/// <summary>
///
/// </summary>
/// <param name="files"></param>
/// <param name="previousFile"></param>
/// <param name="snap"></param>
/// <returns></returns>
GroupTabFile NextGroupTabFile(GroupTabFile previousFile, short snap)
{
int ifile = (previousFile == null?0: previousFile.ifile+1);
GroupTabFile groupFile = new GroupTabFile(GetGroupTab(inPath, snap, ifile), previousFile);
return groupFile;
}
//string filename, bool _hasVelDisp, short snapnum, float redshift)
/// <summary>
///
/// </summary>
/// <param name="_process"></param>
/// <param name="filename"></param>
/// <param name="_snapnum"></param>
/// <param name="_ifile"></param>
public GroupTabFile(string filename, GroupTabFile previous)
{
this.ifile = (previous == null ? 0 : previous.ifile + 1);
// no need for records/bytesRead, not in fortran format
using (BinaryReader reader = new BinaryReader(new FileStream(filename, FileMode.Open)))
{
numGroups = reader.ReadInt32();
totalGroups = reader.ReadInt32();
numIDs = reader.ReadInt32();
totalIDs = reader.ReadInt64();
numFiles = reader.ReadInt32();
previousLastGroupIndex = (previous == null ? -1 : previous.lastGroupIndex);
groups = new GroupTabInfo[numGroups];
for (int i = 0; i < numGroups; i++)
groups[i] = new GroupTabInfo();
// Len+offset+Mass
reader.ReadBytes(4*3*numGroups);
for (int i = 0; i < numGroups; i++)
{
groups[i].cmx = reader.ReadSingle();
groups[i].cmy = reader.ReadSingle();
groups[i].cmz = reader.ReadSingle();
}
for (int i = 0; i < numGroups; i++)
{
groups[i].cvx = reader.ReadSingle();
groups[i].cvy = reader.ReadSingle();
groups[i].cvz = reader.ReadSingle();
}
}
}
