//sub
private Line SetEachMainAxis(Vector3d guide, Polyline bound)
{
Line axis1 = PCXTools.PCXLongest(Pt, bound, guide);
Line axis2 = PCXTools.PCXLongest(Pt, bound, -guide);
bool isAxis1Longer = axis1.Length >= axis2.Length;
bool isAxis1Inside = IsLineInside(axis1, bound);
bool isAxis2Inside = IsLineInside(axis2, bound);
if (isAxis1Inside)
{
if (!isAxis2Inside)
{
return(axis1);
}
if (isAxis1Longer)
{
return(axis1);
}
return(axis2);
}
if (isAxis2Inside)
{
return(axis2);
}
return(new Line(Pt, Pt));
}
//point adding
private void AddMidPtWhenTriangle()
{
if (itSegments.Count != 3)
{
return;
}
List <InitialPt> triangleInit = new List <InitialPt>();
for (int i = 0; i < itSegments.Count; i++)
{
Vector3d perpFromSegment = itSegments[i].Line.UnitTangent;
perpFromSegment.Rotate(Math.PI / 2, Vector3d.ZAxis);
for (int j = 0; j < itSegments.Count; j++)
{
if (i == j)
{
continue;
}
Line pcxLine = PCXTools.PCXStrict(itSegments[j].Line.PointAt(0.5), boundary, -perpFromSegment);
Point3d pointToSeg = pcxLine.To;
if (pcxLine.Length == 0 || !PCXTools.IsPtOnLine(pointToSeg, itSegments[i].Line, 0.5))
{
continue;
}
Vector3d perpVec = pcxLine.From - pcxLine.To;
initialPts.Add(new InitialPt(pointToSeg, itSegments[i].Line.UnitTangent, perpVec));
}
}
}
//main
public void SetMainAxis(Polyline boundary)
{
Line alignMain = SetEachMainAxis(AlignGuide, boundary);
Line perpMain = PCXTools.PCXLongest(Pt, boundary, PerpGuide);
if (alignMain.Length > perpMain.Length)
{
MainAxis = alignMain;
SubAxis = perpMain;
}
else
{
MainAxis = perpMain;
SubAxis = alignMain;
}
}
public static bool IsIntersect(Line line1, Line line2, bool checkCoincidence)
{
//seive1: xRange
double xHi1 = Math.Max(line1.FromX, line1.ToX);
double xLo1 = Math.Min(line1.FromX, line1.ToX);
double xHi2 = Math.Max(line2.FromX, line2.ToX);
double xLo2 = Math.Min(line2.FromX, line2.ToX);
if (xHi1 > xHi2)
{
if (xLo1 > xHi2)
{
return(false);
}
}
if (xHi2 > xHi1)
{
if (xLo2 > xHi1)
{
return(false);
}
}
//seive2: yRange
double yHi1 = Math.Max(line1.FromY, line1.ToY);
double yLo1 = Math.Min(line1.FromY, line1.ToY);
double yHi2 = Math.Max(line2.FromY, line2.ToY);
double yLo2 = Math.Min(line2.FromY, line2.ToY);
if (yHi1 > yHi2)
{
if (yLo1 > yHi2)
{
return(false);
}
}
if (yHi2 > yHi1)
{
if (yLo2 > yHi1)
{
return(false);
}
}
//intersect check
Point3d crossPt = GetCrossPt(line1, line2);
if (crossPt == Point3d.Unset && checkCoincidence) //colinear check
{
if (PCXTools.IsPtOnLine(line2.From, line1, 0.5))
{
return(true);
}
if (PCXTools.IsPtOnLine(line2.To, line1, 0.5))
{
return(true);
}
return(false);
}
if (!checkCoincidence) //end point check
{
if (crossPt.DistanceTo(line1.From) < 0.5)
{
return(false);
}
if (crossPt.DistanceTo(line1.To) < 0.5)
{
return(false);
}
if (crossPt.DistanceTo(line2.From) < 0.5)
{
return(false);
}
if (crossPt.DistanceTo(line2.To) < 0.5)
{
return(false);
}
}
if (!PCXTools.IsPtOnLine(crossPt, line1, 0.5))
{
return(false);
}
if (!PCXTools.IsPtOnLine(crossPt, line2, 0.5))
{
return(false);
}
return(true);
}
