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// Copyright (C) 2013 Davis E. King (davis@dlib.net)
// License: Boost Software License See LICENSE.txt for the full license.
#include <dlib/python.h>
#include <dlib/matrix.h>
#include <dlib/geometry/vector.h>
#include <pybind11/stl_bind.h>
#include "indexing.h"
using namespace dlib;
using namespace std;
typedef matrix<double,0,1> cv;
PYBIND11_MAKE_OPAQUE(std::vector<point>);
void cv_set_size(cv& m, long s)
{
m.set_size(s);
m = 0;
}
double dotprod ( const cv& a, const cv& b)
{
return dot(a,b);
}
string cv__str__(const cv& v)
{
ostringstream sout;
for (long i = 0; i < v.size(); ++i)
{
sout << v(i);
if (i+1 < v.size())
sout << "\n";
}
return sout.str();
}
string cv__repr__ (const cv& v)
{
std::ostringstream sout;
sout << "dlib.vector([";
for (long i = 0; i < v.size(); ++i)
{
sout << v(i);
if (i+1 < v.size())
sout << ", ";
}
sout << "])";
return sout.str();
}
std::shared_ptr<cv> cv_from_object(py::object obj)
{
try {
long nr = obj.cast<long>();
auto temp = std::make_shared<cv>(nr);
*temp = 0;
return temp;
} catch(py::cast_error &e) {
py::list li = obj.cast<py::list>();
const long nr = len(obj);
auto temp = std::make_shared<cv>(nr);
for ( long r = 0; r < nr; ++r)
{
(*temp)(r) = li[r].cast<double>();
}
return temp;
}
}
long cv__len__(cv& c)
{
return c.size();
}
void cv__setitem__(cv& c, long p, double val)
{
if (p < 0) {
p = c.size() + p; // negative index
}
if (p > c.size()-1) {
PyErr_SetString( PyExc_IndexError, "index out of range"
);
throw py::error_already_set();
}
c(p) = val;
}
double cv__getitem__(cv& m, long r)
{
if (r < 0) {
r = m.size() + r; // negative index
}
if (r > m.size()-1 || r < 0) {
PyErr_SetString( PyExc_IndexError, "index out of range"
);
throw py::error_already_set();
}
return m(r);
}
cv cv__getitem2__(cv& m, py::slice r)
{
size_t start, stop, step, slicelength;
if (!r.compute(m.size(), &start, &stop, &step, &slicelength))
throw py::error_already_set();
cv temp(slicelength);
for (size_t i = 0; i < slicelength; ++i) {
temp(i) = m(start); start += step;
}
return temp;
}
py::tuple cv_get_matrix_size(cv& m)
{
return py::make_tuple(m.nr(), m.nc());
}
// ----------------------------------------------------------------------------------------
string point__repr__ (const point& p)
{
std::ostringstream sout;
sout << "point(" << p.x() << ", " << p.y() << ")";
return sout.str();
}
string point__str__(const point& p)
{
std::ostringstream sout;
sout << "(" << p.x() << ", " << p.y() << ")";
return sout.str();
}
long point_x(const point& p) { return p.x(); }
long point_y(const point& p) { return p.y(); }
// ----------------------------------------------------------------------------------------
void bind_vector(py::module& m)
{
{
py::class_<cv, std::shared_ptr<cv>>(m, "vector", "This object represents the mathematical idea of a column vector.")
.def(py::init())
.def("set_size", &cv_set_size)
.def("resize", &cv_set_size)
.def(py::init(&cv_from_object))
.def("__repr__", &cv__repr__)
.def("__str__", &cv__str__)
.def("__len__", &cv__len__)
.def("__getitem__", &cv__getitem__)
.def("__getitem__", &cv__getitem2__)
.def("__setitem__", &cv__setitem__)
.def_property_readonly("shape", &cv_get_matrix_size)
.def(py::pickle(&getstate<cv>, &setstate<cv>));
m.def("dot", &dotprod, "Compute the dot product between two dense column vectors.");
}
{
typedef point type;
py::class_<type>(m, "point", "This object represents a single point of integer coordinates that maps directly to a dlib::point.")
.def(py::init<long,long>(), py::arg("x"), py::arg("y"))
.def("__repr__", &point__repr__)
.def("__str__", &point__str__)
.def_property_readonly("x", &point_x, "The x-coordinate of the point.")
.def_property_readonly("y", &point_y, "The y-coordinate of the point.")
.def(py::pickle(&getstate<type>, &setstate<type>));
}
{
typedef std::vector<point> type;
py::bind_vector<type>(m, "points", "An array of point objects.")
.def("clear", &type::clear)
.def("resize", resize<type>)
.def("extend", extend_vector_with_python_list<point>)
.def(py::pickle(&getstate<type>, &setstate<type>));
}
}