海王星

private float B(Point pt, float k) { //通过y = k x + b斜截式反推B float b = pt.Y - k * pt.X; return b; } 

private float Length(Point ptB, Point ptE) { float xLength = ptE.X - ptB.X; float yLength = ptE.Y - ptB.Y; float length = (float)Math.Sqrt((double)(x...

private float Y(float k, float x, float b) { //y = k x + b float y = k * x + b; return y; } 

private float K(Point ptB, Point ptE) { //k=tanα=（y2-y1）/（x2-x1） return ((float)(ptE.Y - ptB.Y)) / ((float)(ptE.X - ptB.X)); }