You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
95 lines
4.1 KiB
C
95 lines
4.1 KiB
C
2 years ago
|
// Copyright 2008, Google Inc. All rights reserved.
|
||
|
|
//
|
||
|
|
// Redistribution and use in source and binary forms, with or without
|
||
|
|
// modification, are permitted provided that the following conditions are met:
|
||
|
|
//
|
||
|
|
// 1. Redistributions of source code must retain the above copyright notice,
|
||
|
|
// this list of conditions and the following disclaimer.
|
||
|
|
// 2. Redistributions in binary form must reproduce the above copyright notice,
|
||
|
|
// this list of conditions and the following disclaimer in the documentation
|
||
|
|
// and/or other materials provided with the distribution.
|
||
|
|
// 3. Neither the name of Google Inc. nor the names of its contributors may be
|
||
|
|
// used to endorse or promote products derived from this software without
|
||
|
|
// specific prior written permission.
|
||
|
|
//
|
||
|
|
// THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
|
||
|
|
// WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
|
||
|
|
// MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
|
||
|
|
// EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
||
|
|
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
|
||
|
|
// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
|
||
|
|
// OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
|
||
|
|
// WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
|
||
|
|
// OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
|
||
|
|
// ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
||
|
|
|
||
|
|
// This file contains the declarations of location-related utilities.
|
||
|
|
// Since the location of a Feature or Geometry is closely tied to KML
|
||
|
|
// these functions are considered part of the KML Engine and not
|
||
|
|
// simply pure convenenience.
|
||
|
|
|
||
|
|
#ifndef KML_ENGINE_LOCATION_UTIL_H__
|
||
|
|
#define KML_ENGINE_LOCATION_UTIL_H__
|
||
|
|
|
||
|
|
#include "kml/dom.h"
|
||
|
|
|
||
|
|
namespace kmlengine {
|
||
|
|
|
||
|
|
class Bbox;
|
||
|
|
|
||
|
|
// This returns the latitude half way between the north and south and
|
||
|
|
// the longitude half way between the east and west of the given LatLonBox
|
||
|
|
// or LatLonAltBox.
|
||
|
|
void GetCenter(const kmldom::AbstractLatLonBoxPtr& allb,
|
||
|
|
double* lat, double* lon);
|
||
|
|
|
||
|
|
// This returns the n,s,e,w bounds of the given list of coordinates. This
|
||
|
|
// returns true if the coordinates are not empty. A NULL bbox is ignored.
|
||
|
|
bool GetCoordinatesBounds(const kmldom::CoordinatesPtr& coordinates,
|
||
|
|
Bbox* bbox);
|
||
|
|
|
||
|
|
// This returns the n,s,e,w bounds of the given Feature. If the Feature is
|
||
|
|
// a Container this is the bounds of all Features within that Container
|
||
|
|
// recursively. This returns true if the coordinates are not empty.
|
||
|
|
// A NULL bbox is ignored.
|
||
|
|
bool GetFeatureBounds(const kmldom::FeaturePtr& placemark, Bbox* bbox);
|
||
|
|
|
||
|
|
// Return the location of the Feature.
|
||
|
|
bool GetFeatureLatLon(const kmldom::FeaturePtr& placemark,
|
||
|
|
double* lat, double* lon);
|
||
|
|
|
||
|
|
// This returns the bounding box of any Geometry including: Point, LineString,
|
||
|
|
// LinearRing, Polygon, Model, and MultiGeometry. If the Geometry has no
|
||
|
|
// location (empty or missing <coordinates>, for example) false is returned.
|
||
|
|
// A NULL bbox is ignored and does not affect the return value.
|
||
|
|
bool GetGeometryBounds(const kmldom::GeometryPtr& geometry, Bbox* bbox);
|
||
|
|
|
||
|
|
// Return the location of the Geometry.
|
||
|
|
bool GetGeometryLatLon(const kmldom::GeometryPtr& geometry,
|
||
|
|
double* lat, double* lon);
|
||
|
|
|
||
|
|
// This returns the bounds of the coordinates child of the given element.
|
||
|
|
// CP can be one of LineString, LinearRing or Point.
|
||
|
|
template<class CP>
|
||
|
|
bool GetCoordinatesParentBounds(const CP& cp, Bbox* bbox) {
|
||
|
|
return cp && cp->has_coordinates() &&
|
||
|
|
GetCoordinatesBounds(cp->get_coordinates(), bbox);
|
||
|
|
}
|
||
|
|
|
||
|
|
// Return the bounds of the Model.
|
||
|
|
bool GetModelBounds(const kmldom::ModelPtr& model, Bbox* bbox);
|
||
|
|
|
||
|
|
// Return the location of the Model.
|
||
|
|
bool GetModelLatLon(const kmldom::ModelPtr& model, double* lat, double* lon);
|
||
|
|
|
||
|
|
// Return the location of the Placemark.
|
||
|
|
bool GetPlacemarkLatLon(const kmldom::PlacemarkPtr& placemark,
|
||
|
|
double* lat, double* lon);
|
||
|
|
|
||
|
|
// Return the location of the Point.
|
||
|
|
bool GetPointLatLon(const kmldom::PointPtr& point, double* lat, double* lon);
|
||
|
|
|
||
|
|
} // end namespace kmlengine
|
||
|
|
|
||
|
|
#endif // KML_ENGINE_LOCATION_UTIL_H__
|