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37 lines
1 KiB
C++
37 lines
1 KiB
C++
//
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// AtRestDetector.h
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// libraries/shared/src
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//
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// Created by Anthony Thibault on 10/6/2015
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// Copyright 2015 High Fidelity, Inc.
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//
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// Distributed under the Apache License, Version 2.0.
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// See the accompanying file LICENSE or http://www.apache.org/licenses/LICENSE-2.0.html
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//
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#ifndef hifi_AtRestDetector_h
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#define hifi_AtRestDetector_h
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#include <glm/glm.hpp>
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#include <glm/gtx/quaternion.hpp>
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class AtRestDetector {
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public:
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AtRestDetector(const glm::vec3& startPosition, const glm::quat& startRotation);
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void reset(const glm::vec3& startPosition, const glm::quat& startRotation);
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// returns true if object is at rest, dt in assumed to be seconds.
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bool update(const glm::vec3& position, const glm::quat& startRotation);
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bool isAtRest() const { return _isAtRest; }
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protected:
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glm::vec3 _positionAverage;
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glm::vec3 _quatLogAverage;
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uint64_t _lastUpdateTime { 0 };
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float _positionVariance { 0.0f };
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float _quatLogVariance { 0.0f };
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bool _isAtRest { false };
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};
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#endif
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