Unity的mesh的indices报错
今天构造Unity的Mesh的索引数组时遇到了个小问题,在此记录一下,报错如下:
Failed setting triangles. Some indices are referencing out of bounds vertices. IndexCount: 9240, VertexCount: 9240
UnityEngine.Mesh:set_triangles(Int32[])
LoadPolyMeshByTile:OnDrawGizmosSelected() (at Assets/LoadPolyMeshByTile.cs:695)
UnityEngine.GUIUtility:ProcessEvent(Int32, IntPtr)
mesh.Clear();
mesh.vertices = vertices.ToArray();
mesh.triangles = tris.ToArray();//这一行报错
出现这个问题,需要检查以下两点:
- tris内存放的组成三角形的点的索引,所以元素个数必须是三的倍数。
- tris里每一个元素记录的是vertices里的点的索引值,所以都必须在范围[0,vertices.Length)范围之间
出现这种错误一般都是第二种,这个时候就去检查tris里面的元素值,取其最大值m,若m >= vertices.Length
,证明确实是索引值越界了