Creates 6 cameras that render to a [page:WebGLCubeRenderTarget].
		// Create cube render target
		const cubeRenderTarget = new THREE.WebGLCubeRenderTarget( 128, { generateMipmaps: true, minFilter: THREE.LinearMipmapLinearFilter } );
		// Create cube camera
		const cubeCamera = new THREE.CubeCamera( 1, 100000, cubeRenderTarget );
		scene.add( cubeCamera );
		// Create car
		const chromeMaterial = new THREE.MeshLambertMaterial( { color: 0xffffff, envMap: cubeRenderTarget.texture } );
		const car = new THREE.Mesh( carGeometry, chromeMaterial );
		scene.add( car );
		// Update the render target cube
		car.visible = false;
		cubeCamera.position.copy( car.position );
		cubeCamera.update( renderer, scene );
		// Render the scene
		car.visible = true;
		renderer.render( scene, camera );
		
		[example:webgl_materials_cubemap_dynamic materials / cubemap / dynamic ]
		near -- The near clipping distance. 
		far -- The far clipping distance. 
		renderTarget -- The destination cube render target.
		
Constructs a CubeCamera that contains 6 [page:PerspectiveCamera PerspectiveCameras] that render to a [page:WebGLCubeRenderTarget].
See the base [page:Object3D] class for common properties.
The destination cube render target.
See the base [page:Object3D] class for common methods.
		renderer -- The current WebGL renderer 
		scene -- The current scene
		
Call this to update the [page:CubeCamera.renderTarget renderTarget].
[link:https://github.com/mrdoob/three.js/blob/master/src/[path].js src/[path].js]