Unity 中的动态网格计算未正确索引三角形

Question

我正在使用 Unity 构建游戏，我想生成一张方形图块的地图，我正在为其使用网格，但由于某种原因，我的网格无法正确渲染。最后一栏半是看不见的。

以下是一些图片：

Shaded view

Wireframe view

这是代码：

void GenerateMesh()
{
    mesh = GetComponent<MeshFilter>().mesh;
    mesh.Clear();

    Vector3[] vertices = new Vector3[(Map.WIDTH + 1) * (Map.HEIGHT + 1)];
    int nextIndex = 0;
    for (int x = 0; x <= Map.WIDTH; x++)
    {
        for (int y = 0; y <= Map.HEIGHT; y++)
        {
            vertices[nextIndex] = new Vector3(x * Square.SIZE, 0, y * Square.SIZE);
            nextIndex++;
        }
    }

    int[] triangles = new int[6 * Map.WIDTH * Map.HEIGHT];
    nextIndex = 0;
    for (int x = 0; x < Map.WIDTH; x++)
    {
        for (int y = 0; y < Map.HEIGHT; y++)
        {
            triangles[nextIndex] = x * Map.HEIGHT + y;
            triangles[nextIndex + 1] = x * Map.HEIGHT + y + 1;
            triangles[nextIndex + 2] = (x + 1) * Map.HEIGHT + y + 1;

            nextIndex += 3;

            triangles[nextIndex] = x * Map.HEIGHT + y;
            triangles[nextIndex + 1] = (x + 1) * Map.HEIGHT + y + 1;
            triangles[nextIndex + 2] = (x + 1) * Map.HEIGHT + y;

            nextIndex += 3;
        }
    }

    mesh.vertices = vertices;
    mesh.triangles = triangles;

}

Map.WIDTH、Map.HEIGHT和Square.SIZE是常量，它们的值为80、45、1。

提前致谢！

Answer 1

y 值的第一个内部循环正在使用 <=

for (int y = 0; y <= Map.HEIGHT; y++)

因此您的第二组循环应该使用 Map.Height + 1 进行索引计算：

for (int x = 0; x < Map.WIDTH; x++)
{
    for (int y = 0; y < Map.HEIGHT; y++)
    {
        triangles[nextIndex] = x * (Map.HEIGHT + 1) + y;
        triangles[nextIndex + 1] = x * (Map.HEIGHT + 1) + y + 1;
        triangles[nextIndex + 2] = (x + 1) * (Map.HEIGHT + 1) + y + 1;

        nextIndex += 3;

        triangles[nextIndex] = x * (Map.HEIGHT + 1) + y;
        triangles[nextIndex + 1] = (x + 1) * (Map.HEIGHT + 1) + y + 1;
        triangles[nextIndex + 2] = (x + 1) * (Map.HEIGHT + 1) + y;

        nextIndex += 3;
    }
}

Unity 中的动态网格计算未正确索引三角形

Dynamic Mesh Calculation in Unity is not Indexing Triangles Properly

c#

mesh

unity3d