server.cxx File Reference

Detailed Description

This tutorial demonstrates how three.js model for geometry can be created.

In server.cxx one uses RGeomDescription class from geometry viewer, which produces JSON data with all necessary information. Then RWebWindow is started and this information provided. In client.html one uses build function to create Object3D with geometry Then such object placed in three.js scene and rendered. Also simple animation is implemented

 
#include <ROOT/RWebWindow.hxx>
 
std::shared_ptr<ROOT::RWebWindow> window;
 
int counter{0};
 
void ProcessData(unsigned connid, const std::string &arg)
{
   printf("Get msg %s \n", arg.c_str());
 
   counter++;
 
   if (arg == "get_text") {
      // send arbitrary text message
      window->Send(connid, TString::Format("Message%d", counter).Data());
   } else if (arg == "get_binary") {
      // send float array as binary
      float arr[10];
      for (int n = 0; n < 10; ++n)
         arr[n] = counter;
      window->SendBinary(connid, arr, sizeof(arr));
   } else if (arg == "halt") {
      // terminate ROOT
      window->TerminateROOT();
   }
}
 
void server()
{
   // create window
   window = ROOT::RWebWindow::Create();
 
   // Detect macro file location to specify full path to the HTML file
   std::string fname = __FILE__;
   auto pos = fname.find("server.cxx");
   if (pos > 0)
      fname.resize(pos);
   else
      fname.clear();
   fname.append("client.html");
 
   // configure default html page
   // either HTML code can be specified or just name of file after 'file:' prefix
   window->SetDefaultPage("file:" + fname);
 
   // this is call-back, invoked when message received from client
   window->SetDataCallBack(ProcessData);
 
   window->SetGeometry(300, 500); // configure predefined geometry
 
   window->Show();
}

Author

Sergey Linev

Definition in file server.cxx.