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Improve examples/chart-simple demo program 

Make sure that the first chart entry is not zero because this wouldn't
show the first part of FL_SPECIALPIE_CHART separated from the circle.
This commit is contained in:
Albrecht Schlosser 2023-01-16 00:30:32 +01:00
parent f44bdfb7cf
commit 420042aefb
1 changed files with 4 additions and 2 deletions
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6
examples/chart-simple.cxx
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@ -5,7 +5,7 @@
// Origin: http://seriss.com/people/erco/fltk/#Fl_Chart
//
// Copyright 2008 by Greg Ercolano.
// Copyright 1998-2020 by Bill Spitzak and others.
// Copyright 1998-2023 by Bill Spitzak and others.
//
// This library is free software. Distribution and use rights are outlined in
// the file "COPYING" which should have been included with this file. If this
@ -42,7 +42,9 @@ int main() {
// Fl_Chart with a sin() wave of data
G_chart = new Fl_Chart(20, 20, G_win->w()-40, G_win->h()-80, "Chart");
G_chart->bounds(-125.0, 125.0);
for ( double t=0; t<15; t+=0.5 ) {
const double start = 1.5;
const double end = start + 15.1;
for (double t = start; t < end; t += 0.5) {
double val = sin(t) * 125.0;
static char val_str[20];
sprintf(val_str, "%.0lf", val);