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  1. #include <iostream>
  2. #include <vector>
  3.  
  4. class TextureLoader;
  5. class Texture
  6. {
  7. public:
  8.  
  9.     typedef std::size_t Id;
  10.     static const Id NULL_ID = 0;
  11.  
  12. private:
  13.  
  14.     // width, height, depth
  15.  
  16.     Id _id = NULL_ID;
  17. };
  18.  
  19. class TextureLoader
  20. {
  21. public:
  22.  
  23.     virtual bool load(const std::string& filepath, Texture* texture) = 0;
  24.     virtual void destroy(Texture* texture) = 0;
  25. };
  26.  
  27. class OglTextureLoader : public TextureLoader
  28. {
  29. public:
  30.  
  31.     virtual bool load(const std::string& filepath, Texture* texture)
  32.     {
  33.         /*
  34.         // load the texture in an image
  35.         GLuint actualTexture = 0;
  36.         // gl specific code...
  37.          texture->_id = nextId();
  38.         // resize array if _actualTextures if required
  39.         _actualTextures[texture->id] = actualTexture;
  40.         */
  41.         std::cout << "Loading image: " << filepath << "...\n";
  42.         std::cout << "Uploading image to OpenGL Texture...\n";
  43.         return true;
  44.     }
  45.  
  46.     virtual void destroy(Texture* texture)
  47.     {
  48.         // glDeleteTextures(_oglTextures[texture->_id]);
  49.         std::cout << "Destroying OpenGL Texture\n";
  50.     }
  51.  
  52. private:
  53.  
  54.     std::vector<unsigned int /* GLuint */> _oglTextures; // use texture id's for index
  55. };
  56.  
  57. int main(int argc, char* argv[])
  58. {
  59.     Texture texture;
  60.     TextureLoader* textureLoader = new OglTextureLoader;
  61.  
  62.     if(!textureLoader->load("something.png", &texture))
  63.     {
  64.         std::cout << "Failed to load something.png";
  65.     }
  66.  
  67.     textureLoader->destroy(&texture);
  68.  
  69.     delete textureLoader;
  70.     return 0;
  71. }
Success #stdin #stdout 0s 3028KB
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stdin
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Standard input is empty
stdout
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Loading image: something.png...
Uploading image to OpenGL Texture...
Destroying OpenGL Texture
https://ideone.com/fGeejl
language:
C++ (gcc 8.3)
created:
11 years ago
visibility:
secret

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