/// <summary>
/// Function to join the 2 lines at the point where they do / would intersect. If they do then
/// the lines are clipped to remove the smallest part of the line. Returns false if they
/// cannot be joined.
/// </summary>
/// <param name="Other">The other line</param>
public bool Join(C2DLine Other)
{
var p1 = point;
var p2 = GetPointTo();
var p3 = Other.point;
var p4 = Other.GetPointTo();
var Ua = (p4.x - p3.x) * (p1.y - p3.y) - (p4.y - p3.y) * (p1.x - p3.x);
var Ub = (p2.x - p1.x) * (p1.y - p3.y) - (p2.y - p1.y) * (p1.x - p3.x);
var dDenominator = (p4.y - p3.y) * (p2.x - p1.x) - (p4.x - p3.x) * (p2.y - p1.y);
if (dDenominator == 0)
{
return(false);
}
Ua = Ua / dDenominator;
Ub = Ub / dDenominator;
var IntPt = new C2DPoint(p1.x + Ua * (p2.x - p1.x), p1.y + Ua * (p2.y - p1.y));
if (Ua >= 0.5)
{
this.SetPointTo(IntPt);
}
else
{
this.SetPointFrom(IntPt);
}
if (Ub >= 0.5)
{
Other.SetPointTo(IntPt);
}
else
{
Other.SetPointFrom(IntPt);
}
return(true);
}
/// <summary>
/// Function to join the 2 lines at the point where they do / would intersect. If they do then
/// the lines are clipped to remove the smallest part of the line. Returns false if they
/// cannot be joined.
/// </summary>
/// <param name="Other">The other line</param>
public bool Join(C2DLine Other)
{
C2DPoint p1 = point;
C2DPoint p2 = GetPointTo();
C2DPoint p3 = Other.point;
C2DPoint p4 = Other.GetPointTo();
double Ua = (p4.x - p3.x) * (p1.y - p3.y) - (p4.y - p3.y) * (p1.x - p3.x);
double Ub = (p2.x - p1.x) * (p1.y - p3.y) - (p2.y - p1.y) * (p1.x - p3.x);
double dDenominator = (p4.y - p3.y) * (p2.x - p1.x) - (p4.x - p3.x) * (p2.y - p1.y);
if (dDenominator == 0)
return false;
Ua = Ua / dDenominator;
Ub = Ub / dDenominator;
C2DPoint IntPt = new C2DPoint(p1.x + Ua * (p2.x - p1.x), p1.y + Ua * (p2.y - p1.y));
if ( Ua >=0.5)
this.SetPointTo( IntPt );
else
this.SetPointFrom( IntPt );
if ( Ub >=0.5)
Other.SetPointTo( IntPt );
else
Other.SetPointFrom( IntPt );
return true;
}
