本文整理汇总了C++中query::get_bbox方法的典型用法代码示例。如果您正苦于以下问题：C++ query::get_bbox方法的具体用法？C++ query::get_bbox怎么用？C++ query::get_bbox使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类query的用法示例。
在下文中一共展示了query::get_bbox方法的15个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。
示例1: features
featureset_ptr ogr_datasource::features(query const& q) const
{
if (! is_bound_) bind();
if (dataset_ && layer_.is_valid())
{
OGRLayer* layer = layer_.layer();
if (indexed_)
{
filter_in_box filter(q.get_bbox());
return featureset_ptr(new ogr_index_featureset<filter_in_box>(*dataset_,
*layer,
filter,
index_name_,
desc_.get_encoding(),
multiple_geometries_));
}
else
{
return featureset_ptr(new ogr_featureset (*dataset_,
*layer,
q.get_bbox(),
desc_.get_encoding(),
multiple_geometries_));
}
}
return featureset_ptr();
}示例2: features
featureset_ptr ogr_datasource::features(query const& q) const
{
if (!is_bound_) bind();
if (dataset_ && layer_)
{
// TODO - actually filter fields!
// http://trac.osgeo.org/gdal/wiki/rfc29_desired_fields
// http://trac.osgeo.org/gdal/wiki/rfc28_sqlfunc
#if 0
std::ostringstream s;
s << "select ";
std::set<std::string> const& props=q.property_names();
std::set<std::string>::const_iterator pos=props.begin();
std::set<std::string>::const_iterator end=props.end();
while (pos != end)
{
s <<",\""<<*pos<<"\"";
++pos;
}
s << " from " << layerName_ ;
// execute existing SQL
OGRLayer* layer = dataset_->ExecuteSQL (s.str(), poly);
// layer must be freed
dataset_->ReleaseResultSet (layer);
#endif
if (indexed_)
{
filter_in_box filter(q.get_bbox());
return featureset_ptr(new ogr_index_featureset<filter_in_box> (*dataset_,
*layer_,
filter,
index_name_,
desc_.get_encoding(),
multiple_geometries_));
}
else
{
return featureset_ptr(new ogr_featureset (*dataset_,
*layer_,
q.get_bbox(),
desc_.get_encoding(),
multiple_geometries_));
}
}
return featureset_ptr();
}示例3: features
featureset_ptr shape_datasource::features(const query& q) const
{
if (!is_bound_) bind();
filter_in_box filter(q.get_bbox());
if (indexed_)
{
shape_->shp().seek(0);
// TODO - use boost::make_shared - #760
return featureset_ptr
(new shape_index_featureset<filter_in_box>(filter,
*shape_,
q.property_names(),
desc_.get_encoding(),
shape_name_,
row_limit_));
}
else
{
return boost::make_shared<shape_featureset<filter_in_box> >(filter,
shape_name_,
q.property_names(),
desc_.get_encoding(),
file_length_,
row_limit_);
}
}示例4: features
featureset_ptr geos_datasource::features(query const& q) const
{
if (!is_bound_) bind();
const mapnik::box2d<double> extent = q.get_bbox();
std::ostringstream s;
s << "POLYGON(("
<< extent.minx() << " " << extent.miny() << ","
<< extent.maxx() << " " << extent.miny() << ","
<< extent.maxx() << " " << extent.maxy() << ","
<< extent.minx() << " " << extent.maxy() << ","
<< extent.minx() << " " << extent.miny()
<< "))";
#ifdef MAPNIK_DEBUG
clog << "GEOS Plugin: using extent: " << s.str() << endl;
#endif
return boost::make_shared<geos_featureset>(*geometry_,
GEOSGeomFromWKT(s.str().c_str()),
geometry_id_,
geometry_data_,
geometry_data_name_,
desc_.get_encoding(),
multiple_geometries_);
}示例5: features
featureset_ptr shape_datasource::features(query const& q) const
{
#ifdef MAPNIK_STATS
mapnik::progress_timer __stats__(std::clog, "shape_datasource::features");
#endif
filter_in_box filter(q.get_bbox());
if (indexed_)
{
std::unique_ptr<shape_io> shape_ptr = std::make_unique<shape_io>(shape_name_);
return featureset_ptr
(new shape_index_featureset<filter_in_box>(filter,
std::move(shape_ptr),
q.property_names(),
desc_.get_encoding(),
shape_name_,
row_limit_));
}
else
{
return std::make_shared<shape_featureset<filter_in_box> >(filter,
shape_name_,
q.property_names(),
desc_.get_encoding(),
file_length_,
row_limit_);
}
}示例6: features
featureset_ptr shape_datasource::features(const query& q) const
