Differential D6807 Diff 22906 extern/tspline/source/tjunction.h

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extern/tspline/source/tjunction.h

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				/*
				T-SPLINE -- A T-spline object oriented library in C++
				Copyright (C) 2015- Wenlei Xiao

				This library 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 2.1 of the
				License, or (at your option) any later version.

				This library 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 Lesser General Public
				License along with this library; if not, write to the Free Software
				Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA


				Report problems and direct all questions to:

				Wenlei Xiao, Ph.D
				School of Mechanical Engineering and Automation
				Beijing University of Aeronautics and Astronautics
				D-315, New Main Building,
				Beijing, P.R. China, 100191

				email: xiaowenlei@buaa.edu.cn
				-------------------------------------------------------------------------------
				Revision_history:

				2015/04/08: Wenlei Xiao
				- Created.
				2016/04/02: Wenlei Xiao
				- Doxygen comments added.
				-------------------------------------------------------------------------------
				*/


				/** @file [tjunction]
				* @brief This file contains a TJunction class to deal with T shaped T-vertices.
				* @author <Wenlei Xiao>
				* @date <2015.04.08>
				* @version <v1.0>
				* @note
				* TJunction class can help to check and remend T-junctions.
				*/

				#ifndef TJUNCTION_H
				#define TJUNCTION_H

				#include <basis.h>
				#include <tspline.h>
				#include <virtual.h>

				#ifdef use_namespace
				namespace TSPLINE {
				using namespace NEWMAT;
				#endif

				DECLARE_SMARTPTR(TJunction);

				/**
				* @class <TJunction>
				* @brief T-junction class.
				* @note
				* TJunction requires a T-vertex to be set, it will then derive the shape of the T-junction and patch necessary virtual T-objects.
				*/
				class TJunction
				{
				public:
				TJunction(const TVertexPtr &vertex);
				~TJunction();

				public:
				/** Fill a T-vertex. */
				void fill(const TVertexPtr &vertex);
				/** Check if the T-junction is valid. */
				bool valid();
				/** Patch the virtual T-objects. */
				void patchVirtuals();

				protected:
				void fill(const TLinkPtr &north, const TLinkPtr &west,
				const TLinkPtr &south, const TLinkPtr &east);
				void cleanUp();

				void patchNorthVirtuals();
				void patchWestVirtuals();
				void patchSouthVirtuals();
				void patchEastVirtuals();

				Parameter intersectNorth(const TFacePtr &face, Real s);
				Parameter intersectWest(const TFacePtr &face, Real t);
				Parameter intersectSouth(const TFacePtr &face, Real s);
				Parameter intersectEast(const TFacePtr &face, Real t);

				VirtualTLinkPtr createVirtualLink(const TVertexPtr &vertex, Parameter p, const TFacePtr &face);
				VirtualTNodeV4Ptr createVirtualNodeV4(const TVertexPtr &vertex);
				void patchNorthVirtual(const TVertexPtr &vertex, Parameter p, const TFacePtr &face);
				void patchWestVirtual(const TVertexPtr &vertex, Parameter p, const TFacePtr &face);
				void patchSouthVirtual(const TVertexPtr &vertex, Parameter p, const TFacePtr &face);
				void patchEastVirtual(const TVertexPtr &vertex, Parameter p, const TFacePtr &face);

				protected:
				void splitTFaceWestEast(const TFacePtr face, Real s,
				VirtualTFacePtr &west, VirtualTFacePtr &east);
				void splitTFaceNorthSouth(const TFacePtr face, Real t,
				VirtualTFacePtr &north, VirtualTFacePtr &south);
				private:
				TVertexPtr _vertex;
				TLinkPtr _middle;
				TLinkPtr _left;
				TLinkPtr _right;
				int _orientation;
				};

				#ifdef use_namespace
				}
				#endif

				#endif
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