private bool IntersectsCoincidental(OrthoLine line, out Point intersection)
{
if ((this.Start <= line.Start && line.Start <= this.End) || (this.Start >= line.Start && line.Start >= this.End))
{
intersection = this.IsHorizontal ? new Point(line.Start, this.Offset) : new Point(this.Offset, line.Start);
return(true);
}
else if ((this.Start <= line.End && line.End <= this.End) || (this.Start >= line.End && line.End >= this.End))
{
intersection = this.IsHorizontal ? new Point(line.End, this.Offset) : new Point(this.Offset, line.End);
return(true);
}
else if ((line.Start <= this.Start && this.Start <= line.End) || (line.Start >= this.Start && this.Start >= line.End))
{
intersection = this.IsHorizontal ? new Point(this.Start, this.Offset) : new Point(this.Offset, this.Start);
return(true);
}
else if ((line.Start <= this.End && this.End <= line.End) || (line.Start >= this.End && this.End >= line.End))
{
intersection = this.IsHorizontal ? new Point(this.End, this.Offset) : new Point(this.Offset, this.End);
return(true);
}
else
{
intersection = Point.Origin;
return(false);
}
}
public bool Intersects(OrthoLine line, out Point intersection)
{
if (((this.IsHorizontal && line.IsHorizontal) || (this.IsVertical && line.IsVertical)))
{
if (this.Offset == line.Offset)
{
// Lines are coincidental horizontally
return(this.IntersectsCoincidental(line, out intersection));
}
else
{
intersection = Point.Origin;
return(false);
}
}
else if (IsBetween(this.Start, this.End, line.Offset) && IsBetween(line.Start, line.End, this.Offset))
{
// Lines intersect
if (this.IsHorizontal)
{
intersection = new Point(line.Offset, this.Offset);
}
else
{
intersection = new Point(this.Offset, line.Offset);
}
return(true);
}
else
{
// Parallel lines can't intersect
intersection = Point.Origin;
return(false);
}
}
