WindowFrameRate.cpp

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/*
 * WindowFrameRate.cpp
 *
 * Part of Fly! Legacy project
 *
 * Copyright 2005 Chris Wallace
 *
 * Fly! Legacy 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.
 *
 * Fly! Legacy 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 Fly! Legacy; if not, write to the Free Software
 *    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 *
 */

#include "../Include/FlyLegacy.h"
#include "../Include/Fui.h"
#include "../Include/Globals.h"


void FrameRateNotify (Tag id,
                      Tag component,
                      EFuiEvents event,
                      EFuiEvents subevent)
{
  CFuiManager *fui = globals->fuimgr;
  switch (event) {
  case EVENT_OPENWINDOW:
    {
      // Horizontal range is the number of stored samples, no grid is applicable
      // Vertical range defaults to 100 fps, grid lines very 20 fps
      float maxSamples = (float)(globals->drawRate->GetMaxSamples());
      fui->SetGraphGridRange (id, 'graf', 0, 0, maxSamples, 100.0f);
      fui->SetGraphGridSpacing (id, 'graf', maxSamples, 20.0f);

      // Add redraw frame rate graph trace
      fui->AddGraphTrace (id, 'graf', 'draw', FUI_GRAPH_TRACE_LINE);
      fui->SetGraphTraceColour (id, 'graf', 'draw', MakeRGB (255, 0, 0));
      fui->SetGraphTraceRange (id, 'graf', 'draw', 0, 0, maxSamples, 100.0f);

      // Set frame rate counter colour
      fui->SetLabelColour (id, 'rate', MakeRGB (255, 255, 255));
    }
    break;

  case EVENT_UPDATE:
    {
      // Update framerate
      static int rate = 0;
      rate++; if (rate > 100) rate = 0;
      char r[8];
      sprintf (r, "%d", r);
      fui->SetComponentText (id, 'rate', r);

      // Update traces
      float total = 0;
      fui->ClearGraphTracePoints(id, 'graf', 'draw');
      int nSamples = globals->drawRate->GetActualSamples ();
      for (int i=0; i<nSamples; i++) {
        float x = (float)i;
        float y = globals->drawRate->GetSample (i);
        fui->AddGraphTracePoint (id, 'graf', 'draw', x, y);
        total += y;
      }

      // Update average frame rate
      float avg = total / (float)nSamples;
      char s[8];
      sprintf (s, "%3d", (int)(floorf(avg)));
      fui->SetComponentText (id, 'rate', s);


    }
    break;
  }

}

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