Initial commit

Torque/SDK/engine/math/mSphere.h

@@ -0,0 +1,70 @@
+//-----------------------------------------------------------------------------
+// Torque Game Engine
+// Copyright (C) GarageGames.com, Inc.
+//-----------------------------------------------------------------------------
+
+#ifndef _MSPHERE_H_
+#define _MSPHERE_H_
+
+//Includes
+#ifndef _MPOINT_H_
+#include "math/mPoint.h"
+#endif
+
+class SphereF
+{
+  public:
+   Point3F center;
+   F32     radius;
+
+  public:
+   SphereF() { }
+   SphereF(const Point3F& in_rPosition,
+           const F32    in_rRadius)
+    : center(in_rPosition),
+      radius(in_rRadius)
+   {
+      if (radius < 0.0f)
+         radius = 0.0f;
+   }
+
+   bool isContained(const Point3F& in_rContain) const;
+   bool isContained(const SphereF& in_rContain) const;
+   bool isIntersecting(const SphereF& in_rIntersect) const;
+};
+
+//-------------------------------------- INLINES
+//
+inline bool
+SphereF::isContained(const Point3F& in_rContain) const
+{
+   F32 distSq = (center - in_rContain).lenSquared();
+
+   return (distSq <= (radius * radius));
+}
+
+inline bool
+SphereF::isContained(const SphereF& in_rContain) const
+{
+   if (radius < in_rContain.radius)
+      return false;
+
+   // Since our radius is guaranteed to be >= other's, we
+   //  can dodge the sqrt() here.
+   //
+   F32 dist = (in_rContain.center - center).lenSquared();
+
+   return (dist <= ((radius - in_rContain.radius) *
+                    (radius - in_rContain.radius)));
+}
+
+inline bool
+SphereF::isIntersecting(const SphereF& in_rIntersect) const
+{
+   F32 distSq = (in_rIntersect.center - center).lenSquared();
+
+   return (distSq <= ((in_rIntersect.radius + radius) *
+                      (in_rIntersect.radius + radius)));
+}
+
+#endif //_SPHERE_H_