1 files changed, 130 insertions, 0 deletions
diff --git a/src/3rdparty/2geom/tests/implicitization-test.cpp b/src/3rdparty/2geom/tests/implicitization-test.cpp
new file mode 100644
index 0000000..bfc4c58
--- /dev/null
+++ b/src/3rdparty/2geom/tests/implicitization-test.cpp
@@ -0,0 +1,130 @@
+/*
+ * Test program for implicitization routines
+ *
+ * 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 <2geom/symbolic/implicit.h>
+
+#include "pick.h"
+
+#include <iostream>
+
+
+
+
+void print_basis(Geom::SL::basis_type const& b)
+{
+    for (size_t i= 0; i < 2; ++i)
+    {
+        for (size_t j= 0; j < 3; ++j)
+        {
+            std::cout << "b[" << i << "][" << j << "] = " << b[i][j] << "\n";
+        }
+    }
+}
+
+
+
+
+int main( int argc, char * argv[] )
+{
+    // degree of polinomial parametrization
+    // warning: not set N to a value greater than 20!
+    // (10 in case you don't utilize the micro-basis)
+    // determinant computation becomes very expensive
+    unsigned int N = 4;
+    // max modulus of polynomial coefficients
+    unsigned int M = 1000;
+
+    if (argc > 1)
+        N = std::atoi(argv[1]);
+    if (argc > 2)
+        M = std::atoi(argv[2]);
+
+    Geom::SL::MVPoly1 f, g;
+    Geom::SL::basis_type b;
+    Geom::SL::MVPoly3 p, q;
+    Geom::SL::Matrix<Geom::SL::MVPoly2> B;
+    Geom::SL::MVPoly2 r;
+
+    // generate two univariate polynomial with degree N
+    // and coeffcient in the range [-M, M]
+    f = pick_multipoly_max<1>(N, M);
+    g = pick_multipoly_max<1>(N, M);
+
+    std::cout << "parametrization: \n";
+    std::cout << "f = " << f << std::endl;
+    std::cout << "g = " << g << "\n\n";
+
+    // computes the micro-basis
+    microbasis(b, f, g);
+    // in case you want utilize directly the initial basis
+    // you should uncomment the next row and comment
+    // the microbasis function call
+    //make_initial_basis(b, f, g);
+
+    std::cout << "generators in vector form : \n";
+    print_basis(b);
+    std::cout << std::endl;
+
+    // micro-basis generators
+    basis_to_poly(p, b[0]);
+    basis_to_poly(q, b[1]);
+
+    std::cout << "generators as polynomial in R[t,x,y] : \n";
+    std::cout << "p = " << p << std::endl;
+    std::cout << "q = " << q << "\n\n";
+
+    // make up the Bezout matrix and compute the determinant
+    B = make_bezout_matrix(p, q);
+    r = determinant_minor(B);
+    r.normalize();
+
+    std::cout << "Bezout matrix: (entries are bivariate polynomials) \n";
+    std::cout << "B = " << B << "\n\n";
+    std::cout << "determinant: \n";
+    std::cout << "r(x, y) = " << r << "\n\n";
+
+    return EXIT_SUCCESS;
+}
+
+
+/*
+  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:
+*/
+// vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:fileencoding=utf-8:textwidth=99 :