////////////////////////////////////////////////////////////////////////////////
//    Scorched3D (c) 2000-2011, 2025, 2026
//
//    This file is part of Scorched3D.
//
//    Scorched3D 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.
//
//    Scorched3D 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, write to the Free Software Foundation, Inc.,
//    51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
////////////////////////////////////////////////////////////////////////////////

#ifndef __INCLUDE_VisibilityPatchQuad_hpp_INCLUDE__
#define __INCLUDE_VisibilityPatchQuad_hpp_INCLUDE__

#include <land/VisibilityPatchInfo.hpp>
#include <common/Vector.hpp>

class VisibilityPatchGrid;

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

	void setLocation(
		VisibilityPatchGrid* patchGrid,
		int                  x,
		int                  y,
		int                  size,
		int                  mapwidth,
		int                  mapheight,
		int                  roofBaseHeight
	);
	void calculateGroundVisibility( VisibilityPatchInfo& patchInfo, Vector& cameraPos, float C );
	void calculateRoofVisibility( VisibilityPatchInfo& patchInfo, Vector& cameraPos, float C );

protected:
	int    x_;
	int    y_;
	int    size_;
	Vector position_;
	Vector roofPosition_;

	LandVisibilityPatch*   landVisibilityPatch_;
	RoofVisibilityPatch*   roofVisibilityPatch_;
	WaterVisibilityPatch*  waterVisibilityPatch_;
	TargetVisibilityPatch* targetVisibilityPatch_;
	VisibilityPatchQuad *  topLeft_, *topRight_;
	VisibilityPatchQuad *  botLeft_, *botRight_;

	void setGroundNotVisible( VisibilityPatchInfo& patchInfo, Vector& cameraPos );
	void setGroundVisible( VisibilityPatchInfo& patchInfo, Vector& cameraPos, float C );
	void setRoofNotVisible( VisibilityPatchInfo& patchInfo, Vector& cameraPos );
	void setRoofVisible( VisibilityPatchInfo& patchInfo, Vector& cameraPos, float C );
};

#endif  // __INCLUDE_VisibilityPatchQuad_hpp_INCLUDE__
