webgl1es2_model.h

// © Joseph Cameron - All Rights Reserved

#ifndef GDK_GFX_VERTEX_DATA_H
#define GDK_GFX_VERTEX_DATA_H

#include <gdk/model.h>
#include <gdk/webgl1es2_vertex_format.h>
#include <jfc/shared_proxy_ptr.h>
#include <jfc/unique_handle.h>

#include <iosfwd>
#include <string>

namespace gdk
{
    class webgl1es2_model final : public model
    {
    public:
        using attribute_component_data_type = GLfloat; 

        using index_data_type = GLushort; 

        enum class Type 
        {
            Dynamic,

            Static, 

            Stream
        };
        
        enum class PrimitiveMode 
        {
            Points, 

            Lines, 
            
            LineStrip, 
            
            LineLoop, 

            Triangles,
            
            TriangleStrip, 

            TriangleFan
        };
            
        void bind(const webgl1es2_shader_program &aShaderProgram) const;

        void draw() const;

        virtual void update_vertex_data(const UsageHint &,
            const vertex_data& vertexDataView) override;
      
        bool operator==(const webgl1es2_model &);
        bool operator!=(const webgl1es2_model &);

        webgl1es2_model &operator=(webgl1es2_model &&) = default;
        webgl1es2_model(webgl1es2_model &&) = default;
           
        webgl1es2_model &operator=(const webgl1es2_model &other) = delete;
        webgl1es2_model(const webgl1es2_model &) = delete;
      
        webgl1es2_model(const UsageHint &aUsage, const vertex_data &aData);
        
        static const jfc::shared_proxy_ptr<gdk::webgl1es2_model> Quad;
        static const jfc::shared_proxy_ptr<gdk::webgl1es2_model> Cube; 

    private:
        jfc::unique_handle<GLuint> m_IndexBufferHandle;

        GLsizei m_IndexCount = 0; 
        
        jfc::unique_handle<GLuint> m_VertexBufferHandle; 

        webgl1es2_vertex_format m_vertex_format = webgl1es2_vertex_format::Pos3uv2; 
        
        GLsizei m_VertexCount = 0; 

        PrimitiveMode m_PrimitiveMode = PrimitiveMode::Triangles; 
    };
}

#endif