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 int main(int argc, char *argv[])
  11 {
  12     QFile file;
  13     float x, y, z, xR, yR, zR, t;
  14     quint32 i, magicNumber, protVersion;
  15
  16     file.setFileName(argv[1]);
  17
  18     // Open file for writing
  19     file.open(QIODevice::WriteOnly);
  20     QDataStream out(&file);
  21
  22     // Write a header with a "magic number" and a protocol version
  23     out << (quint32)MAGIC_NUMBER;
  24     out << (quint32)PROT_VERSION;
  25
  26     // Write actual data
  27     for (i = 0; i < 100; i++) {
  28         for (t = 0.0; t < 50.0; t += 1.0) {
  29             out << (float) (5.0 * t * t)    << 0.0f << 0.0f
  30                 << (float) (cos(t) * 180.0) << 0.0f << 0.0f;
  31         }
  32     }
  33     file.close();
  34
  35     // Open file for reading
  36     file.open(QIODevice::ReadOnly);
  37     QDataStream in(&file);
  38
  39     // Read "magic number" and protocol version
  40     in >> magicNumber;
  41     if (magicNumber != 0xA0B0C0D0) {
  42         std::cout << "Magic number mismatch\n";
  43         exit(EXIT_FAILURE);
  44     }
  45
  46     in >> protVersion;
  47     if (protVersion != PROT_VERSION) {
  48         std::cout << "Protocol version mismatch\n";
  49         exit(EXIT_FAILURE);
  50     }
  51
  52     std::cout << "Magic number = 0x" << std::hex << magicNumber << "\n";
  53     std::cout << "Protocol version = 0x" << std::hex << protVersion << "\n";
  54
  55     // Read data
  56     while (!in.atEnd()) {
  57         in >> x >> y >> z >> xR >> yR >> zR;
  58         std::cout << "x = "    << x
  59                   << "\ty = "  << y
  60                   << "\tz = "  << z
  61                   << "\txR = " << xR
  62                   << "\tyR = " << yR
  63                   << "\tzR = " << zR << "\n";
  64     }
  65     file.close();
  66
  67     return EXIT_SUCCESS;
  68 }