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/* ----------------------------------------------------------------------- *
 * This file is part of GEL, http://www.imm.dtu.dk/GEL
 * Copyright (C) the authors and DTU Informatics
 * For license and list of authors, see ../../doc/intro.pdf
 * ----------------------------------------------------------------------- */

/**
 * @file IDBufferWireFrameRenderer.h
 * @brief Render a Manifold in wireframe. Not fast - but general.
 */

#ifndef __GLGRAPHICS_IDBUFFERWIREFRAMERENDERER_H__
#define __GLGRAPHICS_IDBUFFERWIREFRAMERENDERER_H__

#include "../GL/glew.h"
#include "../CGLA/Vec3uc.h"
#include "../CGLA/Vec3f.h"
#include "../HMesh/Manifold.h"

namespace GLGraphics
{
        /// Class for ID buffer based wireframe rendering. Handles all types of gons. Use with Manifold
        class IDBufferWireframeRenderer
                {
                        HMesh::Manifold* mesh;
                        
                        GLint id_attrib;
                        GLint popp_attrib;
                        GLint disp_attrib;
                        int XSZ, YSZ;
                        float thickness;
                        float transition;
                        
                        GLuint vs,fs;
                        GLuint line_prog;
                        GLuint idmap;
                        
                        GLuint vertex_buffername;
                        GLuint colors_buffername;                       
                        GLuint line_id_attrib;
                        GLuint line_vertex_pos;
                        GLuint line_disp_attrib;
                        GLuint line_opp_attrib;
                        
                        int triangles, quads;
                public:
                        
                        CGLA::Vec3uc id_get(unsigned int i)
                        {
                                i = i+1;
                                return CGLA::Vec3uc(i&0xff, (i&0xff00)/256, (i&0xff0000)/65536);
                        }
                        
                        IDBufferWireframeRenderer(int _XSZ, int _YSZ, 
                                                          HMesh::Manifold& mesh,
                                                          float _thickness=0.0, 
                                                          float _transition=1.8,
                                                          int atten_mode=0);
                        
                        ~IDBufferWireframeRenderer();
                        
                        void draw(const CGLA::Vec3f& color, 
                                        const CGLA::Vec3f& clear_color);
                };
        
}
#endif