/// <summary>
/// 计算指定点相对于当前线段的转弯方向
/// </summary>
/// <param name="otherPoint"></param>
/// <returns></returns>
public TurnDirectionType GetTurnDirection(Point3D otherPoint)
{
Point3D v1 = BeginPoint.Vector(EndPoint);
Point3D v2 = EndPoint.Vector(otherPoint);
double vProduct = (v2 as Point3D).VectorProduct(v1);
return(vProduct > 0 ? TurnDirectionType.Right : vProduct < 0 ? TurnDirectionType.Left : TurnDirectionType.Stright);
}
public override int GetHashCode()
{
const int hashIndex = 307;
var result = (BeginPoint != null) ? BeginPoint.GetHashCode() : 0;
result = (result * hashIndex) ^ ((EndPoint != null) ? EndPoint.GetHashCode() : 0);
return(result);
}
/// <summary>
/// 获取线段长度
/// </summary>
/// <returns></returns>
public double GetLength()
{
if (BeginPoint == null)
{
throw new ArgumentNullException("计算线段长度时，线段起始点出现空引用");
}
return(BeginPoint.DisTo(EndPoint));
}
/// <summary>
/// 获取线段方向（弧度）
/// </summary>
/// <returns></returns>
public double GetDirection()
{
if (BeginPoint == null)
{
throw new ArgumentNullException("计算线段方向时，线段起始点出现空引用");
}
return(BeginPoint.DirTo(EndPoint));
}
public override int GetHashCode()
{
const int hashIndex = 307;
var result = (Center != null) ? Center.GetHashCode() : 0;
result = (result * hashIndex) ^ ((BeginPoint != null) ? BeginPoint.GetHashCode() : 0);
result = (result * hashIndex) ^ ((EndPoint != null) ? EndPoint.GetHashCode() : 0);
result = (result * hashIndex) ^ ArcDirection.GetHashCode();
return(result);
}
public override bool Equals(object obj)
{
if (this == obj)
{
return(true);
}
if (obj == null || !GetType().IsEquivalentTo(obj.GetType()))
{
return(false);
}
LineSegment other = (LineSegment)obj;
return(BeginPoint.Equals(other.BeginPoint) &&
EndPoint.Equals(other.EndPoint));
}
public override bool Equals(object obj)
{
if (this == obj)
{
return(true);
}
if (obj == null || !GetType().IsEquivalentTo(obj.GetType()))
{
return(false);
}
ArcSegment other = (ArcSegment)obj;
return(BeginPoint.Equals(other.BeginPoint) &&
EndPoint.Equals(other.EndPoint) &&
Center.Equals(other.Center) &&
ArcDirection.Equals(other.ArcDirection));
}
/// <summary>
/// 延长直线段
/// </summary>
/// <param name="type">延长类型：0都延长，1延长尾点，-1延长首点</param>
/// <param name="expandDis"></param>
/// <returns></returns>
public LineSegment Expand(int type, double expandDis)
{
switch (type)
{
case 0:
return(new LineSegment(BeginPoint.GetNextPoint(GetDirection() + Math.PI, expandDis),
EndPoint.GetNextPoint(GetDirection(), expandDis)));
case -1:
return(new LineSegment(BeginPoint.GetNextPoint(GetDirection() + Math.PI, expandDis), EndPoint));
case 1:
return(new LineSegment(BeginPoint, EndPoint.GetNextPoint(GetDirection(), expandDis)));
default:
break;
}
throw new ArgumentOutOfRangeException("扩展线段（LineSegment.Expand）时,出现了非法的延长类型");
}
public override void Draw()
{
Console.WriteLine($"Тип фигуры: {FigureType} ({GetType()}).");
Console.WriteLine($"Ее параметры: координаты начальной точки {BeginPoint.ToString()}, конечной точки {EndPoint.ToString()}.");
}
public override int GetHashCode()
{
int hash = 1;
if (Key.Length != 0)
{
hash ^= Key.GetHashCode();
}
if (Type != 0)
{
hash ^= Type.GetHashCode();
}
if (Broadcast != false)
{
hash ^= Broadcast.GetHashCode();
}
if (Name.Length != 0)
{
hash ^= Name.GetHashCode();
}
if (Avatar.Length != 0)
{
hash ^= Avatar.GetHashCode();
}
if (Seat != 0)
{
hash ^= Seat.GetHashCode();
}
if (RoomKey.Length != 0)
{
hash ^= RoomKey.GetHashCode();
}
if (RoomName.Length != 0)
{
hash ^= RoomName.GetHashCode();
}
if (Message.Length != 0)
{
hash ^= Message.GetHashCode();
}
if (BeginPoint != 0D)
{
hash ^= BeginPoint.GetHashCode();
}
if (EndPoint != 0D)
{
hash ^= EndPoint.GetHashCode();
}
if (PenSize != 0)
{
hash ^= PenSize.GetHashCode();
}
if (Color != 0)
{
hash ^= Color.GetHashCode();
}
hash ^= users_.GetHashCode();
hash ^= rooms_.GetHashCode();
if (Code != 0)
{
hash ^= Code.GetHashCode();
}
if (Error.Length != 0)
{
hash ^= Error.GetHashCode();
}
if (Id != 0)
{
hash ^= Id.GetHashCode();
}
return(hash);
}
public override string ToString()
{
return(string.Format("{0};{1}", BeginPoint.ToString(), EndPoint.ToString()));
}
/// <summary>
/// 根据指定方向和距离平移直线段
/// </summary>
/// <param name="radian"></param>
/// <param name="distance"></param>
public override void Move(double radian, double distance)
{
SetBeginPoint(BeginPoint.GetNextPoint(radian, distance));
SetEndPoint(EndPoint.GetNextPoint(radian, distance));
}
public override string ToString()
{
return(string.Format("{0};{1};{2};{3}", Center.ToString(), BeginPoint.ToString(), EndPoint.ToString(), ArcDirection.ToString()));
}
public override string ToString()
{
return(BeginPoint.ToString() + " - " + EndPoint.ToString());
}
/// <summary>
/// Возвращает информацию о дороге в виде «НАЧАЛЬНАЯ ТОЧКА->КОНЕЧНАЯ ТОЧКА».
/// </summary>
/// <returns>Информация о дороге в виде «НАЧАЛЬНАЯ ТОЧКА->КОНЕЧНАЯ ТОЧКА».</returns>
public override string ToString()
{
return($"{BeginPoint.ToString()}->{EndPoint.ToString()}");
}