private static int GetNewX(IList <Point> points, int y, int outerPtIndex, int outerY)
{
int newX;
if (outerY <= y || outerPtIndex == 0)
{
newX = points[outerPtIndex].GetIntX();
}
else
{
//if we are here we have found the first outerY where outerY > y and there has to be an inner point as well
var innerPtIndex = outerPtIndex - 1;
var innerY = points[innerPtIndex].GetIntY();
if (innerY == y)
{
newX = points[innerPtIndex].GetIntX();
}
else
{
var innerX = points[innerPtIndex].GetIntX();
var outerX = points[outerPtIndex].GetIntX();
//this check is important otherwise line creation may fail
if (innerX == outerX)
{
newX = innerX;
}
else
{
var lineEquation = LineEquation2D.Get2DLineEquation(innerX, innerY, outerX, outerY);
newX = Convert.ToInt32(lineEquation.GetXValueForY(y));
}
}
}
return(newX);
}
public LinePtsProcessor(IEnumerable <Point> initializingPts)
{
var xYPts = GetReOrderedPoints(initializingPts);
_lineEqn = StraightLineProcessor.Get2DStraightLineFromDataConstants(xYPts);
}
