atb_vertices

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// Copyright (C) 2010, Guy Barrand. All rights reserved.
// See the file tools.license for terms.
 
#ifndef tools_sg_atb_vertices
#define tools_sg_atb_vertices
 
#include "vertices"
 
namespace tools {
namespace sg {
 
class atb_vertices : public vertices {
  TOOLS_NODE(atb_vertices,tools::sg::atb_vertices,vertices)
public:
  mf<float> rgbas;
  mf<float> nms;
  sf<bool> do_back;
  sf<float> epsilon;
  sf<bool> draw_edges;
public:
  virtual const desc_fields& node_desc_fields() const {
    TOOLS_FIELD_DESC_NODE_CLASS(tools::sg::atb_vertices)
    static const desc_fields s_v(parent::node_desc_fields(),5, //WARNING : take care of count.
      TOOLS_ARG_FIELD_DESC(rgbas),
      TOOLS_ARG_FIELD_DESC(nms),
      TOOLS_ARG_FIELD_DESC(do_back),
      TOOLS_ARG_FIELD_DESC(epsilon),
      TOOLS_ARG_FIELD_DESC(draw_edges)
    );
    return s_v;
  }
  virtual void protocol_one_fields(std::vector<field*>& a_fields) const {
    parent::protocol_one_fields(a_fields);
    const field* _draw_edges = static_cast<const field*>(&draw_edges);
    removep<field>(a_fields,_draw_edges);
  }
private:
  void add_fields(){
    add_field(&rgbas);
    add_field(&nms);
    add_field(&do_back);
    add_field(&epsilon);
    add_field(&draw_edges);
  }
protected: //gstos
  virtual unsigned int create_gsto(std::ostream&,sg::render_manager& a_mgr) {
    //unsigned int npt = xyzs.values().size()/3;
    //::printf("debug : atb_vertices : %lu : create_gsto : %u\n",this,npt);
 
    std::vector<float> gsto_data;
 
    if(rgbas.size()) {
      if(nms.size()) {
        if(do_back.value()) {
          append(gsto_data,xyzs.values());
          append(gsto_data,nms.values());
          append(gsto_data,m_back_xyzs);
          append(gsto_data,m_back_nms);
          append(gsto_data,rgbas.values());
        } else {
          append(gsto_data,xyzs.values());
          append(gsto_data,nms.values());
          append(gsto_data,rgbas.values());
        }
        if(draw_edges.value()) {
          // allocate edges :
          size_t pos_edges = gsto_data.size();
          append(gsto_data,xyzs.values());
          append(gsto_data,xyzs.values());
          float* pxyz = vec_data<float>(xyzs.values());
          float* pedges = vec_data<float>(gsto_data)+pos_edges;
          size_t npt = xyzs.values().size()/3;
          size_t ntri = npt/3;
          for(size_t itri=0;itri<ntri;itri++) {
            // first edge :
            *pedges = *(pxyz+0);pedges++;
            *pedges = *(pxyz+1);pedges++;
            *pedges = *(pxyz+2);pedges++;
 
            *pedges = *(pxyz+3);pedges++;
            *pedges = *(pxyz+4);pedges++;
            *pedges = *(pxyz+5);pedges++;
 
            // second edge :
            *pedges = *(pxyz+3);pedges++;
            *pedges = *(pxyz+4);pedges++;
            *pedges = *(pxyz+5);pedges++;
 
            *pedges = *(pxyz+6);pedges++;
            *pedges = *(pxyz+7);pedges++;
            *pedges = *(pxyz+8);pedges++;
 
            // third edge :
            *pedges = *(pxyz+6);pedges++;
            *pedges = *(pxyz+7);pedges++;
            *pedges = *(pxyz+8);pedges++;
 
