mirror of
https://github.com/RetroDECK/ES-DE.git
synced 2025-04-10 19:15:13 +00:00
74 lines
3 KiB
C++
74 lines
3 KiB
C++
/*
|
|
#
|
|
# File : plotter1d.cpp
|
|
# ( C++ source file )
|
|
#
|
|
# Description : A simple math formula plotter.
|
|
# This file is a part of the CImg Library project.
|
|
# ( http://cimg.eu )
|
|
#
|
|
# Copyright : David Tschumperlé
|
|
# ( http://tschumperle.users.greyc.fr/ )
|
|
#
|
|
# License : CeCILL v2.0
|
|
# ( http://www.cecill.info/licences/Licence_CeCILL_V2-en.html )
|
|
#
|
|
# This software is governed by the CeCILL license under French law and
|
|
# abiding by the rules of distribution of free software. You can use,
|
|
# modify and/ or redistribute the software under the terms of the CeCILL
|
|
# license as circulated by CEA, CNRS and INRIA at the following URL
|
|
# "http://www.cecill.info".
|
|
#
|
|
# As a counterpart to the access to the source code and rights to copy,
|
|
# modify and redistribute granted by the license, users are provided only
|
|
# with a limited warranty and the software's author, the holder of the
|
|
# economic rights, and the successive licensors have only limited
|
|
# liability.
|
|
#
|
|
# In this respect, the user's attention is drawn to the risks associated
|
|
# with loading, using, modifying and/or developing or reproducing the
|
|
# software by the user in light of its specific status of free software,
|
|
# that may mean that it is complicated to manipulate, and that also
|
|
# therefore means that it is reserved for developers and experienced
|
|
# professionals having in-depth computer knowledge. Users are therefore
|
|
# encouraged to load and test the software's suitability as regards their
|
|
# requirements in conditions enabling the security of their systems and/or
|
|
# data to be ensured and, more generally, to use and operate it in the
|
|
# same conditions as regards security.
|
|
#
|
|
# The fact that you are presently reading this means that you have had
|
|
# knowledge of the CeCILL license and that you accept its terms.
|
|
#
|
|
*/
|
|
|
|
// Include CImg library file and use its main namespace
|
|
#include "CImg.h"
|
|
using namespace cimg_library;
|
|
|
|
// Main procedure
|
|
//----------------
|
|
int main(int argc,char **argv) {
|
|
|
|
// Read command line argument.
|
|
cimg_usage("Simple plotter of mathematical formulas");
|
|
const char *const formula = cimg_option("-f","sin(x/8) % cos(2*x)","Formula to plot");
|
|
const float x0 = cimg_option("-x0",-5.0f,"Minimal X-value");
|
|
const float x1 = cimg_option("-x1",5.0f,"Maximal X-value");
|
|
const int resolution = cimg_option("-r",1024,"Plot resolution");
|
|
const unsigned int nresolution = resolution>1?resolution:1024;
|
|
const unsigned int plot_type = cimg_option("-p",1,"Plot type");
|
|
const unsigned int vertex_type = cimg_option("-v",1,"Vertex type");
|
|
|
|
// Create plot data.
|
|
CImg<double> values(4,nresolution,1,1,0);
|
|
const unsigned int r = nresolution - 1;
|
|
cimg_forY(values,X) values(0,X) = x0 + X*(x1 - x0)/r;
|
|
cimg::eval(formula,values).move_to(values);
|
|
|
|
// Display interactive plot window.
|
|
values.display_graph(formula,plot_type,vertex_type,"X-axis",x0,x1,"Y-axis");
|
|
|
|
// Quit.
|
|
return 0;
|
|
}
|