Unity3d to achieve the effect of "Monument Valley" distorted objects

Monument Valley, example Picture:

Note that the FBX import new project File scale shrinks and needs to be scaled up by scaling Factor
Special meshfilter material is required. Download Address: Http://pan.baidu.com/s/1jIbnQfG

The code is as follows:

Using Unityengine;
Using System.Collections;
Using System;
    public class Twistscript:monobehaviour {public float twist = 1.0f;
    public float inputsensitivity = 1.5f;
    Private vector3[] basevertices;
    Private vector3[] basenormals;
       Private Vector3 New_pos;  Update is called once per frame void Update () {twist + Input.getaxis ("horizontal") * inputsensitivity
        * TIME.DELTATIME;
        Limit twist Range if (Twist <-2) {twist =-2;
        } if (Twist > 2) {twist = 2;
        Mesh mesh = getcomponent<meshfilter> (). Mesh;
        if (basevertices = = null) {basevertices = mesh.vertices;
        } if (basenormals = = null) {basenormals = mesh.normals;
        } vector3[] vertices = new vector3[basevertices.length];
        vector3[] normals = new Vector3[basenormals.length]; for (int i = 0; i < vertices. Length;i++) {Vertices[i] = Dotwist (Basevertices[i], basevertices[i].y * twist);
        Normals[i] = dotwist (Basenormals[i], basevertices[i].y * twist);
        } mesh.vertices = vertices;
        Mesh.normals = vertices; Mesh.
        Recalculatenormals (); Mesh.
    Recalculatebounds ();
        }//produces twisted private Vector3 dotwist (Vector3 pos, float t) {Float St = Mathf.sin (t);
        float ct = mathf.cos (t);
        New_pos = Vector3.zero;
        new_pos.x = pos.x * Ct-pos.z * ST;
        new_pos.z = pos.x * St + pos.z * CT;
        New_pos.y = Pos.y;
    return new_pos;
 }
}

the effect is shown in the following figure: