CDRTransforms.h
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00001 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
00002 /* libcdr
00003  * Version: MPL 1.1 / GPLv2+ / LGPLv2+
00004  *
00005  * The contents of this file are subject to the Mozilla Public License Version
00006  * 1.1 (the "License"); you may not use this file except in compliance with
00007  * the License or as specified alternatively below. You may obtain a copy of
00008  * the License at http://www.mozilla.org/MPL/
00009  *
00010  * Software distributed under the License is distributed on an "AS IS" basis,
00011  * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
00012  * for the specific language governing rights and limitations under the
00013  * License.
00014  *
00015  * Major Contributor(s):
00016  * Copyright (C) 2012 Fridrich Strba <fridrich.strba@bluewin.ch>
00017  *
00018  * All Rights Reserved.
00019  *
00020  * For minor contributions see the git repository.
00021  *
00022  * Alternatively, the contents of this file may be used under the terms of
00023  * either the GNU General Public License Version 2 or later (the "GPLv2+"), or
00024  * the GNU Lesser General Public License Version 2 or later (the "LGPLv2+"),
00025  * in which case the provisions of the GPLv2+ or the LGPLv2+ are applicable
00026  * instead of those above.
00027  */
00028 
00029 #ifndef __CDRTRANSFORMS_H__
00030 #define __CDRTRANSFORMS_H__
00031 
00032 #include <vector>
00033 #include <math.h>
00034 
00035 namespace libcdr
00036 {
00037 class CDRPath;
00038 
00039 class CDRTransform
00040 {
00041 public:
00042   CDRTransform();
00043   CDRTransform(double v0, double v1, double x0, double v3, double v4, double y0);
00044   CDRTransform(const CDRTransform &trafo);
00045 
00046   void applyToPoint(double &x, double &y) const;
00047   void applyToArc(double &rx, double &ry, double &rotation, bool &sweep, double &endx, double &endy) const;
00048   double getScaleX() const;
00049   double getScaleY() const;
00050   double getTranslateX() const;
00051   double getTranslateY() const;
00052   bool getFlipX() const;
00053   bool getFlipY() const;
00054 
00055 private:
00056   double _getScaleX() const;
00057   double _getScaleY() const;
00058   double m_v0;
00059   double m_v1;
00060   double m_x0;
00061   double m_v3;
00062   double m_v4;
00063   double m_y0;
00064 };
00065 
00066 class CDRTransforms
00067 {
00068 public:
00069   CDRTransforms();
00070   CDRTransforms(const CDRTransforms &trafos);
00071   ~CDRTransforms();
00072 
00073   void append(double v0, double v1, double x0, double v3, double v4, double y0);
00074   void append(const CDRTransform &trafo);
00075   void clear();
00076   bool empty() const;
00077 
00078   void applyToPoint(double &x, double &y) const;
00079   void applyToArc(double &rx, double &ry, double &rotation, bool &sweep, double &x, double &y) const;
00080   double getScaleX() const;
00081   double getScaleY() const;
00082   double getTranslateX() const;
00083   double getTranslateY() const;
00084   bool getFlipX() const;
00085   bool getFlipY() const;
00086 
00087 private:
00088   double _getScaleX() const;
00089   double _getScaleY() const;
00090   std::vector<CDRTransform> m_trafos;
00091 };
00092 
00093 } // namespace libcdr
00094 
00095 #endif /* __CDRTRANSFORMS_H__ */
00096 /* vim:set shiftwidth=2 softtabstop=2 expandtab: */