public void SnapToOriginInPlace(IList <C2DPoint> input)
{
var minXy = MinMax(input);
for (var i = 0; i < input.Count; ++i)
{
input[i] = new C2DPoint(input[i].X - minXy.Item1, input[i].Y - minXy.Item2);
}
var poly = new C2DPolygon(input.ToList(), true);
poly.RandomPerturb();
var pointsCopy = new C2DPointSet();
poly.GetPointsCopy(pointsCopy);
for (var i = 0; i < pointsCopy.Count; ++i)
{
input[i] = pointsCopy[i];
}
}
/// <summary>
/// True if part of this line is above the other. Returns the point
/// on this and on the other.
/// </summary>
/// <param name="Other"></param>
/// <param name="dVerticalDistance"></param>
/// <param name="ptOnThis"></param>
/// <param name="ptOnOther"></param>
/// <returns></returns>
public bool OverlapsAbove(C2DLine Other, ref double dVerticalDistance,
C2DPoint ptOnThis, C2DPoint ptOnOther)
{
// Get the 2 points for both lines
C2DPoint OtherTo = new C2DPoint(Other.point.x + Other.vector.i, Other.point.y + Other.vector.j);
C2DPoint ThisTo = new C2DPoint(point.x + vector.i, point.y + vector.j);
// Make an interval for both in the x plane
CInterval iThis = new CInterval( point.x, point.x);
iThis.ExpandToInclude( ThisTo.x );
CInterval iOther = new CInterval( Other.point.x, Other.point.x);
iOther.ExpandToInclude( OtherTo.x );
// This is an interval for the overlap between the 2
CInterval iOverlap = new CInterval();
// If there is an overlap...
if (iThis.Overlaps(iOther, iOverlap))
{
double dThisYMin;
double dThisYMax;
double dOtherYMin;
double dOtherYMax;
// If the line is vertical then y at the x min / max can be set to the ends of the line.
if (vector.i == 0)
{
dThisYMin = point.y;
dThisYMax = ThisTo.y;
}
else // otherwise, caluclate the y values at the interval ends
{
dThisYMin = GetY(iOverlap.dMin);
dThisYMax = GetY(iOverlap.dMax);
}
// Now do the same for the other line
if (Other.vector.i == 0)
{
dOtherYMin = Other.point.y;
dOtherYMax = OtherTo.y;
}
else
{
dOtherYMin = Other.GetY(iOverlap.dMin);
dOtherYMax = Other.GetY(iOverlap.dMax);
}
// Now find the distance between the 2 at the ends
double dDistMin = dThisYMin - dOtherYMin;
double dDistMax = dThisYMax - dOtherYMax;
// If they are both > 0 then no intersection
if ( (dDistMin > 0) && (dDistMax > 0))
{
dDistMin = Math.Abs( dDistMin);
dDistMax = Math.Abs(dDistMax);
// find which one is smallest
if ( dDistMin > dDistMax)
{
dVerticalDistance = dDistMax; // distance at the max is smallest
ptOnThis.x = iOverlap.dMax;
ptOnThis.y = dThisYMax;
ptOnOther.x = iOverlap.dMax;
ptOnOther.y = dOtherYMax;
}
else
{
dVerticalDistance = dDistMin; // distance at the min is smallest
ptOnThis.x = iOverlap.dMin;
ptOnThis.y = dThisYMin;
ptOnOther.x = iOverlap.dMin;
ptOnOther.y = dOtherYMin;
}
return true;
}
else if ( (dDistMin < 0) && (dDistMax < 0)) // This is below.
{
return false;
}
else
{
// find the intersection.
dVerticalDistance = 0;
C2DPointSet pts = new C2DPointSet();
if(this.Crosses(Other, pts))
{
ptOnThis = pts[0];
ptOnOther = ptOnThis;
}
else
{
Debug.Assert(false);
}
}
return true;
}
else
{
return false;
}
}
/// <summary>
/// Returns the lines that make up this defined by the points which are assumed
/// to be on this line. i.e. splits the line up.
/// </summary>
/// <param name="PtsOnLine">The point set defining how this is to be broken up.</param>
/// <param name="LineSet">Output. The sub lines.</param>
public override void GetSubLines(List<C2DPoint> PtsOnLine, List<C2DLineBase> LineSet)
{
// if there are no points on the line to split on then add a copy of this and return.
int usPointsCount = PtsOnLine.Count;
if (usPointsCount == 0 )
{
LineSet.Add(new C2DLine(this));
}
else
{
C2DPointSet TempPts = new C2DPointSet();
TempPts.MakeCopy(PtsOnLine);
if (usPointsCount > 1) // They need sorting
{
// Now sort the points according to the order in which they will be encountered
TempPts.SortByDistance(point);
}
// Add the line from the start of this to the first.
