/**
 * @author mrdoob / http://mrdoob.com/
 * @author alteredq / http://alteredqualia.com/
 */

THREE.Material = function () {

	this.id = THREE.Math.generateUUID();

	this.name = '';

	this.side = THREE.FrontSide;

	this.opacity = 1;
	this.transparent = false;

	this.blending = THREE.NormalBlending;

	this.blendSrc = THREE.SrcAlphaFactor;
	this.blendDst = THREE.OneMinusSrcAlphaFactor;
	this.blendEquation = THREE.AddEquation;

	this.depthTest = true;
	this.depthWrite = true;

	this.polygonOffset = false;
	this.polygonOffsetFactor = 0;
	this.polygonOffsetUnits = 0;

	this.alphaTest = 0;

	this.overdraw = 0; // Overdrawn pixels (typically between 0 and 1) for fixing antialiasing gaps in CanvasRenderer

	this.visible = true;

	this.needsUpdate = true;

};

THREE.Material.prototype = {

	constructor: THREE.Material,

	addEventListener: THREE.EventDispatcher.prototype.addEventListener,
	hasEventListener: THREE.EventDispatcher.prototype.hasEventListener,
	removeEventListener: THREE.EventDispatcher.prototype.removeEventListener,
	dispatchEvent: THREE.EventDispatcher.prototype.dispatchEvent,

	setValues: function ( values ) {

		if ( values === undefined ) return;

		for ( var key in values ) {

			var newValue = values[ key ];

			if ( newValue === undefined ) {

				console.warn( 'THREE.Material: \'' + key + '\' parameter is undefined.' );
				continue;

			}

			if ( key in this ) {

				var currentValue = this[ key ];

				if ( currentValue instanceof THREE.Color ) {

					currentValue.set( newValue );

				} else if ( currentValue instanceof THREE.Vector3 && newValue instanceof THREE.Vector3 ) {

					currentValue.copy( newValue );

				} else if ( key == 'overdraw') {

					// ensure overdraw is backwards-compatable with legacy boolean type
					this[ key ] = Number(newValue);

				} else {

					this[ key ] = newValue;

				}

			}

		}

	},

	clone: function ( material ) {

		if ( material === undefined ) material = new THREE.Material();

		material.name = this.name;

		material.side = this.side;

		material.opacity = this.opacity;
		material.transparent = this.transparent;

		material.blending = this.blending;

		material.blendSrc = this.blendSrc;
		material.blendDst = this.blendDst;
		material.blendEquation = this.blendEquation;

		material.depthTest = this.depthTest;
		material.depthWrite = this.depthWrite;

		material.polygonOffset = this.polygonOffset;
		material.polygonOffsetFactor = this.polygonOffsetFactor;
		material.polygonOffsetUnits = this.polygonOffsetUnits;

		material.alphaTest = this.alphaTest;

		material.overdraw = this.overdraw;

		material.visible = this.visible;

		return material;

	},

	dispose: function () {

		this.dispatchEvent( { type: 'dispose' } );

	}

};