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		[page:Loader] &rarr;

		<h1>[name]</h1>

		<p class="desc">A loader for loading an `.mtl` resource, used internally by [page:OBJLoader].<br />
		The Material Template Library format (MTL) or .MTL File Format is a companion file format to .OBJ that describes surface shading
		(material) properties of objects within one or more .OBJ files.
		</p>

		<h2>Import</h2>

		<p>
			[name] is an add-on, and must be imported explicitly.
			See [link:#manual/introduction/Installation Installation / Addons].
		</p>

		<code>
			import { MTLLoader } from 'three/addons/loaders/MTLLoader.js';
		</code>

		<h2>Constructor</h2>

		<h3>[name]( [param:LoadingManager loadingManager] )</h3>
		<p>
			[page:LoadingManager loadingManager] — LoadingManager to use. Defaults to [page:DefaultLoadingManager DefaultLoadingManager]<br />
		</p>
		<p>
			Creates a new [name].
		</p>

		<h2>Properties</h2>
		<p>See the base [page:Loader] class for common properties.</p>

		<h2>Methods</h2>
		<p>See the base [page:Loader] class for common methods.</p>

		<h3>[method:undefined load]( [param:String url], [param:Function onLoad], [param:Function onProgress], [param:Function onError] )</h3>
		<p>
			[page:String url] — A string containing the path/URL of the `.mtl` file.<br />
			[page:Function onLoad] — (optional) A function to be called after the loading is successfully completed. The function receives the loaded [page:MTLLoaderMaterialCreator MTLLoader.MaterialCreator] instance.<br />
			[page:Function onProgress] — (optional) A function to be called while the loading is in progress. The argument will be the XMLHttpRequest instance, which contains [page:Integer total] and [page:Integer loaded] bytes. If the server does not set the Content-Length header; .[page:Integer total] will be 0.<br />
			[page:Function onError] — (optional) A function to be called if an error occurs during loading. The function receives the error as an argument.<br />
		</p>
		<p>
			Begin loading from url and return the loaded material.
		</p>

		<h3>[method:this setMaterialOptions]( [param:Object options] )</h3>
		<p>
			[page:Object options] — required
			<ul>
				<li>side: Which side to apply the material. THREE.FrontSide (default), THREE.BackSide, THREE.DoubleSide</li>
				<li>wrap: What type of wrapping to apply for textures. THREE.RepeatWrapping (default), THREE.ClampToEdgeWrapping, THREE.MirroredRepeatWrapping</li>
				<li>normalizeRGB: RGBs need to be normalized to 0-1 from 0-255. Default: false, assumed to be already normalized</li>
				<li>ignoreZeroRGBs: Ignore values of RGBs (Ka,Kd,Ks) that are all 0's. Default: false</li>
				<li>invertTrProperty: Use values 1 of Tr field for fully opaque. This option is useful for obj exported from 3ds MAX, vcglib or meshlab. Default: false</li>
			</ul>
		</p>
		<p>
			Set of options on how to construct the materials
		</p>


		<h3>[method:MTLLoaderMaterialCreator parse]( [param:String text, param:String path] )</h3>
		<p>
			[page:String text] — The textual `mtl` structure to parse.
			[page:String path] — The path to the MTL file.
		</p>
		<p>
			Parse a `mtl` text structure and return a [page:MTLLoaderMaterialCreator MTLLoader.MaterialCreator] instance.<br />
		</p>


		<h2>Source</h2>

		<p>
			[link:https://github.com/mrdoob/three.js/blob/master/examples/jsm/loaders/[name].js examples/jsm/loaders/[name].js]
		</p>
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