angle.h

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/*
**  ClanLib SDK
**  Copyright (c) 1997-2009 The ClanLib Team
**
**  This software is provided 'as-is', without any express or implied
**  warranty.  In no event will the authors be held liable for any damages
**  arising from the use of this software.
**
**  Permission is granted to anyone to use this software for any purpose,
**  including commercial applications, and to alter it and redistribute it
**  freely, subject to the following restrictions:
**
**  1. The origin of this software must not be misrepresented; you must not
**     claim that you wrote the original software. If you use this software
**     in a product, an acknowledgment in the product documentation would be
**     appreciated but is not required.
**  2. Altered source versions must be plainly marked as such, and must not be
**     misrepresented as being the original software.
**  3. This notice may not be removed or altered from any source distribution.
**
**  Note: Some of the libraries ClanLib may link to may have additional
**  requirements or restrictions.
**
**  File Author(s):
**
**    Harry Storbacka
*/


#pragma once

#include "../api_core.h"
#include "../System/sharedptr.h"

class CL_Angle_Impl;

enum CL_AngleUnit
{
        cl_degrees,
        cl_radians
};

class CL_API_CORE CL_Angle
{
public:
        CL_Angle();

        CL_Angle(float value, CL_AngleUnit unit);

        static CL_Angle from_radians(float value);

        static CL_Angle from_degrees(float value);

public:
        float to_degrees() const;

        float to_radians() const;

public:
        void set_degrees(float degrees);

        void set_radians(float radians);

        void normalize();

        void normalize_180();

public:
        void operator += (const CL_Angle &angle);

        void operator -= (const CL_Angle &angle);

        void operator *= (const CL_Angle &angle);

        void operator /= (const CL_Angle &angle);

        CL_Angle operator + (const CL_Angle &angle) const;

        CL_Angle operator - (const CL_Angle &angle) const;

        CL_Angle operator * (const CL_Angle &angle) const;

        CL_Angle operator * (float value) const;

        CL_Angle operator / (const CL_Angle &angle) const;

        CL_Angle operator / (float value) const;

        bool operator < (const CL_Angle &angle) const;

        bool operator <= (const CL_Angle &angle) const;

        bool operator > (const CL_Angle &angle) const;

        bool operator >= (const CL_Angle &angle) const;

        bool operator== (const CL_Angle &angle) const;

        bool operator!= (const CL_Angle &angle) const;

private:
        float value_rad;

};

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