66 lines
2.5 KiB
C#
66 lines
2.5 KiB
C#
using UnityEngine;
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using UnityEditor;
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[ExecuteInEditMode]
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public class VoxelizationTool : MonoBehaviour
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{
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public Vector3 gridSize = new Vector3(10, 10, 10); // 体素化区域的尺寸
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public float voxelSize = 1.0f; // 每个体素的大小
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public Color gridColor = Color.cyan; // 网格颜色
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public bool showGrid = true; // 是否显示网格
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public bool onlyShowMeshVoxels = true; // 是否仅显示包含 Mesh 的体素
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private Bounds gridBounds; // 网格的总体包围盒
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private void OnDrawGizmos()
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{
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if (!showGrid) return;
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Gizmos.color = gridColor;
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// 定义整个体素网格的包围盒
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gridBounds = new Bounds(transform.position + gridSize * voxelSize / 2, gridSize * voxelSize);
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// 获取场景中的所有 MeshFilter
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MeshFilter[] meshFilters = FindObjectsOfType<MeshFilter>();
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foreach (MeshFilter meshFilter in meshFilters)
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{
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Bounds meshBounds = meshFilter.sharedMesh.bounds;
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meshBounds = TransformBounds(meshBounds, meshFilter.transform);
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// 遍历体素，检查是否与当前 Mesh 的 Bounds 相交
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for (int x = 0; x < gridSize.x; x++)
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{
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for (int y = 0; y < gridSize.y; y++)
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{
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for (int z = 0; z < gridSize.z; z++)
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{
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Vector3 voxelCenter = transform.position + new Vector3(x, y, z) * voxelSize + Vector3.one * voxelSize / 2;
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// 跳过不在包围盒内的体素
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if (!gridBounds.Contains(voxelCenter)) continue;
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// 检查体素是否与 Mesh 的 Bounds 相交
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Bounds voxelBounds = new Bounds(voxelCenter, Vector3.one * voxelSize);
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if (meshBounds.Intersects(voxelBounds))
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{
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Gizmos.DrawWireCube(voxelCenter, Vector3.one * voxelSize);
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}
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}
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}
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}
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}
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}
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/// <summary>
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/// 将本地 Bounds 转换为世界空间的 Bounds
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/// </summary>
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private Bounds TransformBounds(Bounds localBounds, Transform transform)
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{
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Vector3 worldCenter = transform.TransformPoint(localBounds.center);
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Vector3 worldExtents = Vector3.Scale(localBounds.extents, transform.lossyScale);
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return new Bounds(worldCenter, worldExtents * 2);
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}
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}
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