LineSet.Add(new C2DLine(point, TempPts[0] ));
// Add all the sub lines.
for (int i = 1; i < usPointsCount; i++)
LineSet.Add(new C2DLine(TempPts[i - 1], TempPts[i]));
// Add the line from the last point on this to the end of this.
LineSet.Add(new C2DLine(TempPts[TempPts.Count - 1], GetPointTo()));
}
Debug.Assert(LineSet.Count == (PtsOnLine.Count + 1));
}
/// <summary>
/// Returns the routes (multiple lines or part polygons) either inside or
/// outside the polygons provided. These are based on the intersections
/// of the 2 polygons e.g. the routes / part polygons of one inside or
/// outside the other.
/// </summary>
/// <param name="Poly1">The first polygon.</param>
/// <param name="bP1RoutesInside">True if routes inside the second polygon are
/// required for the first polygon.</param>
/// <param name="Poly2">The second polygon.</param>
/// <param name="bP2RoutesInside">True if routes inside the first polygon are
/// required for the second polygon.</param>
/// <param name="Routes1">Output. Set of lines for the first polygon.</param>
/// <param name="Routes2">Output. Set of lines for the second polygon.</param>
/// <param name="CompleteHoles1">Output. Complete holes for the first polygon.</param>
/// <param name="CompleteHoles2">Output. Complete holes for the second polygon.</param>
/// <param name="grid">Contains the degenerate handling settings.</param>
public static void GetRoutes(C2DHoledPolyBase Poly1, bool bP1RoutesInside,
C2DHoledPolyBase Poly2, bool bP2RoutesInside,
C2DLineBaseSetSet Routes1, C2DLineBaseSetSet Routes2,
List<C2DPolyBase> CompleteHoles1, List<C2DPolyBase> CompleteHoles2,
CGrid grid)
{
if (Poly1.Rim.Lines.Count == 0 || Poly2.Rim.Lines.Count == 0)
{
Debug.Assert(false, "Polygon with no lines" );
return;
}
C2DPointSet IntPointsTemp = new C2DPointSet();
C2DPointSet IntPointsRim1 = new C2DPointSet();
C2DPointSet IntPointsRim2 = new C2DPointSet();
List<int> IndexesRim1 = new List<int>();
List<int> IndexesRim2 = new List<int>();
List<C2DPointSet> IntPoints1AllHoles = new List<C2DPointSet>();
List<C2DPointSet> IntPoints2AllHoles = new List<C2DPointSet>();
List<List<int>> Indexes1AllHoles = new List<List<int>>();
List<List<int>> Indexes2AllHoles = new List<List<int>>();
// std::vector<C2DPointSet* > IntPoints1AllHoles, IntPoints2AllHoles;
// std::vector<CIndexSet*> Indexes1AllHoles, Indexes2AllHoles;
int usP1Holes = Poly1.HoleCount;
int usP2Holes = Poly2.HoleCount;
// *** Rim Rim Intersections
Poly1.Rim.Lines.GetIntersections( Poly2.Rim.Lines,
IntPointsTemp, IndexesRim1, IndexesRim2,
Poly1.Rim.BoundingRect, Poly2.Rim.BoundingRect );
IntPointsRim1.AddCopy( IntPointsTemp );
IntPointsRim2.ExtractAllOf(IntPointsTemp);
// *** Rim Hole Intersections
for ( int i = 0 ; i < usP2Holes; i++)
{
Debug.Assert(IntPointsTemp.Count == 0);
IntPoints2AllHoles.Add(new C2DPointSet());
Indexes2AllHoles.Add( new List<int>() );
if (Poly1.Rim.BoundingRect.Overlaps( Poly2.GetHole(i).BoundingRect ))
{
Poly1.Rim.Lines.GetIntersections( Poly2.GetHole(i).Lines,
IntPointsTemp, IndexesRim1, Indexes2AllHoles[i],
Poly1.Rim.BoundingRect, Poly2.GetHole(i).BoundingRect);
IntPointsRim1.AddCopy( IntPointsTemp);
IntPoints2AllHoles[i].ExtractAllOf(IntPointsTemp);
}
}
// *** Rim Hole Intersections
for ( int j = 0 ; j < usP1Holes; j++)
{
