FDO API Reference | Feature Data Objects |
00001 #ifndef _IARCSEGMENTABSTRACT_H_ 00002 #define _IARCSEGMENTABSTRACT_H_ 00003 00004 // 00005 // Copyright (C) 2004-2006 Autodesk, Inc. 00006 // 00007 // This library is free software; you can redistribute it and/or 00008 // modify it under the terms of version 2.1 of the GNU Lesser 00009 // General Public License as published by the Free Software Foundation. 00010 // 00011 // This library is distributed in the hope that it will be useful, 00012 // but WITHOUT ANY WARRANTY; without even the implied warranty of 00013 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 00014 // Lesser General Public License for more details. 00015 // 00016 // You should have received a copy of the GNU Lesser General Public 00017 // License along with this library; if not, write to the Free Software 00018 // Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA 00019 // 00020 00021 00022 00023 #ifdef _WIN32 00024 #pragma once 00025 #endif 00026 00027 #include <Geometry/ICurveSegmentAbstract.h> 00028 #include <Geometry/IDirectPosition.h> 00029 00030 /// \brief 00031 /// The FdoIArcSegmentAbstract class is an arc curve segment (abstract) 00032 class FdoIArcSegmentAbstract : public FdoICurveSegmentAbstract 00033 { 00034 public: 00035 00036 /// \brief 00037 /// Gets some position along the curve, between the starting and ending positions. 00038 /// 00039 /// \remarks 00040 /// Depending on the derived type and its implementation, this may be a 00041 /// computed value, or a persisted value used as part 00042 /// of the definition of the curve segment. This position is the only 00043 /// means to deduce the curve segment's orientation in some cases, such as 00044 /// when it is closed or vertically aligned ('on edge' when looking along the Z axis). 00045 /// 00046 /// \return 00047 /// Returns a midpoint on the curve 00048 /// 00049 FDO_GEOM_API virtual FdoIDirectPosition* GetMidPoint() const = 0; 00050 00051 protected: 00052 00053 /// \brief 00054 /// Default destructor. 00055 /// 00056 /// \return 00057 /// Returns nothing 00058 /// 00059 FDO_GEOM_API virtual ~FdoIArcSegmentAbstract() {}; 00060 00061 }; 00062 #endif 00063 00064
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