Graphics.h

/*

Copyright (c) 2018, Johnathan Corkery. (jcorkery@umich.edu)
All rights reserved.

This file is part of the Dynacoe project (https://github.com/jcorks/Dynacoe)
Dynacoe was released under the MIT License, as detailed below.



Permission is hereby granted, free of charge, to any person obtaining a copy 
of this software and associated documentation files (the "Software"), to deal 
in the Software without restriction, including without limitation the rights 
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell 
copies of the Software, and to permit persons to whom the Software is furnished 
to do so, subject to the following conditions:

The above copyright notice and this permission notice shall
be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 
EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 
MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. 
IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, 
DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER 
DEALINGS IN THE SOFTWARE.



*/


#ifndef DC_GRAPHICS_INCLUDED
#define DC_GRAPHICS_INCLUDED










#include <Dynacoe/Util/Chain.h>
#include <Dynacoe/Color.h>
#include <Dynacoe/Image.h>
#include <Dynacoe/Particle.h>

#include <Dynacoe/Modules/Assets.h>
#include <Dynacoe/Components/Render2D.h>
#include <Dynacoe/Components/RenderMesh.h>
#include <Dynacoe/Camera.h>

#include <string>
#include <iostream>
#include <fstream>
#include <map>





namespace Dynacoe {
class Assets;
class Renderer;









class Graphics : public Module {
  public:



    /* Drawing */


    static void Draw(Render2D &);






    static void Draw(      RenderMesh &);





    static void Commit();



    static void DrawEachFrame(bool doIt);

    static bool DrawEachFrame();







    static Renderer * GetRenderer();

    static void SetRenderer(Renderer *);











    static void EnableFiltering(bool doIt);






    static void SetCamera3D(Camera &);

    static void SetCamera2D(Camera &);

    static void SetRenderCamera(Camera &);

    static Camera & GetCamera3D();
    static Camera & GetCamera2D();
    static Camera & GetRenderCamera();

    
  private:
    friend class Assets;
    friend class GraphicsResizeCallback;
    friend class Image;

    static Renderer * drawBuffer;



    /* Drawing state and display management */
    static void setDisplayMode(Renderer::Polygon p, Renderer::Dimension, Renderer::AlphaRule a);

    // draw immediates
    static float * transformResult;
    static float * transformResult2;
    static float * quadVertices2D;





    //Identical to coebeefSys function of the same name.
    //internal use onlyx

    static AssetID fontID;


    // Initializes a new particle as a copy of a cached particle
    static bool autoRefresh;

    static int filter;

    static AssetID lastDisplayID;


    friend class Aspect3D;
    friend class Material;


    static void storeFont();

    static Image * errorImage;
    static std::vector<int> consoleTextures;



    struct GraphicsState {
        Renderer::Dimension dim;
        Renderer::Polygon polygon;
        Renderer::AlphaRule alpha;



        Entity::ID currentCamera3D;
        Entity::ID currentCamera2D;
        Entity::ID currentCameraTarget;
    };

    struct FontSpec {
        int height;
        int width;
        float fontGlyphScaleWidth;
    };

    static GraphicsState state;
    static FontSpec defaultFontSpec;
  public:
        static void storeSystemImages();


  public:
    std::string GetName() { return "Graphics"; }
    void Init(); void InitAfter(); void RunBefore(); void RunAfter(); void DrawBefore(); void DrawAfter();
    Backend * GetBackend();
    static void Flush2D();
    static void UpdateCameraTransforms(Camera * );
};
};



#endif