            *pedges = *(pxyz+0);pedges++;
            *pedges = *(pxyz+1);pedges++;
            *pedges = *(pxyz+2);pedges++;
 
            pxyz += 9;
          }
 
        }
      } else {
        append(gsto_data,xyzs.values());
        append(gsto_data,rgbas.values());
      }
    } else {
      if(nms.size()) {
        append(gsto_data,xyzs.values());
        append(gsto_data,nms.values());
      } else {
        append(gsto_data,xyzs.values());
      }
    }
    return a_mgr.create_gsto_from_data(gsto_data);
  }
 
public:
  virtual void render(render_action& a_action) {
    if(touched()) {
      if(do_back.value()) gen_back();
      if(draw_edges.value()) gen_edges();
#ifdef __APPLE__
      m_all_a_one = true;
     {tools_vforcit_npp(float,rgbas.values(),it) {
        if(*(it+3)!=1) {m_all_a_one = false;break;}
        it += 4;
      }}
#endif //__APPLE__
      clean_gstos();
      reset_touched();
    }
    if(xyzs.empty()) return;
 
    const state& state = a_action.state();
 
    if(state.m_use_gsto) {
      unsigned int _id = get_gsto_id(a_action.out(),a_action.render_manager());
      if(_id) {
        a_action.begin_gsto(_id);
        if(rgbas.size()) {
#ifdef __APPLE__
          bool restore_blend = check_set_blend(a_action);
#endif
          if(nms.size()) {
            size_t npt = xyzs.values().size()/3;
            bufpos pos_xyzs = 0;
            bufpos pos_nms = 0;
            bufpos pos_back_xyzs = 0;
            bufpos pos_back_nms = 0;
            bufpos pos_rgbas = 0;
            bufpos pos_edges = 0;
           {size_t sz = npt*3;
            if(do_back.value()) {
              pos_xyzs = 0;
              pos_nms = pos_xyzs+sz*sizeof(float);  //bytes
              pos_back_xyzs = pos_nms+sz*sizeof(float);
              pos_back_nms = pos_back_xyzs+sz*sizeof(float);
              pos_rgbas = pos_back_nms+sz*sizeof(float);
            } else {
              pos_xyzs = 0;
              pos_nms = pos_xyzs+sz*sizeof(float);
              pos_rgbas = pos_nms+sz*sizeof(float);
            }}
            if(draw_edges.value()) {
              pos_edges = pos_rgbas+npt*4*sizeof(float);
            }
            if(gl::is_line(mode.value())) {
              //Same logic as Inventor SoLightModel.model = BASE_COLOR.
              a_action.set_lighting(false);
              if(do_back.value()) a_action.draw_gsto_vcn(mode.value(),npt,pos_back_xyzs,pos_rgbas,pos_back_nms);
              a_action.draw_gsto_vcn(mode.value(),npt,pos_xyzs,pos_rgbas,pos_nms);
              a_action.set_lighting(state.m_GL_LIGHTING);
            } else if(mode.value()==gl::triangles()) {
              if(draw_edges.value()) {
                a_action.color4f(0,0,0,1);
                a_action.line_width(1);
                a_action.draw_gsto_v(gl::lines(),2*npt,pos_edges);
                //pushes back the filled polygons to avoid z-fighting with lines
                a_action.set_polygon_offset(true);
 
                a_action.color4f(state.m_color);
                a_action.line_width(state.m_line_width);
                //a_action.set_lighting(state.m_GL_LIGHTING);
              }
              if(do_back.value()) a_action.draw_gsto_vcn(mode.value(),npt,pos_back_xyzs,pos_rgbas,pos_back_nms);
              a_action.draw_gsto_vcn(mode.value(),npt,pos_xyzs,pos_rgbas,pos_nms);
              if(draw_edges.value()) a_action.set_polygon_offset(state.m_GL_POLYGON_OFFSET_FILL);
            } else {
              if(do_back.value()) a_action.draw_gsto_vcn(mode.value(),npt,pos_back_xyzs,pos_rgbas,pos_back_nms);
              a_action.draw_gsto_vcn(mode.value(),npt,pos_xyzs,pos_rgbas,pos_nms);
            }
 
