Index was outside of the bounds of the array

Unity Engine
1

im having trouble figering out where this error is coming from in here can anyone see whats going wrong.

public int xSize, ySize;
Vector3[ ] Vertexs;
int[ ] Triangles;
Mesh mesh;
private void Awake()
{
mesh = GetComponent().mesh;
Generate();
}
void Generate()
{
Vertexs = new Vector3[(xSize +1 * ySize + 1)];
/Triangles = new int[xSizeySize * 6];/
for (int i = 0, x = 0; x <= xSize; x++)
{
for(int y = 0; y <= ySize; y++, i++)
{
Vertexs = new Vector3(x, 0, y);
}
}
/*for (int x = 0; x <= xSize; x++)
{
for(int y = 0; y <= ySize; y++)
{
Triangles[0] = 0;
Triangles[1] = 1;
Triangles[2] = 2;
Triangles[3] = 2;
Triangles[4] = 1;
Triangles[5] = 3;
}
_}/_
mesh.vertices = Vertexs;
mesh.triangles = Triangles;
}
part of the script has been committed out to try and isolate the issue but that hasn’t made it any easier to fined the error.
Thanks Chris

2

Use code tags and post the error or what line the error is pointing to. Otherwise, it’s just a guess. Since I see you setting values in Triangles, are you sure you have an array of at least size 6?

Actually, this line

Vertexs = new Vector3(x, 0, y);

Doesn’t look right either. Vertexs is an array of Vector3, but you’re trying to assign a single Vector3 to it, is it not throwing an error?

3

Check the first post in the forum for how to format your code here to be readable.

As for the problem, insert some Debug.Log() statements. At a bare minimum, print the following:

Vertexs.Length
Triangles.Length

(do that right after you allocate them)

Also, your code cannot possible compile, as you are assigning a Vector3 to a Vector3[ ], so check your error logs and fix 'em before you do anything else.

If you want some working examples of fabricating geometry in Unity, check out my makegeo library. It’s got a bunch of random ways of doing stuff, making spheres and planes and whatnot.

MakeGeo is presently hosted at these locations:

https://bitbucket.org/kurtdekker/makegeo

4

i’ve figured it out, i’m quite embarrassed, a simple math error i forgot to add the ()
Vertexs = new Vector3[(xSize +1 * ySize + 1)];
it should have been
Vertexs = new Vector3[(xSize +1) * (ySize + 1)];

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