javascript
/
three.js
镜像自地址 https://github.com/tazdij/three.js.git


			
				
					
						
						
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		[page:Texture] &rarr;

		<h1>[name]</h1>

		<p class="desc">
			Creates a three-dimensional texture from raw data, with parameters to divide it into width, height, and depth. 
			This type of texture can only be used with a WebGL 2 rendering context.
		</p>

		<h2>Constructor</h2>

		<h3>[name]( [param:TypedArray data], [param:Number width], [param:Number height], [param:Number depth] )</h3>
		<p>
			[page:Object data] -- [link:https://developer.mozilla.org/en-US/docs/Web/API/ArrayBufferView ArrayBufferView] of the texture.<br />

			[page:Number width] -- width of the texture.<br />

			[page:Number height] -- height of the texture.<br />

			[page:Number depth] -- depth of the texture.
		</p>

		<h2>Code Example</h2>

		<p>This creates a [name] with repeating data, 0 to 255</p>

		<code>
		// create a buffer with some data

		const sizeX = 64;
		const sizeY = 64;
		const sizeZ = 64;

		const data = new Uint8Array( sizeX * sizeY * sizeZ );

		let i = 0;

		for ( let z = 0; z < sizeZ; z ++ ) {

			for ( let y = 0; y < sizeY; y ++ ) {

				for ( let x = 0; x < sizeX; x ++ ) {

					data[ i ] = i % 256;

					i ++;

				}

			}

		}

		// use the buffer to create the texture

		const texture = new THREE.Data3DTexture( data, sizeX, sizeY, sizeZ );
		texture.needsUpdate = true;
		</code>

		<h2>Examples</h2>

		<p>
			[example:webgl2_materials_texture3d WebGL2 / materials / texture3d]<br />
			[example:webgl2_materials_texture3d_partialupdate WebGL2 / materials / texture3d / partialupdate]<br />
			[example:webgl2_volume_cloud WebGL2 / volume / cloud]<br />
			[example:webgl2_volume_perlin WebGL2 / volume / perlin]
		</p>

		<h2>Properties</h2>

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

		<h3>[property:Boolean flipY]</h3>
		<p>
			Whether the texture is flipped along the Y axis when uploaded to the GPU. Default is `false`.
		</p>
	
		<h3>[property:Boolean generateMipmaps]</h3>
		<p>
			Whether to generate mipmaps (if possible) for the texture. Default is `false`.
		</p>

		<h3>[property:Image image]</h3>
		<p>
			Overridden with a record type holding data, width and height and depth.
		</p>

		<h3>[property:Boolean isData3DTexture]</h3>
		<p>
			Read-only flag to check if a given object is of type [name].
		</p>

		<h3>[property:number magFilter]</h3>
		<p>
			How the texture is sampled when a texel covers more than one pixel. The default is
		 	[page:Textures THREE.NearestFilter], which uses the value of the closest texel.<br /><br />
		 
			See the [page:Textures texture constants] page for details.
		</p>

		<h3>[property:number minFilter]</h3>
		<p>
			How the texture is sampled when a texel covers less than one pixel. The default is
			[page:Textures THREE.NearestFilter], which uses the value of the closest texel.<br /><br />

			See the [page:Textures texture constants] page for details.
		</p>

		<h3>[property:number unpackAlignment]</h3>
		<p>
			1 by default. Specifies the alignment requirements for the start of each pixel row in memory.
			The allowable values are 1 (byte-alignment), 2 (rows aligned to even-numbered bytes),
			4 (word-alignment), and 8 (rows start on double-word boundaries).
			See [link:https://registry.khronos.org/OpenGL-Refpages/es3.0/html/glPixelStorei.xhtml glPixelStorei]
			for more information.
		</p>

		<h3>[property:number wrapR]</h3>
		<p>
			This defines how the texture is wrapped in the depth direction.<br />
			The default is [page:Textures THREE.ClampToEdgeWrapping], where the edge is clamped to the outer edge texels.
			The other two choices are [page:Textures THREE.RepeatWrapping] and [page:Textures THREE.MirroredRepeatWrapping].
			See the [page:Textures texture constants] page for details.
		</p>

		<h2>Methods</h2>

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

		<h2>Source</h2>

		<p>
			[link:https://github.com/mrdoob/three.js/blob/master/src/[path].js src/[path].js]
		</p>
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