G
main
int main	(	const int	argc,
		const char *	argv[]
	)
Definition at line 20 of file example-surf2d.cxx.
 {
 
   size_t nspin=vtkfig::NSpin();
   vtkfig::Frame frame;
   
   const int Nx = 200;
   const int Ny = 250;
   
   std::vector<double> x(Nx);
   std::vector<double> y(Ny);
   std::vector<double> z(Nx*Ny);
   
   const double x_low = -2.5;
   const double x_upp = 1.5;
   const double y_low = -2.5;
   const double y_upp = 4;
   const double dx = (x_upp-x_low)/(Nx-1);
   const double dy = (y_upp-y_low)/(Ny-1);
 
 
 
   
 
   for (int i=0; i<Nx; i++)
     x[i] = x_low+i*dx;
   
   for (int i=0; i<Ny; i++)
     y[i] = y_low + i*dy;
 
 
   double t=0;
   double dt=0.1;
   size_t ii=0;
   auto t0=std::chrono::system_clock::now();
   double i0=ii;
 
   vtkfig::Surf2D surf;
 
   surf.SetGrid(x,y);
 
   auto colors=vtkfig::RGBTable
     { 
       {0.0, 0.0, 0.0, 1.0},
       {0.5, 0.0, 1.0, 0.0},
       {1.0, 1.0, 0.0, 0.0}
     };
   surf.SetRGBTable(colors,255);
 
   frame.AddFigure(surf);
 
   while (ii<nspin)
   {
     
     for (int i=0; i<Nx; i++)
       for (int j=0; j<Ny; j++)
         z[j*Nx+i] = G(x[i],y[j],t);
     
     surf.UpdateValues(z);
     
 
     frame.Show();
     
     if (ii==3) 
       frame.WritePNG("example-surf2d.png");
 
     t+=dt;
 
     auto t1=std::chrono::system_clock::now();
     double xdt=std::chrono::duration_cast<std::chrono::duration<double>>(t1-t0).count();
     double i1=ii;
     if (xdt>4.0)
     {
       printf("Frame rate: %.2f fps\n",(double)(i1-i0)/4.0);
       t0=std::chrono::system_clock::now();
       i0=ii;
       fflush(stdout);
     }
     ii++;
   }
 
 }
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