three.js/examples/js/geometries/BoxLineGeometry.js

( function () {

	var BoxLineGeometry = function ( width, height, depth, widthSegments, heightSegments, depthSegments ) {

		THREE.BufferGeometry.call( this );
		width = width || 1;
		height = height || 1;
		depth = depth || 1;
		widthSegments = Math.floor( widthSegments ) || 1;
		heightSegments = Math.floor( heightSegments ) || 1;
		depthSegments = Math.floor( depthSegments ) || 1;
		var widthHalf = width / 2;
		var heightHalf = height / 2;
		var depthHalf = depth / 2;
		var segmentWidth = width / widthSegments;
		var segmentHeight = height / heightSegments;
		var segmentDepth = depth / depthSegments;
		var vertices = [];
		var x = - widthHalf,
			y = - heightHalf,
			z = - depthHalf;

		for ( var i = 0; i <= widthSegments; i ++ ) {

			vertices.push( x, - heightHalf, - depthHalf, x, heightHalf, - depthHalf );
			vertices.push( x, heightHalf, - depthHalf, x, heightHalf, depthHalf );
			vertices.push( x, heightHalf, depthHalf, x, - heightHalf, depthHalf );
			vertices.push( x, - heightHalf, depthHalf, x, - heightHalf, - depthHalf );
			x += segmentWidth;

		}

		for ( var i = 0; i <= heightSegments; i ++ ) {

			vertices.push( - widthHalf, y, - depthHalf, widthHalf, y, - depthHalf );
			vertices.push( widthHalf, y, - depthHalf, widthHalf, y, depthHalf );
			vertices.push( widthHalf, y, depthHalf, - widthHalf, y, depthHalf );
			vertices.push( - widthHalf, y, depthHalf, - widthHalf, y, - depthHalf );
			y += segmentHeight;

		}

		for ( var i = 0; i <= depthSegments; i ++ ) {

			vertices.push( - widthHalf, - heightHalf, z, - widthHalf, heightHalf, z );
			vertices.push( - widthHalf, heightHalf, z, widthHalf, heightHalf, z );
			vertices.push( widthHalf, heightHalf, z, widthHalf, - heightHalf, z );
			vertices.push( widthHalf, - heightHalf, z, - widthHalf, - heightHalf, z );
			z += segmentDepth;

		}

		this.setAttribute( 'position', new THREE.Float32BufferAttribute( vertices, 3 ) );

	};

	BoxLineGeometry.prototype = Object.create( THREE.BufferGeometry.prototype );
	BoxLineGeometry.prototype.constructor = BoxLineGeometry;

	THREE.BoxLineGeometry = BoxLineGeometry;

} )();