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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