qt/mkspdata/main.cpp

   1 #include <cstdlib>    // For ``EXIT_FAILURE'' constant
   2 #include <iostream>
   3 #include <QDataStream>
   4 #include <QFile>
   5 #include <math.h>
   6
   7 #define MAGIC_NUMBER  0xA0B0C0D0
   8 #define PROT_VERSION  0x1
   9
  10 #define TIME_STEP     1.0f
  11 #define START_TIME    0.0f
  12 #define END_TIME   50.0f
  13 #define NUM_REPLAYS 100
  14 #define DURATION 10000    // msec
  15
  16 int main(int argc, char *argv[])
  17 {
  18     QFile file;
  19     float x, y, z, xR, yR, zR, t;
  20     quint32 i, duration, magicNumber, protVersion, numRecords;
  21
  22     file.setFileName(argv[1]);
  23
  24     // Open file for writing
  25     file.open(QIODevice::WriteOnly);
  26     QDataStream out(&file);
  27
  28     // Write a header with a "magic number" and a protocol version
  29     out << (quint32) MAGIC_NUMBER;
  30     out << (quint32) PROT_VERSION;
  31     out << (quint32) DURATION;    // msec
  32     out << (quint32) (NUM_REPLAYS * (END_TIME - START_TIME) / TIME_STEP);
  33
  34     // Write actual data
  35     for (i = 0; i < NUM_REPLAYS; i++) {
  36         for (t = START_TIME; t < END_TIME; t += TIME_STEP) {
  37             out << (float) (5.0 * t * t)    << 0.0f << 0.0f
  38                 << (float) (cos(t) * 180.0) << 0.0f << 0.0f;
  39         }
  40     }
  41     file.close();
  42
  43     // Open file for reading
  44     file.open(QIODevice::ReadOnly);
  45     QDataStream in(&file);
  46
  47     // Read "magic number" and protocol version
  48     in >> magicNumber;
  49     if (magicNumber != 0xA0B0C0D0) {
  50         std::cout << "Magic number mismatch\n";
  51         exit(EXIT_FAILURE);
  52     }
  53
  54     in >> protVersion;
  55     if (protVersion != PROT_VERSION) {
  56         std::cout << "Protocol version mismatch\n";
  57         exit(EXIT_FAILURE);
  58     }
  59
  60     in >> duration;
  61     in >> numRecords;
  62
  63     std::cout << "Magic number = 0x" << std::hex << magicNumber << "\n";
  64     std::cout << "Protocol version = 0x" << protVersion << "\n";
  65     std::cout << "Duration in msec = " << std::dec << duration << "\n";
  66     std::cout << "Number of records = " << numRecords << "\n";
  67
  68     // Read data
  69     while (!in.atEnd()) {
  70         in >> x >> y >> z >> xR >> yR >> zR;
  71         std::cout << "x = "    << x
  72                   << "\ty = "  << y
  73                   << "\tz = "  << z
  74                   << "\txR = " << xR
  75                   << "\tyR = " << yR
  76                   << "\tzR = " << zR << "\n";
  77     }
  78     file.close();
  79
  80     return EXIT_SUCCESS;
  81 }