/* Copyright (C) 2010 Wildfire Games.
 * This file is part of 0 A.D.
 *
 * 0 A.D. 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 2 of the License, or
 * (at your option) any later version.
 *
 * 0 A.D. 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 0 A.D.  If not, see <http://www.gnu.org/licenses/>.
 */

/*
 * Billboarding sprite class - always faces the camera. It does this by
 * getting the current model view matrix state.
 */

// Usage: Instantiate, then be sure to pass a loaded
// (using CTextureManager) texture before calling Render().

#ifndef INCLUDED_SPRITE
#define INCLUDED_SPRITE

//--------------------------------------------------------
//  Includes / Compiler directives
//--------------------------------------------------------

#include "maths/Vector3D.h"
#include "Texture.h"

//--------------------------------------------------------
//  Declarations
//--------------------------------------------------------

class CSprite 
{
public:
	CSprite();
	~CSprite();

	void Render();

	void SetTexture(const CTexturePtr& texture);

	void SetSize(float width, float height);

	float GetWidth();
	void  SetWidth(float width);

	float GetHeight();
	void  SetHeight(float height);

	CVector3D GetTranslation();
	void SetTranslation(CVector3D pos);
	void SetTranslation(float x, float y, float z);

	CVector3D GetScale();
	void SetScale(CVector3D scale);
	void SetScale(float x, float y, float z);

	void SetColour(float * colour);
	void SetColour(float r, float g, float b, float a = 1.0f);
private:
	void BeginBillboard();
	void EndBillboard();

	CTexturePtr	m_texture;

	CVector3D	m_coords[4];

	float	    m_width;
	float		m_height;

	CVector3D	m_translation;
	CVector3D	m_scale;

	float m_colour[4];
};

#endif // INCLUDED_SPRITE