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  1.  
  2. #include <stdio.h>
  3. #include <vector>
  4. using namespace std;
  5. struct Space2
  6. {
  7.     struct Vector
  8.     {
  9.  
  10.     };
  11.  
  12. };
  13. struct Space3
  14. {
  15.     struct Vector
  16.     {
  17.  
  18.     };
  19.  
  20. };
  21.  
  22. template<typename Space,int COUNT>
  23. struct ParticleSystem
  24. {
  25.   struct ParticleData;
  26.   typedef typename ParticleSystem<Space,0>::ParticleData Particle; 
  27.     void DumpParticle();
  28.     std::vector<Particle> particles;
  29.     ParticleSystem()
  30.     {
  31.         particles.push_back(Particle());
  32.     }
  33. };
  34.  
  35. template<> struct ParticleSystem<Space2,0>::ParticleData
  36. {
  37.     float orientation;
  38.     float invInertia;
  39.     ParticleData()
  40.     {
  41.         orientation = 2.0f ;
  42.         invInertia = 3.0f;
  43.     }
  44. };
  45.  
  46.  
  47. template<> struct ParticleSystem<Space3,0>::ParticleData
  48. {
  49.     float test;
  50.     ParticleData()
  51.     {
  52.         test = 100500.0f;
  53.     }
  54. };
  55.  
  56. template<>
  57. void ParticleSystem<Space2,0>::DumpParticle()
  58. {
  59.     printf("2: %f %f\n", particles[0].orientation, particles[0].invInertia );
  60. }
  61.  
  62. template<>
  63. void ParticleSystem<Space3,3>::DumpParticle()
  64. {
  65.     printf("3: %f\n", particles[0].test);
  66. }
  67. int main()
  68. {
  69.     ParticleSystem<Space3,3> p3;
  70.     ParticleSystem<Space2,0> p2;
  71.     p3.DumpParticle();
  72.     p2.DumpParticle();
  73.     return 0;
  74. }
  75.  
Success #stdin #stdout 0s 3472KB
comments (?)
stdin 
Standard input is empty
stdout 
3: 100500.000000
2: 2.000000 3.000000
https://ideone.com/bvG8XD
language:
C++ (gcc 8.3)
created:
11 years ago
visibility:
public

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