#include "libs.h"
#include "star.h"
#include "l3d.h"

Star::Star(StarSystem::SBody::SubType subtype): Body() {
  m_subtype = subtype;
  m_radius  = 6378135.0;
  m_pos     = vector3d(0,0,0);
}

vector3d Star::GetPosition(void) {
  return m_pos;
}

void Star::SetPosition(vector3d p) {
  m_pos = p;
}

void Star::TransformToModelCoords(const Frame* camFrame) {
  vector3d fpos = GetPositionRelTo(camFrame);
  glTranslatef(m_pos[0]+fpos.x, m_pos[1]+fpos.y, m_pos[2]+fpos.z);
}

void Star::Render(const Frame* a_camFrame) {
  glDisable(GL_LIGHTING);
  glDisable(GL_DEPTH_TEST);
  glPushMatrix();

  /* TODO duplicates code from Planet.cpp, not good. */
  double rad = m_radius;
  vector3d fpos = GetPositionRelTo(a_camFrame);
  double len = fpos.Length();

  while(len > 1000.0f) {
    rad *= 0.25;
    fpos = 0.25*fpos;
    len *= 0.25;
  }
  
  glTranslatef(fpos.x, fpos.y, fpos.z);
  
  //TransformToModelCoords(a_camFrame);
  glColor3fv(StarSystem::starColors[m_subtype]);
  gluSphere(L3D::gluQuadric, rad, 100, 100);
  glPopMatrix();
  glEnable(GL_DEPTH_TEST);
  glEnable(GL_LIGHTING);
}