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/*
VOTable to SVG convertor
Copyright © 2018 F.Hroch (hroch@physics.muni.cz)
This file is part of Munipack.
Munipack 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 3 of the License, or
(at your option) any later version.
Munipack 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 Munipack. If not, see <http://www.gnu.org/licenses/>.
*/
#include "votable.h"
#include <wx/wx.h>
#include <wx/txtstrm.h>
#include <cmath>
#include <vector>
using namespace std;
SVGcanvas::SVGcanvas(const wxString& filename): VOTable(filename)
{
proj_alpha = 0;
proj_delta = 0;
proj_scale = 1000;
mag_limit = 15;
canvas_width = 500;
canvas_height = 500;
}
void SVGcanvas::SetProjection(const wxString& a) { proj_type = a;}
void SVGcanvas::SetProjectionCenter(double a,double d)
{
proj_alpha = a;
proj_delta = d;
}
void SVGcanvas::SetCanvasSize(long w, long h)
{
canvas_width = w;
canvas_height = h;
}
void SVGcanvas::SetScale(double c) { proj_scale = c; }
void SVGcanvas::SetMaglim(double x) { mag_limit = x; }
void SVGcanvas::SetMagkey(const wxString& a) { mag_key = a; }
void SVGcanvas::SetAlphakey(const wxString& a) { alpha_key = a; }
void SVGcanvas::SetDeltakey(const wxString& a) { delta_key = a; }
bool SVGcanvas::Save(wxOutputStream& output)
{
if( ! IsOk() ) return false;
if( HasError() ) return false;
if( resources.size() == 0 )
return false;
// We are loosers, only the first table is converted.
const VOTableTable table(resources[0].table);
int nra = -1, ndec = -1, nmag = -1;
vector<wxString> fs = table.GetFields();
for(vector<wxString>::const_iterator i = fs.begin(); i != fs.end(); ++i) {
if( *i == alpha_key ) {
nra = i - fs.begin();
}
else if( *i == delta_key ) {
ndec = i - fs.begin();
}
else if( *i == mag_key ) {
nmag = i - fs.begin();
}
}
if( nra == -1 || ndec == -1 || nmag == -1 ) {
wxLogError("RA, Dec of magnitude column has no data.");
return false;
}
vector<wxString> xra = table.GetColumn(nra);
vector<wxString> xdec = table.GetColumn(ndec);
vector<wxString> xmag = table.GetColumn(nmag);
wxTextOutputStream cout(output);
cout << "<svg xmlns=\"http://www.w3.org/2000/svg\""
<< " width=\"" << int(canvas_width)
<< "\" height=\"" << int(canvas_height) << "\">" << endl;
// WARNING: only simple gnonomical projection is implemented
double c = xdec.size() > 0 ? cos(ToDouble(xdec[0])/57.3) : 1.0;
for(size_t i = 0; i < xra.size(); i++) {
double ra = ToDouble(xra[i]);
double dec = ToDouble(xdec[i]);
double mag = ToDouble(xmag[i]);
double x = canvas_width/2 - proj_scale*(ra - proj_alpha)*c;
double y = canvas_height/2 - proj_scale*(dec - proj_delta);//reverse y-axis!
double r = 3.0*pow(10.0,0.11*(mag_limit - mag));
if( 0 <= x && x <= canvas_width && 0 <= y && y <= canvas_height )
cout << "<circle cx=\"" << x << "\" cy=\"" << y
<< "\" r=\"" << r << "\"/>" << endl;
}
cout << "</svg>" << endl;
return true;
}
double SVGcanvas::ToDouble(const wxString& a) const
{
double x;
a.ToDouble(&x);
return x;
}
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