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#ifndef SPHERE_H
#define SPHERE_H
#include "Runtime/Serialize/SerializeUtility.h"
#include "Runtime/Math/Vector3.h"
#include <algorithm>
#include "Runtime/Modules/ExportModules.h"
class Sphere
{
Vector3f m_Center;
float m_Radius;
public:
DECLARE_SERIALIZE (Sphere)
Sphere () {}
Sphere (const Vector3f& p0, float r) {Set (p0, r);}
void Set (const Vector3f& p0) {m_Center = p0; m_Radius = 0;}
void Set (const Vector3f& p0, float r) {m_Center = p0; m_Radius = r;}
void Set (const Vector3f& p0, const Vector3f& p1);
void Set (const Vector3f* inVertices, UInt32 inHowmany);
Vector3f& GetCenter () {return m_Center;}
const Vector3f& GetCenter ()const {return m_Center;}
float& GetRadius () {return m_Radius;}
const float& GetRadius ()const {return m_Radius;}
bool IsInside (const Sphere& inSphere)const;
};
float EXPORT_COREMODULE CalculateSqrDistance (const Vector3f& p, const Sphere& s);
bool Intersect (const Sphere& inSphere0, const Sphere& inSphere1);
inline void Sphere::Set (const Vector3f& p0, const Vector3f& p1)
{
Vector3f dhalf = (p1 - p0) * 0.5;
m_Center = dhalf + p0;
m_Radius = Magnitude (dhalf);
}
inline bool Sphere::IsInside (const Sphere& inSphere)const
{
float sqrDist = SqrMagnitude (GetCenter () - inSphere.GetCenter ());
if (Sqr (GetRadius ()) > sqrDist + Sqr (inSphere.GetRadius ()))
return true;
else
return false;
}
inline bool Intersect (const Sphere& inSphere0, const Sphere& inSphere1)
{
float sqrDist = SqrMagnitude (inSphere0.GetCenter () - inSphere1.GetCenter ());
if (Sqr (inSphere0.GetRadius () + inSphere1.GetRadius ()) > sqrDist)
return true;
else
return false;
}
inline float CalculateSqrDistance (const Vector3f& p, const Sphere& s)
{
return std::max (0.0F, SqrMagnitude (p - s.GetCenter ()) - Sqr (s.GetRadius ()));
}
template<class TransferFunction> inline
void Sphere::Transfer (TransferFunction& transfer)
{
TRANSFER (m_Center);
TRANSFER (m_Radius);
}
#endif
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