#ifndef STROKEDEFORMATION_IMPL_H
#define STROKEDEFORMATION_IMPL_H

/**
 * @author  Fabrizio Morciano <fabrizio.morciano@gmail.com>
 */

#include "ext/StrokeDeformation.h"

#undef DVAPI
#undef DVVAR
#ifdef TNZEXT_EXPORTS
#define DVAPI DV_EXPORT_API
#define DVVAR DV_EXPORT_VAR
#else
#define DVAPI DV_IMPORT_API
#define DVVAR DV_IMPORT_VAR
#endif

#include "ExtUtil.h"

#if defined(WIN32) && (_MSC_VER <= 1200)
// to avoid annoying warning
#pragma warning(push)
#pragma warning(disable : 4251)
#endif

namespace ToonzExt
{
class DVAPI
	StrokeDeformationImpl
{
private:
	bool
	init(const ContextStatus *);

	bool
	computeStroke2Transform(const ContextStatus *s,
							TStroke *&stroke2transform,
							double &w,
							ToonzExt::Interval &extremes);

	ToonzExt::Potential
		*potential_;

	static TStroke *
		copyOfLastSelectedStroke_; // deep copy stroke selected previously

	int
		cursorId_;

protected:
	TStroke
		*stroke2manipulate_;

	static TStroke *&
	getLastSelectedStroke();

	static void
	setLastSelectedStroke(TStroke *);

	static int &
	getLastSelectedDegree();

	static void
	setLastSelectedDegree(int degree);

	static ToonzExt::Intervals &
	getSpiresList();

	static ToonzExt::Intervals &
	getStraightsList();

	ToonzExt::StrokeParametricDeformer
		*deformer_;

	int
		shortcutKey_;

	double
		old_w0_;

	TPointD
		old_w0_pos_;

	// ref to simplify access
	std::vector<TStroke *>
		strokes_;

	StrokeDeformationImpl();

	/**
    * Is this the correct deformation?
    */
	virtual bool
	check_(const ContextStatus *) = 0;

	/**
    * Retrieve the nearest extremes to point selected.
    */
	virtual bool
	findExtremes_(const ContextStatus *,
				  Interval &) = 0;

	virtual double
	findActionLength() = 0;

public:
	virtual ~StrokeDeformationImpl();

	ToonzExt::Interval
	getExtremes();

	static const ContextStatus *&
	getImplStatus();

	const TStroke *
	getStrokeSelected() const
	{
		if (getImplStatus())
			return this->getImplStatus()->stroke2change_;
		return 0;
	}

	const TStroke *
	getCopiedStroke() const
	{
		return this->getStrokeSelected();
	}

	/**
     * Wrapper for activate.
     */
	virtual bool
	activate_impl(const ContextStatus *);

	/**
    * Modify stroke.
    */
	virtual void
	update_impl(const TPointD &delta);

	/**
    * Reduce control points and change stroke.
    */
	virtual TStroke *
	deactivate_impl();

	bool
	check(const ContextStatus *);

	/**
    * Restore last good status.
    */
	virtual void
	reset();

	void
	setPotential(Potential *);

	/**
     * Apply a designer on current deformation.
     */
	virtual void
	draw(Designer *);

	TStroke *
	getTransformedStroke();

	ToonzExt::Potential *
	getPotential();

	TPointD &
	oldW0();

	int
	getShortcutKey() const
	{
		return shortcutKey_;
	}

	int
	getCursorId() const
	{
		return cursorId_;
	}
	void
	setCursorId(int id)
	{
		cursorId_ = id;
	}
};
}

#if defined(WIN32) && (_MSC_VER <= 1200)
#pragma warning(pop)
#endif

#endif /* STROKEDEFORMATION_IMPL_H */
//-----------------------------------------------------------------------------
//  End Of File
//-----------------------------------------------------------------------------