          } else {
            size_t npt = xyzs.values().size()/3;
            bufpos pos_xyzs = 0;
            bufpos pos_rgbas = npt*3*sizeof(float);
            if(gl::is_line(mode.value())) {
              //Same logic as Inventor SoLightModel.model = BASE_COLOR.
              a_action.set_lighting(false);
              a_action.draw_gsto_vc(mode.value(),npt,pos_xyzs,pos_rgbas);
              a_action.set_lighting(state.m_GL_LIGHTING);
            } else {
              a_action.draw_gsto_vc(mode.value(),npt,pos_xyzs,pos_rgbas);
            }
          }
#ifdef __APPLE__
          if(restore_blend) a_action.set_blend(true);
#endif
        } else { //rgbas.empty()
          if(nms.size()) {
            size_t npt = xyzs.values().size()/3;
            bufpos pos_xyzs = 0;
            bufpos pos_nms = npt*3*sizeof(float);
            if(gl::is_line(mode.value())) {
              //Same logic as Inventor SoLightModel.model = BASE_COLOR.
              a_action.set_lighting(false);
              a_action.draw_gsto_vn(mode.value(),npt,pos_xyzs,pos_nms);
              a_action.set_lighting(state.m_GL_LIGHTING);
            } else {
              a_action.draw_gsto_vn(mode.value(),npt,pos_xyzs,pos_nms);
            }
          } else {
            size_t npt = xyzs.values().size()/3;
            bufpos pos = 0;
            if(gl::is_line(mode.value())) {
              //Same logic as Inventor SoLightModel.model = BASE_COLOR.
              a_action.set_lighting(false);
              a_action.draw_gsto_v(mode.value(),npt,pos);
              a_action.set_lighting(state.m_GL_LIGHTING);
            } else {
              a_action.draw_gsto_v(mode.value(),npt,pos);
            }
          }
        }
        a_action.end_gsto();
        return;
 
      } else { 
        // use immediate rendering.
      }
 
    } else {
      clean_gstos(&a_action.render_manager());
    }
 
    // immediate rendering :
    if(rgbas.size()) {
 
#ifdef __APPLE__
      bool restore_blend = check_set_blend(a_action);
#endif
 
      if(nms.size()) {
          if(gl::is_line(mode.value())) {
            //Same logic as Inventor SoLightModel.model = BASE_COLOR.
            a_action.set_lighting(false);
            if(do_back.value())
              a_action.draw_vertex_color_normal_array(mode.value(),m_back_xyzs,rgbas.values(),m_back_nms);
            a_action.draw_vertex_color_normal_array(mode.value(),xyzs.values(),rgbas.values(),nms.values());
            a_action.set_lighting(state.m_GL_LIGHTING);
          } else if(mode.value()==gl::triangles()) {
            if(draw_edges.value()) {
              a_action.color4f(0,0,0,1);
              a_action.line_width(1);
              a_action.draw_vertex_array(gl::lines(),m_edges);
              a_action.set_polygon_offset(true);
              a_action.color4f(state.m_color);
              a_action.line_width(state.m_line_width);
            }
            if(do_back.value()) a_action.draw_vertex_color_normal_array(mode.value(),m_back_xyzs,rgbas.values(),m_back_nms);
            a_action.draw_vertex_color_normal_array(mode.value(),xyzs.values(),rgbas.values(),nms.values());
            if(draw_edges.value()) a_action.set_polygon_offset(state.m_GL_POLYGON_OFFSET_FILL);
          } else {
            if(do_back.value()) a_action.draw_vertex_color_normal_array(mode.value(),m_back_xyzs,rgbas.values(),m_back_nms);
            a_action.draw_vertex_color_normal_array(mode.value(),xyzs.values(),rgbas.values(),nms.values());
          }
 
