Question I am trying to make my procedural mesh move like a wave for a project but can't find anything online

I am trying to make my procedural mesh move like a wave for a project but can't find anything online and also don't know if it possible any help is appreciated. Thanks in advance.

Code (CSharp):

1. using System.Collections;
2. using System.Collections.Generic;
3. using UnityEngine;
4.  
5.  
6. [RequireComponent(typeof(MeshFilter))]
7. public class MeshGeneorator : MonoBehaviour
8. {
9.  
10.     Mesh mesh;
11.  
12.     Vector3[] vertices;
13.     int[] triangles;
14.     Color[] colors;
15.  
16.     public int xSize = 20;
17.     public int zSize = 20;
18.  
19.     public Gradient gradient;
20.  
21.     float minTerrainHeight;
22.     float maxTerrainHeigth;
23.  
24.  
25.  
26.     // Start is called before the first frame update
27.     void Start()
28.     {
29.         mesh = new Mesh();
30.         GetComponent<MeshFilter>().mesh = mesh;
31.  
32.         CreateShape();
33.         UpdateMesh();
34.     }
35.  
36.  
37.  
38.     void CreateShape()
39.     {
40.  
41.         vertices = new Vector3[(xSize + 1) * (zSize + 1)];
42.  
43.         for(int i = 0, z = 0; z <= zSize; z++)
44.         {
45.             for (int x = 0; x <= xSize; x++)
46.             {
47.                 float y = Mathf.PerlinNoise(x * .3f, z * .3f) * 2f;
48.                 vertices[i] = new Vector3(x, y, z);
49.  
50.                 if (y > maxTerrainHeigth)
51.                     maxTerrainHeigth = y;
52.                 if (y < minTerrainHeight)
53.                     minTerrainHeight = y;
54.  
55.                 i++;
56.             }
57.         }
58.  
59.         triangles = new int[xSize * zSize * 6];
60.  
61.         int vert = 0;
62.         int tris = 0;
63.  
64.         for (int z = 0; z < zSize; z++)
65.         {
66.             for (int x = 0; x < xSize; x++)
67.             {
68.                 triangles[tris + 0] = vert + 0;
69.                 triangles[tris + 1] = vert + xSize + 1;
70.                 triangles[tris + 2] = vert + 1;
71.                 triangles[tris + 3] = vert + 1;
72.                 triangles[tris + 4] = vert + xSize + 1;
73.                 triangles[tris + 5] = vert + xSize + 2;
74.  
75.  
76.  
77.                 vert++;
78.                 tris += 6;
79.             }
80.             vert++;
81.  
82.         }
83.  
84.         colors = new Color[vertices.Length];
85.  
86.         for (int i = 0, z = 0; z <= zSize; z++)
87.         {
88.             for (int x = 0; x <= xSize; x++)
89.             {
90.                 float height = Mathf.InverseLerp(minTerrainHeight, maxTerrainHeigth, vertices[i].y);
91.                 colors[i] = gradient.Evaluate(height);
92.                 i++;
93.             }
94.         }
95.  
96.     }
97.  
98.  
99.     void UpdateMesh()
100.     {
101.         mesh.Clear();
102.  
103.         mesh.vertices = vertices;
104.         mesh.triangles = triangles;
105.         mesh.colors = colors;
106.  
107.         mesh.RecalculateNormals();
108.     }
109.  
110.  
111.  
112.  
113.  
114. }
115.  

 

do you mean like a waving flag?
or sea surface waves?

 

like sea surface waves? I've made a terrain with a water texture if that helps

 

unity terrain object wont help there (it would be too slow to animate),
its mostly done on shaders, but check some of these resources and play with them:

tutorial & theory: https://catlikecoding.com/unity/tutorials/flow/waves/

all kind of ocean solutions,
https://github.com/JakubSzark/unity-water-shader
https://github.com/ScrambledRK/ocean-waves
https://github.com/leinlin/crest-oceanrender
https://github.com/douduck08/UnityVFX-GerstnerWave
simple shader, assign to high resolution mesh plane https://gist.github.com/unitycoder/7b501f5d6af03dbabd48c16c08767fe3

can find more seaching with: unity sea waves / unity ocean shader etc.

 

Ok thanks alot man big help!

 

show some results here once you get it working!

if its just for learning/testing, you can also modify mesh vertices from script (to animated them),
can be easier than starting to create shaders.

mesh deformation
https://answers.unity.com/questions/746673/sine-wave-mesh-deform-with-different-directions.html
https://catlikecoding.com/unity/tutorials/mesh-deformation/