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58 lines
3.0 KiB
C++
58 lines
3.0 KiB
C++
/*****************************************************************************************
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* *
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* OpenSpace *
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* *
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* Copyright (c) 2014-2019 *
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* *
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* Permission is hereby granted, free of charge, to any person obtaining a copy of this *
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* software and associated documentation files (the "Software"), to deal in the Software *
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* without restriction, including without limitation the rights to use, copy, modify, *
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* merge, publish, distribute, sublicense, and/or sell copies of the Software, and to *
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* permit persons to whom the Software is furnished to do so, subject to the following *
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* conditions: *
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* *
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* The above copyright notice and this permission notice shall be included in all copies *
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* or substantial portions of the Software. *
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* *
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, *
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* INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A *
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* PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT *
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* HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF *
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* CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE *
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* OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. *
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****************************************************************************************/
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#ifndef __OPENSPACE_MODULE_AUTONAVIGATION___SPEEDFUNCTION___H__
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#define __OPENSPACE_MODULE_AUTONAVIGATION___SPEEDFUNCTION___H__
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namespace openspace::autonavigation {
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// The speed function describing the shape of the speed curve. Values in [0,1].
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class SpeedFunction {
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public:
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SpeedFunction() = default;
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virtual ~SpeedFunction();
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double scaledValue(double time, double duration, double pathLength) const;
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virtual double value(double t) const = 0;
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protected:
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// must be called by each subclass after initialization
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void initIntegratedSum();
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// store the sum of the function over the duration of the segment,
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// so we don't need to recompue it every time we access the speed
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double _integratedSum = 0.0;
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};
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class CubicDampenedSpeed : public SpeedFunction {
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public:
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CubicDampenedSpeed();
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double value(double t) const override;
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};
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} // namespace openspace::autonavigation
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#endif // __OPENSPACE_MODULE_AUTONAVIGATION___SPEEDFUNCTION___H__
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