      } else {
          if(gl::is_line(mode.value())) {
            //Same logic as Inventor SoLightModel.model = BASE_COLOR.
            a_action.set_lighting(false);
            a_action.draw_vertex_color_array(mode.value(),xyzs.values(),rgbas.values());
            a_action.set_lighting(state.m_GL_LIGHTING);
          } else {
            a_action.draw_vertex_color_array(mode.value(),xyzs.values(),rgbas.values());
          }
      }
 
#ifdef __APPLE__
      if(restore_blend) a_action.set_blend(true);
#endif
    } else { //rgbas.empty()
      if(nms.size()) {
          if(gl::is_line(mode.value())) {
            //Same logic as Inventor SoLightModel.model = BASE_COLOR.
            a_action.set_lighting(false);
            a_action.draw_vertex_normal_array(mode.value(),xyzs.values(),nms.values());
            a_action.set_lighting(state.m_GL_LIGHTING);
          } else {
            a_action.draw_vertex_normal_array(mode.value(),xyzs.values(),nms.values());
          }
      } else {
          if(gl::is_line(mode.value())) {
            //Same logic as Inventor SoLightModel.model = BASE_COLOR.
            a_action.set_lighting(false);
            a_action.draw_vertex_array(mode.value(),xyzs.values());
            a_action.set_lighting(state.m_GL_LIGHTING);
          } else {
            a_action.draw_vertex_array(mode.value(),xyzs.values());
          }
      }
 
    }
 
  }
public:
  atb_vertices()
  :parent()
  ,do_back(false)
  ,epsilon(0)
  ,draw_edges(false)
  ,m_xyzs_pos(0)
  ,m_rgbas_pos(0)
  ,m_nms_pos(0)
#ifdef __APPLE__
  ,m_all_a_one(true)
#endif
  {
#ifdef TOOLS_MEM
    mem::increment(s_class().c_str());
#endif
    add_fields();
  }
  virtual ~atb_vertices(){
#ifdef TOOLS_MEM
    mem::decrement(s_class().c_str());
#endif
  }
public:
  atb_vertices(const atb_vertices& a_from)
  :parent(a_from)
  ,rgbas(a_from.rgbas)
  ,nms(a_from.nms)
  ,do_back(a_from.do_back)
  ,epsilon(a_from.epsilon)
  ,draw_edges(a_from.draw_edges)
  ,m_xyzs_pos(a_from.m_xyzs_pos)
  ,m_rgbas_pos(a_from.m_rgbas_pos)
  ,m_nms_pos(a_from.m_nms_pos)
#ifdef __APPLE__
  ,m_all_a_one(true)
#endif
  {
#ifdef TOOLS_MEM
    mem::increment(s_class().c_str());
#endif
    add_fields();
  }
  atb_vertices& operator=(const atb_vertices& a_from){
    parent::operator=(a_from);
    rgbas = a_from.rgbas;
    nms = a_from.nms;
    do_back = a_from.do_back;
    epsilon = a_from.epsilon;
    draw_edges = a_from.draw_edges;
    m_xyzs_pos = a_from.m_xyzs_pos;
    m_rgbas_pos = a_from.m_rgbas_pos;
    m_nms_pos = a_from.m_nms_pos;
    return *this;
  }
public:
  void add_pos_color(float a_x,float a_y,float a_z,float a_r,float a_g,float a_b,float a_a) {
    xyzs.add(a_x);
    xyzs.add(a_y);
    xyzs.add(a_z);
    rgbas.add(a_r);
    rgbas.add(a_g);
    rgbas.add(a_b);
    rgbas.add(a_a);
  }
 
  template <class COLOR>
  void add_pos_color(float a_x,float a_y,float a_z,const COLOR& a_col) {
    xyzs.add(a_x);
    xyzs.add(a_y);
    xyzs.add(a_z);
    rgbas.add(a_col.r());
    rgbas.add(a_col.g());
    rgbas.add(a_col.b());
    rgbas.add(a_col.a());
  }
 
