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 int main(int argc, char *argv[])
   8 {
   9     QFile file;
  10     float x, y, z, xR, yR, zR, t;
  11     quint32 i, magicNumber;
  12     qint32 qtVersion;
  13
  14     file.setFileName(argv[1]);
  15
  16     // Open file for writing
  17     file.open(QIODevice::WriteOnly);
  18     QDataStream out(&file);
  19
  20     // Write a header with a "magic number" and a Qt version
  21     out << (quint32)0xA0B0C0D0;
  22     out.setVersion(QDataStream::Qt_4_3);
  23
  24     // Write actual data
  25     for (i = 0; i < 100; i++) {
  26         for (t = 0.0; t < 50.0; t += 1.0) {
  27             out << (float) (5.0 * t * t)    << 0.0f << 0.0f
  28                 << (float) (cos(t) * 180.0) << 0.0f << 0.0f;
  29         }
  30     }
  31     file.close();
  32
  33     // Open file for reading
  34     file.open(QIODevice::ReadOnly);
  35     QDataStream in(&file);
  36
  37     // Read "magic number" and Qt version
  38     in >> magicNumber;
  39     if (magicNumber != 0xA0B0C0D0) {
  40         std::cout << "Magic number mismatch\n";
  41         exit(EXIT_FAILURE);
  42     }
  43
  44     in >> qtVersion;
  45     if (qtVersion != QDataStream::Qt_4_3) {
  46         std::cout << "Qt Version mismatch\n";
  47         exit(EXIT_FAILURE);
  48     }
  49
  50     std::cout << "Magic number = 0x" << std::hex << magicNumber << "\n";
  51     std::cout << "Qt Version = 0x" << qtVersion << "\n";
  52
  53     // Read data
  54     while (!in.atEnd()) {
  55         in >> x >> y >> z >> xR >> yR >> zR;
  56         std::cout << "x = "   <<  x
  57                   << "\ty = " <<  y
  58                   << "\tz = " <<  z
  59                   << "\txR = " << xR
  60                   << "\tyR = " << yR
  61                   << "\tzR = " << zR << "\n";
  62     }
  63     file.close();
  64
  65     return EXIT_SUCCESS;
  66 }