/// <summary>
/// Initializes a new instance of the <c>Spline</c> class.
/// </summary>
/// <param name="fitPoints">Spline fit points.</param>
/// <remarks>Spline entities created with a list of fit points cannot be used as a boundary path in a hatch.</remarks>
public Spline(IEnumerable<Vector3> fitPoints)
: base(EntityType.Spline, DxfObjectCode.Spline)
{
this.degree = 3;
this.isPeriodic = false;
this.controlPoints = new List<SplineVertex>();
this.knots = new List<double>();
if (fitPoints == null)
throw new ArgumentNullException(nameof(fitPoints));
this.fitPoints = new List<Vector3>(fitPoints);
this.creationMethod = SplineCreationMethod.FitPoints;
this.isClosed = this.fitPoints[0].Equals(this.fitPoints[this.fitPoints.Count - 1]);
this.flags = this.isClosed ? SplinetypeFlags.Closed | SplinetypeFlags.Rational : SplinetypeFlags.Rational;
}
/// <summary>
/// Initializes a new instance of the <c>Spline</c> class.
/// </summary>
/// <param name="fitPoints">Spline fit points.</param>
/// <remarks>Spline entities created with a list of fit points cannot be used as a boundary path in a hatch.</remarks>
public Spline(IEnumerable <Vector3> fitPoints)
: base(EntityType.Spline, DxfObjectCode.Spline)
{
this.degree = 3;
this.isPeriodic = false;
this.controlPoints = new List <SplineVertex>();
this.knots = new List <double>();
if (fitPoints == null)
{
throw new ArgumentNullException(nameof(fitPoints));
}
this.fitPoints = new List <Vector3>(fitPoints);
this.creationMethod = SplineCreationMethod.FitPoints;
this.isClosed = this.fitPoints[0].Equals(this.fitPoints[this.fitPoints.Count - 1]);
this.flags = this.isClosed ? SplinetypeFlags.Closed | SplinetypeFlags.Rational : SplinetypeFlags.Rational;
}
/// <summary>
/// Initializes a new instance of the <c>Spline</c> class.
/// </summary>
/// <param name="controlPoints">Spline control points.</param>
/// <param name="knots">Spline knot vector.</param>
/// <param name="degree">Degree of the spline curve. Valid values are 1 (linear), degree 2 (quadratic), degree 3 (cubic), and so on up to degree 10.</param>
internal Spline(List <SplineVertex> controlPoints, List <double> knots, short degree, List <Vector3> fitPoints, SplineCreationMethod method, bool isPeriodic)
: base(EntityType.Spline, DxfObjectCode.Spline)
{
if (degree < 1 || degree > 10)
{
throw new ArgumentOutOfRangeException(nameof(degree), degree, "The spline degree valid values range from 1 to 10.");
}
if (controlPoints == null)
{
throw new ArgumentNullException(nameof(controlPoints));
}
if (controlPoints.Count < 2)
{
throw new ArgumentException("The number of control points must be equal or greater than 2.");
}
if (controlPoints.Count < degree + 1)
{
throw new ArgumentException("The number of control points must be equal or greater than the spline degree + 1.");
}
if (knots == null)
{
throw new ArgumentNullException(nameof(knots));
}
if (knots.Count != controlPoints.Count + degree + 1)
{
throw new ArgumentException("The number of knots must be equals to the number of control points + spline degree + 1.");
}
this.fitPoints = fitPoints;
this.controlPoints = controlPoints;
this.knots = knots;
this.degree = degree;
this.creationMethod = method;
this.isPeriodic = isPeriodic;
if (this.isPeriodic)
{
this.isClosed = true;
this.flags = SplinetypeFlags.Closed | SplinetypeFlags.Periodic | SplinetypeFlags.Rational;
}
else
{
this.isClosed = controlPoints[0].Position.Equals(controlPoints[controlPoints.Count - 1].Position);
this.flags = this.isClosed ? SplinetypeFlags.Closed | SplinetypeFlags.Rational : SplinetypeFlags.Rational;
}
}
/// <summary>
/// Initializes a new instance of the <c>Spline</c> class.