  template <class VEC,class COLOR>
  void add_pos_color(const VEC& a_pos,const COLOR& a_col) {
    xyzs.add(a_pos.x());
    xyzs.add(a_pos.y());
    xyzs.add(a_pos.z());
    rgbas.add(a_col.r());
    rgbas.add(a_col.g());
    rgbas.add(a_col.b());
    rgbas.add(a_col.a());
  }
 
  void allocate_pos_color(size_t a_npt) {
    xyzs.values().resize(a_npt*3);
    rgbas.values().resize(a_npt*4);
    m_xyzs_pos = 0;
    m_rgbas_pos = 0;
  }
 
  template <class VEC,class COLOR>
  void add_pos_color_allocated(const VEC& a_pos,const COLOR& a_col) {
   {std::vector<float>& v = xyzs.values();
    v[m_xyzs_pos] = a_pos.x();m_xyzs_pos++;
    v[m_xyzs_pos] = a_pos.y();m_xyzs_pos++;
    v[m_xyzs_pos] = a_pos.z();m_xyzs_pos++;
    xyzs.touch();}
   {std::vector<float>& v = rgbas.values();
    v[m_rgbas_pos] = a_col.r();m_rgbas_pos++;
    v[m_rgbas_pos] = a_col.g();m_rgbas_pos++;
    v[m_rgbas_pos] = a_col.b();m_rgbas_pos++;
    v[m_rgbas_pos] = a_col.a();m_rgbas_pos++;
    rgbas.touch();}
  }
 
  template <class VEC,class COLOR>
  void add_pos_color_normal(const VEC& a_pos,const COLOR& a_col,const VEC& a_nm) {
    xyzs.add(a_pos.x());
    xyzs.add(a_pos.y());
    xyzs.add(a_pos.z());
    rgbas.add(a_col.r());
    rgbas.add(a_col.g());
    rgbas.add(a_col.b());
    rgbas.add(a_col.a());
    nms.add(a_nm.x());
    nms.add(a_nm.y());
    nms.add(a_nm.z());
  }
 
  void allocate_pos_color_normal(size_t a_npt) {
    xyzs.values().resize(a_npt*3);
    rgbas.values().resize(a_npt*4);
    nms.values().resize(a_npt*3);
    m_xyzs_pos = 0;
    m_rgbas_pos = 0;
    m_nms_pos = 0;
  }
 
  template <class VEC,class COLOR>
  void add_pos_color_normal_allocated(const VEC& a_pos,const COLOR& a_col,const VEC& a_nm) {
   {std::vector<float>& v = xyzs.values();
    v[m_xyzs_pos] = a_pos.x();m_xyzs_pos++;
    v[m_xyzs_pos] = a_pos.y();m_xyzs_pos++;
    v[m_xyzs_pos] = a_pos.z();m_xyzs_pos++;
    xyzs.touch();}
   {std::vector<float>& v = rgbas.values();
    v[m_rgbas_pos] = a_col.r();m_rgbas_pos++;
    v[m_rgbas_pos] = a_col.g();m_rgbas_pos++;
    v[m_rgbas_pos] = a_col.b();m_rgbas_pos++;
    v[m_rgbas_pos] = a_col.a();m_rgbas_pos++;
    rgbas.touch();}
   {std::vector<float>& v = nms.values();
    v[m_nms_pos] = a_nm.x();m_nms_pos++;
    v[m_nms_pos] = a_nm.y();m_nms_pos++;
    v[m_nms_pos] = a_nm.z();m_nms_pos++;
    nms.touch();}
  }
 
  void add_rgba(float a_r,float a_g,float a_b,float a_a) {
    rgbas.add(a_r);
    rgbas.add(a_g);
    rgbas.add(a_b);
    rgbas.add(a_a);
  }
  void add_color(const colorf& a_col) {
    rgbas.add(a_col.r());
    rgbas.add(a_col.g());
    rgbas.add(a_col.b());
    rgbas.add(a_col.a());
  }
 
