBasicMaterial.js

/**
 * @author mrdoob / http://mrdoob.com/
 * @author alteredq / http://alteredqualia.com/
 *
 * parameters = {
 *  color: <hex>,
 *  opacity: <float>,
 *
 *  blending: THREE.NormalBlending,
 *  depthTest: <bool>,
 *  depthWrite: <bool>,
 *
 *  linewidth: <float>,
 *  linecap: "round",
 *  linejoin: "round",
 *
 *  vertexColors: <bool>
 *
 *  fog: <bool>
 * }
 */

THREE.LineBasicMaterial = function ( parameters ) {

	THREE.Material.call( this );

	this.type = 'LineBasicMaterial';

	this.color = new THREE.Color( 0xffffff );

	this.linewidth = 1;
	this.linecap = 'round';
	this.linejoin = 'round';

	this.vertexColors = THREE.NoColors;

	this.fog = true;

	this.setValues( parameters );

};

THREE.LineBasicMaterial.prototype = Object.create( THREE.Material.prototype );
THREE.LineBasicMaterial.prototype.constructor = THREE.LineBasicMaterial;

THREE.LineBasicMaterial.prototype.copy = function ( source ) {

	THREE.Material.prototype.copy.call( this, source );

	this.color.copy( source.color );

	this.linewidth = source.linewidth;
	this.linecap = source.linecap;
	this.linejoin = source.linejoin;

	this.vertexColors = source.vertexColors;

	this.fog = source.fog;

	return this;

};