long SquareDistance(HeatMapPoint p0, HeatMapPoint p1)
{
long x = p0.X - p1.X,
y = p0.Y - p1.Y;
return(x * x + y * y);
}
int CrossProduct(HeatMapPoint o, HeatMapPoint a, HeatMapPoint b)
{
return((a.X - o.X) * (b.Y - o.Y) - (a.Y - o.Y) * (b.X - o.X));
}
protected bool Equals(HeatMapPoint other)
{
return(X == other.X && Y == other.Y);
}