Modify the UV of each surface of the Cube (18 of Unity3D development) and cubeunity3d respectively.

Modify the UV of each surface of the Cube (18 of Unity3D development) and cubeunity3d respectively.

Monkey original, reprinted. Reprinted Please note: Reprinted from the Cocos2Der-CSDN, thank you!
Address: http://blog.csdn.net/cocos2der/article/details/46611169

In today's project, you need to modify the UV of each surface in a Cube, that is, there are multiple rectangular textures in the texture, and the program needs to read a part of the texture and assign it to each surface of the Cube.

This is already implemented.

CustomUVS. cs

using UnityEngine;using System.Collections;[ExecuteInEditMode]public class CustomUVS : MonoBehaviour {    public Vector2 topPoint;    public Vector2 bottomPoint;    public Vector2 leftPoint;    public Vector2 rightPoint;    public Vector2 frontPoint;    public Vector2 backPoint;    private Mesh m_mesh;    public enum CubeFaceType    {        Top,        Bottom,        Left,        Right,        Front,        Back    };    // Use this for initialization    void Start () {        MeshFilter meshFilter = GetComponent<MeshFilter>();        if (meshFilter == null) {            Debug.LogError("Script needs MeshFilter component");            return;        }#if UNITY_EDITOR        Mesh meshCopy = Mesh.Instantiate(meshFilter.sharedMesh) as Mesh;    // Make a deep copy        meshCopy.name = "Cube";        m_mesh = meshFilter.mesh = meshCopy;                                // Assign the copy to the meshes#else        m_mesh = meshFilter.mesh;#endif        if (m_mesh == null || m_mesh.uv.Length != 24) {            Debug.LogError("Script needs to be attached to built-in cube");            return;        }        UpdateMeshUVS();    }    // Update is called once per frame    void Update ()     {#if UNITY_EDITOR        UpdateMeshUVS();#endif    }    void UpdateMeshUVS()    {        Vector2[] uvs = m_mesh.uv;        // Front        SetFaceTexture(CubeFaceType.Front, uvs);        // Top        SetFaceTexture(CubeFaceType.Top, uvs);        // Back        SetFaceTexture(CubeFaceType.Back, uvs);        // Bottom        SetFaceTexture(CubeFaceType.Bottom, uvs);        // Left        SetFaceTexture(CubeFaceType.Left, uvs);          // Right                SetFaceTexture(CubeFaceType.Right, uvs);           m_mesh.uv = uvs;    }    Vector2[] GetUVS(float originX, float originY)    {        Vector2[] uvs = new Vector2[4];        uvs[0] = new Vector2(originX / 3.0f, originY / 3.0f);        uvs[1] = new Vector2((originX + 1) / 3.0f, originY / 3.0f);        uvs[2] = new Vector2(originX / 3.0f, (originY + 1) / 3.0f);        uvs[3] = new Vector2((originX + 1) / 3.0f, (originY + 1) / 3.0f);        return uvs;    }    void SetFaceTexture(CubeFaceType faceType, Vector2[] uvs)    {        if (faceType == CubeFaceType.Front) {            Vector2[] newUVS = GetUVS(frontPoint.x, frontPoint.y);            uvs[0]  = newUVS[0];             uvs[1]  = newUVS[1];            uvs[2]  = newUVS[2];            uvs[3]  = newUVS[3];        }else if (faceType == CubeFaceType.Back) {            Vector2[] newUVS = GetUVS(backPoint.x, backPoint.y);            uvs[10] = newUVS[0];             uvs[11] = newUVS[1];             uvs[6]  = newUVS[2];             uvs[7]  = newUVS[3];         }else if (faceType == CubeFaceType.Top) {            Vector2[] newUVS = GetUVS(topPoint.x, topPoint.y);            uvs[8] = newUVS[0];             uvs[9] = newUVS[1];             uvs[4]  = newUVS[2];             uvs[5]  = newUVS[3];         }else if (faceType == CubeFaceType.Bottom) {            Vector2[] newUVS = GetUVS(bottomPoint.x, bottomPoint.y);            uvs[12] = newUVS[0];             uvs[14] = newUVS[1];             uvs[15]  = newUVS[2];             uvs[13]  = newUVS[3];         }else if (faceType == CubeFaceType.Left) {            Vector2[] newUVS = GetUVS(leftPoint.x, leftPoint.y);            uvs[16] = newUVS[0];             uvs[18] = newUVS[1];             uvs[19]  = newUVS[2];             uvs[17]  = newUVS[3];         }else if (faceType == CubeFaceType.Right) {            Vector2[] newUVS = GetUVS(rightPoint.x, rightPoint.y);            uvs[20] = newUVS[0];             uvs[22] = newUVS[1];             uvs[23]  = newUVS[2];             uvs[21]  = newUVS[3];         }    }}

Note: because the image is 3x3, the area is intercepted by 3 equal points.

Actual Effect