C++ (Cpp) grid::height示例

示例#1

文件： mapnik_grid.cpp 项目： MapQuest/mapnik

mapnik::grid::value_type get_pixel(mapnik::grid const& grid, int x, int y)
{
    if (x < static_cast<int>(grid.width()) && y < static_cast<int>(grid.height()))
    {
        mapnik::grid::data_type const & data = grid.data();
        return data(x,y);
    }
    PyErr_SetString(PyExc_IndexError, "invalid x,y for grid dimensions");
    boost::python::throw_error_already_set();
    return 0;
}

示例#2

文件： mapnik_grid.cpp 项目： chriskoli/mapnik

int get_pixel(mapnik::grid const& grid, int x, int y)
{
    if (x < static_cast<int>(grid.width()) && y < static_cast<int>(grid.height()))
    {
        mapnik::grid::value_type const * row = grid.getRow(y);
        mapnik::grid::value_type const pixel = row[x];
        return pixel;
    }
    PyErr_SetString(PyExc_IndexError, "invalid x,y for grid dimensions");
    boost::python::throw_error_already_set();
    return 0;
}