/// <summary>
/// Initializes a new instance of the <see cref="Vector2d" /> class from a point.
/// </summary>
/// <param name="point">Point to convert.</param>
/// <returns>New vector with same values.</returns>
public Vector2d(Point2d point)
: this(point.X, point.Y)
{
}
/// <summary>
/// Initializes a new instance of the <see cref="Line2d"/> class.
/// </summary>
/// <param name="startPoint">Start point.</param>
/// <param name="direction">Direction (length of vector will be disregarded).</param>
/// <param name="length">Desired length of the line.</param>
/// <returns>New 2d line instance.</returns>
public Line2d(Point2d startPoint, Vector2d direction, double length)
: this(startPoint, direction.Unit() * length)
{
}
/// <summary>
/// Initializes a new instance of the <see cref="Line2d"/> class.
/// </summary>
/// <param name="startPoint">The start point of the line.</param>
/// <param name="direction">Direction. The length of the vector will determine the end point.</param>
/// <returns>New 2d line instance.</returns>
public Line2d(Point2d startPoint, Vector2d direction)
: this(startPoint, startPoint + direction)
{
}
/// <summary>
/// Initializes a new instance of the <see cref="Line2d"/> class.
/// </summary>
/// <param name="startPoint">Start point of the line.</param>
/// <param name="endPoint">End point of the line.</param>
public Line2d(Point2d startPoint, Point2d endPoint)
{
this.StartPoint = startPoint;
this.EndPoint = endPoint;
this.Domain = new Interval(0, Length);
}
/// <summary>
/// Initializes a new instance of the <see cref="Point3d" /> class from a 2-dimensional point.
/// </summary>
/// <param name="point">2d point to convert.</param>
/// <returns><see cref="Point3d" />.</returns>
public Point3d(Point2d point)
: base(point.X, point.Y, 0)
{
}
/// <summary> /// Computes the point at a specified parameter, provided as a <see cref="Point2d" /> instance. /// </summary> /// <param name="uvPoint"><see cref="Point2d" /> parameter coordinates.</param> /// <returns><see cref="Point3d" /> instance of the specified point.</returns> public Point3d PointAt(Point2d uvPoint) => this.PointAt(uvPoint.X, uvPoint.Y);