Added normal cone type to OpenMesh

git-svn-id: http://www.openmesh.org/svnrepo/OpenMesh/trunk@458 fdac6126-5c0c-442c-9429-916003d36597

src/OpenMesh/Core/Geometry/NormalConeT.hh

@@ -0,0 +1,124 @@
+/*===========================================================================*\
+ *                                                                           *
+ *                               OpenMesh                                    *
+ *      Copyright (C) 2001-2011 by Computer Graphics Group, RWTH Aachen      *
+ *                           www.openmesh.org                                *
+ *                                                                           *
+ *---------------------------------------------------------------------------*
+ *  This file is part of OpenMesh.                                           *
+ *                                                                           *
+ *  OpenMesh is free software: you can redistribute it and/or modify         *
+ *  it under the terms of the GNU Lesser General Public License as           *
+ *  published by the Free Software Foundation, either version 3 of           *
+ *  the License, or (at your option) any later version with the              *
+ *  following exceptions:                                                    *
+ *                                                                           *
+ *  If other files instantiate templates or use macros                       *
+ *  or inline functions from this file, or you compile this file and         *
+ *  link it with other files to produce an executable, this file does        *
+ *  not by itself cause the resulting executable to be covered by the        *
+ *  GNU Lesser General Public License. This exception does not however       *
+ *  invalidate any other reasons why the executable file might be            *
+ *  covered by the GNU Lesser General Public License.                        *
+ *                                                                           *
+ *  OpenMesh is distributed in the hope that it will be useful,              *
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of           *
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the            *
+ *  GNU Lesser General Public License for more details.                      *
+ *                                                                           *
+ *  You should have received a copy of the GNU LesserGeneral Public          *
+ *  License along with OpenMesh.  If not,                                    *
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+ *                                                                           *
+\*===========================================================================*/
+
+/*===========================================================================*\
+ *                                                                           *
+ *   $Revision$                                                         *
+ *   $Date$                   *
+ *                                                                           *
+\*===========================================================================*/
+
+
+
+
+//=============================================================================
+//
+//  CLASS NormalCone
+//
+//=============================================================================
+
+
+#ifndef OPENMESH_NORMALCONE_HH
+#define OPENMESH_NORMALCONE_HH
+
+
+//== INCLUDES =================================================================
+
+
+#include <OpenMesh/Core/Geometry/VectorT.hh>
+
+
+//== NAMESPACES ===============================================================
+
+
+namespace OpenMesh {
+
+
+//== CLASS DEFINITION =========================================================
+
+
+/** /class NormalCone NormalCone.hh <ACG/Geometry/Types/NormalCone.hh>
+
+    NormalCone that can be merged with other normal cones. Provides
+    the center normal and the opening angle.
+**/
+
+template <typename Scalar>
+class NormalConeT
+{
+public:
+
+  // typedefs
+  typedef VectorT<Scalar, 3>  Vec3;
+
+
+  //! default constructor (not initialized)
+  NormalConeT() {}
+
+  //! Initialize cone with center (unit vector) and angle (radius in radians)
+  NormalConeT(const Vec3& _center_normal, Scalar _angle=0.0);
+
+  //! return max. distance (radians) unit vector to cone (distant side)
+  Scalar max_angle(const Vec3&) const;
+
+  //! return max. distance (radians) cone to cone (distant sides)
+  Scalar max_angle(const NormalConeT&) const;
+
+  //! merge _cone; this instance will then enclose both former cones
+  void merge(const NormalConeT&);
+
+  //! returns center normal
+  const Vec3& center_normal() const { return center_normal_; }
+
+  //! returns size of cone (radius in radians)
+  Scalar angle() const { return angle_; }
+
+private:
+
+  Vec3    center_normal_;
+  Scalar  angle_;
+};
+
+
+//=============================================================================
+} // namespace OpenMesh
+//=============================================================================
+#if defined(INCLUDE_TEMPLATES) && !defined(OPENMESH_NORMALCONE_C)
+#define OPENMESH_NORMALCONE_TEMPLATES
+#include "NormalConeT.cc"
+#endif
+//=============================================================================
+#endif // OPENMESH_NORMALCONE_HH defined
+//=============================================================================
+