renderer2d.h

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#pragma once

#include <vector>
// GLEW
#include <GL/glew.h>

#include "../camera2d.h"
#include "../Shader.h"

namespace fireworks { namespace graphics {

    class Renderable2D;    

    class Renderer2D
    {
    public:
        Camera2D*                   m_Camera2D; 
    protected:
        std::vector<glm::mat4>    m_TransformationStack;
  const glm::mat4*                m_TransformationBack;
        // GLuint                   m_FontTexture;
    protected:
        Renderer2D(Camera2D* camera2D)
            : m_Camera2D(camera2D)
        {
            m_TransformationStack.push_back(glm::mat4(1.0f));
            m_TransformationBack = &m_TransformationStack.back();
        }
    public:
        void push(const glm::mat4& matrix, bool override = false)
        {
            if(override)
                m_TransformationStack.push_back(matrix);
            else
                m_TransformationStack.push_back(m_TransformationStack.back() * matrix);

            m_TransformationBack = &m_TransformationStack.back();
        }
        void pop()
        {
            // TODO: Add to logging system
            if(m_TransformationStack.size() > 1)
                m_TransformationStack.pop_back();

            m_TransformationBack = &m_TransformationStack.back();
        }

        virtual ~Renderer2D() { }
        virtual void begin() {}
        virtual void submit(const Renderable2D* renderable) = 0;
        virtual void end() {}
        virtual void flush() = 0;
    };

} }