TextureAtlas.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.
 */
#ifndef GF_TEXTURE_ATLAS_H
#define GF_TEXTURE_ATLAS_H

#include <map>
#include <string>

#include "GraphicsApi.h"
#include "Path.h"
#include "Rect.h"

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

  class Texture;
  class ResourceManager;

  class GF_GRAPHICS_API TextureAtlas {
  public:
    TextureAtlas()
    : m_texture(nullptr)
    {

    }

    TextureAtlas(const Path& filename);

    TextureAtlas(const Path& filename, ResourceManager& resources);

    void setTexturePath(const Path& path) {
      m_texturePath = path;
    }

    const Path& getTexturePath() const {
      return m_texturePath;
    }

    void setTexture(const Texture& texture) {
      m_texture = &texture;
    }

    const Texture& getTexture() const {
      return *m_texture;
    }

    bool hasTexture() const {
      return m_texture != nullptr;
    }

    void unsetTexture() {
      m_texture = nullptr;
    }

    void addSubTexture(std::string name, const RectI& rect);

    RectI getSubTexture(const std::string& name) const;

    RectF getTextureRect(const std::string& name) const;

  private:
    Path m_texturePath;
    const Texture *m_texture;
    std::map<std::string, RectI> m_rects;
  };

#ifndef DOXYGEN_SHOULD_SKIP_THIS
}
#endif
}

#endif // GF_TEXTURE_ATLAS_H