#pragma once

#ifndef DEFORMATIONSELECTOR_H

#define DEFORMATIONSELECTOR_H

#include "ext/StrokeDeformationImpl.h"

namespace ToonzExt {

/**

   * @brief This class is a Singleton that selects the correct

   *  StrokeDeformationImpl that will use StrokeDeformation.

   *

   * The selection use aspect of stroke (type of corner, smoothness,

   * ...) and priority of StrokeDeformationImpl itself.

   * Priority can manage simply some strange case (corner that

   * seems to be straight corner and smooth corner).

   *

   * @note Selection can be overridden by user.

   * @note Private use only.

   */

class DeformationSelector {

  typedef std::pair<strokedeformationimpl *,="" int=""> Deformation;</strokedeformationimpl>

  std::vector<deformation> ref_;</deformation>

  DeformationSelector();

  DeformationSelector(const DeformationSelector &);

  DeformationSelector operator=(const DeformationSelector &);

public:

  ~DeformationSelector();

  static DeformationSelector *instance();

  void add(StrokeDeformationImpl *deformation, int priority);

  StrokeDeformationImpl *getDeformation(const ContextStatus *status);

};

}

/**

 * @brief This macro manage the registration in internal catalog

 * of deformations.

 */

#define REGISTER(myClass, priority)                                            \

  static bool add_in_array() {                                                 \

    DeformationSelector::instance()->add(myClass::instance(), priority);       \

    return true;                                                               \

  }                                                                            \

  static bool done = add_in_array();

#endif /* DEFORMATIONSELECTOR_H */

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