public static PointD ToCartesian(RadialPointD location, PointD origin)
{
PointD p = new PointD();
p.X = location.R * Math.Cos(location.Theta);
p.Y = location.R * Math.Sin(location.Theta);
return p + origin;
}
public static PointD UnitVector(PointD vector)
{
if (vector.Magnitude() < 0.0001)
return PointD.Empty;
else
return vector / vector.Magnitude();
}
public static System.Drawing.Rectangle PointBounds(PointD point1, PointD point2)
{
double left = Math.Min(point1.X, point2.X);
double top = Math.Min(point1.Y, point2.Y);
double right = Math.Max(point1.X, point2.X);
double bottom = Math.Max(point1.Y, point2.Y);
return new System.Drawing.Rectangle((int)left, (int)top, (int)(right - left), (int)(bottom - top));
}
public static PointD Orthogonal(PointD a)
{
PointD newPoint = new PointD();
double temp = -a.Y;
newPoint.Y = a.X;
newPoint.X = temp;
return newPoint;
}
public static double DotProduct(PointD a, PointD b)
{
return a.X * b.X + a.Y * b.Y;
}
public static RadialPointD ToPolar(PointD location, PointD origin)
{
PointD v = location - origin;
RadialPointD n = new RadialPointD();
n.m_r = v.Magnitude();
n.m_theta = Math.Atan2(v.Y, v.X);
return n;
}