  void add_normal(float a_x,float a_y,float a_z) {
    nms.add(a_x);
    nms.add(a_y);
    nms.add(a_z);
  }
  template <class VEC>
  void add_normal(const VEC& a_nm) {
    nms.add(a_nm.x());
    nms.add(a_nm.y());
    nms.add(a_nm.z());
  }
 
  void add_rgba_allocated(size_t& a_pos,float a_r,float a_g,float a_b,float a_a) {
    std::vector<float>& v = rgbas.values();
    v[a_pos] = a_r;a_pos++;
    v[a_pos] = a_g;a_pos++;
    v[a_pos] = a_b;a_pos++;
    v[a_pos] = a_a;a_pos++;
    rgbas.touch();
  }
  void add_normal_allocated(size_t& a_pos,float a_x,float a_y,float a_z) {
    std::vector<float>& v = nms.values();
    v[a_pos] = a_x;a_pos++;
    v[a_pos] = a_y;a_pos++;
    v[a_pos] = a_z;a_pos++;
    nms.touch();
  }
 
  template <class VEC>
  void add_pos_normal(const VEC& a_pos,const VEC& a_nm) {
    xyzs.add(a_pos.x());
    xyzs.add(a_pos.y());
    xyzs.add(a_pos.z());
    nms.add(a_nm.x());
    nms.add(a_nm.y());
    nms.add(a_nm.z());
  }
 
  bool add_dashed_line_rgba(float a_bx,float a_by,float a_bz,
                            float a_ex,float a_ey,float a_ez,
                            unsigned int a_num_dash,
                            float a_r,float a_g,float a_b,float a_a) {
    if(!parent::add_dashed_line(a_bx,a_by,a_bz,a_ex,a_ey,a_ez,a_num_dash)) return false;
    for(unsigned int index=0;index<a_num_dash;index++) {
      add_rgba(a_r,a_g,a_b,a_a);
      add_rgba(a_r,a_g,a_b,a_a);
    }
    return true;
  }
 
  void clear() {
    rgbas.clear();
    nms.clear();
    parent::clear();
  }
protected:
  void gen_back(){
    m_back_xyzs.clear();
    m_back_nms.clear();
 
    clean_gstos(); //must reset for all render_manager.
 
    std::vector<float>& _xyzs = xyzs.values();
    std::vector<float>& _nms = nms.values();
 
    if(_xyzs.empty()) return;
 
    m_back_xyzs.resize(_xyzs.size(),0);
    m_back_nms.resize(_nms.size(),0);
 
    float epsil = epsilon.value();
 
    if(mode.value()==gl::triangle_fan()) { //reverse after first point.
 
      m_back_xyzs[0] = _xyzs[0] - _nms[0] * epsil;
      m_back_xyzs[1] = _xyzs[1] - _nms[1] * epsil;
      m_back_xyzs[2] = _xyzs[2] - _nms[2] * epsil;
 
     {std::vector<float>::const_iterator it = _xyzs.begin()+3;
      std::vector<float>::const_iterator _end = _xyzs.end();
      std::vector<float>::const_iterator itn = _nms.begin()+3;
      std::vector<float>::reverse_iterator it2 = m_back_xyzs.rbegin();
      for(;it!=_end;it2+=3) {
        *(it2+2) = *it - *itn * epsil; it++;itn++; //x
        *(it2+1) = *it - *itn * epsil; it++;itn++; //y
        *(it2+0) = *it - *itn * epsil; it++;itn++; //z
      }}
 
      m_back_nms[0] = _nms[0] * -1.0f;
      m_back_nms[1] = _nms[1] * -1.0f;
      m_back_nms[2] = _nms[2] * -1.0f;
 
     {std::vector<float>::const_iterator it = _nms.begin()+3;
      std::vector<float>::const_iterator _end = _nms.end();
      std::vector<float>::reverse_iterator it2 = m_back_nms.rbegin();
      for(;it!=_end;it2+=3) {
        *(it2+2) = *it * -1.0f; it++;
        *(it2+1) = *it * -1.0f; it++;
        *(it2+0) = *it * -1.0f; it++;
      }}
 
