public static Vector3[] GetPathInScreenSpace(this Camera cam, Vector3[] worldPathPoints)
    {
        var returnArray = new Vector3[worldPathPoints.Length];

        var cameraViewProjectionMtx =
            //Camera.main.projectionMatrix *
            Matrix4x4.Perspective(Camera.main.fieldOfView, 1, 0, 1) *
            Camera.main.worldToCameraMatrix;

        for (var i = 0; i < worldPathPoints.Length; i++)
            returnArray[i] = cameraViewProjectionMtx.MultiplyPoint(worldPathPoints[i]);

        return returnArray;
    }