Transformable.h

/*
 * Gamedev Framework (gf)
 * Copyright (C) 2016-2021 Julien Bernard
 *
 * This software is provided 'as-is', without any express or implied
 * warranty.  In no event will the authors be held liable for any damages
 * arising from the use of this software.
 *
 * Permission is granted to anyone to use this software for any purpose,
 * including commercial applications, and to alter it and redistribute it
 * freely, subject to the following restrictions:
 *
 * 1. The origin of this software must not be misrepresented; you must not
 *    claim that you wrote the original software. If you use this software
 *    in a product, an acknowledgment in the product documentation would be
 *    appreciated but is not required.
 * 2. Altered source versions must be plainly marked as such, and must not be
 *    misrepresented as being the original software.
 * 3. This notice may not be removed or altered from any source distribution.
 *
 * Part of this file comes from SFML, with the same license:
 * Copyright (C) 2007-2015 Laurent Gomila (laurent@sfml-dev.org)
 */
#ifndef GF_TRANSFORMABLE_H
#define GF_TRANSFORMABLE_H

#include "Anchor.h"
#include "Drawable.h"
#include "GraphicsApi.h"
#include "Matrix.h"
#include "Rect.h"
#include "Vector.h"

namespace gf {
#ifndef DOXYGEN_SHOULD_SKIP_THIS
inline namespace v1 {
#endif

  class GF_GRAPHICS_API Transformable : public Drawable {
  public:
    Transformable();

    void setOrigin(Vector2f origin);

    Vector2f getOrigin() const {
      return m_origin;
    }

    void setPosition(Vector2f position);

    Vector2f getPosition() const {
      return m_position;
    }

    void move(Vector2f offset);

    void setRotation(float angle);

    float getRotation() const {
      return m_rotation;
    }

    void rotate(float angle);

    void setScale(Vector2f factors);


    void setScale(float factor) {
      setScale({ factor, factor });
    }

    Vector2f getScale() const {
      return m_scale;
    }

    void scale(Vector2f factors);

    void scale(float factor) {
      scale({ factor, factor });
    }

    Matrix3f getTransform() const;

    Matrix3f getInverseTransform() const;

  protected:
    void setOriginFromAnchorAndBounds(Anchor anchor, const RectF& bounds);

  private:
    Vector2f m_origin;
    Vector2f m_position;
    float m_rotation;
    Vector2f m_scale;
  };

#ifndef DOXYGEN_SHOULD_SKIP_THIS
}
#endif
}

#endif // GF_TRANSFORMABLE_H