    } else {
 
     {std::vector<float>::const_iterator it = _xyzs.begin();
      std::vector<float>::const_iterator _end = _xyzs.end();
      std::vector<float>::const_iterator itn = _nms.begin();
      std::vector<float>::reverse_iterator it2 = m_back_xyzs.rbegin();
      for(;it!=_end;it2+=3) {
        *(it2+2) = *it - *itn * epsil; it++;itn++; //x
        *(it2+1) = *it - *itn * epsil; it++;itn++; //y
        *(it2+0) = *it - *itn * epsil; it++;itn++; //z
      }}
 
     {std::vector<float>::const_iterator it = _nms.begin();
      std::vector<float>::const_iterator _end = _nms.end();
      std::vector<float>::reverse_iterator it2 = m_back_nms.rbegin();
      for(;it!=_end;it2+=3) {
        *(it2+2) = *it * -1.0f; it++;
        *(it2+1) = *it * -1.0f; it++;
        *(it2+0) = *it * -1.0f; it++;
      }}
 
    }
  }
 
  void gen_edges(){
    m_edges.clear();
 
    clean_gstos(); //must reset for all render_manager.
 
    std::vector<float>& _xyzs = xyzs.values();
    if(_xyzs.empty()) return;
 
    m_edges.resize(2*_xyzs.size(),0);
 
    float* pxyz = vec_data<float>(xyzs.values());
    float* pedges = vec_data<float>(m_edges);
 
    size_t npt = xyzs.values().size()/3;
    size_t ntri = npt/3;
    for(size_t itri=0;itri<ntri;itri++) {
      // first edge :
      *pedges = *(pxyz+0);pedges++;
      *pedges = *(pxyz+1);pedges++;
      *pedges = *(pxyz+2);pedges++;
 
      *pedges = *(pxyz+3);pedges++;
      *pedges = *(pxyz+4);pedges++;
      *pedges = *(pxyz+5);pedges++;
 
      // second edge :
      *pedges = *(pxyz+3);pedges++;
      *pedges = *(pxyz+4);pedges++;
      *pedges = *(pxyz+5);pedges++;
 
      *pedges = *(pxyz+6);pedges++;
      *pedges = *(pxyz+7);pedges++;
      *pedges = *(pxyz+8);pedges++;
 
      // third edge :
      *pedges = *(pxyz+6);pedges++;
      *pedges = *(pxyz+7);pedges++;
      *pedges = *(pxyz+8);pedges++;
 
      *pedges = *(pxyz+0);pedges++;
      *pedges = *(pxyz+1);pedges++;
      *pedges = *(pxyz+2);pedges++;
 
      pxyz += 9;
    }
  }
#ifdef __APPLE__
protected:
  // macOS/Mojave : on this version, points are blended even if alpha is one !
  bool check_set_blend(render_action& a_action) {
    bool restore_blend = false;
    const state& state = a_action.state();
    if(state.m_GL_BLEND) {
    /*
      bool all_a_one = true;
      tools_vforcit_npp(float,rgbas.values(),it) {
        if(*(it+3)!=1) {all_a_one = false;break;}
        it += 4;
      }
      if(all_a_one) {
        a_action.set_blend(false);
        restore_blend = true;
      }
      */
      if(m_all_a_one) {
        a_action.set_blend(false);
        restore_blend = true;
      }
    }
    return restore_blend;
  }
#endif
protected:
  std::vector<float> m_back_xyzs;
  std::vector<float> m_back_nms;
  std::vector<float> m_edges;
protected:
  size_t m_xyzs_pos;
  size_t m_rgbas_pos;
  size_t m_nms_pos;
#ifdef __APPLE__
  bool m_all_a_one;
#endif
};
 
}}
 
#endif