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STARS.CPP
Package: openglsystem.rar　[view]
Upload User: nthssl
Upload Date: 2022-04-05
Package Size: 25357k
Code Size: 1k
Category:

OpenCV

Development Platform:

Visual C++

STARS.CPP：Code Content
  1. // Stars.cpp: implementation of the CStars class.
  2. //
  3. //////////////////////////////////////////////////////////////////////
  5. #include "stdafx.h"
  6. #include "MyGame.h"
  7. #include "Stars.h"
  9. #ifdef _DEBUG
  10. #undef THIS_FILE
  11. static char THIS_FILE[]=__FILE__;
  12. #define new DEBUG_NEW
  13. #endif
  14. #ifndef M_PI
  15. #define M_PI 3.14159265358979323846
  16. #endif
  17. //////////////////////////////////////////////////////////////////////
  18. // Construction/Destruction
  19. //////////////////////////////////////////////////////////////////////
  21. CStars::~CStars()
  22. {
  24. }
  25. CStars::CStars(int starn)
  26. {
  27. cc=0;
  28. S.resize(starn);
  29. C.resize(starn+10);
  30. for(int i=0;i<starn;++i)
  31. {
  32. S[i].v[0]=(drand48()-.5);
  33. S[i].v[1]=(drand48()-.5);
  34. S[i].v[2]=0;
  35. }
  36. float basecolor;
  37. for(i=0;i<starn+10;++i)
  38. {
  39. if(i%10) basecolor=drand48();
  40. C[i].v[0]=C[i].v[1]=C[i].v[2]=basecolor+sin((i%10)*M_PI/10.0);
  41. }
  42. }
  44. int CStars::Draw()
  45. {
  46. glDisable(GL_LIGHTING);
  47. glColor3f(1.0,1.0,1.0);
  48. glEnableClientState (GL_VERTEX_ARRAY);
  49. glEnableClientState (GL_COLOR_ARRAY);
  50. glVertexPointer(3,GL_FLOAT,0,S.begin());
  51. glColorPointer(3,GL_FLOAT,0,&(C[cc]));
  52. glDrawArrays(GL_POINTS,0,S.size());
  53. glDisableClientState (GL_VERTEX_ARRAY);
  54. glDisableClientState (GL_COLOR_ARRAY);
  55. glEnable(GL_LIGHTING);
  56. return S.size();
  57. };