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Diffstat (limited to 'src/py2geom/conic.cpp')
| -rw-r--r-- | src/py2geom/conic.cpp | 176 |
1 files changed, 176 insertions, 0 deletions
diff --git a/src/py2geom/conic.cpp b/src/py2geom/conic.cpp new file mode 100644 index 0000000..8e5360e --- /dev/null +++ b/src/py2geom/conic.cpp @@ -0,0 +1,176 @@ +/* + * Copyright 2009 Nathan Hurst <njh@njhurst.com> + * + * 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 <boost/python.hpp> +#include <boost/python/implicit.hpp> +#include <boost/python/suite/indexing/vector_indexing_suite.hpp> +#include <optional> + +#include "py2geom.h" +#include "helpers.h" + +#include "2geom/point.h" +#include "2geom/line.h" +#include "2geom/conicsec.h" + +using namespace boost::python; + +// helpers for point +static tuple xAx_to_tuple(Geom::xAx const& a) +{ + return make_tuple(a.c[0], a.c[1], a.c[2], a.c[3], a.c[4], a.c[5]); +} + +static Geom::xAx tuple_to_xAx(boost::python::tuple const& t) +{ + return Geom::xAx(extract<double>(t[0]), + extract<double>(t[1]), + extract<double>(t[2]), + extract<double>(t[3]), + extract<double>(t[4]), + extract<double>(t[5]) + ); +} + +static std::vector<double> xax_roots1(Geom::xAx const & xax, Geom::Point const &a, Geom::Point const &b) { return xax.roots(a,b); } +static std::vector<double> xax_roots2(Geom::xAx const & xax, Geom::Line const &l) { return xax.roots(l); } +static Geom::SBasis homo_eval_at(Geom::xAx const & xax, + Geom::SBasis const & x, + Geom::SBasis const & y, + Geom::SBasis const & w + ) { + return xax.evaluate_at(x, y, w); +} + +static Geom::SBasis xy_eval_at(Geom::xAx const & xax, + Geom::SBasis const & x, + Geom::SBasis const & y + ) { + return xax.evaluate_at(x, y); +} + +static Geom::D2<Geom::SBasis> wrap_rq_to_cubic_sb(Geom::RatQuad const & rq) { + return rq.toCubic().toSBasis(); +} + +static Geom::D2<Geom::SBasis> wrap_rq_to_cubic_sb_l(Geom::RatQuad const & rq, double l) { + return rq.toCubic(l).toSBasis(); +} + +static std::vector<Geom::Point> wrap_rq_to_cubic_l(Geom::RatQuad const & rq, double l) { + return rq.toCubic(l).controlPoints(); +} + +static std::vector<Geom::Point> wrap_rq_to_cubic(Geom::RatQuad const & rq) { + return wrap_rq_to_cubic_l(rq, rq.lambda()); +} + +static tuple wrap_rq_split(Geom::RatQuad const & rq) { + Geom::RatQuad a, b; + rq.split(a, b); + return make_tuple(a, b); +} + +static object wrap_xax_to_curve(Geom::xAx const & xax, Geom::Rect const & r) { + std::optional<Geom::RatQuad> oc = xax.toCurve(r); + return oc?object(*oc):object(); +} + + + +void wrap_conic() { + //conicsec.h + def("intersect", (std::vector<Geom::Point> (*)(Geom::xAx const &, Geom::xAx const &))Geom::intersect); + + class_<Geom::xAx>("xAx", init<>()) + .def(init<double, double, double, double, double, double>()) + .def(init<Geom::xAx const&>()) + .def_readonly("c", &Geom::xAx::c) + .def("tuple", xAx_to_tuple) + + .def("from_tuple", tuple_to_xAx) + .staticmethod("from_tuple") + .def("fromPoint", Geom::xAx::fromPoint) + .staticmethod("fromPoint") + .def("fromPoints", Geom::xAx::fromPoints) + .staticmethod("fromPoints") + .def("fromLine", (Geom::xAx (*)(Geom::Line l))Geom::xAx::fromLine) + .staticmethod("fromLine") + .def(self_ns::str(self)) + .def("valueAt", &Geom::xAx::valueAt) + + .def("implicit_form_coefficients", &Geom::xAx::implicit_form_coefficients) + + .def("isDegenerate", &Geom::xAx::isDegenerate) + .def("roots", &xax_roots1) + .def("roots", &xax_roots2) + .def("extrema", &Geom::xAx::extrema) + .def("gradient", &Geom::xAx::gradient) + .def("crossings", &Geom::xAx::crossings) + .def("evaluate_at", &xy_eval_at) + .def("evaluate_at", &homo_eval_at) + .def("toCurve", &wrap_xax_to_curve) + .def(self - self) + .def(self + float()) + .def(self * float()) + ; + + class_<Geom::RatQuad>("RatQuad", init<>()) + .def(init<Geom::Point, Geom::Point, Geom::Point, double>()) + .def_readonly("P", &Geom::RatQuad::P) + .def_readonly("w", &Geom::RatQuad::w) + .def_readonly("lam", &Geom::RatQuad::lambda) + //.def(self_ns::str(self)) + .def("at0", &Geom::RatQuad::at0) + .def("at1", &Geom::RatQuad::at1) + .def("pointAt", &Geom::RatQuad::pointAt) + + .def("toCubic", &wrap_rq_to_cubic) + .def("toCubic", &wrap_rq_to_cubic_l) + .def("toCubicSBasis", &wrap_rq_to_cubic_sb) + .def("toCubicSBasis", &wrap_rq_to_cubic_sb_l) + + .def("split", &wrap_rq_split) + .def("hermite", &Geom::RatQuad::hermite) + .def("homogeneous", &Geom::RatQuad::homogeneous) + .def("fromPointsTangents", &Geom::RatQuad::fromPointsTangents) + .staticmethod("fromPointsTangents") + ; + implicitly_convertible<Geom::Point,tuple>(); +}; + +/* + 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 : |