Class DCurve3

DCurve3 is a 3D polyline, either open or closed (via .Closed) Despite the D prefix, it is not dynamic

Inheritance
Object
DCurve3
Implements
Inherited Members
Namespace: g3
Assembly: cs.temp.dll.dll
Syntax
public class DCurve3 : ISampledCurve3d

Constructors

DCurve3()

Declaration
public DCurve3()

DCurve3(DCurve3)

Declaration
public DCurve3(DCurve3 copy)
Parameters
Type Name Description
DCurve3 copy

DCurve3(ISampledCurve3d)

Declaration
public DCurve3(ISampledCurve3d icurve)
Parameters
Type Name Description
ISampledCurve3d icurve

DCurve3(Polygon2d, Int32, Int32)

Declaration
public DCurve3(Polygon2d poly, int ix = 0, int iy = 1)
Parameters
Type Name Description
Polygon2d poly
Int32 ix
Int32 iy

DCurve3(IEnumerable<Vector3d>, Boolean)

Declaration
public DCurve3(IEnumerable<Vector3d> verticesIn, bool bClosed)
Parameters
Type Name Description
IEnumerable<Vector3d> verticesIn
Boolean bClosed

DCurve3(List<Vector3d>, Boolean, Boolean)

Declaration
public DCurve3(List<Vector3d> verticesIn, bool bClosed, bool bTakeOwnership = false)
Parameters
Type Name Description
List<Vector3d> verticesIn
Boolean bClosed
Boolean bTakeOwnership

Fields

Timestamp

Declaration
public int Timestamp
Field Value
Type Description
Int32

vertices

Declaration
protected List<Vector3d> vertices
Field Value
Type Description
List<Vector3d>

Properties

ArcLength

Declaration
public double ArcLength { get; }
Property Value
Type Description
Double

Closed

Declaration
public bool Closed { get; set; }
Property Value
Type Description
Boolean

End

Declaration
public Vector3d End { get; }
Property Value
Type Description
Vector3d

Item[Int32]

Declaration
public Vector3d this[int key] { get; set; }
Parameters
Type Name Description
Int32 key
Property Value
Type Description
Vector3d

SegmentCount

Declaration
public int SegmentCount { get; }
Property Value
Type Description
Int32

Start

Declaration
public Vector3d Start { get; }
Property Value
Type Description
Vector3d

VertexCount

Declaration
public int VertexCount { get; }
Property Value
Type Description
Int32

Vertices

Declaration
public IEnumerable<Vector3d> Vertices { get; }
Property Value
Type Description
IEnumerable<Vector3d>

Methods

AppendVertex(Vector3d)

Declaration
public void AppendVertex(Vector3d v)
Parameters
Type Name Description
Vector3d v

Centroid(Int32)

Declaration
public Vector3d Centroid(int i)
Parameters
Type Name Description
Int32 i
Returns
Type Description
Vector3d

ClearVertices()

Declaration
public void ClearVertices()

DistanceSquared(Vector3d)

Declaration
public double DistanceSquared(Vector3d p)
Parameters
Type Name Description
Vector3d p
Returns
Type Description
Double

DistanceSquared(Vector3d, out Int32, out Double)

find squared distance from p to nearest segment on polyline

Declaration
public double DistanceSquared(Vector3d p, out int iNearSeg, out double fNearSegT)
Parameters
Type Name Description
Vector3d p
Int32 iNearSeg
Double fNearSegT
Returns
Type Description
Double

GetBoundingBox()

Declaration
public AxisAlignedBox3d GetBoundingBox()
Returns
Type Description
AxisAlignedBox3d

GetSegment(Int32)

Declaration
public Segment3d GetSegment(int iSegment)
Parameters
Type Name Description
Int32 iSegment
Returns
Type Description
Segment3d

GetVertex(Int32)

Declaration
public Vector3d GetVertex(int i)
Parameters
Type Name Description
Int32 i
Returns
Type Description
Vector3d

NearestVertex(Vector3d)

Find nearest vertex to point p

Declaration
public int NearestVertex(Vector3d p)
Parameters
Type Name Description
Vector3d p
Returns
Type Description
Int32

Neighbours(Int32)

Declaration
public Index2i Neighbours(int i)
Parameters
Type Name Description
Int32 i
Returns
Type Description
Index2i

OpeningAngleDeg(Int32)

Compute opening angle at vertex i in degrees

Declaration
public double OpeningAngleDeg(int i)
Parameters
Type Name Description
Int32 i
Returns
Type Description
Double

PointAt(Int32, Double)

Declaration
public Vector3d PointAt(int iSegment, double fSegT)
Parameters
Type Name Description
Int32 iSegment
Double fSegT
Returns
Type Description
Vector3d

RemoveVertex(Int32)

Declaration
public void RemoveVertex(int idx)
Parameters
Type Name Description
Int32 idx

ResampleSharpTurns(Double, Double, Double)

Resample curve so that:

  • if opening angle at vertex is > sharp_thresh, we emit two more vertices at +/- corner_t, where the t is used in prev/next lerps
  • if opening angle is > flat_thresh, we skip the vertex entirely (simplification) This is mainly useful to get nicer polylines to use as the basis for (eg) creating 3D tubes, rendering, etc

[TODO] skip tiny segments?

Declaration
public DCurve3 ResampleSharpTurns(double sharp_thresh = 90, double flat_thresh = 189, double corner_t = 0.01)
Parameters
Type Name Description
Double sharp_thresh
Double flat_thresh
Double corner_t
Returns
Type Description
DCurve3

Reverse()

Declaration
public void Reverse()

SegmentItr()

Declaration
public IEnumerable<Segment3d> SegmentItr()
Returns
Type Description
IEnumerable<Segment3d>

SetVertex(Int32, Vector3d)

Declaration
public void SetVertex(int i, Vector3d v)
Parameters
Type Name Description
Int32 i
Vector3d v

SetVertices(VectorArray3d)

Declaration
public void SetVertices(VectorArray3d v)
Parameters
Type Name Description
VectorArray3d v

SetVertices(IEnumerable<Vector3d>)

Declaration
public void SetVertices(IEnumerable<Vector3d> v)
Parameters
Type Name Description
IEnumerable<Vector3d> v

SetVertices(List<Vector3d>, Boolean)

Declaration
public void SetVertices(List<Vector3d> vertices, bool bTakeOwnership)
Parameters
Type Name Description
List<Vector3d> vertices
Boolean bTakeOwnership

Tangent(Int32)

Declaration
public Vector3d Tangent(int i)
Parameters
Type Name Description
Int32 i
Returns
Type Description
Vector3d

Implements