Accord.Imaging.RansacHomographyEstimator.degenerate C# (CSharp) Method

        private bool degenerate(int[] points)
        {
            PointF[] x1 = this.pointSet1.Get(points);
            PointF[] x2 = this.pointSet2.Get(points);

            // If any three of the four points in each set is collinear,
            //  the resulting homography matrix will be degenerate.

            return Tools.Collinear(x1[0], x1[1], x1[2]) ||
                   Tools.Collinear(x1[0], x1[1], x1[3]) ||
                   Tools.Collinear(x1[0], x1[2], x1[3]) ||
                   Tools.Collinear(x1[1], x1[2], x1[3]) ||

                   Tools.Collinear(x2[0], x2[1], x2[2]) ||
                   Tools.Collinear(x2[0], x2[1], x2[3]) ||
                   Tools.Collinear(x2[0], x2[2], x2[3]) ||
                   Tools.Collinear(x2[1], x2[2], x2[3]);
        }