RenderAttr.h

/********************************************************************/
/* Copyright (c) 2015 DG Technologies Inc. and Yuzi Mizuno          */
/* All rights reserved.                                             */
/********************************************************************/
#ifndef _MGRenderAttr_HH_
#define _MGRenderAttr_HH_

#include "mgGL/Color.h"

class MGMaterial;
class MGOfstream;
class MGIfstream;

//
//Define MGRenderAttr Class.


class MG_DLL_DECLR MGRenderAttr:public MGGLAttrib{

public:

enum RENDERSIDE{
    UNDEFINED=MGGLAttrib::UNDEFINED,
    DISABLED=MGGLAttrib::DISABLED,
    FRONT=GL_FRONT,     
    BACK=GL_BACK,       
    FRONT_AND_BACK=GL_FRONT_AND_BACK    
};

MG_DLL_DECLR friend GLenum GLrender_side(RENDERSIDE rs){return static_cast<GLenum>(rs);};

MGRenderAttr(
    RENDERSIDE rs=FRONT
):MGGLAttrib(static_cast<int>(rs)),m_color(MGColor::UNDEFINED),
m_material(0),m_back_material(0){;};

MGRenderAttr(
    const MGColor& solid_color
):MGGLAttrib(static_cast<int>(FRONT)),m_color(solid_color),
m_material(0),m_back_material(0){;};

MGRenderAttr(const MGRenderAttr& attr);

~MGRenderAttr();

MGRenderAttr& operator=(const MGGel& gel2);
MGRenderAttr& operator=(const MGRenderAttr& gel2);

bool operator<(const MGRenderAttr& gel2)const;
bool operator<(const MGGel& gel2)const;


MGRenderAttr* clone()const;

void exec(mgVBO& vbo)const;

bool is_color_shading()const;

bool is_highlight_attrib()const{return true;};

bool is_texture_shading()const;

bool material_defined()const;
const MGMaterial* material()const{return m_material;};

void set_material(
    RENDERSIDE rs,
    const float ambient[3],
    const float diffuse[3],
    const float specular[3],
    const float emission[3],
    float shininess=0.,
    float transparency=0.
);

void set_back_material(
    const float ambient[3],
    const float diffuse[3],
    const float specular[3],
    const float emission[3],
    float shininess=0.,
    float transparency=0.
);

void set_render_side(RENDERSIDE side=FRONT){m_flag=static_cast<int>(side);};

const MGMaterial* back_material()const;

RENDERSIDE render_side()const{return static_cast<RENDERSIDE>(m_flag);};
GLenum GLrender_side()const{return static_cast<GLenum>(render_side());};

void set_color_shading(const MGColor& colr);

void drawAttrib(
    mgVBO& vbo,
    bool no_color=false 
)const{exec(vbo);};

void render(mgVBO& vbo)const{exec(vbo);};

void set_draw_attrib_mask(unsigned int& mask)const;

void reset_draw_attrib_mask(unsigned int& mask)const{;};

void set_render_attrib_mask(unsigned int& mask)const;

void reset_render_attrib_mask(unsigned int& mask)const;

long identify_type() const{return MGRENDER_ATTR_TID;};

std::string whoami()const{return "RenderAttr";};

void ReadMembers(MGIfstream& buf);
void WriteMembers(MGOfstream& buf)const;

std::ostream& out(std::ostream&) const;

private:

    MGColor m_color;

    MGMaterial* m_material;     
    MGMaterial* m_back_material;

    friend class MGAppearance;

};
 // end of GLAttrib group
#endif