Debug.Assert(IntPointsTemp.Count == 0);
IntPoints1AllHoles.Add( new C2DPointSet());
Indexes1AllHoles.Add( new List<int>());
if (Poly2.Rim.BoundingRect.Overlaps(Poly1.GetHole(j).BoundingRect))
{
Poly2.Rim.Lines.GetIntersections( Poly1.GetHole(j).Lines,
IntPointsTemp, IndexesRim2, Indexes1AllHoles[j],
Poly2.Rim.BoundingRect, Poly1.GetHole(j).BoundingRect);
IntPointsRim2.AddCopy( IntPointsTemp);
IntPoints1AllHoles[j].ExtractAllOf(IntPointsTemp);
}
}
// *** Quick Escape
bool bRim1StartInPoly2 = Poly2.Contains( Poly1.Rim.Lines[0].GetPointFrom() );
bool bRim2StartInPoly1 = Poly1.Contains( Poly2.Rim.Lines[0].GetPointFrom() );
if (IntPointsRim1.Count != 0 || IntPointsRim2.Count != 0 ||
bRim1StartInPoly2 || bRim2StartInPoly1 )
// pos no interaction
{
// *** Rim Routes
Poly1.Rim.GetRoutes( IntPointsRim1, IndexesRim1, Routes1,
bRim1StartInPoly2, bP1RoutesInside);
Poly2.Rim.GetRoutes( IntPointsRim2, IndexesRim2, Routes2,
bRim2StartInPoly1, bP2RoutesInside);
if( IntPointsRim1.Count % 2 != 0) // Must be even
{
grid.LogDegenerateError();
// Debug.Assert(false);
}
if( IntPointsRim2.Count % 2 != 0) // Must be even
{
grid.LogDegenerateError();
// Debug.Assert(false);
}
// *** Hole Hole Intersections
for (int h = 0 ; h < usP1Holes; h++)
{
for ( int k = 0 ; k < usP2Holes; k++)
{
Debug.Assert(IntPointsTemp.Count == 0);
C2DPolyBase pHole1 = Poly1.GetHole(h);
C2DPolyBase pHole2 = Poly2.GetHole(k);
if ( pHole1.BoundingRect.Overlaps( pHole2.BoundingRect) )
{
pHole1.Lines.GetIntersections( pHole2.Lines,
IntPointsTemp, Indexes1AllHoles[h], Indexes2AllHoles[k],
pHole1.BoundingRect, pHole2.BoundingRect);
IntPoints1AllHoles[h].AddCopy( IntPointsTemp);
IntPoints2AllHoles[k].ExtractAllOf(IntPointsTemp);
}
}
}
// *** Hole Routes
for (int a = 0 ; a < usP1Holes; a++)
{
C2DPolyBase pHole = Poly1.GetHole(a);
if ( IntPoints1AllHoles[a].Count % 2 != 0) // Must be even
{
grid.LogDegenerateError();
// Debug.Assert(false);
}
if (pHole.Lines.Count != 0)
{
bool bHole1StartInside = Poly2.Contains( pHole.Lines[0].GetPointFrom() );
if ( IntPoints1AllHoles[a].Count == 0)
{
if ( bHole1StartInside == bP1RoutesInside)
CompleteHoles1.Add( new C2DPolyBase(pHole) );
}
else
{
pHole.GetRoutes( IntPoints1AllHoles[a], Indexes1AllHoles[a], Routes1,
bHole1StartInside, bP1RoutesInside);
}
}
}
// *** Hole Routes
for (int b = 0 ; b < usP2Holes; b++)
{
C2DPolyBase pHole = Poly2.GetHole(b);
if ( IntPoints2AllHoles[b].Count % 2 != 0) // Must be even
{
grid.LogDegenerateError();
// Debug.Assert(false);
}
if (pHole.Lines.Count != 0)
{
bool bHole2StartInside = Poly1.Contains( pHole.Lines[0].GetPointFrom() );
if ( IntPoints2AllHoles[b].Count == 0)
{
if ( bHole2StartInside == bP2RoutesInside)
CompleteHoles2.Add( new C2DPolyBase( pHole) );
}
else
{
pHole.GetRoutes( IntPoints2AllHoles[b], Indexes2AllHoles[b], Routes2,
bHole2StartInside, bP2RoutesInside);
}
}
}
}
//for (unsigned int i = 0 ; i < IntPoints1AllHoles.size(); i++)
// delete IntPoints1AllHoles[i];
//for (unsigned int i = 0 ; i < IntPoints2AllHoles.size(); i++)
// delete IntPoints2AllHoles[i];
//for (unsigned int i = 0 ; i < Indexes1AllHoles.size(); i++)
// delete Indexes1AllHoles[i];
//for (unsigned int i = 0 ; i < Indexes2AllHoles.size(); i++)
// delete Indexes2AllHoles[i];
}
/// <summary>
/// True if this crosses the ray, returns the intersection points.
