three.js/examples/models/vrml/linesTransparent.wrl

#VRML V2.0 utf8
Transform {
	translation 0 0 0
	children[
		Shape {
			appearance Appearance {
				material Material {
					emissiveColor 1 0 0
					transparency 0.8
				}
			}
			geometry IndexedLineSet {
				coord Coordinate {
					point [
						0 0 0,
						1 0 0,
						1 1 0,
						0 1 0,
						0 0 1,
						1 0 1,
						1 1 1,
						0 1 1,
						0.5 0.5 0,
						1 0.5 0.5,
						0.5 1 0.5,
						0 0.5 0.5,
						0.5 0 0.5,
						0.5 0.5 1
					]
				}
				coordIndex [
					0, 1, -1, 1, 2, -1, 2, 3, -1, 3, 0, -1,
					4, 5, -1, 5, 6, -1, 6, 7, -1, 7, 4, -1,
					0, 4, -1, 1, 5, -1, 2, 6, -1, 3, 7, -1,
					0, 2, -1, 1, 3, -1, 4, 6, -1, 5, 7, -1,
					8, 13, -1, 9, 11, -1, 10, 12, -1
				]
			}
		}
	]
}