Apachai.Effects.Core.Utility.GetLinePoints C# (CSharp) Method

        public static Point[] GetLinePoints(Point first, Point second)
        {
            Point[] coords = null;

            int x1 = first.X;
            int y1 = first.Y;
            int x2 = second.X;
            int y2 = second.Y;
            int dx = x2 - x1;
            int dy = y2 - y1;
            int dxabs = Math.Abs(dx);
            int dyabs = Math.Abs(dy);
            int px = x1;
            int py = y1;
            int sdx = Math.Sign(dx);
            int sdy = Math.Sign(dy);
            int x = 0;
            int y = 0;

            if (dxabs > dyabs)
            {
                coords = new Point[dxabs + 1];

                for (int i = 0; i <= dxabs; i++)
                {
                    y += dyabs;

                    if (y >= dxabs)
                    {
                        y -= dxabs;
                        py += sdy;
                    }

                    coords[i] = new Point(px, py);
                    px += sdx;
                }
            }
            else
                // had to add in this cludge for slopes of 1 ... wasn't drawing half the line
                if (dxabs == dyabs)
            {
                coords = new Point[dxabs + 1];

                for (int i = 0; i <= dxabs; i++)
                {
                    coords[i] = new Point(px, py);
                    px += sdx;
                    py += sdy;
                }
            }
            else
            {
                coords = new Point[dyabs + 1];

                for (int i = 0; i <= dyabs; i++)
                {
                    x += dxabs;

                    if (x >= dyabs)
                    {
                        x -= dyabs;
                        px += sdx;
                    }

                    coords[i] = new Point(px, py);
                    py += sdy;
                }
            }

            return coords;
        }