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Starfield.h
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Starfield.h
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//==============================================================================
//
// File: Starfield.h
//
// Purpose: Draw a background starfield.
//
// Modified: 04/07/2009 Allen Smith. Creation Date.
//
//==============================================================================
#ifndef _Starfield_
#define _Starfield_
#include <vector>
#include "StandardElements.h"
////////////////////////////////////////////////////////////////////////////////
//
// struct Star
//
////////////////////////////////////////////////////////////////////////////////
struct Star
{
Coordinate location;
float whiteness; // [0.0 - 1.0]; grayscale value
float size; // [0.25 - 1.0]; point diameter
};
////////////////////////////////////////////////////////////////////////////////
//
// class Starfield
//
////////////////////////////////////////////////////////////////////////////////
class Starfield
{
public:
Starfield();
virtual ~Starfield();
virtual void SetStarCount(unsigned starCount);
virtual void Draw();
protected:
virtual void GenerateRandomStarfield();
virtual void OptimizeDrawing();
virtual void DestroyDisplayList();
private:
GLuint displayListTag;
unsigned starCount;
std::vector<Star> stars;
};
#endif