- Home /
Create a Triangle Mesh.
So I am trying to create a circle out of a triangle mesh and assign the individual triangles to a game object. My script is attached but it does not seem to be working. You may need to refresh yourself with trigonometry. (Using sin and cosine to find the x and y position).
It displays a star looking shape. Almost as if the angle is extremely obtuse.
public float radius = 1;
public int slices = 6;
public List<GameObject> gSlice = new List<GameObject>();
void Start()
{
gameObject.AddComponent("MeshFilter");
gameObject.AddComponent("MeshRenderer");
float angle = 360/slices;
for(int i = 0; i < slices; i++)
{
float nAngle = angle + (i * angle);
gSlice.Add(new GameObject());
gSlice[i].gameObject.AddComponent("MeshFilter");
gSlice[i].gameObject.AddComponent("MeshRenderer");
gSlice[i].gameObject.GetComponent<MeshFilter>().mesh.vertices = new Vector3[] {new Vector3(0, 0, 0), new Vector3(Mathf.Cos(nAngle), Mathf.Sin(nAngle), 0), new Vector3(Mathf.Cos(nAngle + angle), Mathf.Sin(nAngle + angle), 0)};
gSlice[i].gameObject.GetComponent<MeshFilter>().mesh.uv = new Vector2[] {new Vector2(0, 0), new Vector2(0, 1), new Vector2(1, 1)};
gSlice[i].gameObject.GetComponent<MeshFilter>().mesh.triangles = new int[] {0, 1, 2};
Mesh mesh = GetComponent<MeshFilter>().mesh;
mesh.Clear();
}
}
As usual, thanks in advanced. ~S
Answer by SnotE101 · Dec 23, 2014 at 03:56 AM
So I made quite a simple mistake. I calculated the angle in degrees not radians. This threw off the x and y coordinates of the triangle.
Would you $$anonymous$$d to update the code, I have done this - angle = ($$anonymous$$athf.PI/180) * angle;
but the code is not showing anything
Here you go! Thats the Unity Package for the entire project.
Your answer
![](https://koobas.hobune.stream/wayback/20220613174711im_/https://answers.unity.com/themes/thub/images/avi.jpg)
Follow this Question
Related Questions
Best way to optimize mesh updating through code? 1 Answer
How does the Triangles work on Mesh? 1 Answer
How come do I keep getting this error on my voxel script 1 Answer
Failed setting triangles in my mesh 1 Answer
Mesh adaption 1 Answer