Class ExplicitPCurve2D

Curve defined by 3 polynomials in one veriable ("u"), or by 4 polynoms with an additional "w" component (homogenuous coordinates). the curve may be defined piecewise: the knots array defines the intervalls for the u parameter while the polynom arrays define the curves for each intervall

Inheritance
System.Object
ExplicitPCurve2D
Inherited Members
System.Object.Equals(System.Object)
System.Object.Equals(System.Object, System.Object)
System.Object.GetHashCode()
System.Object.GetType()
System.Object.MemberwiseClone()
System.Object.ReferenceEquals(System.Object, System.Object)
System.Object.ToString()
Namespace: CADability
Assembly: CADability.dll
Syntax
public class ExplicitPCurve2D

Constructors

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ExplicitPCurve2D(Polynom, Polynom, Polynom)

Declaration
public ExplicitPCurve2D(Polynom px, Polynom py, Polynom pw = null)
Parameters
Type Name Description
Polynom px
Polynom py
Polynom pw
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ExplicitPCurve2D(Polynom[], Polynom[], Polynom[], Double[])

Declaration
public ExplicitPCurve2D(Polynom[] px, Polynom[] py, Polynom[] pw = null, double[] knots = null)
Parameters
Type Name Description
Polynom[] px
Polynom[] py
Polynom[] pw
System.Double[] knots

Fields

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knots

Declaration
public double[] knots
Field Value
Type Description
System.Double[]
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pw

Declaration
public Polynom[] pw
Field Value
Type Description
Polynom[]
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pw1

Declaration
public Polynom[] pw1
Field Value
Type Description
Polynom[]
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pw2

Declaration
public Polynom[] pw2
Field Value
Type Description
Polynom[]
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pwi

Declaration
public Polynom[] pwi
Field Value
Type Description
Polynom[]
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px

Declaration
public Polynom[] px
Field Value
Type Description
Polynom[]
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px1

Declaration
public Polynom[] px1
Field Value
Type Description
Polynom[]
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px2

Declaration
public Polynom[] px2
Field Value
Type Description
Polynom[]
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pxi

Declaration
public Polynom[] pxi
Field Value
Type Description
Polynom[]
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py

Declaration
public Polynom[] py
Field Value
Type Description
Polynom[]
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py1

Declaration
public Polynom[] py1
Field Value
Type Description
Polynom[]
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py2

Declaration
public Polynom[] py2
Field Value
Type Description
Polynom[]
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pyi

Declaration
public Polynom[] pyi
Field Value
Type Description
Polynom[]

Properties

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IsRational

Declaration
public bool IsRational { get; }
Property Value
Type Description
System.Boolean
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UnitCircle

Declaration
public static ExplicitPCurve2D UnitCircle { get; }
Property Value
Type Description
ExplicitPCurve2D

Methods

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Area()

Declaration
public double Area()
Returns
Type Description
System.Double
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Area(Double, Double)

Returns the area swept by the vector from (0,0) to the points on the curve from parameter sp to ep

Declaration
public double Area(double sp, double ep)
Parameters
Type Name Description
System.Double sp
System.Double ep
Returns
Type Description
System.Double
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FromCurve(ICurve2D, Double[], Int32, Boolean)

Declaration
public static ExplicitPCurve2D FromCurve(ICurve2D cv, double[] knots, int degree, bool homogenuous)
Parameters
Type Name Description
ICurve2D cv
System.Double[] knots
System.Int32 degree
System.Boolean homogenuous
Returns
Type Description
ExplicitPCurve2D
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GetModified(ModOp2D)

Declaration
public ExplicitPCurve2D GetModified(ModOp2D m)
Parameters
Type Name Description
ModOp2D m
Returns
Type Description
ExplicitPCurve2D
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MakeCircle(ModOp2D)

Declaration
public static ExplicitPCurve2D MakeCircle(ModOp2D toCircle)
Parameters
Type Name Description
ModOp2D toCircle
Returns
Type Description
ExplicitPCurve2D
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MakeLine(GeoPoint2D, GeoVector2D)

Declaration
public static ExplicitPCurve2D MakeLine(GeoPoint2D sp, GeoVector2D dir)
Parameters
Type Name Description
GeoPoint2D sp
GeoVector2D dir
Returns
Type Description
ExplicitPCurve2D
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PointAt(Double)

Declaration
public GeoPoint2D PointAt(double u)
Parameters
Type Name Description
System.Double u
Returns
Type Description
GeoPoint2D
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PositionOf(GeoPoint2D, out Double)

Declaration
public double PositionOf(GeoPoint2D p, out double dist)
Parameters
Type Name Description
GeoPoint2D p
System.Double dist
Returns
Type Description
System.Double