/// <summary>
/// The opposite side line is the line opposite the angle between this line and the
/// adjacent line. This line, the adjacent line and the opposite line form a right
/// triangle. Where the right angle of the right triangle is at the intersection of
/// the adjacent line and the opposite side line.
///
/// Use this method to get the position on the line of the opposite side line as
/// the length of the adjacent line is varied.
/// </summary>
/// <param name="AdjacentSideLength"></param>
/// <returns></returns>
public LineCoordinates CalcOppositeSideLine(double AdjacentSideLength)
{
var adjSide = new HorizontalLineCoordinates(this.Start, AdjacentSideLength);
var angle = Math.Abs(this.Angle);
var radians = angle * (Math.PI / 180);
var tan = Math.Tan(radians);
// length of the opposite side line.
var oppLgth = AdjacentSideLength * tan;
// the end point of the opposite side line. Where the end point is either
// above the adjacent line or below it. Depending on if the line ( the
// hypotenuse ) goes up or down.
Point oppEnd;
if (this.SlopesUp == true)
{
oppEnd = new Point(adjSide.End.X, adjSide.End.Y - oppLgth + 1.00);
_OppositeSideLine = new LineCoordinates(oppEnd, adjSide.End);
}
else
{
oppEnd = new Point(adjSide.End.X, adjSide.End.Y + oppLgth - 1.00);
_OppositeSideLine = new LineCoordinates(adjSide.End, oppEnd);
}
return(_OppositeSideLine);
}
public LineCoordinates CalcAdjacentSideLine(double OppLgth)
{
// calc the adj side line lgth from the angle of this line and the given
// opposite side lgth.
var angle = Math.Abs(this.Angle);
var radians = angle * (Math.PI / 180);
var tan = Math.Tan(radians);
var adjLgth = OppLgth / tan;
var adjLine = new HorizontalLineCoordinates(this.Start, adjLgth);
return(adjLine);
}