/// </summary>
/// <param name="Ray">Ray to test for.</param>
/// <param name="IntersectionPts">Intersection points.</param>
public bool CrossesRay(C2DLine Ray, C2DPointSet IntersectionPts)
{
C2DPointSet IntPts = new C2DPointSet();
_Rim.CrossesRay(Ray, IntPts);
IntersectionPts.ExtractAllOf(IntPts);
for (int i = 0 ; i < _Holes.Count; i++)
{
if (_Holes[i].CrossesRay(Ray, IntPts))
{
double dDist = Ray.point.Distance(IntPts[0]);
int nInsert = 0;
while (nInsert < IntersectionPts.Count &&
Ray.point.Distance( IntersectionPts[nInsert]) < dDist )
{
nInsert++;
}
IntersectionPts.InsertRange(nInsert, IntPts);
}
}
return (IntersectionPts.Count > 0);
}
/// <summary>
/// True if this crosses the line.
/// </summary>
/// <param name="Line">Line to test for.</param>
/// <param name="IntersectionPts">Point set to recieve the intersections.</param>
public bool Crosses(C2DLineBase Line, C2DPointSet IntersectionPts)
{
C2DPointSet IntPts = new C2DPointSet();
_Rim.Crosses(Line, IntPts);
for (int i = 0 ; i < _Holes.Count; i++)
{
_Holes[i].Crosses(Line, IntPts);
}
bool bResult = (IntPts.Count != 0);
IntersectionPts.ExtractAllOf(IntPts);
return (bResult);
}
/// <summary>
/// Returns the routes (multiple lines or part polygons) either inside or
/// outside the polygons provided. These are based on the intersections
/// of the 2 polygons e.g. the routes / part polygons of one inside or
/// outside the other.
/// </summary>
/// <param name="Poly1">The first polygon.</param>
/// <param name="bP1RoutesInside">True if routes inside the second polygon are
/// required for the first polygon.</param>
/// <param name="Poly2">The second polygon.</param>
/// <param name="bP2RoutesInside">True if routes inside the first polygon are
/// required for the second polygon.</param>
/// <param name="Routes1">Output. Set of lines for the first polygon.</param>
/// <param name="Routes2">Output. Set of lines for the second polygon.</param>
public static void GetRoutes(C2DPolyBase Poly1, bool bP1RoutesInside,
C2DPolyBase Poly2, bool bP2RoutesInside,
C2DLineBaseSetSet Routes1, C2DLineBaseSetSet Routes2)
{
// Set up a collection of intersected points, and corresponding indexes.
C2DPointSet IntPoints = new C2DPointSet();
List<int> Indexes1 = new List<int>();
List<int> Indexes2 = new List<int>();
// Use the line collections in each shape to find the intersections between them.
Poly1.Lines.GetIntersections(Poly2.Lines, IntPoints,
Indexes1, Indexes2,
Poly1.BoundingRect, Poly2.BoundingRect);
// Make a copy of the point set because this will be sorted by line index in the
// Get routes function later. We need an unsorted set for each polygon.
C2DPointSet IntPointsCopy = new C2DPointSet();
IntPointsCopy.MakeCopy(IntPoints);
// Find out whether the first poly starts inside the second.
bool bP1StartInside = Poly2.Contains(Poly1.Lines[0].GetPointFrom());
// Find out if poly 2 starts inside poly 1.
bool bP2StartInside = Poly1.Contains(Poly2.Lines[0].GetPointFrom());
if (IntPoints.Count == 0 && !bP1StartInside && !bP2StartInside)
return; // No interaction between the 2.
// Get the routes of poly 1 inside / outside the other, passing the unsorted
// intersection points and polygon1 intersection indexes.
