internal Circle_dt circumcircle()
{
double u = ((a.x - b.x) * (a.x + b.x) + (a.y - b.y) * (a.y + b.y)) / 2.0f;
double v = ((b.x - c.x) * (b.x + c.x) + (b.y - c.y) * (b.y + c.y)) / 2.0f;
double den = (a.x - b.x) * (b.y - c.y) - (b.x - c.x) * (a.y - b.y);
if (den == 0) // oops, degenerate case
{
circum = new Circle_dt(a, Double.PositiveInfinity);
}
else
{
Point_dt cen = new Point_dt((u * (b.y - c.y) - v * (a.y - b.y)) / den,
(v * (a.x - b.x) - u * (b.x - c.x)) / den);
circum = new Circle_dt(cen, cen.distance2(a));
}
return(circum);
}
/**
* Copy Constructor. <br />
* Creates a new Circle with same properties of <code>circ</code>.
* @param circ Circle to clone.
*/
public Circle_dt(Circle_dt circ)
{
this.c = circ.c;
this.r = circ.r;
}
/**
* Copy Constructor. <br />
* Creates a new Circle with same properties of <code>circ</code>.
* @param circ Circle to clone.
*/
public Circle_dt(Circle_dt circ)
{
this.c = circ.c;
this.r = circ.r;
}
internal Circle_dt circumcircle()
{
double u = ((a.x - b.x) * (a.x + b.x) + (a.y - b.y) * (a.y + b.y)) / 2.0f;
double v = ((b.x - c.x) * (b.x + c.x) + (b.y - c.y) * (b.y + c.y)) / 2.0f;
double den = (a.x - b.x) * (b.y - c.y) - (b.x - c.x) * (a.y - b.y);
if (den == 0) // oops, degenerate case
circum = new Circle_dt(a, Double.PositiveInfinity);
else
{
Point_dt cen = new Point_dt((u * (b.y - c.y) - v * (a.y - b.y)) / den,
(v * (a.x - b.x) - u * (b.x - c.x)) / den);
circum = new Circle_dt(cen, cen.distance2(a));
}
return circum;
}
