#ifndef GRAVITYDATA_H
#define GRAVITYDATA_H

#include <cmath>
#include <sstream>


/** data received from an accelerometer sensor */
struct GravityData {

	float x;
	float y;
	float z;

    GravityData() : x(0), y(0), z(0) {;}

    GravityData(const float x, const float y, const float z) : x(x), y(y), z(z) {;}

	float magnitude() const {
		return std::sqrt( x*x + y*y + z*z );
	}

    GravityData& operator += (const GravityData& o) {
		this->x += o.x;
		this->y += o.y;
		this->z += o.z;
		return *this;
	}

    GravityData& operator -= (const GravityData& o) {
		this->x -= o.x;
		this->y -= o.y;
		this->z -= o.z;
		return *this;
	}

    GravityData operator - (const GravityData& o) const {
        return GravityData(x-o.x, y-o.y, z-o.z);
	}

    GravityData operator / (const float val) const {
        return GravityData(x/val, y/val, z/val);
	}

        std::string asString() const {
            std::stringstream ss;
            ss << "(" << x << "," << y << "," << z << ")";
            return ss.str();
        }

};

#endif // GRAVITYDATA_H