void Start()
{
path = GetComponentInChildren <LineRenderer>();
col = GetComponent <PolygonCollider2D>();
Vector3[] points = CalculateLine();
Torus2D lineCol = CalculateCollider(points, lineWidth);
col.pathCount = 2;
col.SetPath(0, lineCol.outside);
col.SetPath(1, lineCol.inside);
DrawCircle(points, lineWidth);
}
static Torus2D CalculateCollider(Vector3[] nodes, float width)
{
Torus2D torusCollider = new Torus2D();
torusCollider.outside = new Vector2[nodes.Length];
torusCollider.inside = new Vector2[nodes.Length];
for (int i = 0; i < nodes.Length; i++)
{
Vector3 nodePosition = nodes[i];
Vector2 directionFromCentre = new Vector2(nodePosition.x, nodePosition.z); // assumes the center is 0, 0, 0
torusCollider.outside[i] = new Vector2(nodePosition.x, nodePosition.z) - directionFromCentre;
torusCollider.inside[i] = new Vector2(nodePosition.x + width, nodePosition.z) - directionFromCentre;
}
return(torusCollider);
}
