source: trunk/MagicSoft/Simulation/Detector/Starfield/starfield.h@ 6697

Last change on this file since 6697 was 5110, checked in by moralejo, 20 years ago
Commited to CVS all changes to adapt headers to current C++ syntaxis
File size: 1.5 KB
Line 
1// Include header files
2
3#ifndef _STARFIELD_H_
4#define _STARFIELD_H_
5
6#include <iostream>
7#include <fstream>
8#include <stdlib.h>
9#include <stdio.h>
10#include <math.h>
11#include <sys/types.h>
12#include <dirent.h>
13#include <unistd.h>
14
15// Include header files from the project.
16
17#include "convertcorsika.h"
18
19//#include "rand_time.h"
20
21//#include "rand_coord.h"
22
23#include "star.hxx"
24
25#include "photon.hxx"
26
27#include "jcmacros.h"
28
29#include "parameters.h"
30
31// Global constants.
32
33
34// Maximum number of stars and maximum number of photons for
35// memory allocation
36
37
38#ifndef iMAXSTARS
39#define iMAXSTARS 5000
40#endif
41
42#ifndef iMAXPHOT
43#define iMAXPHOT 250000
44#endif
45
46#ifndef PI
47#define PI 3.1415927
48#endif
49
50
51//Seed for the random generators.
52
53long int idum=-1;
54
55
56//Function definitions
57
58
59//Random generator functions.
60
61float rand_un_gen(long *idum);
62
63
64
65inline float rand_coord(float radius){
66// generate a coordinate on the floor for every photon arriving from the star.
67
68 float p_m;
69 float randc;
70
71 randc=rand_un_gen(&idum);
72
73 p_m= 2.0*radius * randc - radius;
74
75 return (p_m);
76}
77
78// generate for every photon a random arrival time within a time window
79// defined by the intgreation time.
80
81inline float rand_time(float inttime_s){
82
83 float randt;
84
85 randt= inttime_s * rand_un_gen(&idum);
86
87 return(randt);
88}
89
90// The rand_lambda function will generate for every photon a random wavelength
91// in the given waveband
92
93inline float rand_lambda(float lmin, float lmax){
94
95 float randt;
96
97 randt=(lmax - lmin) * rand_un_gen(&idum) + lmin ;
98
99 return(randt);
100}
101
102
103#endif
104
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