/// <summary>
/// Returns the point within the section based off of subsection information
/// </summary>
/// <param name="subsec"></param>
/// <returns></returns>
public PointClass LocateSubSection(SubSectionClass subsec)
{
PointClass LocateSubSectionOut = new PointClass();
LineClass right = new LineClass();
LineClass bottom = new LineClass();
LineClass second = new LineClass();
LineClass first = new LineClass();
PointClass temp = new PointClass();
if (IsValid())
{
bottom.CreateFromPoints(Corners[2], Corners[3]);
right.CreateFromPoints(Corners[0], Corners[3]);
first.CreateSlopePoint(right.M, bottom.CPoint((Corners[3].X - bottom.Adjustment(subsec.ROffset().X))));
second.CreateSlopePoint(bottom.M, right.CPoint((Corners[3].X + (Math.Sign(right.M) * right.Adjustment(subsec.ROffset().Y)))));
temp = MeasureFunctions.LineIntercection(first, second);
LocateSubSectionOut = temp;
}
else
{
temp.X = -1;
temp.Y = -1;
LocateSubSectionOut = temp;
}
return(LocateSubSectionOut);
}
/// <summary>
/// Return the subsection for a given point within the section based off midpoints.
/// </summary>
/// <param name="Point"></param>
/// <returns></returns>
public SubSectionClass Point2SubSec(PointClass Point)
{
SubSectionClass tSubSec = new SubSectionClass();
PointClass Center = new PointClass();
LineClass LineOne = new LineClass();
LineClass LineTwo = new LineClass();
LineClass HoriLine = new LineClass();
LineClass VertLine = new LineClass();
LineClass SubLineOne = new LineClass();
LineClass SubLineTwo = new LineClass();
LineOne.CreateFromPoints(Corners[0], Corners[2]);
LineTwo.CreateFromPoints(Corners[1], Corners[3]);
Center = MeasureFunctions.LineIntercection(LineOne, LineTwo);
LineOne.CreateFromPoints(Corners[2], Corners[3]);
LineTwo.CreateFromPoints(Corners[0], Corners[3]);
HoriLine.CreateSlopePoint(LineOne.M, Center);
VertLine.CreateSlopePoint(LineTwo.M, Center);
// find first part
if (HoriLine.CPoint(Point.X).Y >= Point.Y)
{
if (VertLine.CpointXfromY(Point.Y).X >= Point.X)
{
tSubSec.FirstPart = "C";
}
else
{
tSubSec.FirstPart = "D";
}
}
else if (VertLine.CpointXfromY(Point.Y).X >= Point.X)
{
tSubSec.FirstPart = "B";
}
else
{
tSubSec.FirstPart = "A";
}
// find second part of Subsection
// start by defining center point lines
if (tSubSec.FirstPart == "A")
{
LineOne.CreateFromPoints(Corners[0], Corners[1]);
SubLineOne.CreateFromPoints(Corners[0], Corners[2]);
SubLineTwo.CreateFromPoints(MeasureFunctions.LineIntercection(VertLine, LineOne), MeasureFunctions.LineIntercection(HoriLine, LineTwo));
Center = MeasureFunctions.LineIntercection(SubLineOne, SubLineTwo);
LineOne.CreateFromPoints(Corners[2], Corners[3]);
HoriLine.CreateSlopePoint(LineOne.M, Center);
VertLine.CreateSlopePoint(LineTwo.M, Center);
}
else if (tSubSec.FirstPart == "B")
{
LineOne.CreateFromPoints(Corners[0], Corners[1]);
LineTwo.CreateFromPoints(Corners[1], Corners[2]);
SubLineOne.CreateFromPoints(Corners[1], Corners[3]);
SubLineTwo.CreateFromPoints(MeasureFunctions.LineIntercection(VertLine, LineOne), MeasureFunctions.LineIntercection(HoriLine, LineTwo));
Center = MeasureFunctions.LineIntercection(SubLineOne, SubLineTwo);
LineOne.CreateFromPoints(Corners[2], Corners[3]);
LineTwo.CreateFromPoints(Corners[0], Corners[3]);
HoriLine.CreateSlopePoint(LineOne.M, Center);
VertLine.CreateSlopePoint(LineTwo.M, Center);
}
else if (tSubSec.FirstPart == "C")
{
LineTwo.CreateFromPoints(Corners[1], Corners[2]);
SubLineOne.CreateFromPoints(Corners[0], Corners[2]);
SubLineTwo.CreateFromPoints(MeasureFunctions.LineIntercection(VertLine, LineOne), MeasureFunctions.LineIntercection(HoriLine, LineTwo));
Center = MeasureFunctions.LineIntercection(SubLineOne, SubLineTwo);
LineOne.CreateFromPoints(Corners[2], Corners[3]);
HoriLine.CreateSlopePoint(LineOne.M, Center);
VertLine.CreateSlopePoint(LineTwo.M, Center);
}
else if (tSubSec.FirstPart == "D")
{
SubLineOne.CreateFromPoints(Corners[1], Corners[3]);
SubLineTwo.CreateFromPoints(MeasureFunctions.LineIntercection(VertLine, LineOne), MeasureFunctions.LineIntercection(HoriLine, LineTwo));
Center = MeasureFunctions.LineIntercection(SubLineOne, SubLineTwo);
HoriLine.CreateSlopePoint(LineOne.M, Center);
VertLine.CreateSlopePoint(LineTwo.M, Center);
}
// sub lines found and sub centers found
// find second part now
if (HoriLine.CPoint(Point.X).Y >= Point.Y)
{
if ((VertLine.CpointXfromY(Point.Y).X >= Point.X))
{
tSubSec.SecondPart = "C";
}
else
{
tSubSec.SecondPart = "D";
}
}
else if (VertLine.CpointXfromY(Point.Y).X >= Point.X)
{
tSubSec.SecondPart = "B";
}
else
{
tSubSec.SecondPart = "A";
}
return(tSubSec);
}
