1 | /* === S Y N F I G ========================================================= */ |
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2 | /*! \file ducktransform_rotate.h |
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3 | ** \brief Template Header |
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4 | ** |
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5 | ** $Id$ |
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6 | ** |
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7 | ** \legal |
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8 | ** Copyright (c) 2002-2005 Robert B. Quattlebaum Jr., Adrian Bentley |
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9 | ** |
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10 | ** This package is free software; you can redistribute it and/or |
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11 | ** modify it under the terms of the GNU General Public License as |
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12 | ** published by the Free Software Foundation; either version 2 of |
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13 | ** the License, or (at your option) any later version. |
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14 | ** |
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15 | ** This package is distributed in the hope that it will be useful, |
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16 | ** but WITHOUT ANY WARRANTY; without even the implied warranty of |
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17 | ** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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18 | ** General Public License for more details. |
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19 | ** \endlegal |
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20 | */ |
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21 | /* ========================================================================= */ |
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22 | |
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23 | /* === S T A R T =========================================================== */ |
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24 | |
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25 | #ifndef __SYNFIG_STUDIO_DUCK_TRANSFORM_ROTATE_H |
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26 | #define __SYNFIG_STUDIO_DUCK_TRANSFORM_ROTATE_H |
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27 | |
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28 | /* === H E A D E R S ======================================================= */ |
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29 | |
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30 | #include "duckmatic.h" |
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31 | #include <synfig/angle.h> |
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32 | |
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33 | /* === M A C R O S ========================================================= */ |
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34 | |
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35 | /* === T Y P E D E F S ===================================================== */ |
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36 | |
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37 | /* === C L A S S E S & S T R U C T S ======================================= */ |
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38 | |
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39 | namespace studio { |
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40 | |
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41 | class Transform_Rotate : public synfig::Transform |
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42 | { |
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43 | private: |
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44 | //synfig::Angle angle; |
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45 | synfig::Vector origin; |
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46 | synfig::Real sin_val; |
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47 | synfig::Real cos_val; |
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48 | |
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49 | public: |
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50 | Transform_Rotate(const synfig::GUID& guid, const synfig::Angle& angle,const synfig::Vector& origin=synfig::Vector(0,0)): |
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51 | Transform(guid), |
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52 | //angle(angle), |
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53 | origin(origin), |
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54 | sin_val(synfig::Angle::sin(angle).get()), |
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55 | cos_val(synfig::Angle::cos(angle).get()) |
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56 | { |
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57 | } |
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58 | |
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59 | synfig::Vector perform(const synfig::Vector& x)const |
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60 | { |
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61 | synfig::Point pos(x-origin); |
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62 | return synfig::Point(cos_val*pos[0]-sin_val*pos[1],sin_val*pos[0]+cos_val*pos[1])+origin; |
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63 | } |
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64 | synfig::Vector unperform(const synfig::Vector& x)const |
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65 | { |
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66 | synfig::Point pos(x-origin); |
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67 | return synfig::Point(cos_val*pos[0]+sin_val*pos[1],-sin_val*pos[0]+cos_val*pos[1])+origin; |
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68 | } |
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69 | |
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70 | synfig::String get_string()const |
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71 | { |
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72 | return "duck rotate"; |
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73 | } |
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74 | }; |
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75 | |
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76 | }; |
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77 | |
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78 | /* === E N D =============================================================== */ |
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79 | |
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80 | #endif |
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