/*
 Copyright (C) 2009 Erik Ogenvik <erik@ogenvik.org>

 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 2 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, write to the Free Software Foundation,
 Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 */

#ifndef TERRAINUPDATETASK_H_
#define TERRAINUPDATETASK_H_

#include "framework/tasks/TemplateNamedTask.h"
#include "Types.h"

namespace Mercator {
class Terrain;

class BasePoint;
}

namespace Ember {
namespace OgreView {

namespace Terrain {

class TerrainHandler;

class TerrainInfo;

class SegmentManager;

class TerrainUpdateTask : public Tasks::TemplateNamedTask<TerrainUpdateTask> {
public:
	TerrainUpdateTask(Mercator::Terrain& terrain,
					  TerrainDefPointStore terrainPoints,
					  TerrainHandler& handler,
					  TerrainInfo& terrainInfo,
					  bool& hasTerrainInfo,
					  SegmentManager& segmentManager);

	~TerrainUpdateTask() override;

	void executeTaskInBackgroundThread(Tasks::TaskExecutionContext& context) override;

	bool executeTaskInMainThread() override;

private:

	typedef std::vector<std::pair<WFMath::Point<2>, Mercator::BasePoint >> UpdateBasePointStore;

	Mercator::Terrain& mTerrain;
	const TerrainDefPointStore mTerrainPoints;
	TerrainHandler& mTerrainHandler;
	TerrainInfo& mTerrainInfo;
	bool& mHasTerrainInfo;
	SegmentManager& mSegmentManager;

	std::vector<TerrainPosition> mUpdatedPositions;
	UpdateBasePointStore mUpdatedBasePoints;
};

}

}

}

#endif /* TERRAINUPDATETASK_H_ */
