var s = new THREE.SplineCurve3([
    new THREE.Vector3(0, 0, 0),
    new THREE.Vector3(100, 10, 20),
    new THREE.Vector3(200, 0, 220),
    new THREE.Vector3(400, 10, 60),

     ]);

var extrudeSettings = { amount: 100, steps: 40, material: 0, extrudeMaterial: 0 , extrudePath : s };

var colorMaterials = [ new THREE.MeshPhongMaterial( { color: 0xff5500, shininess: 100 } ), new THREE.MeshPhongMaterial( { color: 0xff0000, shininess: 100 } ) ];
var imageAndColorMaterials = [ texturedMaterial, new THREE.MeshPhongMaterial( { color: 0x00aaff, shininess: 100 } ) ];

var shape1 = new THREE.Shape();
shape1.moveTo( 0, 0 );
shape1.lineTo( 10, 0 );
shape1.lineTo( 10, 3 );
shape1.lineTo( 9, 4 );

shape1.lineTo( 5, 4 );
shape1.lineTo( 5, 5 );
shape1.lineTo( 4, 5 );
shape1.lineTo( 4, 4 );
shape1.lineTo( 0, 4 );

shape1.lineTo( -4, 4 );
shape1.lineTo( -4, 5 );
shape1.lineTo( -5, 5 );
shape1.lineTo( -5, 4 );
shape1.lineTo( -9, 4 );
shape1.lineTo( -10, 3 );
shape1.lineTo( -10, 0 );

var Geometry1 = shape1.extrude( extrudeSettings );

Geometry1.materials = colorMaterials;
Geometry1.computeVertexNormals();

THREE.GeometryUtils.center( Geometry1 );

var Mesh1 = new THREE.Mesh( Geometry1, new THREE.MeshFaceMaterial() );

Mesh1.position.z = 1000;
Mesh1.position.y = -100;

parent.add ( Mesh1 );