// Copyright (C) 2010, Guy Barrand. All rights reserved.
// See the file tools.license for terms.

#ifndef tools_sg_line_set
#define tools_sg_line_set

#include "node"

#include "mf"
#include "../stype"
#include "render_action"
#include "pick_action"

namespace tools {
namespace sg {

class line_set : public node {
  TOOLS_NODE(line_set,tools::sg::line_set,node)
public:
  mf_std_vec<float> lines;
public:
  virtual const std::vector<field_desc>& node_fields() const {
    TOOLS_FIELD_DESC_NODE_CLASS(tools::sg::line_set)
    static std::vector<field_desc> s_v;
    if(s_v.empty()) {
      s_v = parent::node_fields();
      TOOLS_ADD_FIELD_DESC(lines)
    }
    return s_v;
  }
private:
  void add_fields(){
    add_field(&lines);
  }
public:
  typedef std::vector<float> line_t;

  virtual void render(render_action& a_action) {
    tools_vforcit(line_t,lines.values(),it) {
      a_action.draw_vertex_array(gl::line_strip(),*it);
    }
  }

  virtual void pick(pick_action& a_action) {
    tools_vforcit(line_t,lines.values(),it) {
      a_action.add_line_strip(*it,true);
      if(a_action.done()) {
        a_action.set_node(this);
        return;
      }
    }

  }

public:
  line_set()
  :parent() 
  ,lines()
  {
#ifdef TOOLS_MEM
    mem::increment(s_class().c_str());
#endif
    add_fields();
  }
  virtual ~line_set(){
#ifdef TOOLS_MEM
    mem::decrement(s_class().c_str());
#endif
  }
public:
  line_set(const line_set& a_from)
  :parent(a_from)
  ,lines(a_from.lines)
  {
#ifdef TOOLS_MEM
    mem::increment(s_class().c_str());
#endif
    add_fields();
  }
  line_set& operator=(const line_set& a_from){
    parent::operator=(a_from);
    lines = a_from.lines;
    return *this;
  }
public:
  bool add(const line_t& a_line) { 
    size_t npoint = a_line.size()/3;
    if(npoint*3!=a_line.size()) return false;
    lines.add(a_line);
    return true;
  }
  void clear() {lines.clear();}
};

}}

#endif