public void GetECircleFromHCircle()
{
if (HX == 0f && HY == 0f)
{
EX = 0f;
EY = 0f;
ER = HTransform.H2EFromOrigin(HR);
return;
}
float r = Mathf.Sqrt(HX * HX + HY * HY);
float nx = HX / r;
float ny = HY / r;
float d = HTransform.E2HFromOrigin(r);
float r1 = HTransform.H2EFromOrigin(d + HR);
float r2 = HTransform.H2EFromOrigin(d - HR);
EX = 0.5f * (r1 + r2) * nx;
EY = 0.5f * (r1 + r2) * ny;
ER = 0.5f * (r1 - r2);
}
public void GetHCircleFromECircle()
{
if (EX == 0f && EY == 0f)
{
HX = 0f;
HY = 0f;
HR = Mathf.Log((1 + ER) / (1 - ER), 2.718281828459f);
return;
}
float r = Mathf.Sqrt(EX * EX + EY * EY);
float nx = EX / r;
float ny = EY / r;
float d1 = HTransform.E2HFromOrigin(r + ER);
float d2 = HTransform.E2HFromOrigin(r - ER);
float d = HTransform.H2EFromOrigin(0.5f * (d1 + d2));
HX = d * nx;
HY = d * ny;
HR = 0.5f * (d1 - d2);
}
