public StraightLine(Point2F p1, Point2F p2)
{
float a = p1.Y - p2.Y, b = p2.X - p1.X;
a_ = a;
b_ = b;
c_ = -(a * p1.X + b * p1.Y);
xInterval_ = new IntervalF(p1.X, p2.X);
yInterval_ = new IntervalF(p1.Y, p2.Y);
}
public bool IsOverlap(Point2F p)
{
return a_ * p.X + b_ * p.Y + c_ == 0 &&
xInterval_.InRange(p.X) && yInterval_.InRange(p.Y);
}
public Vector2F(Point2F to, Point2F from)
{
X = to.X - from.X;
Y = to.Y - from.Y;
}
public Vector2F(Point2F p)
{
X = p.X;
Y = p.Y;
}
public Point2F Offset(Point2F dp)
{
return new Point2F(X + dp.X, Y + dp.Y);
}
public bool Equals(Point2F p)
{
return p.X == X && p.Y == Y;
}