Mixed-Language Development & SWIG

Listing 6: Line intersection.

class Line
  def intersection(other)
    x = ((other.yintercept - self.yintercept)/(self.slope -
other.slope))
    y = ( self.yintercept + x*self.slope)
    if ( ((x >= other.getStart.x) && (other.getEnd.x >= x) ) ||
         ((x >= other.getEnd.x)   && (other.getStart.x >= x)) )
        return Point.new(x, y)
    end
  end
end