69 lines
2.0 KiB
C#
69 lines
2.0 KiB
C#
using System;
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using UnityEditor;
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using UnityEngine;
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// 创建正六边形网格的脚本
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public class HexagonMesh : MonoBehaviour
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{
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public float radius = 1f; // 六边形的边长
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public float offset = 30f; // 30f or 0f
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void Start()
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{
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RefreshMesh(offset);
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}
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void RefreshMesh(float offset)
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{
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Mesh mesh = new Mesh();
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Vector3[] vertices = new Vector3[7];
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int[] triangles = new int[18];
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// 计算六个顶点
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for (int i = 0; i < 6; i++)
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{
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float angle = Mathf.Deg2Rad * (60 * i) + offset;
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vertices[i] = new Vector3(radius * Mathf.Cos(angle), radius * Mathf.Sin(angle), 0);
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}
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vertices[6] = Vector3.zero; // 六边形的中心点
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// 设置三角形的索引
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for (int i = 0; i < 6; i++)
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{
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triangles[i * 3] = 6; // 中心点
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triangles[i * 3 + 1] = i; // 当前顶点
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triangles[i * 3 + 2] = (i + 1) % 6; // 下一个顶点
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}
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mesh.vertices = vertices;
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mesh.triangles = triangles;
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mesh.RecalculateNormals();
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mesh.RecalculateBounds();
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MeshFilter meshFilter = gameObject.AddComponent<MeshFilter>();
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meshFilter.mesh = mesh;
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var meshRenderer = gameObject.AddComponent<MeshRenderer>();
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meshRenderer.material = new Material(Shader.Find("Standard"));
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}
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void OnDrawGizmos()
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{
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Gizmos.color = Color.green;
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Vector3[] vertices = new Vector3[6];
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for (int i = 0; i < 6; i++)
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{
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float angle = Mathf.Deg2Rad * (60 * i);
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vertices[i] = transform.position + new Vector3(Mathf.Cos(angle) * radius, Mathf.Sin(angle) * radius, 0);
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}
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// 绘制六边形边缘
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for (int i = 0; i < 6; i++)
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{
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Gizmos.DrawLine(vertices[i], vertices[(i + 1) % 6]);
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Handles.color = Color.red;
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Handles.Label(vertices[i], vertices[(i + 1) % 6].ToString());
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}
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}
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} |