public static bool CreateInscribed(Vector3 v0, Vector3 v1, Vector3 v2, out Circle3 circle)
{
Vector3 value = v1 - v0;
Vector3 vector = v2 - v1;
Vector3 value2 = v0 - v2;
circle.Normal = vector.Cross(value);
Vector3 vector2 = circle.Normal.UnitCross(value);
Vector3 vector3 = circle.Normal.UnitCross(vector);
Vector3 vector4 = circle.Normal.UnitCross(value2);
float num = vector3.Dot(value);
if (Mathf.Abs(num) < 1E-05f)
{
circle = default(Circle3);
return(false);
}
float num2 = vector4.Dot(vector);
if (Mathf.Abs(num2) < 1E-05f)
{
circle = default(Circle3);
return(false);
}
float num3 = vector2.Dot(value2);
if (Mathf.Abs(num3) < 1E-05f)
{
circle = default(Circle3);
return(false);
}
float num4 = 1f / num;
float num5 = 1f / num2;
float num6 = 1f / num3;
circle.Radius = 1f / (num4 + num5 + num6);
circle.Center = circle.Radius * (num4 * v0 + num5 * v1 + num6 * v2);
circle.Normal.Normalize();
circle.Axis0 = vector2;
circle.Axis1 = circle.Normal.Cross(circle.Axis0);
return(true);
}
public static bool CreateCircumscribed(Vector3 v0, Vector3 v1, Vector3 v2, out Circle3 circle)
{
Vector3 vector = v0 - v2;
Vector3 vector2 = v1 - v2;
float num = vector.Dot(vector);
float num2 = vector.Dot(vector2);
float num3 = vector2.Dot(vector2);
float num4 = num * num3 - num2 * num2;
if (Mathf.Abs(num4) < 1E-05f)
{
circle = default(Circle3);
return(false);
}
float num5 = 0.5f / num4;
float d = num5 * num3 * (num - num2);
float d2 = num5 * num * (num3 - num2);
Vector3 b = d * vector + d2 * vector2;
circle.Center = v2 + b;
circle.Radius = b.magnitude;
circle.Normal = vector.UnitCross(vector2);
if (Mathf.Abs(circle.Normal.x) >= Mathf.Abs(circle.Normal.y) && Mathf.Abs(circle.Normal.x) >= Mathf.Abs(circle.Normal.z))
{
circle.Axis0.x = -circle.Normal.y;
circle.Axis0.y = circle.Normal.x;
circle.Axis0.z = 0f;
}
else
{
circle.Axis0.x = 0f;
circle.Axis0.y = circle.Normal.z;
circle.Axis0.z = -circle.Normal.y;
}
circle.Axis0.Normalize();
circle.Axis1 = circle.Normal.Cross(circle.Axis0);
return(true);
}
