Initial commit

Torque/SDK/engine/game/sphere.h

@@ -0,0 +1,65 @@
+//-----------------------------------------------------------------------------
+// Torque Game Engine
+// Copyright (C) GarageGames.com, Inc.
+//-----------------------------------------------------------------------------
+
+#ifndef _SPHERE_H_
+#define _SPHERE_H_
+
+#ifndef _MMATH_H_
+#include "math/mMath.h"
+#endif
+#ifndef _TVECTOR_H_
+#include "core/tVector.h"
+#endif
+
+//------------------------------------------------------------------------------
+// Class: Sphere
+//------------------------------------------------------------------------------
+// * ctor takes type of base polyhedron that is subdivided to create sphere
+// * getMesh(...) will subdivide the current mesh to the desired level where
+//   (each level has 4 times the polys of the previous level)
+
+class Sphere
+{
+   public:
+
+      // regular polyhedra with triangle face polygons (num of faces)
+      enum {
+         Tetrahedron = 4,
+         Octahedron = 8,
+         Icosahedron = 20,
+
+         MaxLevel       = 5
+      };
+
+      struct Triangle {
+         Triangle() {}
+         Triangle(Point3F a, Point3F b, Point3F c) {pnt[0] = a; pnt[1] = b; pnt[2] = c;}
+         Point3F     pnt[3];
+         Point3F     normal;
+      };
+
+      struct TriangleMesh {
+         U32            numPoly;
+         Triangle *     poly;
+      };
+
+      Sphere(U32 baseType = Octahedron);
+      ~Sphere();
+
+      const TriangleMesh * getMesh(U32 level = 0);
+
+   private:
+
+      TriangleMesh * createTetrahedron();
+      TriangleMesh * createOctahedron();
+      TriangleMesh * createIcosahedron();
+
+      Vector<TriangleMesh*>      mDetails;
+
+      void calcNormals(TriangleMesh *);
+      TriangleMesh * subdivideMesh(TriangleMesh*);
+};
+
+#endif