Hello, i’m trying to create a hexagon with quad but the hexagon looks like this:
This is the code:
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
public class CreateQuads : MonoBehaviour {
public Material cubeMaterial;
enum Hexside {BOTTOM,BOTTOMLEFT,BOTTOMRIGHT,TOPLEFT,TOPRIGHT, TOP, FRONT,FRONTLEFT,FRONTRIGHT, BACK,LEFT,RIGHT};
void CreateQuad(Hexside side)
{
Mesh mesh = new Mesh();
mesh.name = "ScriptedMesh" + side.ToString();
Vector3[] vertices = new Vector3[4];
Vector3[] normals = new Vector3[4];
Vector2[] uvs = new Vector2[4];
int[] triangles = new int[6];
//all possible UVs
Vector2 uv00 = new Vector2( 0f, 0f );
Vector2 uv10 = new Vector2( 1f, 0f );
Vector2 uv01 = new Vector2( 0f, 1f );
Vector2 uv11 = new Vector2( 1f, 1f );
//all possible vertices
// BOTTOM
Vector3 p0 = new Vector3( 0.5f, 0.0f, -0.25f );
Vector3 p1 = new Vector3( 0.25f, -0.43f, -0.25f );
Vector3 p2 = new Vector3( -0.25f, -0.43f, -0.25f );
Vector3 p3 = new Vector3( -0.5f, 0.0f, -0.25f );
Vector3 p4 = new Vector3( -0.25f, 0.43f, -0.25f );
Vector3 p5 = new Vector3( 0.25f, 0.43f, -0.25f );
//TOP
Vector3 p6 = new Vector3( 0.5f, -0.0f, 0.25f );
Vector3 p7 = new Vector3( 0.25f, -0.43f, 0.25f );
Vector3 p8 = new Vector3( -0.25f, -0.43f, 0.25f );
Vector3 p9 = new Vector3( -0.5f, -0.0f, 0.25f );
Vector3 p10 = new Vector3( -0.25f, 0.43f, 0.25f );
Vector3 p11 = new Vector3( 0.25f, 0.43f, 0.25f );
switch(side)
{
case Hexside.BOTTOM:
vertices = new Vector3[] {p0, p1, p3, p4};
normals = new Vector3[] {Vector3.down, Vector3.down,
Vector3.down, Vector3.down};
uvs = new Vector2[] {uv11, uv01, uv00, uv10};
triangles = new int[] { 3, 1, 0, 3, 2, 1};
break;
case Hexside.BOTTOMLEFT:
vertices = new Vector3[] {p1, p2, p4, p5};
normals = new Vector3[] {Vector3.down, Vector3.down,
Vector3.down, Vector3.down};
uvs = new Vector2[] {uv11, uv01, uv00, uv10};
triangles = new int[] { 3, 1, 0, 3, 2, 1};
break;
case Hexside.BOTTOMRIGHT:
vertices = new Vector3[] {p2, p3, p5, p0};
normals = new Vector3[] {Vector3.down, Vector3.down,
Vector3.down, Vector3.down};
uvs = new Vector2[] {uv11, uv01, uv00, uv10};
triangles = new int[] { 3, 1, 0, 3, 2, 1};
break;
case Hexside.TOP:
vertices = new Vector3[] {p10,p9,p7,p6};
normals = new Vector3[] {Vector3.up, Vector3.up,
Vector3.up, Vector3.up};
uvs = new Vector2[] {uv11, uv01, uv00, uv10};
triangles = new int[] {3, 1, 0, 3, 2, 1};
break;
case Hexside.TOPLEFT:
vertices = new Vector3[] {p9,p8,p6,p11};
normals = new Vector3[] {Vector3.up, Vector3.up,
Vector3.up, Vector3.up};
uvs = new Vector2[] {uv11, uv01, uv00, uv10};
triangles = new int[] {3, 1, 0, 3, 2, 1};
break;
case Hexside.TOPRIGHT:
vertices = new Vector3[] {p8,p7,p11,p10};
normals = new Vector3[] {Vector3.up, Vector3.up,
Vector3.up, Vector3.up};
uvs = new Vector2[] {uv11, uv01, uv00, uv10};
triangles = new int[] {3, 1, 0, 3, 2, 1};
break;
case Hexside.FRONTLEFT:
vertices = new Vector3[] {p11, p6, p0, p5};
normals = new Vector3[] {Vector3.left, Vector3.left,
Vector3.left, Vector3.left};
uvs = new Vector2[] {uv11, uv01, uv00, uv10};
triangles = new int[] {3, 1, 0, 3, 2, 1};
