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75 lines
3.6 KiB
C++
75 lines
3.6 KiB
C++
/*****************************************************************************************
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* *
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* OpenSpace *
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* *
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* Copyright (c) 2014-2025 *
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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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#include <ghoul/misc/assert.h>
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#include <ghoul/glm.h>
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namespace openspace::interaction {
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template <typename T, typename ScaleType>
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DelayedVariable<T, ScaleType>::DelayedVariable(ScaleType scaleFactor, ScaleType friction)
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: _scaleFactor(std::move(scaleFactor))
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, _friction(friction)
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{
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ghoul_assert(_friction >= ScaleType(0.0), "Friction must be positive");
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}
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template <typename T, typename ScaleType>
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void DelayedVariable<T, ScaleType>::set(T value, double dt) {
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_targetValue = value;
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_currentValue = _currentValue + (_targetValue - _currentValue) *
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glm::min(_scaleFactor * dt, 1.0); // less or equal to 1.0 keeps it stable
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}
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template <typename T, typename ScaleType>
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void DelayedVariable<T, ScaleType>::decelerate(double dt) {
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_currentValue = _currentValue + (- _currentValue) *
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glm::min(_scaleFactor * _friction * dt, 1.0);
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// less or equal to 1.0 keeps it stable
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}
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template <typename T, typename ScaleType>
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void DelayedVariable<T, ScaleType>::setHard(T value) {
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_targetValue = value;
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_currentValue = value;
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}
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template <typename T, typename ScaleType>
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void DelayedVariable<T, ScaleType>::setFriction(ScaleType friction) {
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_friction = friction;
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ghoul_assert(_friction >= ScaleType(0.0), "Friction must be positive");
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}
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template <typename T, typename ScaleType>
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void DelayedVariable<T, ScaleType>::setScaleFactor(ScaleType scaleFactor) {
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_scaleFactor = scaleFactor;
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}
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template <typename T, typename ScaleType>
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T DelayedVariable<T, ScaleType>::get() const {
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return _currentValue;
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}
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} // namespace openspace::interaction
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