gtk2_ardour/curvetest.cc

   1
   2 /*
   3     Copyright (C) 2000-2007 Paul Davis
   4
   5     This program is free software; you can redistribute it and/or modify
   6     it under the terms of the GNU General Public License as published by
   7     the Free Software Foundation; either version 2 of the License, or
   8     (at your option) any later version.
   9
  10     This program is distributed in the hope that it will be useful,
  11     but WITHOUT ANY WARRANTY; without even the implied warranty of
  12     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13     GNU General Public License for more details.
  14
  15     You should have received a copy of the GNU General Public License
  16     along with this program; if not, write to the Free Software
  17     Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  18
  19 */
  20
  21 #include <iostream>
  22 #include <iomanip>
  23 #include <fstream>
  24 #include <cfloat>
  25 #include <unistd.h>
  26
  27 #include <pbd/id.h>
  28
  29 #include <ardour/curve.h>
  30
  31 using namespace std;
  32 using namespace ARDOUR;
  33 using namespace PBD;
  34
  35 int
  36 curvetest (string filename)
  37 {
  38         // needed to initialize ID objects/counter used
  39         // by Curve et al.
  40         PBD::ID::init ();
  41
  42         ifstream in (filename.c_str());
  43         stringstream line;
  44         Curve c (-1.0, +1.0, 0, true);
  45         double minx = DBL_MAX;
  46         double maxx = DBL_MIN;
  47
  48         while (in) {
  49                 double x, y;
  50
  51                 in >> x;
  52                 in >> y;
  53
  54                 if (!in) {
  55                         break;
  56                 }
  57
  58                 if (x < minx) {
  59                         minx = x;
  60                 }
  61
  62                 if (x > maxx) {
  63                         maxx = x;
  64                 }
  65
  66                 c.add (x, y);
  67         }
  68
  69
  70         float foo[1024];
  71
  72         c.get_vector (minx, maxx, foo, 1024);
  73
  74         for (int i = 0; i < 1024; ++i) {
  75                 cout << setw(20) << setprecision(20) << minx + (((double) i / 1024.0) * (maxx - minx)) << ' ' << foo[i] << endl;
  76         }
  77
  78         return 0;
  79 }