Cara menambahkan titik di antara dua titik pada poligon lengkap

Saya menghitung semua titik garis. dengan menggunakan y = mx + c.

Masalah saya adalah saya bisa mendapatkan semua titik vertikal x = a, beberapa titik diagonal dan titik Horizontal tetapi tidak semua. Saya perlu tahu apa penyebabnya dan bagaimana cara memperbaikinya?
Saya membuat hamparan bitmap yang disediakan oleh perpustakaan pengambil video ICImaging. Jadi saya dibatasi hanya meneruskan titik bilangan bulat untuk menggambar di layar.

   private void btnAddPoint_Click(object sender, EventArgs e)
    {
        //IsLineSelected = true;
        Debug.Print("Current Points in List ");
        foreach (System.Drawing.Point P in PathPoints)
        {
            Debug.Print(P.ToString());
        }
        for (int IndexI = 0; IndexI != PathPoints.Count - 1; IndexI++)
        {
            if (IndexI  == PathPoints.Count-1)
            {
                break;
            }
            else
            {
                Debug.Print("P1:" + PathPoints[IndexI].ToString() + "P2:"+ PathPoints[IndexI+1].ToString());
                ShapeDirectory.AllLinePoints(PathPoints[IndexI], PathPoints[IndexI + 1]);
            }

        }

        foreach (System.Drawing.Point P in ShapeDirectory.LinePoints)
        {
            PathPoints3.Add(P);
        }
        drawLinePoints = true;

    }        

    public static void AllLinePoints(Point p1, Point p2)
    {

        double YDiff = p2.Y - p1.Y;
        double XDiff = p2.X - p1.X;

        double SlopM = Math.Round(Math.Abs(YDiff / XDiff));

        double YinterceptB = Math.Round(Math.Abs(p1.Y - (SlopM * p1.X)));

        Debug.Print("Slop: " + SlopM.ToString() + "Y Intercept: " + YinterceptB.ToString());

        if (SlopM == 0)
        {

        }


        if (Double.IsNegativeInfinity(SlopM) || Double.IsPositiveInfinity(SlopM))
        {
            int LowerBoundX = 0;
            int LowerBoundY = 0;

            int upperBoundX;
            int upperBoundY;

            double distanceBetwwenP1andp2 = GetDistanceBetween2points(p1, p2);

            if (p1.X == p2.X )
            {
                LowerBoundX = p1.X;
                upperBoundX = p2.X;                   

            }

            if (p1.Y <= p2.Y)
            {
                LowerBoundY = p1.Y;
                upperBoundY = p2.Y;

            }
            else
            {
                LowerBoundY = p2.Y;
                upperBoundY = p1.Y;
            }

            //Vertical 

            for (int YIndex = LowerBoundY; YIndex <= upperBoundY; YIndex++)
            {

                        TempLinePoint.X = LowerBoundX;
                        TempLinePoint.Y = YIndex;

                        //Debug.Print("Current Line Points X: " + XIndex.ToString() + "Y: " + YIndex.ToString());
                        LinePoints.Add(TempLinePoint);                            
            }
        }
        else 
        {
            int LowerBoundX;
            int LowerBoundY;

            int upperBoundX;
            int upperBoundY;

            double distanceBetwwenP1andp2 = GetDistanceBetween2points(p1, p2);

            if (p1.X <= p2.X && p1.Y <= p2.Y)
            {
                LowerBoundX = p1.X;
                upperBoundX = p2.X;

                LowerBoundY = p1.Y;
                upperBoundY = p2.Y;

            }
            else
            {
                LowerBoundX = p2.X;
                upperBoundX = p1.X;

                LowerBoundY = p2.Y;
                upperBoundY = p1.Y;

            }

            //if Vertical 
            for (int YIndex = LowerBoundY; YIndex <= upperBoundY; YIndex++)
            {

                for (int XIndex = LowerBoundX; XIndex <= upperBoundX; XIndex++)
                {
                    if (YIndex == (SlopM * XIndex) + YinterceptB)
                    {
                        TempLinePoint.X = XIndex;
                        TempLinePoint.Y = YIndex;

                        //Debug.Print("Current Line Points X: " + XIndex.ToString() + "Y: " + YIndex.ToString());
                        LinePoints.Add(TempLinePoint);

                    }
                }
            }

        }

Sunting

Saya telah mengubah metode saya.