Poly1.GetRoutes(IntPoints, Indexes1, Routes1, bP1StartInside, bP1RoutesInside);
// Do the same for poly 2 but pass it the unsorted copy of the intersection points
// So that they correspond to the indexes.
Poly2.GetRoutes(IntPointsCopy, Indexes2, Routes2, bP2StartInside, bP2RoutesInside);
}
/// <summary>
/// True if the point is in the shape.
/// </summary>
/// <param name="pt">The point to test set.</param>
public bool Contains(C2DPoint pt)
{
if (!BoundingRect.Contains(pt))
return false;
C2DPointSet IntersectedPts = new C2DPointSet ();
C2DLine Ray = new C2DLine(pt, new C2DVector(BoundingRect.Width(), 0.000001)); // Make sure to leave
if (!this.Crosses(Ray, IntersectedPts))
return false;
else
{
IntersectedPts.SortByDistance(Ray.point);
if ( IntersectedPts[0].PointEqualTo(pt))
{
// For integers, the pt can start On a line, meaning it's INSIDE, but the ray could cross again
// so just return true. Because the equality test is really a test for proximity, this leads to the
// possibility that a point could lie just outside the shape but be considered to be inside. This would
// only be a problem with very small shapes that are a very long way from the origin. E.g. a 1m2 object
// 1 million metres from the origin and a point 0.1mm away from the edge would give rise to a relative
// difference of 0.0001 / 1000000 = 0.000000001 which would just be consider to be inside.
return true;
}
else
{
// Return true if the ray
return (IntersectedPts.Count & (int)1) > 0;
}
}
}
/// <summary>
/// Returns the routes (collection of lines and sublines) either inside or outside another
/// Given the intersection points.
/// </summary>
/// <param name="IntPts">The intersection points of this with the other polygon.</param>
/// <param name="IntIndexes">The corresponding line indexes.</param>
/// <param name="Routes">Output. The routes to get the result.</param>
/// <param name="bStartInside">True if this polygon starts inside the other.</param>
/// <param name="bRoutesInside">True if we require routes of this polygon inside the other.</param>
public void GetRoutes(C2DPointSet IntPts, List<int> IntIndexes,
C2DLineBaseSetSet Routes, bool bStartInside, bool bRoutesInside)
{
// Make sure the intersection indexes and points are the same size.
if (IntIndexes.Count != IntPts.Count )
{
Debug.Assert(false);
return;
}
// Set up a new collection of routes.
C2DLineBaseSetSet NewRoutes = new C2DLineBaseSetSet();
// If the polygon has no points then return.
if ( _Lines.Count < 1)
return;
// Sort the intersections by index so we can go through them in order.
IntPts.SortByIndex( IntIndexes );
// Set the inside / outside flag to the same as the start inside / outside flag.
bool bInside = bStartInside;
// If we are inside and want route inside or outside and want routes outside then add a new route.
if (bInside == bRoutesInside)
{
NewRoutes.Add(new C2DLineBaseSet());
}
// The current index of the intersects.
int usCurrentIntIndex = 0;
// cycle through the lines on the polygon.
for (int i = 0 ; i < Lines.Count ; i++)
{
// Set up a list of intersection points on this line only.
C2DPointSet IntsOnLine = new C2DPointSet();
// Cycle through all intersections on this line (leaving the usCurrentIntIndex at the next intersected line).
while ( usCurrentIntIndex < IntIndexes.Count && IntIndexes[usCurrentIntIndex] == i)
{
// Add a copy of the points on this line that are intersections
IntsOnLine.AddCopy( IntPts[ usCurrentIntIndex ] );
usCurrentIntIndex++;
}
// If the line in question intersects the other poly then we have left / entered.
if ( IntsOnLine.Count > 0 )
{
C2DLineBaseSet SubLines = new C2DLineBaseSet();
Lines[i].GetSubLines( IntsOnLine, SubLines );
while (SubLines.Count > 1)
{
if (bInside == bRoutesInside)
{
// We have 1. Left and want route in. OR 2. Entered and want routes out.
