1 files changed, 79 insertions, 0 deletions
diff --git a/Runtime/Geometry/Sphere.h b/Runtime/Geometry/Sphere.h
new file mode 100644
index 0000000..e19e2f5
--- /dev/null
+++ b/Runtime/Geometry/Sphere.h
@@ -0,0 +1,79 @@
+#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