RotationAccumulator.h

//
//  RotationAccumulator.h
//
//  Copyright 2015 High Fidelity, Inc.
//
//  Distributed under the Apache License, Version 2.0.
//  See the accompanying file LICENSE or http://www.apache.org/licenses/LICENSE-2.0.html
//
 
#ifndef hifi_RotationAccumulator_h
#define hifi_RotationAccumulator_h
 
#include <glm/gtc/quaternion.hpp>
 
class RotationAccumulator {
public:
    RotationAccumulator() : _rotationSum(0.0f, 0.0f, 0.0f, 0.0f), _numRotations(0), _isDirty(false) { }
 
    int size() const { return _numRotations; }
 
    void add(const glm::quat& rotation, float weight = 1.0f);
 
    glm::quat getAverage();
 
    bool isDirty() const { return _isDirty; }
 
    void clear();
 
    void clearAndClean();
 
private:
    glm::quat _rotationSum;
    int _numRotations;
    bool _isDirty;
};
 
#endif // hifi_RotationAccumulator_h