/*==LICENSE==*

CyanWorlds.com Engine - MMOG client, server and tools
Copyright (C) 2011 Cyan Worlds, Inc.

This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.

Additional permissions under GNU GPL version 3 section 7

If you modify this Program, or any covered work, by linking or
combining it with any of RAD Game Tools Bink SDK, Autodesk 3ds Max SDK,
NVIDIA PhysX SDK, Microsoft DirectX SDK, OpenSSL library, Independent
JPEG Group JPEG library, Microsoft Windows Media SDK, or Apple QuickTime SDK
(or a modified version of those libraries),
containing parts covered by the terms of the Bink SDK EULA, 3ds Max EULA,
PhysX SDK EULA, DirectX SDK EULA, OpenSSL and SSLeay licenses, IJG
JPEG Library README, Windows Media SDK EULA, or QuickTime SDK EULA, the
licensors of this Program grant you additional
permission to convey the resulting work. Corresponding Source for a
non-source form of such a combination shall include the source code for
the parts of OpenSSL and IJG JPEG Library used as well as that of the covered
work.

You can contact Cyan Worlds, Inc. by email legal@cyan.com
 or by snail mail at:
      Cyan Worlds, Inc.
      14617 N Newport Hwy
      Mead, WA   99021

*==LICENSE==*/

#ifndef hsColorRGBA_inc
#define hsColorRGBA_inc

#include "hsScalar.h"
#include "hsStream.h"

struct hsColorRGBA {
	hsScalar		r,g,b,a;
	
	hsRGBAColor32 ToRGBA32() const;

	hsColorRGBA& Set(hsScalar red, hsScalar grn, hsScalar blu, hsScalar alp) { r = red; g = grn; b = blu; a = alp; return *this; }

	hsBool operator==(const hsColorRGBA&c) const { return (r==c.r)&&(g==c.g)&&(b==c.b)&&(a==c.a); }
	hsBool operator!=(const hsColorRGBA&c) const { return !(c == *this); }

	friend inline hsColorRGBA operator+(const hsColorRGBA& s, const hsColorRGBA& t);
	hsColorRGBA& operator+=(const hsColorRGBA& s);
	
	friend inline hsColorRGBA operator*(const hsColorRGBA& s, const hsColorRGBA& t);
	hsColorRGBA& operator*=(const hsColorRGBA& s);
	
	friend inline hsColorRGBA operator-(const hsColorRGBA& s, const hsColorRGBA& t);
	hsColorRGBA& operator-=(const hsColorRGBA& s);
	
	friend inline hsColorRGBA operator*(const hsColorRGBA& c, const hsScalar s);
	friend inline hsColorRGBA operator*(const hsScalar s, const hsColorRGBA& c);
	hsColorRGBA& operator*=(const hsScalar s);

	hsColorRGBA&	FromARGB32(UInt32 c);
	UInt32			ToARGB32() const;
	UInt32			ToARGB32Premultiplied() const;

	void Read(hsStream *stream);
	void Write(hsStream *stream) const;
};

inline void hsColorRGBA::Read(hsStream *s)
{
	r = s->ReadSwapScalar();
	g = s->ReadSwapScalar();
	b = s->ReadSwapScalar();
	a = s->ReadSwapScalar();
}
inline void hsColorRGBA::Write(hsStream *s) const
{
	s->WriteSwapScalar(r);
	s->WriteSwapScalar(g);
	s->WriteSwapScalar(b);
	s->WriteSwapScalar(a);
}

inline hsColorRGBA& hsColorRGBA::FromARGB32(UInt32 c)
{
	const hsScalar oo255 = 1.f / 255.f;
	a = hsScalar((c >> 24) & 0xff) * oo255;
	r = hsScalar((c >> 16) & 0xff) * oo255;
	g = hsScalar((c >> 8) & 0xff) * oo255;
	b = hsScalar((c >> 0) & 0xff) * oo255;
	return *this;
}

inline UInt32 hsColorRGBA::ToARGB32() const
{
	return (UInt32(a * 255.99f) << 24)
		| (UInt32(r * 255.99f) << 16)
		| (UInt32(g * 255.99f) << 8)
		| (UInt32(b * 255.99f) << 0);
}

inline UInt32 hsColorRGBA::ToARGB32Premultiplied() const
{
	return (UInt32(a * 255.0f + 0.5f) << 24)
		| (UInt32(a * r * 255.0f + 0.5f) << 16)
		| (UInt32(a * g * 255.0f + 0.5f) << 8)
		| (UInt32(a * b * 255.0f + 0.5f) << 0);
}

inline hsColorRGBA operator+(const hsColorRGBA& s, const hsColorRGBA& t)
{
	hsColorRGBA res;
	return res.Set(s.r + t.r, s.g + t.g, s.b + t.b, s.a + t.a);
}
inline hsColorRGBA& hsColorRGBA::operator+=(const hsColorRGBA& s)
{
	r += s.r;
	g += s.g;
	b += s.b;
	a += s.a;
	return *this;
}

inline hsColorRGBA operator*(const hsColorRGBA& s, const hsColorRGBA& t)
{
	hsColorRGBA res;
	return res.Set(s.r * t.r, s.g * t.g, s.b * t.b, s.a * t.a);
}
inline hsColorRGBA& hsColorRGBA::operator*=(const hsColorRGBA& s)
{
	r *= s.r;
	g *= s.g;
	b *= s.b;
	a *= s.a;
	return *this;
}

inline hsColorRGBA operator-(const hsColorRGBA& s, const hsColorRGBA& t)
{
	hsColorRGBA res;
	return res.Set(s.r - t.r, s.g - t.g, s.b - t.b, s.a - t.a);
}
inline hsColorRGBA& hsColorRGBA::operator-=(const hsColorRGBA& s)
{
	r -= s.r;
	g -= s.g;
	b -= s.b;
	a -= s.a;
	return *this;
}

inline hsColorRGBA operator*(const hsColorRGBA& t, const hsScalar s)
{
	hsColorRGBA res;
	return res.Set(s * t.r, s * t.g, s * t.b, s * t.a);
}
inline hsColorRGBA operator*(const hsScalar s, const hsColorRGBA&t)
{
	return t * s;
}
inline hsColorRGBA& hsColorRGBA::operator*=(const hsScalar s)
{
	r *= s;
	g *= s;
	b *= s;
	a *= s;
	return *this;
}

class hsColorOverride
{
public:
	enum {
		kNone,
		kModColor,
		kModAlpha,
		kModShade
	};
	hsColorRGBA			fShade;
	hsColorRGBA			fColor;
	hsBool				fFlags;
};


#endif // hsColorRGBA_inc