generatesightmesh.cs

Mesh GenerateSightMesh (int iterations)
{
	Mesh m = new Mesh ();
	List<Vector3> vertices = new List<Vector3>();
	List<int> triangles = new List<int>();
	List<Color> colours = new List<Color>();
	Vector3 startingPoint = transform.position;
	vertices.Add (startingPoint);
	float angleStep = apertureAngle / iterations;
	RaycastHit hit;
	for (int i = 0; i <= iterations + 1; i++)
	{
		float angle = (-apertureAngle * 0.5f) + (i * angleStep);
		Vector3 sightVector = Quaternion.AngleAxis (angle, transform.up) * transform.forward;
		if (Physics.Raycast (startingPoint, sightVector, out hit, maxSightDistance))
		{
			vertices.Add (startingPoint + sightVector * hit.distance);
		}
		else
		{
			vertices.Add (startingPoint + sightVector * maxSightDistance);
		}
		if (i >= 2)
		{
			triangles.Add (0);
			triangles.Add (i - 1);
			triangles.Add (i);
		}
	}
	m.vertices = vertices.ToArray();
	m.triangles = triangles.ToArray();
	return m;
}