summaryrefslogtreecommitdiffstats
path: root/src/toys/elliptiarc-curve-fitting.cpp
diff options
context:
space:
mode:
Diffstat (limited to '')
-rw-r--r--src/toys/elliptiarc-curve-fitting.cpp127
1 files changed, 127 insertions, 0 deletions
diff --git a/src/toys/elliptiarc-curve-fitting.cpp b/src/toys/elliptiarc-curve-fitting.cpp
new file mode 100644
index 0000000..6c47f8d
--- /dev/null
+++ b/src/toys/elliptiarc-curve-fitting.cpp
@@ -0,0 +1,127 @@
+/*
+ * 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:
+*/