// Ryzom - MMORPG Framework <http://dev.ryzom.com/projects/ryzom/>
// Copyright (C) 2010  Winch Gate Property Limited
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero 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 Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program.  If not, see <http://www.gnu.org/licenses/>.


#ifndef RZ_CTRL_POLYGON_H
#define RZ_CTRL_POLYGON_H

#include "ctrl_base.h"
#include "view_renderer.h"
//
#include "nel/misc/geom_ext.h"
#include "nel/misc/polygon.h"

namespace NLMISC
{
	class CVector2f;
}

/** Display of an arbitrary polygon in the ui.
  * polygons are clipped & batched.
  *
  * Derives from CCtrlBase in order to provide button / tooltip capability
  *
  * \author Nicolas Vizerie
  * \author Nevrax France
  * \date 1/2006
  */
class CCtrlPolygon : public CCtrlBase
{
public:
	CCtrlPolygon();
	virtual uint32 getMemory() { return (uint32)(sizeof(*this)+_Id.size()); }
	virtual void updateCoords();
	virtual void draw();
	/** Change the vertices. This is costly because concav / complex polys are split in a list of triangles
	  */
	void	setVertices(const std::vector<NLMISC::CVector> &vertices);
	const std::vector<NLMISC::CVector> &getVertices() const { return _Poly.Vertices; }
	// test if current position in inside the current (transformed) poly (in window space)
	bool	contains(const NLMISC::CVector2f &pos) const;
	// color
	void			setColorRGBA(NLMISC::CRGBA col) { _Color = col; }
	NLMISC::CRGBA	getColorRGBA() const { return _Color; }
	// from CViewBase
	virtual sint32  getAlpha() const { return (sint32) _Color.A; }
	virtual void	setAlpha(sint32 a);
	/** Change the matrix for this poly. Changing the matrix is usually cheaper than changing
      * The vertices because complex poly do not have to be split again
	  */
	//void setMatrix(const NLMISC::CMatrix &mat);
	//const NLMISC::CMatrix &getMatrix() const { return _Matrix; }
	// test if last call to 'setVertices' was for a valid poly (e.g one that doesn't overlapp itself)
	bool isValid() const { return _Valid; }
	virtual bool		handleEvent (const CEventDescriptor &event);

	// no capturable by default (just tooltip capability wanted)
	virtual	bool		isCapturable() const { return false; }
private:
	NLMISC::CPolygon _Poly;
	NLMISC::CPolygon2D _XFormPoly;
	//NLMISC::CMatrix  _Matrix;
	bool			 _Valid;
	bool			 _Touched;
	NLMISC::CRGBA				   _Color;
	std::vector<NLMISC::CTriangle> _Tris;
	std::vector<NLMISC::CTriangle> _RealTris; // clipped tris in screen coordinates
private:
	void updateBoudingRect();
protected:
	// TMP TMP : have to solve matrix imprecision for display in map -> do the full computation for now ...
	virtual void computeScaledVertex(NLMISC::CVector2f &dest, const NLMISC::CVector2f &src);
public:
	void touch();
};

#endif