#include <algorithm>

using namespace std;

#include "entity.h"
#include "oct.h"
#include "view.h"

void entity_base::update_bbox ()
{
  if (parent)
    parent->update_bbox ();
}

void entity_base::hide ()
{
  for (vector<octant *>::iterator i = o.end (); i-- != o.begin (); )
    (*i)->remove (this);

  o.clear ();
}

void entity_filter::update_bbox ()
{
  bbox = e->bbox;
  entity_base::update_bbox ();
}

void entity_filter::show (const sector &sec)
{
  world.add (sec, this);

  e->show (sec);
}

void entity_filter::draw (draw_context &ctx)
{
  e->try_draw (ctx);
}

entity_filter::~entity_filter ()
{
  delete e;
}

void entity::show (const sector &sec)
{
  show ();
}

void entity::show ()
{
  e->show (this->sec);
}

void entity::draw (draw_context &ctx)
{
  glPushMatrix ();
  glTranslated (-sec.x, -sec.y, -sec.z);
  e->try_draw (ctx);
  glPopMatrix ();
}

void entity_container::update_bbox ()
{
  bbox.reset ();

  for (iterator i = end (); i-- != begin (); )
    {
      (*i)->update_bbox ();
      bbox.add ((*i)->bbox);
    }
}

void entity_container::show (const sector &sec)
{
  world.add (sec, this);

  for (iterator i = end (); i-- != begin (); )
    (*i)->show (sec);
}

void entity_container::draw (draw_context &ctx)
{
  for (iterator i = end (); i-- != begin (); )
    (*i)->try_draw (ctx);
}

entity_container::~entity_container ()
{
  hide ();

  for (iterator i = end (); i-- != begin (); )
    delete *i;
 
  clear ();
}

template class entity_opengl1d<GL_POINTS>;
template class entity_opengl1d<GL_LINES>;
template class entity_opengl1d<GL_LINE_STRIP>;
template class entity_opengl1d<GL_LINE_LOOP>;
template class entity_opengl2d<GL_TRIANGLES>;
template class entity_opengl2d<GL_TRIANGLE_STRIP>;
template class entity_opengl2d<GL_TRIANGLE_FAN>;
template class entity_opengl2d<GL_QUADS>;
template class entity_opengl2d<GL_QUAD_STRIP>;
template class entity_opengl2d<GL_POLYGON>;

template<GLenum type>
void entity_opengl1d<type>::update_bbox ()
{
  bbox.reset ();

  for (vector<vertex1d>::iterator i = end (); i-- != begin (); )
    bbox.add (i->p);

  entity_base::update_bbox ();
}

template<GLenum type>
void entity_opengl2d<type>::update_bbox ()
{
  for (vector<vertex2d>::iterator i = end (); i-- != begin (); )
    bbox.add (i->p);

  entity_base::update_bbox ();
}

template<GLenum type>
void entity_opengl1d<type>::draw (draw_context &ctx)
{
  glBegin (type);

  for (iterator i = begin (); i < end (); ++i)
    {
      if (ctx.mode == draw_context::LIGHTED)
        glColor3fv ((GLfloat *)&i->c);

      glVertex3fv ((GLfloat *)&i->p);
    }

  glEnd ();
}

template<GLenum type>
void entity_opengl2d<type>::draw (draw_context &ctx)
{
  if (!list)
    {
      if (0) list = glGenLists (1);
      if (0) glNewList (list, GL_COMPILE);

      glMaterialfv (GL_FRONT, GL_DIFFUSE,  (GLfloat *)&m.diffuse);
      glMaterialfv (GL_FRONT, GL_SPECULAR, (GLfloat *)&m.specular);
      glMaterialfv (GL_FRONT, GL_EMISSION, (GLfloat *)&m.emission);
      glMaterialf  (GL_FRONT, GL_SHININESS, m.shininess);

      glBegin (type);
         
      for (iterator i = begin (); i < end (); ++i)
        {
          glTexCoord2fv ((GLfloat *)&i->t);
          glNormal3fv ((GLfloat *)&i->n);
          glVertex3fv ((GLfloat *)&i->p);
        }

      glEnd ();
      if (0) glEndList ();
    }

  if (0) glCallList (list);
}

template<GLenum type>
void entity_opengl1d<type>::show (const sector &sec)
{
  world.add (sec, this);
}

template<GLenum type>
void entity_opengl2d<type>::show (const sector &sec)
{
  world.add (sec, this);
}