/usr/include/osgEarthUtil/ObjectLocator is in libosgearth-dev 2.5.0+dfsg-8build1.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 | #ifndef OSGEARTH_UTIL_OBJECT_LOCATOR_H
#define OSGEARTH_UTIL_OBJECT_LOCATOR_H
#include <osgEarthUtil/Common>
#include <osgEarth/Map>
#include <osgEarth/Revisioning>
#include <osg/MatrixTransform>
namespace osgEarth { namespace Util
{
using namespace osgEarth;
/**
* ObjectLocator - a revisioned object that generates a positional matrix for a node.
*/
class OSGEARTHUTIL_EXPORT ObjectLocator : public osg::Referenced, public Revisioned
{
public:
/** Flags that represent separable location components. */
enum Components {
COMP_NONE = 0x00,
COMP_POSITION = 0x01,
COMP_HEADING = 0x02,
COMP_PITCH = 0x04,
COMP_ROLL = 0x08,
COMP_ORIENTATION = COMP_HEADING | COMP_PITCH | COMP_ROLL,
COMP_ALL = COMP_POSITION | COMP_ORIENTATION
};
/** The order in which rotation are calculated */
enum RotationOrder {
HPR,
RPH
};
public:
/**
* Constructs a new locator that will generate positional matricies based on
* the specified SRS and rotation order.
*/
ObjectLocator( const osgEarth::Map* map );
/**
* Constucts a new relative locator that inherits the mask of specified
* components from a parent locator.
*/
ObjectLocator(ObjectLocator* parent, unsigned int compsToInherit =COMP_ALL );
/** dtor */
virtual ~ObjectLocator() { }
/**
* Sets the absolute OR relative positioning of this locator (depending on whether
* this locator has a parent). Units conform to this Locator's SRS.
*/
void setPosition( const osg::Vec3d& pos );
const osg::Vec3d& getPosition() const { return _pos; }
/**
* Sets the absolute OR relative orientation of this locator (depending on whether
* this locator has a parent). Units are Euler angle degrees.
*/
void setOrientation( const osg::Vec3d& hpr_deg );
const osg::Vec3d& getOrientation() const { return _hpr; }
/**
* The timestamp associated with this locator's position information.
* (Note: setting the time does not "dirty" the locator)
*/
void setTime( double t ) { _timestamp = t; }
double getTime() const { return _timestamp; }
/**
* The order in which to calculate heading, pitch, and roll rotations
*/
void setRotationOrder( RotationOrder value ) { _rotOrder = value; }
RotationOrder getRotationOrder() const { return _rotOrder; }
/**
* The optional parent locator. If a Locator has a parent, it inherits position and
* orientation from that parent as prescribed by the Components flags. Otherwise,
* the Locator is absolute.
*/
void setParentLocator( ObjectLocator* parent, unsigned int componentsToInherit =COMP_ALL );
ObjectLocator* getParentLocator() { return _parentLoc.get(); }
const ObjectLocator* getParentLocator() const { return _parentLoc.get(); }
/** Policy for inheriting parent locator's components */
void setComponentsToInherit( unsigned int compMask );
unsigned int getComponentsToInherit() const { return _componentsToInherit; }
/** Gets the map associated with this locator. */
const Map* getMap() const { return _map.get(); }
/** Whether the locator contains a valid position/orientation. */
bool isEmpty() const;
/** Whether this location contains valid data */
bool isValid() const { return !_isEmpty && _map.valid(); }
public:
/**
* Gets the aggregate position represented by this locator,
* returning true upon success.
*/
bool getLocatorPosition( osg::Vec3d& output ) const;
/**
* Gets the aggregate positioning matrix for this locator,
* returning true upon success.
*/
bool getPositionMatrix( osg::Matrixd& output ) const;
/**
* Gets the aggregate orientation (HPR degrees) represented by this locator,
* returning true upon success.
*/
bool getLocatorOrientation( osg::Vec3d& output ) const;
/**
* Gets the aggregate orientation matrix for this locator,
* returning true upon success.
*/
bool getOrientationMatrix( osg::Matrixd& output, unsigned inherit =COMP_ALL ) const;
/**
* Gets a matrix that can be used to position and orient an object corresponding
* to this locator, returning true upon success.
*/
bool getLocatorMatrix( osg::Matrixd& output, unsigned components =COMP_ALL ) const;
public:
//override
/** Override Revisioned::inSync to track with the parent locator's revision. */
virtual bool inSyncWith( int exRev ) const;
private:
osg::observer_ptr<const osgEarth::Map> _map;
osg::ref_ptr<ObjectLocator> _parentLoc;
unsigned int _componentsToInherit; // Locator::Components mask
RotationOrder _rotOrder;
osg::Vec3d _pos;
osg::Vec3d _hpr;
double _timestamp;
bool _isEmpty;
};
/**
* A transform node that tracks the position/orientation information in an ObjectLocator.
*/
class OSGEARTHUTIL_EXPORT ObjectLocatorNode : public osg::MatrixTransform
{
public:
ObjectLocatorNode();
ObjectLocatorNode( ObjectLocator* locator );
ObjectLocatorNode( const Map* map );
ObjectLocatorNode( const ObjectLocatorNode& rhs, const osg::CopyOp& =osg::CopyOp::SHALLOW_COPY );
META_Node(osgEarthUtil, ObjectLocatorNode);
public:
/**
* The locator creates the positioning matrix for the component.
*/
void setLocator( ObjectLocator* locator );
ObjectLocator* getLocator() { return _locator.get(); }
const ObjectLocator* getLocator() const { return _locator.get(); }
public:
/** Synchronizes the transform matrix with the locator. */
virtual void update();
virtual void traverse(osg::NodeVisitor &nv);
private:
osg::ref_ptr<ObjectLocator> _locator;
osgEarth::Revision _matrixRevision;
};
} } // namespace osgEarth::Util
#endif // OSGEARTH_UTIL_OBJECT_LOCATOR_H
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