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/*
* Elliptical Arc Fitting Toy
*
* Authors:
* Marco Cecchetti <mrcekets at gmail.com>
*
* Copyright 2008 authors
*
* This library is free software; you can redistribute it and/or
* modify it either under the terms of the GNU Lesser General Public
* License version 2.1 as published by the Free Software Foundation
* (the "LGPL") or, at your option, under the terms of the Mozilla
* Public License Version 1.1 (the "MPL"). If you do not alter this
* notice, a recipient may use your version of this file under either
* the MPL or the LGPL.
*
* You should have received a copy of the LGPL along with this library
* in the file COPYING-LGPL-2.1; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
* You should have received a copy of the MPL along with this library
* in the file COPYING-MPL-1.1
*
* The contents of this file are subject to the Mozilla Public License
* Version 1.1 (the "License"); you may not use this file except in
* compliance with the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
* OF ANY KIND, either express or implied. See the LGPL or the MPL for
* the specific language governing rights and limitations.
*/
#include <gsl/gsl_linalg.h>
#include <2geom/d2.h>
#include <2geom/sbasis.h>
#include <2geom/path.h>
#include <2geom/bezier-to-sbasis.h>
#include <2geom/elliptical-arc.h>
#include <toys/path-cairo.h>
#include <toys/toy-framework-2.h>
using namespace Geom;
class EAFittingToy : public Toy
{
private:
void draw( cairo_t *cr, std::ostringstream *notify,
int width, int height, bool save, std::ostringstream *timer_stream) override
{
cairo_set_line_width (cr, 0.2);
cairo_set_source_rgb(cr, 0.0, 0.0, 0.);
//D2<SBasis> SB = handles_to_sbasis(handles.begin(), total_handles - 1);
D2<SBasis> SB = psh.asBezier();
cairo_d2_sb(cr, SB);
cairo_stroke(cr);
cairo_set_line_width (cr, 0.4);
cairo_set_source_rgba(cr, 0.0, 0.0, 0.7, 1.0);
try
{
EllipticalArc EA;
if (!arc_from_sbasis(EA, SB, tolerance, 10)) {
// *notify << "distance error: " << convert.get_error()
// << " ( " << convert.get_bound() << " )" << std::endl
// << "angle error: " << convert.get_angle_error()
// << " ( " << convert.get_angle_tolerance() << " )";
Toy::draw(cr, notify, width, height, save,timer_stream);
return;
}
D2<SBasis> easb = EA.toSBasis();
cairo_d2_sb(cr, easb);
cairo_stroke(cr);
}
catch( RangeError e )
{
std::cerr << e.what() << std::endl;
Toy::draw(cr, notify, width, height, save,timer_stream);
return;
}
Toy::draw(cr, notify, width, height, save,timer_stream);
}
public:
EAFittingToy( double _tolerance )
: tolerance(_tolerance)
{
handles.push_back(&psh);
total_handles = 6;
for ( unsigned int i = 0; i < total_handles; ++i )
{
psh.push_back(uniform()*400, uniform()*400);
}
}
PointSetHandle psh;
unsigned int total_handles;
double tolerance;
};
int main(int argc, char **argv)
{
double tolerance = 8;
if(argc > 1)
sscanf(argv[1], "%lf", &tolerance);
init( argc, argv, new EAFittingToy(tolerance) );
return 0;
}
/*
Local Variables:
mode:c++
c-file-style:"stroustrup"
c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
indent-tabs-mode:nil
fill-column:99
End:
*/
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