/*
 * PlantPopulator.h
 *
 *  Created on: 8 mar 2010
 *      Author: Erik Ogenvik
 */

#ifndef PLANTPOPULATOR_H_
#define PLANTPOPULATOR_H_

#include "components/ogre/terrain/Types.h"
#include "components/ogre/OgreIncludes.h"

namespace WFMath {
class MTRand;
}


namespace Ember::OgreView::Terrain {
struct PlantAreaQueryResult;

namespace Foliage {

struct IScaler {
	/**
	 * @brief Dtor.
	 */
	virtual ~IScaler() = default;

	virtual void scale(WFMath::MTRand& rnd, const WFMath::Point<2>& pos, Ogre::Vector2& scale) = 0;
};

class UniformScaler : public IScaler {
public:
	UniformScaler(float min, float max);

	void scale(WFMath::MTRand& rnd, const WFMath::Point<2>& pos, Ogre::Vector2& scale) override;

private:
	float mMin;
	float mRange;
};

class Scaler : public IScaler {
public:
	Scaler(float xMin, float xMax, float yMin, float yMax);

	void scale(WFMath::MTRand& rnd, const WFMath::Point<2>& pos, Ogre::Vector2& scale) override;

private:
	float mXMin;
	float mXRange;
	float mYMin;
	float mYRange;
};

class PlantPopulator {
public:

	PlantPopulator(int layerIndex, std::unique_ptr<IScaler> scaler, size_t plantIndex);

	virtual ~PlantPopulator();

	virtual void populate(PlantAreaQueryResult& result, SegmentRefPtr segmentRef) = 0;

protected:

	int mLayerIndex;
	std::unique_ptr<IScaler> mScaler;
	size_t mPlantIndex;

};

}

}


#endif /* PLANTPOPULATOR_H_ */
