
/************************************************************************/
/*                                                                      */
/*                 Copyright 2010 by Ullrich Koethe                     */
/*                                                                      */
/*    This file is part of the VIGRA computer vision library.           */
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/*        http://hci.iwr.uni-heidelberg.de/vigra/                       */
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#define PY_ARRAY_UNIQUE_SYMBOL vigranumpygeometry_PyArray_API
//#define NO_IMPORT_ARRAY

#include <vigra/numpy_array.hxx>
#include <vigra/numpy_array_converters.hxx>
#include <vigra/polygon.hxx>
#include <vigra/array_vector.hxx>
#include <vigra/tinyvector.hxx>

namespace python = boost::python;

namespace vigra
{

template < class Coordinate>
NumpyAnyArray
pyconvexHull(NumpyArray<1, TinyVector<Coordinate, 2>, UnstridedArrayTag > points)
{
    ArrayVector<TinyVector<Coordinate, 2> > hull;
    {
        PyAllowThreads _pythread;
    
        convexHull(ArrayVectorView<TinyVector<Coordinate, 2> >(points.shape(0), points.data()), hull);
    }

    NumpyArray<1, TinyVector<Coordinate, 2> > result(MultiArrayShape<1>::type(hull.size()));
    for(MultiArrayIndex i = 0; i < result.shape(0); ++i)
        result(i) = hull[i];

    return result;
}

VIGRA_PYTHON_MULTITYPE_FUNCTOR(pythonConvexHull, pyconvexHull)

void defineGeometry()
{
    using namespace python;

    docstring_options doc_options(true, true, false);

    multidef("convexHull",
         pythonConvexHull<double, float, Int32>(),
         args("points"),
        "Compute the convex hull of a point set.\n"
        "\n"
        "For details see convexHull_ in the vigra C++ documentation.\n\n");
}

} // namespace vigra

using namespace vigra;
using namespace boost::python;

BOOST_PYTHON_MODULE_INIT(geometry)
{
    import_vigranumpy();
    defineGeometry();
}