{
#ifdef MAPNIK_STATS
mapnik::progress_timer __stats__(std::clog, "shape_datasource::features");
#endif
filter_in_box filter(q.get_bbox());
if (indexed_)
{
shape_->shp().seek(0);
// TODO - use std::make_shared - #760
return featureset_ptr
(new shape_index_featureset<filter_in_box>(filter,
*shape_,
q.property_names(),
desc_.get_encoding(),
shape_name_,
row_limit_));
}
else
{
return std::make_shared<shape_featureset<filter_in_box> >(filter,
shape_name_,
q.property_names(),
desc_.get_encoding(),
file_length_,
row_limit_);
}
}示例7: features
featureset_ptr raster_datasource::features(query const& q) const
{
if (! is_bound_) bind();
mapnik::CoordTransform t(width_, height_, extent_, 0, 0);
mapnik::box2d<double> intersect = extent_.intersect(q.get_bbox());
mapnik::box2d<double> ext = t.forward(intersect);
const int width = int(ext.maxx() + 0.5) - int(ext.minx() + 0.5);
const int height = int(ext.maxy() + 0.5) - int(ext.miny() + 0.5);
#ifdef MAPNIK_DEBUG
std::clog << "Raster Plugin: BOX SIZE(" << width << " " << height << ")" << std::endl;
#endif
if (multi_tiles_)
{
#ifdef MAPNIK_DEBUG
std::clog << "Raster Plugin: MULTI-TILED policy" << std::endl;
#endif
tiled_multi_file_policy policy(filename_, format_, tile_size_, extent_, q.get_bbox(), width_, height_, tile_stride_);
return boost::make_shared<raster_featureset<tiled_multi_file_policy> >(policy, extent_, q);
}
else if (width * height > 512*512)
{
#ifdef MAPNIK_DEBUG
std::clog << "Raster Plugin: TILED policy" << std::endl;
#endif
tiled_file_policy policy(filename_, format_, 256, extent_, q.get_bbox(), width_, height_);
return boost::make_shared<raster_featureset<tiled_file_policy> >(policy, extent_, q);
}
else
{
#ifdef MAPNIK_DEBUG
std::clog << "Raster Plugin: SINGLE FILE" << std::endl;
#endif
raster_info info(filename_, format_, extent_, width_, height_);
single_file_policy policy(info);
return boost::make_shared<raster_featureset<single_file_policy> >(policy, extent_, q);
}
}示例8: features
featureset_ptr ogr_datasource::features(query const& q) const
{
if (! is_bound_) bind();
#ifdef MAPNIK_STATS
mapnik::progress_timer __stats__(std::clog, "ogr_datasource::features");
#endif
if (dataset_ && layer_.is_valid())
{
// First we validate query fields: https://github.com/mapnik/mapnik/issues/792
std::vector<attribute_descriptor> const& desc_ar = desc_.get_descriptors();
// feature context (schema)
mapnik::context_ptr ctx = boost::make_shared<mapnik::context_type>();
std::vector<attribute_descriptor>::const_iterator itr = desc_ar.begin();
std::vector<attribute_descriptor>::const_iterator end = desc_ar.end();
for (; itr!=end; ++itr) ctx->push(itr->get_name()); // TODO only push query attributes
validate_attribute_names(q, desc_ar);
OGRLayer* layer = layer_.layer();
if (indexed_)
{
filter_in_box filter(q.get_bbox());
return featureset_ptr(new ogr_index_featureset<filter_in_box>(ctx,
*layer,
filter,
index_name_,
desc_.get_encoding()));
}
else
{
return featureset_ptr(new ogr_featureset(ctx,
*layer,
q.get_bbox(),
desc_.get_encoding()));
}
}
return featureset_ptr();
}示例9:
raster_featureset<LookupPolicy>::raster_featureset(LookupPolicy const& policy,query const& q)
: policy_(policy),
id_(1),
extent_(q.get_bbox()),
t_(q.get_width(),q.get_height(),extent_),
curIter_(policy_.query(extent_)),
endIter_(policy_.end())
{}示例10: features
featureset_ptr shape_datasource::features(const query& q) const
{
filter_in_box filter(q.get_bbox());
if (indexed_)
{
return featureset_ptr(new shape_index_featureset<filter_in_box>(filter,shape_name_,q.property_names()));
}
return featureset_ptr(new shape_featureset<filter_in_box>(filter,shape_name_,q.property_names(),file_length_));
}示例11: features
featureset_ptr osm_datasource::features(const query& q) const
{
filter_in_box filter(q.get_bbox());
// so we need to filter osm features by bbox here...