/// </summary>
/// <param name="controlPoints">Spline control points.</param>
/// <param name="degree">Degree of the spline curve. Valid values are 1 (linear), degree 2 (quadratic), degree 3 (cubic), and so on up to degree 10.</param>
/// <param name="periodic">Sets if the spline as periodic closed (default false).</param>
public Spline(List <SplineVertex> controlPoints, short degree, bool periodic)
: base(EntityType.Spline, DxfObjectCode.Spline)
{
if (degree < 1 || degree > 10)
{
throw new ArgumentOutOfRangeException("degree", degree, "The spline degree valid values range from 1 to 10.");
}
if (controlPoints == null)
{
throw new ArgumentNullException("controlPoints");
}
if (controlPoints.Count < 2)
{
throw new ArgumentException("The number of control points must be equal or greater than 2.");
}
if (controlPoints.Count < degree + 1)
{
throw new ArgumentException("The number of control points must be equal or greater than the spline degree + 1.");
}
this.fitPoints = new List <Vector3>();
this.degree = degree;
this.creationMethod = SplineCreationMethod.ControlPoints;
this.isPeriodic = periodic;
if (this.isPeriodic)
{
this.isClosed = true;
this.flags = SplinetypeFlags.Closed | SplinetypeFlags.Periodic | SplinetypeFlags.Rational;
}
else
{
this.isClosed = controlPoints[0].Position.Equals(controlPoints[controlPoints.Count - 1].Position);
this.flags = this.isClosed ? SplinetypeFlags.Closed | SplinetypeFlags.Rational : SplinetypeFlags.Rational;
}
this.Create(controlPoints);
}
public static bool HasFlag(this SplinetypeFlags flags, SplinetypeFlags flag)
{
return((flags & flag) != 0);
}
/// <summary>
/// Initializes a new instance of the <c>Spline</c> class.
/// </summary>
/// <param name="controlPoints">Spline control points.</param>
/// <param name="knots">Spline knot vector.</param>
/// <param name="degree">Degree of the spline curve. Valid values are 1 (linear), degree 2 (quadratic), degree 3 (cubic), and so on up to degree 10.</param>
internal Spline(List<SplineVertex> controlPoints, List<double> knots, short degree, List<Vector3> fitPoints, SplineCreationMethod method, bool isPeriodic)
: base(EntityType.Spline, DxfObjectCode.Spline)
{
if (degree < 1 || degree > 10)
throw new ArgumentOutOfRangeException(nameof(degree), degree, "The spline degree valid values range from 1 to 10.");
if (controlPoints == null)
throw new ArgumentNullException(nameof(controlPoints));
if (controlPoints.Count < 2)
throw new ArgumentException("The number of control points must be equal or greater than 2.");
if (controlPoints.Count < degree + 1)
throw new ArgumentException("The number of control points must be equal or greater than the spline degree + 1.");
if (knots == null)
throw new ArgumentNullException(nameof(knots));
if (knots.Count != controlPoints.Count + degree + 1)
throw new ArgumentException("The number of knots must be equals to the number of control points + spline degree + 1.");
this.fitPoints = fitPoints;
this.controlPoints = controlPoints;
this.knots = knots;
this.degree = degree;
this.creationMethod = method;
this.isPeriodic = isPeriodic;
if (this.isPeriodic)
{
this.isClosed = true;
this.flags = SplinetypeFlags.Closed | SplinetypeFlags.Periodic | SplinetypeFlags.Rational;
}
else
{
this.isClosed = controlPoints[0].Position.Equals(controlPoints[controlPoints.Count - 1].Position);
this.flags = this.isClosed ? SplinetypeFlags.Closed | SplinetypeFlags.Rational : SplinetypeFlags.Rational;
}
}