break;
case Hexside.FRONTRIGHT:
vertices = new Vector3[] {p7, p8, p2, p1};
normals = new Vector3[] {Vector3.right, Vector3.right,
Vector3.right, Vector3.right};
uvs = new Vector2[] {uv11, uv01, uv00, uv10};
triangles = new int[] {3, 1, 0, 3, 2, 1};
break;
case Hexside.FRONT:
vertices = new Vector3[] {p6, p7, p1, p0};
normals = new Vector3[] {Vector3.forward, Vector3.forward,
Vector3.forward, Vector3.forward};
uvs = new Vector2[] {uv11, uv01, uv00, uv10};
triangles = new int[] {3, 1, 0, 3, 2, 1};
break;
case Hexside.LEFT:
vertices = new Vector3[] {p10, p11, p5, p4};
normals = new Vector3[] {Vector3.left, Vector3.left,
Vector3.left, Vector3.left};
uvs = new Vector2[] {uv11, uv01, uv00, uv10};
triangles = new int[] {3, 1, 0, 3, 2, 1};
break;
case Hexside.RIGHT:
vertices = new Vector3[] {p8, p9, p3, p2};
normals = new Vector3[] {Vector3.right, Vector3.right,
Vector3.right, Vector3.right};
uvs = new Vector2[] {uv11, uv01, uv00, uv10};
triangles = new int[] {3, 1, 0, 3, 2, 1};
break;
case Hexside.BACK:
vertices = new Vector3[] {p9, p10, p4, p3};
normals = new Vector3[] {Vector3.back, Vector3.back,
Vector3.back, Vector3.back};
uvs = new Vector2[] {uv11, uv01, uv00, uv10};
triangles = new int[] {3, 1, 0, 3, 2, 1};
break;
}
mesh.vertices = vertices;
mesh.normals = normals;
mesh.uv = uvs;
mesh.triangles = triangles;
mesh.RecalculateBounds();
GameObject quad = new GameObject("Quad");
quad.transform.parent = this.gameObject.transform;
MeshFilter meshFilter = (MeshFilter) quad.AddComponent(typeof(MeshFilter));
meshFilter.mesh = mesh;
MeshRenderer renderer = quad.AddComponent(typeof(MeshRenderer)) as MeshRenderer;
renderer.material = cubeMaterial;
}
void CombineQuads()
{
//1. Combine all children meshes
MeshFilter[] meshFilters = GetComponentsInChildren<MeshFilter>();
CombineInstance[] combine = new CombineInstance[meshFilters.Length];
int i = 0;
while (i < meshFilters.Length) {
combine[i].mesh = meshFilters[i].sharedMesh;
combine[i].transform = meshFilters[i].transform.localToWorldMatrix;
i++;
}
//2. Create a new mesh on the parent object
MeshFilter mf = (MeshFilter) this.gameObject.AddComponent(typeof(MeshFilter));
mf.mesh = new Mesh();
//3. Add combined meshes on children as the parent's mesh
mf.mesh.CombineMeshes(combine);
//4. Create a renderer for the parent
MeshRenderer renderer = this.gameObject.AddComponent(typeof(MeshRenderer)) as MeshRenderer;
renderer.material = cubeMaterial;
//5. Delete all uncombined children
foreach (Transform quad in this.transform) {
Destroy(quad.gameObject);
}
}
void CreateHex()
{
CreateQuad(Hexside.FRONT);
CreateQuad(Hexside.BACK);
CreateQuad(Hexside.TOP);
CreateQuad(Hexside.TOPLEFT);
CreateQuad(Hexside.TOPRIGHT);
CreateQuad(Hexside.BOTTOM);
CreateQuad(Hexside.BOTTOMLEFT);
CreateQuad(Hexside.BOTTOMRIGHT);
CreateQuad(Hexside.FRONTLEFT);
CreateQuad(Hexside.FRONTRIGHT);
CreateQuad(Hexside.LEFT);
CreateQuad(Hexside.RIGHT);
CombineQuads();
}
// Use this for initialization
void Start () {
CreateHex();
}
// Update is called once per frame
void Update () {
}
}