return std::make_shared<osm_featureset<filter_in_box> >(filter,
osm_data_,
q.property_names(),
desc_.get_encoding());
}示例12:
raster_featureset<LookupPolicy>::raster_featureset(LookupPolicy const& policy,
box2d<double> const& extent,
query const& q)
: policy_(policy),
feature_id_(1),
extent_(extent),
bbox_(q.get_bbox()),
curIter_(policy_.begin()),
endIter_(policy_.end())
{
}示例13:
raster_featureset<LookupPolicy>::raster_featureset(LookupPolicy const& policy,
box2d<double> const& extent,
query const& q)
: policy_(policy),
feature_id_(1),
ctx_(boost::make_shared<mapnik::context_type>()),
extent_(extent),
bbox_(q.get_bbox()),
curIter_(policy_.begin()),
endIter_(policy_.end())
{
}示例14: features
featureset_ptr raster_datasource::features(query const& q) const
{
if (! is_bound_) bind();
mapnik::CoordTransform t(width_, height_, extent_, 0, 0);
mapnik::box2d<double> intersect = extent_.intersect(q.get_bbox());
mapnik::box2d<double> ext = t.forward(intersect);
const int width = int(ext.maxx() + 0.5) - int(ext.minx() + 0.5);
const int height = int(ext.maxy() + 0.5) - int(ext.miny() + 0.5);
MAPNIK_LOG_DEBUG(raster) << "raster_datasource: Box size=" << width << "," << height;
if (multi_tiles_)
{
MAPNIK_LOG_DEBUG(raster) << "raster_datasource: Multi-Tiled policy";
tiled_multi_file_policy policy(filename_, format_, tile_size_, extent_, q.get_bbox(), width_, height_, tile_stride_);
return boost::make_shared<raster_featureset<tiled_multi_file_policy> >(policy, extent_, q);
}
else if (width * height > (tile_size_ * tile_size_ << 2))
{
MAPNIK_LOG_DEBUG(raster) << "raster_datasource: Tiled policy";
tiled_file_policy policy(filename_, format_, tile_size_, extent_, q.get_bbox(), width_, height_);
return boost::make_shared<raster_featureset<tiled_file_policy> >(policy, extent_, q);
}
else
{
MAPNIK_LOG_DEBUG(raster) << "raster_datasource: Single file";
raster_info info(filename_, format_, extent_, width_, height_);
single_file_policy policy(info);
return boost::make_shared<raster_featureset<single_file_policy> >(policy, extent_, q);
}
}示例15: features
featureset_ptr occi_datasource::features(query const& q) const
{
#ifdef MAPNIK_STATS
mapnik::progress_timer __stats__(std::clog, "occi_datasource::features");
#endif
box2d<double> const& box = q.get_bbox();
const double px_gw = 1.0 / std::get<0>(q.resolution());
const double px_gh = 1.0 / std::get<1>(q.resolution());
const double scale_denom = q.scale_denominator();
std::ostringstream s;
s << "SELECT ";
if (use_wkb_)
{
s << "SDO_UTIL.TO_WKBGEOMETRY(" << geometry_field_ << ")";
}
else
{
s << geometry_field_;
}
std::set<std::string> const& props = q.property_names();
std::set<std::string>::const_iterator pos = props.begin();
std::set<std::string>::const_iterator end = props.end();
mapnik::context_ptr ctx = std::make_shared<mapnik::context_type>();
for (; pos != end; ++pos)
{
s << ", " << *pos;
ctx->push(*pos);
}
std::string query = populate_tokens(table_, scale_denom, box, px_gw, px_gh);
if (use_spatial_index_)
{
std::ostringstream spatial_sql;
spatial_sql << " WHERE SDO_FILTER(";
spatial_sql << geometry_field_ << "," << sql_bbox(box);
spatial_sql << ", 'querytype = WINDOW') = 'TRUE'";
if (boost::algorithm::ifind_first(query, "WHERE"))
{
boost::algorithm::ireplace_first(query, "WHERE", spatial_sql.str() + " AND ");
}
else if (boost::algorithm::ifind_first(query, table_name_))
{
boost::algorithm::ireplace_first(query, table_name_, table_name_ + " " + spatial_sql.str());
}
else
{
MAPNIK_LOG_WARN(occi) << "occi_datasource: cannot determine where to add the spatial filter declaration";
}
}
s << " FROM " << query;
if (row_limit_ > 0)
{
s << " WHERE ROWNUM < " << row_limit_;
}
MAPNIK_LOG_DEBUG(occi) << "occi_datasource: " << s.str();
return std::make_shared<occi_featureset>(pool_,
conn_,
ctx,
s.str(),
desc_.get_encoding(),
use_connection_pool_,
use_wkb_,
row_prefetch_);
}