1 files changed, 127 insertions, 0 deletions
diff --git a/src/3rdparty/2geom/src/toys/elliptiarc-curve-fitting.cpp b/src/3rdparty/2geom/src/toys/elliptiarc-curve-fitting.cpp
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+++ b/src/3rdparty/2geom/src/toys/elliptiarc-curve-fitting.cpp
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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:
+*/