NewRoutes[NewRoutes.Count - 1].Add( SubLines.ExtractAt(0) );
bInside = true ^ bRoutesInside;
}
else
{
NewRoutes.Add(new C2DLineBaseSet());
bInside = false ^ bRoutesInside;
SubLines.RemoveAt(0);
}
}
if (bInside == bRoutesInside)
NewRoutes[NewRoutes.Count - 1].Add( SubLines.ExtractAt(SubLines.Count - 1 ) );
else
SubLines.RemoveAt(SubLines.Count - 1);
}
// Otherwise, if we are e.g. inside and want routes in the keep adding the end poitn of the line.
else if (bInside == bRoutesInside)
{
NewRoutes[NewRoutes.Count - 1].AddCopy( Lines[i] );
}
}
// Put all the new routes into the provided collection.
Routes.ExtractAllOf(NewRoutes);
}
/// <summary>
/// True if it crosses the ray. Provides the intersection points.
/// </summary>
/// <param name="Ray">The infinite line.</param>
/// <param name="IntersectionPts">Output. The intersection points.</param>
public bool CrossesRay(C2DLine Ray, C2DPointSet IntersectionPts)
{
double dDist = Ray.point.Distance(BoundingRect.GetCentre());
C2DLine LineTemp = new C2DLine(Ray);
LineTemp.vector.SetLength(dDist + BoundingRect.Width() + BoundingRect.Height());
return Crosses(LineTemp, IntersectionPts);
}
/// <summary>
/// True if it crosses the line. Provides the intersection points.
/// </summary>
/// <param name="Line">The other line.</param>
/// <param name="IntersectionPts">Output. The intersection points.</param>
public bool Crosses(C2DLineBase Line, List<C2DPoint> IntersectionPts)
{
C2DRect LineRect = new C2DRect();
Line.GetBoundingRect( LineRect);
if (!BoundingRect.Overlaps(LineRect))
return false;
Debug.Assert(Lines.Count == LineRects.Count);
if(Lines.Count != LineRects.Count)
return false;
C2DPointSet IntersectionTemp = new C2DPointSet();
bool bResult = false;
for (int i = 0; i < this.Lines.Count; i++)
{
if (LineRects[i].Overlaps(LineRect) &&
Lines[i].Crosses(Line, IntersectionTemp as List<C2DPoint>))
{
bResult = true;
}
}
IntersectionPts.InsertRange(0, IntersectionTemp);
return bResult;
}
/// <summary>
/// True if it entirely contains the line.
/// </summary>
/// <param name="Line">The line to test.</param>
public bool Contains(C2DLineBase Line)
{
if (!Contains(Line.GetPointFrom()))
return false;
C2DPointSet Pts = new C2DPointSet();
return !Crosses(Line, Pts);
}
/// <summary>
/// Returns the lines that go to make this up based on the set of points
/// provided which are assumed to be on the line.
/// </summary>
/// <param name="PtsOnLine">The points defining how the line is to be split.</param>
/// <param name="LineSet">The line set to recieve the result.</param>
public override void GetSubLines(List<C2DPoint> PtsOnLine, List<C2DLineBase> LineSet)
{
// if there are no points on the line to split on then add a copy of this and return.
int usPointsCount = PtsOnLine.Count;
if (usPointsCount == 0 )
{
LineSet.Add(new C2DArc(this));
return;
}
else
{
// Make a copy of the points for sorting.
C2DPointSet TempPts = new C2DPointSet();
TempPts.MakeCopy(PtsOnLine);
if (usPointsCount > 1) // They need sorting
{
// Make a line from the mid point of my line to the start
C2DLine CenToStart = new C2DLine( Line.GetMidPoint(), Line.point );
// Now sort the points according to the order in which they will be encountered
if (ArcOnRight)
TempPts.SortByAngleToLeft( CenToStart );
else
TempPts.SortByAngleToRight( CenToStart );
}
C2DPoint ptCentre = new C2DPoint(GetCircleCentre());
// Add the line from the start of this to the first.
C2DLine NewLine = new C2DLine( Line.point, TempPts[0] );
LineSet.Add(new C2DArc(NewLine, Radius,
NewLine.IsOnRight(ptCentre), ArcOnRight));
// Add all the sub lines.
for (int i = 1; i < usPointsCount; i++)
{
NewLine.Set(TempPts[i - 1], TempPts[i]);
LineSet.Add(new C2DArc(NewLine, Radius,
NewLine.IsOnRight(ptCentre), ArcOnRight));
}
// Add the line from the last point on this to the end of this.
NewLine.Set(TempPts[TempPts.Count - 1], Line.GetPointTo());
LineSet.Add(new C2DArc(NewLine, Radius,
NewLine.IsOnRight(ptCentre), ArcOnRight));
}
}