public static double Distance(MyVector2D v1, MyVector2D v2)
{
double diffX = v1.X - v2.X;
double diffY = v1.Y - v2.Y;
return(Math.Sqrt(diffX * diffX + diffY * diffY));
}
public static double DistancePointLine(MyVector2D linePoint1, MyVector2D linePoint2, double x, double y)
{
double first = (linePoint2.Y - linePoint1.Y) * x;
double second = (linePoint2.X - linePoint1.X) * y;
double third = linePoint2.X * linePoint1.Y;
double fourth = linePoint1.X * linePoint2.Y;
double citatel = Math.Abs(first - second + third - fourth);
double fifth = linePoint2.Y - linePoint1.Y;
double sixth = linePoint2.X - linePoint1.X;
double jmenovatel = Math.Sqrt(fifth * fifth + sixth * sixth);
return(citatel / jmenovatel);
}
public static MyVector2D MultiplyByNumber(MyVector2D v, double number)
{
return(new MyVector2D(v.X * number, v.Y * number));
}
public static MyVector2D Normalize(MyVector2D v)
{
double length = v.Magnitude();
return(new MyVector2D(v.X / length, v.Y / length));
}
public static MyVector2D Difference(MyVector2D v1, MyVector2D v2)
{
return(new MyVector2D(v2.X - v1.X, v2.Y - v1.Y));
}
public static double ScalarProduct(MyVector2D v1, MyVector2D v2)
{
return((v1.X * v2.X) + (v1.Y * v2.Y));
}
public static double GetAngleBetweenTwoVectors(MyVector2D v1, MyVector2D v2)
{
return(Math.Acos(MyVector2D.ScalarProduct(v1, v2) / (v1.Magnitude() * v2.Magnitude())));
}