public bool IsParallel(Line line)
{
Vector firstLineDirectionVector = GetDirectionVector();
Vector secondLineDirectionVector = line.GetDirectionVector();
firstLineDirectionVector.Normalize(secondLineDirectionVector.GetLength());
if (!(firstLineDirectionVector - secondLineDirectionVector).IsZeroVector())
{
firstLineDirectionVector = firstLineDirectionVector * (-1.0);
}
Vector difference = firstLineDirectionVector - secondLineDirectionVector;
return(difference.IsZeroVector());
}
/// <summary>
/// Возвращает точку на отрезку, делящую его в заданном отношении считая от вершины A.
/// </summary>
public Point GetDividingPointByRatio(double ratio)
{
if (ratio < 0)
{
ratio = 0;
}
if (ratio > 1)
{
ratio = 1;
}
var fromAToB = new Vector(A, B);
fromAToB.Normalize(ratio * GetLength());
return(A + fromAToB);
}