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/***************************************************************************
* fltk_example.cpp is part of Math Graphic Library
* Copyright (C) 2007-2016 Alexey Balakin <mathgl.abalakin@gmail.ru> *
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or *
* (at your option) any later version. *
* *
* This program is distributed in the hope that it will be useful, *
* but WITHOUT ANY WARRANTY; without even the implied warranty of *
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
* GNU General Public License for more details. *
* *
* You should have received a copy of the GNU General Public License *
* along with this program; if not, write to the *
* Free Software Foundation, Inc., *
* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
***************************************************************************/
#include "mgl2/fltk.h"
#include <thread>
//-----------------------------------------------------------------------------
#if defined(WIN32) || defined(_MSC_VER) || defined(__BORLANDC__)
#include <windows.h>
#else
#include <unistd.h>
#endif
void long_calculations() // just delay which correspond to simulate calculations
{
#if defined(WIN32) || defined(_MSC_VER) || defined(__BORLANDC__)
Sleep(1000);
#else
sleep(1); // which can be very long
#endif
}
#define PTHREAD_SAMPLE3
//-----------------------------------------------------------------------------
#if defined(PTHREAD_SAMPLE1) // first variant of multi-threading usage of mglFLTK window
mglFLTK *gr=NULL;
void *calc(void *)
{
mglPoint pnt;
for(int i=0;i<10;i++) // do calculation
{
long_calculations(); // which can be very long
pnt.Set(2*mgl_rnd()-1,2*mgl_rnd()-1);
if(gr)
{
gr->Clf(); // make new drawing
gr->Line(mglPoint(),pnt,"Ar2");
char str[10] = "i=0"; str[2] = '0'+i;
gr->Puts(mglPoint(),str);
gr->Update(); // update window
}
}
exit(0); return NULL;
}
int main(int argc,char **argv)
{
mgl_textdomain(argv?argv[0]:NULL,"");
static pthread_t thr;
pthread_create(&thr,0,calc,0);
pthread_detach(thr);
gr = new mglFLTK;
gr->Run(); return 0;
}
#elif defined(PTHREAD_SAMPLE2) // another variant of multi-threading usage of mglFLTK window. Work only if pthread was enabled for MathGL
mglPoint pnt; // some global variable for changeable data
int main(int argc,char **argv)
{
mgl_textdomain(argv?argv[0]:NULL,"");
mglFLTK gr("test");
gr.RunThr(); // <-- need MathGL version which use pthread
for(int i=0;i<10;i++) // do calculation
{
long_calculations();// which can be very long
pnt.Set(2*mgl_rnd()-1,2*mgl_rnd()-1);
gr.Clf(); // make new drawing
gr.Line(mglPoint(),pnt,"Ar2");
char str[10] = "i=0"; str[3] = '0'+i;
gr->Puts(mglPoint(),str);
gr.Update(); // update window
}
return 0; // finish calculations and close the window
}
#elif defined(PTHREAD_SAMPLE3) // another variant of multi-threading usage of mglFLTK window. Work only if pthread was enabled for MathGL
mglFLTK *gr=NULL;
void calc()
{
mglPoint pnt;
for(int i=0;i<10;i++) // do calculation
{
long_calculations(); // which can be very long
pnt.Set(2*mgl_rnd()-1,2*mgl_rnd()-1);
if(gr)
{
gr->Clf(); // make new drawing
gr->Line(mglPoint(),pnt,"Ar2");
char str[10] = "i=0"; str[2] = '0'+i;
gr->Puts(mglPoint(),str);
gr->Update(); // update window
}
}
exit(0);
}
int main(int argc,char **argv)
{
mgl_textdomain(argv?argv[0]:NULL,"");
// static pthread_t thr;
std::thread(calc).detach();
gr = new mglFLTK;
gr->Run(); return 0;
}
#else // just default samples
//-----------------------------------------------------------------------------
int test_wnd(mglGraph *gr);
int sample(mglGraph *gr);
int sample_1(mglGraph *gr);
int sample_2(mglGraph *gr);
int sample_3(mglGraph *gr);
int sample_d(mglGraph *gr);
//-----------------------------------------------------------------------------
#if MGL_HAVE_PTHR_WIDGET
class myDraw : public mglDraw
{
mglPoint pnt; // some variable for changeable data
long i; // another variable to be shown
mglWnd *wnd; // external window for plotting
public:
myDraw(mglWnd *w=0) : mglDraw() { i=0; wnd=w; }
void SetWnd(mglWnd *w) { wnd=w; }
int Draw(mglGraph *gr)
{
gr->Line(mglPoint(),pnt,"Ar2");
char str[16]; snprintf(str,15,"i=%ld",i);
gr->Puts(mglPoint(),str);
return 0;
}
void Calc()
{
for(i=0;;i++) // do calculation
{
Check(); // check if need pause
long_calculations();// which can be very long
pnt.Set(2*mgl_rnd()-1,2*mgl_rnd()-1);
if(wnd) wnd->Update();
}
}
} dr;
#endif
//-----------------------------------------------------------------------------
int main(int argc,char **argv)
{
mgl_textdomain(argv?argv[0]:NULL,"");
mglFLTK *gr;
char key = 0;
if(argc>1) key = argv[1][0]!='-' ? argv[1][0]:argv[1][1];
else printf("You may specify argument '1', '2', '3', 'd' for viewing examples of 1d, 2d, 3d, dual plotting,\nor 'm' for multi-threading sample.\n");
switch(key)
{
case '0': gr = new mglFLTK((mglDraw *)NULL,"1D plots");
gr->Rotate(40,60); gr->Box(); gr->Light(true);
gr->FSurf("sin(4*pi*x*y)"); gr->Update(); break;
case '1': gr = new mglFLTK(sample_1,"1D plots"); break;
case '2': gr = new mglFLTK(sample_2,"2D plots"); break;
case '3': gr = new mglFLTK(sample_3,"3D plots"); break;
case 'd': gr = new mglFLTK(sample_d,"Dual plots");break;
case 't': gr = new mglFLTK(test_wnd,"Testing"); break;
case 'f': gr = new mglFLTK("Frame drawing");
gr->NewFrame(); gr->Box(); gr->EndFrame(); break;
#if MGL_HAVE_PTHR_WIDGET
case 'm': gr = new mglFLTK(&dr,"Multi-threading test");
dr.SetWnd(gr); dr.Run(); break;
#endif
default: gr = new mglFLTK(sample,"Drop and waves"); break;
}
gr->Run(); return 0;
}
#endif
//-----------------------------------------------------------------------------
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