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| * |
| * Licensed to the Apache Software Foundation (ASF) under one |
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| * to you under the Apache License, Version 2.0 (the |
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| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
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| * KIND, either express or implied. See the License for the |
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| *************************************************************/ |
| |
| |
| |
| #ifndef SD_SLIDESORTER_CONTROLLER_ANIMATION_FUNCTION_HXX |
| #define SD_SLIDESORTER_CONTROLLER_ANIMATION_FUNCTION_HXX |
| |
| #include "model/SlsSharedPageDescriptor.hxx" |
| #include <basegfx/point/b2dpoint.hxx> |
| #include <boost/noncopyable.hpp> |
| #include <boost/function.hpp> |
| #include <tools/gen.hxx> |
| #include <vector> |
| |
| namespace sd { namespace slidesorter { namespace view { |
| class SlideSorterView; |
| } } } |
| |
| |
| |
| namespace sd { namespace slidesorter { namespace controller { |
| |
| /** A collection of functions that are useful when creating animations. |
| They are collected here until a better place is found. |
| */ |
| class AnimationFunction |
| : private ::boost::noncopyable |
| { |
| public: |
| /** Acceleration function that maps [0,1] to [0,1] linearly, ie it |
| returns the given time value unaltered. |
| */ |
| static double Linear (const double nTime); |
| |
| /** Acceleration function that maps [0,1] to [0,1]. Speed starts fast |
| and ends slow following the sine function. |
| */ |
| static double FastInSlowOut_Sine (const double nTime); |
| |
| /** Acceleration function that maps [0,1] to [0,1]. Speed starts fast |
| and ends slow following the square root function. |
| */ |
| static double FastInSlowOut_Root (const double nTime); |
| |
| /** Acceleration function that maps [0,1] to [0,0]. Speed starts slow, |
| rises, drops and ends slow following the sine function. |
| */ |
| static double SlowInSlowOut_0to0_Sine (const double nTime); |
| |
| /** Acceleration function that maps [0,1] to [0,0]. Speed starts slow, |
| rises and drops several times and ends slow following multiple |
| cycles of the the sine function. |
| */ |
| static double Vibrate_Sine (const double nTime); |
| |
| /** Scale point linearly. |
| */ |
| static Point ScalePoint (const Point& rPoint, const double nTime); |
| |
| /** Blend two points together according to the given weight. |
| */ |
| static double Blend (const double nStartValue, const double nEndValue, const double nWeight); |
| |
| /** Apply a gradual visual state change. The kind of change, i.e. the |
| previous and the new states are expected to be already set. This |
| method only adjusts the blending of the visual representation from |
| one state to the other. |
| */ |
| static void ApplyVisualStateChange ( |
| const model::SharedPageDescriptor& rpDescriptor, |
| view::SlideSorterView& rView, |
| const double nTime); |
| |
| /** Apply a gradual change of a previously set offset to the location of |
| a page object. |
| */ |
| static void ApplyLocationOffsetChange ( |
| const model::SharedPageDescriptor& rpDescriptor, |
| view::SlideSorterView& rView, |
| const Point aLocationOffset); |
| |
| /** Apply a gradual change the alpha value from the old value to a |
| new value (set prior to this call.) |
| */ |
| static void ApplyButtonAlphaChange( |
| const model::SharedPageDescriptor& rpDescriptor, |
| view::SlideSorterView& rView, |
| const double nButtonAlpha, |
| const double nButtonBarAlpha); |
| }; |
| |
| |
| |
| |
| class AnimationBezierFunction |
| { |
| public: |
| /** Create a cubic bezier curve whose start and end points are given |
| implicitly as P0=(0,0) and P3=(1,1). |
| */ |
| AnimationBezierFunction ( |
| const double nX1, |
| const double nY1, |
| const double nX2, |
| const double nY2); |
| |
| /** Create a cubic bezier curve whose start and end points are given |
| implicitly as P0=(0,0) and P3=(1,1). The second control point is |
| implicitly given as P2=(1-nY1,1-nX1). |
| */ |
| AnimationBezierFunction ( |
| const double nX1, |
| const double nY1); |
| |
| ::basegfx::B2DPoint operator() (const double nT); |
| |
| private: |
| const double mnX1; |
| const double mnY1; |
| const double mnX2; |
| const double mnY2; |
| |
| double EvaluateComponent ( |
| const double nT, |
| const double nV1, |
| const double nV2); |
| }; |
| |
| |
| |
| |
| /** Turn a parametric function into one whose y-Values depend on its |
| x-Values. Note a lot of interpolation takes place. The resulting |
| accuracy should be good enough for the purpose of acceleration |
| function for animations. |
| */ |
| class AnimationParametricFunction |
| { |
| public: |
| typedef ::boost::function<basegfx::B2DPoint(double)> ParametricFunction; |
| AnimationParametricFunction (const ParametricFunction& rFunction); |
| |
| double operator() (const double nX); |
| |
| private: |
| /** y-Values of the parametric function given to the constructor |
| evaluated (and interpolated) for evenly spaced x-Values. |
| */ |
| ::std::vector<double> maY; |
| }; |
| |
| |
| |
| |
| } } } // end of namespace ::sd::slidesorter::controller |
| |
| #endif |