void MakeMesh()
{
stepCount = Mathf.RoundToInt(fov.getViewAngle() * meshRes);
float stepAngle = fov.getViewAngle() - stepCount;
List <Vector3> viewVertex = new List <Vector3>();
hit = new RaycastHit2D();
for (int i = 0; i < stepCount; i++)
{
float angle = fov.transform.eulerAngles.y - fov.getViewAngle() / 2 + stepAngle * i;
Vector3 dir = fov.dirFromAngle(angle, false);
hit = Physics2D.Raycast(fov.transform.position, dir, fov.getViewRadius(), fov.obstcaleMask);
if (hit.collider == null)
{
viewVertex.Add(transform.position + dir.normalized * fov.getViewRadius());
}
else
{
viewVertex.Add(transform.position + dir.normalized * hit.distance);
}
}
int vertexCount = viewVertex.Count + 1;
vertices = new Vector3[vertexCount];
triangles = new int[(vertexCount - 2) * 3];
vertices[0] = Vector3.zero;
for (int i = 0; i < vertexCount - 1; i++)
{
vertices[i + 1] = transform.InverseTransformPoint(viewVertex[i]);
if (i < vertexCount - 2)
{
triangles[i * 3 + 2] = 0;
triangles[i * 3 + 1] = i + 1;
triangles[i * 3] = i + 2;
}
}
mesh.Clear();
mesh.vertices = vertices;
mesh.triangles = triangles;
mesh.RecalculateNormals();
}