Unity中的大型非分割網格的運行時負載

Question

我有一個網格是從一個房間的點雲掃描生成的，這取決於房間的大小，頂點的數量有時可能會大於單位的最大支持的最大值（650000間）。

我可以將這些網格導入到編輯器中，並且unity將它們自動分解爲子網格。有沒有辦法在運行時在腳本中訪問此例程？

Answer 1

正如你所說的，網格在運行時或編輯器中不能包含超過650,000個頂點。

在運行時，應該分段生成網格。例如，給定10萬點的頂點，然後創建網格像以下：

// Your mesh data from the point cloud scan of a room 
long[] indices = ...; 
Vector3[] positions = = ...; 

// Split your mesh data into two parts: 
// one that have 60000 vertices and another that have 40000 vertices. 

// create meshes 
{ 
    Mesh mesh = new Mesh(); 
    GameObject obj = new GameObject(); 
    obj.AddComponent<MeshFilter>().sharedMesh = mesh; 
    var positions = new Vector3[60000]; 
    var indices = new int[count_of_indices];//The value of count_of_indices depends on how you split the mesh data. 

    // copy first 60000 vertices to positions and indices 

    mesh.vertices = positions; 
    mesh.triangles = indices; 
} 
{ 
    Mesh mesh = new Mesh(); 
    GameObject obj = new GameObject(); 
    obj.AddComponent<MeshFilter>().sharedMesh = mesh; 
    var positions = new Vector3[4000]; 
    var indices = new int[count_of_indices]; 

    // copy the remaining 40000 vertices to positions and indices 

    mesh.vertices = positions; 
    mesh.triangles = indices; 
}