entry.c

   1 #include <stdio.h>
   2 #include <stdlib.h>
   3 #include <string.h>
   4
   5 #include "tmalloc.h"
   6 #include "galaxy.h"
   7 #include "xgalaxy.h"
   8
   9
  10 void
  11 freeStarEntry() {
  12         if ( XGalaxy.entry )
  13                 tfree(XGalaxy.entry);
  14         XGalaxy.entry=NULL;
  15         if ( XGalaxy.tmpentry )
  16                 tfree(XGalaxy.tmpentry);
  17         XGalaxy.tmpentry=NULL;
  18         XGalaxy.nentry = XGalaxy.lenentry = 0;
  19 }
  20
  21 void
  22 addEntry(Star *star) {
  23         if ( XGalaxy.nentry >= XGalaxy.lenentry ) {
  24                 XGalaxy.lenentry = (XGalaxy.lenentry) ? XGalaxy.lenentry*2 : 16;
  25                 XGalaxy.entry = (Star*) ((XGalaxy.entry) ?
  26                         trealloc(XGalaxy.entry, sizeof(Star)*XGalaxy.lenentry)
  27                         :
  28                         tmalloc(sizeof(Star)*XGalaxy.lenentry));
  29                 XGalaxy.tmpentry = (Star*) ((XGalaxy.entry) ?
  30                         trealloc(XGalaxy.tmpentry, sizeof(Star)*XGalaxy.lenentry)
  31                         :
  32                         tmalloc(sizeof(Star)*XGalaxy.lenentry));
  33         }
  34
  35         if ( star )
  36                 memcpy(XGalaxy.entry + XGalaxy.nentry, star, sizeof(Star));
  37         else
  38                 memset(XGalaxy.entry + XGalaxy.nentry, 0, sizeof(Star));
  39
  40         XGalaxy.nentry++;
  41 }
  42
  43 void
  44 deleteEntry(u_int32_t i) {
  45         if ( i>=XGalaxy.nentry || XGalaxy.nentry==0)
  46                 return;
  47
  48         if ( i!=XGalaxy.nentry-1)
  49                 memmove( XGalaxy.entry + i, XGalaxy.entry + i + 1, sizeof(Star) * ( XGalaxy.nentry-i-1) );
  50         XGalaxy.nentry--;
  51 }
  52
  53 void
  54 editEntry(u_int32_t i, int col, double val) {
  55         if ( i>=XGalaxy.nentry )
  56                 return;
  57         switch(col) {
  58                 case 1:  XGalaxy.entry[i].mass = val; break;
  59                 case 2:  XGalaxy.entry[i].c.x = val; break;
  60                 case 3:  XGalaxy.entry[i].c.y = val; break;
  61                 case 4:  XGalaxy.entry[i].c.z = val; break;
  62                 case 5:  XGalaxy.entry[i].v.x = val; break;
  63                 case 6:  XGalaxy.entry[i].v.y = val; break;
  64                 case 7:  XGalaxy.entry[i].v.z = val; break;
  65                 default: break;
  66         }
  67 }
  68
  69 void
  70 cntEntry() {
  71         Galaxy galaxy;
  72         char buf[128];
  73
  74         memset(&galaxy,0,sizeof(galaxy));
  75
  76         galaxy.stars = XGalaxy.entry;
  77         galaxy.nstars = XGalaxy.nentry;
  78
  79         EnergyImpulseGalaxy(&galaxy);
  80
  81         sprintf(buf,"%G",galaxy.kineticEnergy + galaxy.potentialEnergy);
  82         gtk_label_set_text( GTK_LABEL(XGalaxy.dataEnergyField), buf);
  83
  84         sprintf(buf,"%G",galaxy.Impulse);
  85         gtk_label_set_text( GTK_LABEL(XGalaxy.dataImpulseField), buf);
  86
  87         sprintf(buf,"%G",galaxy.Moment);
  88         gtk_label_set_text( GTK_LABEL(XGalaxy.dataMomentField), buf);
  89 }