batch_model.h

// © Joseph Cameron - All Rights Reserved

#ifndef GDK_GFX_BATCH_MODEL_H
#define GDK_GFX_BATCH_MODEL_H

#include <memory>
#include <vector>

#include <gdk/vertex_data.h>
#include <gdk/graphics_types.h>

namespace gdk
{
    class model;
    namespace graphics { class context; }

    // \brief a batch model is a model whos vertex data is made up of
    class batch_model final
    {
    public:
        size_t write_to_buffer(size_t vertexDataIndex, 
            const graphics_vector3_type &aPos, 
            const graphics_vector3_type &aRot = {},
            const graphics_vector3_type &aScale = {1});

        void rewrite_buffer_at(size_t BufferIndex, 
            size_t vertexDataIndex, 
            const graphics_vector3_type &pos,
            const graphics_vector3_type &rot,
            const graphics_vector3_type &sca = {1});

        vertex_data::interleaved_data_view view_to_interleaved_data();

        void clear_buffer();

        void update_model();
        
        //void update_model(size_t aBeginIndex, size_t aEndIndex);

        batch_model(std::shared_ptr<gdk::graphics::context> pContext, 
            std::vector<vertex_data> data);

        std::shared_ptr<gdk::model> model();

    private:
        std::shared_ptr<gdk::model> m_pModel;

        vertex_data m_Buffer = vertex_data({});

        std::vector<vertex_data> m_Inputs;
    };
}

#endif