public int belongsToCircle(MyPoint other)
{
if ((Center.distance(other) - radius) < 0.000001)
{
return(0);
}
if (Center.distance(other) > radius)
{
return(-1);
}
return(1);
}
public Circle(MyPoint p1, MyPoint p2, MyPoint p3)
{
try
{
double x = (p3.getX() * p3.getX() * (p1.getY() - p2.getY()) + (p1.getX() * p1.getX() + (p1.getY() - p2.getY()) * (p1.getY() - p3.getY()))
* (p2.getY() - p3.getY()) + p2.getX() * p2.getX() * (-p1.getY() + p3.getY()))
/ (2 * (p3.getX() * (p1.getY() - p2.getY()) + p1.getX() * (p2.getY() - p3.getY()) + p2.getX() * (-p1.getY() + p3.getY())));
double y = (p2.getY() + p3.getY()) / 2 - (p3.getX() - p2.getX()) / (p3.getY() - p2.getY()) * (x - (p2.getX() + p3.getX()) / 2);
Center = new MyPoint(x, y);
radius = Center.distance(p1);
}
catch (Exception e)
{
MessageBox.Show("Error creating circle with three MyPoints: " + e.ToString());
}
}
public Circle(MyPoint p1, MyPoint p2, MyPoint p3)
{
try
{
double x = (p3.getX() * p3.getX() * (p1.getY() - p2.getY()) + (p1.getX() * p1.getX() + (p1.getY() - p2.getY()) * (p1.getY() - p3.getY()))
* (p2.getY() - p3.getY()) + p2.getX() * p2.getX() * (-p1.getY() + p3.getY()))
/ (2 * (p3.getX() * (p1.getY() - p2.getY()) + p1.getX() * (p2.getY() - p3.getY()) + p2.getX() * (-p1.getY() + p3.getY())));
double y = (p2.getY() + p3.getY()) / 2 - (p3.getX() - p2.getX()) / (p3.getY() - p2.getY()) * (x - (p2.getX() + p3.getX()) / 2);
Center = new MyPoint(x, y);
radius = Center.distance(p1);
}
catch (Exception e)
{
MessageBox.Show("Error creating circle with three MyPoints: " + e.ToString());
}
}
public Circle(MyPoint first, MyPoint second)
{
Center = new MyPoint((first.getX() + second.getX()) / 2, (first.getY() + second.getY()) / 2);
radius = Center.distance(first);
}
public Circle(MyPoint first, MyPoint second)
{
Center = new MyPoint((first.getX() + second.getX()) / 2, (first.getY() + second.getY()) / 2);
radius = Center.distance(first);
}