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/*  Project Starshatter 4.5
    Destroyer Studios LLC
    Copyright © 1997-2004. All Rights Reserved.

    SUBSYSTEM:    Stars.exe
    FILE:         Sky.h
    AUTHOR:       John DiCamillo


    OVERVIEW
    ========
    Celestial sphere, stars, planets, space dust...
*/

#ifndef Sky_h
#define Sky_h

#include "Types.h"
#include "Solid.h"
#include "Bitmap.h"
#include "Geometry.h"

// +--------------------------------------------------------------------+

class StarSystem;

// +--------------------------------------------------------------------+

class Stars : public Graphic
{
public:
   Stars(int nstars);
   virtual ~Stars();

   virtual void      Illuminate(double scale);
   virtual void      Render(Video* video, DWORD flags);

protected:
   VertexSet*        vset;
   Color*            colors;
};

// +--------------------------------------------------------------------+

class Dust : public Graphic
{
public:
   Dust(int ndust, bool bright=false);
   virtual ~Dust();
   
   virtual void      Render(Video* video, DWORD flags);
   virtual void      Reset(const Point& ref);
   virtual void      ExecFrame(double factor, const Point& ref);

   virtual void      Hide();
   virtual void      Show();

protected:
   bool              really_hidden;
   bool              bright;
   VertexSet*        vset;
};

// +--------------------------------------------------------------------+

class PlanetRep : public Solid
{
public:
   PlanetRep(const char* img_west, const char* img_glow, 
          double rad, const Vec3& pos, double tscale = 1,
          const char* rngname=0, double minrad = 0, double maxrad = 0,
          Color atmos = Color::Black, const char* img_gloss=0);
   virtual ~PlanetRep();

   virtual Color     Atmosphere()  const    { return atmosphere; }
   virtual void      SetAtmosphere(Color a) { atmosphere = a; }
   virtual void      SetDaytime(bool d);
   virtual void      SetStarSystem(StarSystem* system);

   virtual void      Render(Video* video, DWORD flags);

   virtual int       CheckRayIntersection(Point pt, Point vpn, double len, Point& ipt,
                        bool treat_translucent_polys_as_solid=true);

protected:
   void  CreateSphere(double radius, int nrings, int nsections,
                      double minrad, double maxrad, int rsections,
                      double tscale);

   Material*         mtl_surf;
   Material*         mtl_limb;
   Material*         mtl_ring;
   int               has_ring;
   int               ring_verts;
   int               ring_polys;
   double            ring_rad;
   double            body_rad;
   Color             atmosphere;
   bool              daytime;

   StarSystem*       star_system;
};

#endif Sky_h