makVrv::DtGeocentricGridLinesDrawer Class Reference

vrvGraphics-based implementation of 2D Grid Lines on geocentric databases More...

Inheritance diagram for makVrv::DtGeocentricGridLinesDrawer:

Public Member Functions
	DtGeocentricGridLinesDrawer (DtDe &de)
	CTOR.
virtual	~DtGeocentricGridLinesDrawer ()
	DTOR.
virtual void	drawGridLines ()
	Main entry point - draw the geocentric grid lines.
virtual void	setScale (double scale)
	Set the current observer 2D scale.
virtual void	setObserverPosition (const DtVector &position)
	Set the observer position.
virtual void	setChannelDimensions (int startChannelX, int startChannelY, int endChannelX, int endChannelY)
	Override to set up expansion values.
Public Member Functions inherited from makVrv::DtGridLinesDrawer
	DtGridLinesDrawer (DtDe &de)
	Default CTOR.
virtual	~DtGridLinesDrawer ()
	Virtual DTOR.
virtual void	setChannel (DtOsgChannel *channel)
	Set the channel to draw the grid lines on.
virtual void	setupOverlay ()
	Get the overlay to use for our channel.
virtual void	setupFont ()
	Get the font to use fron the font manager.
virtual double	lookupClosestLatLonSpacing (double minimumSpacingRadians)
	Find the best allowable lat,lon spacing given the minimum requirement.
virtual double	lookupClosestCartesianSpacing (double minimumSpacing)
	Find the best allowable cartesian spacing given the minimum requirement.
Public Member Functions inherited from makVrv::DtGridLinesParameters
	DtGridLinesParameters ()
	CTOR.
virtual	~DtGridLinesParameters ()
	DTOR.
	DtGridLinesParameters (const DtGridLinesParameters &orig)
	Copy constructor.
DtGridLinesParameters &	operator= (const DtGridLinesParameters &orig)
	\ brief Assignment operator
virtual void	setGridType (makArchives::DtDisplayUnitsSettingsRecord::CoordSys gridType)
	Set the grid type.
virtual void	setUnitType (makArchives::DtDisplayUnitsSettingsRecord::DistanceUnits unitType)
	Set the unit type.
virtual void	setUnitType (makArchives::DtDisplayUnitsSettingsRecord::OrientationUnits unitType)
	Set the unit type.
virtual void	setAutoSpacing (bool autoSpacing)
	Set whether auto spacing is used.
virtual void	setMinSpacing (int pixels)
	Set the minimum pixel spacing for auto spacing.
virtual void	setFixedSpacingAmount (double amount)
	Set the fixed spacing amount.
virtual void	setXOffset (double offset)
	Set the x offset for the origin in current units.
virtual void	setYOffset (double offset)
	Set the y offset amount in current units.
virtual void	setDecimalPlaces (unsigned decimalPlaces)
	Set the number of decimals or, in the case of MGRS, decimalPlaces.
virtual void	setMaxGridLines (int maxGridLines)
	Set the max number of grid lines in each direction.
virtual void	setEastWestGridLineColor (float r, float g, float b, float a)
	Set the color of east-west grid lines.
virtual void	setEastWestLabelColor (float r, float g, float b, float a)
	Set the color of the labels on east-west grid lines.
virtual void	setNorthSouthGridLineColor (float r, float g, float b, float a)
	Set the color of north-south grid lines.
virtual void	setNorthSouthLabelColor (float r, float g, float b, float a)
	Set the color of the labels north-south grid lines.
virtual void	setLabelFont (const std::string &fontName)
	Set the font used for labels.
virtual void	setLabelPointSize (int pointSize)
	Set the point size used for labels.
virtual void	setLabelXOffset (int pixels)
	Set the offset of labels from the bottom of the screen.
virtual void	setLabelYOffset (int pixels)
	Set the offset of labels from the left side of the screen.
virtual void	setLabelTextWidth (int width)
	Set the width of the box used to display text in.
virtual void	setLabelTextHeight (int height)
	Set the height of the box used to display text in.
virtual void	setGridLineWidth (float width)
	Set the width of grid lines.

Protected Types
typedef std::vector < DtLineSegment * >	GridLine
typedef std::vector< GridLine >	GridLineVector
typedef std::vector < DtTextProxy * >	LabelArray

Protected Member Functions
virtual void	setupReferenceEllipsoid ()
	Set up a reference ellipsoid for the current coordinate system that can be reused for all geodetic coordinate objects.
virtual void	setupTopoGeocTransforms ()
	Set up transforms between Geocentric and geodetic coordinates.
virtual bool	pointVisible (const DtVector &point) const
	Determine if the geocentric point specified could be visible (ignoring the current observer orientation)
virtual void	findPolarSpacing ()
	Determine the spacings to use when one of the poles is visible.
virtual void	drawPolarLongitudeLines ()
	Draw the longitude lines when one of the poles is visible.
virtual void	drawPolarLatitudeLines ()
	Draw the latitude lines when one of the poles is visible.
virtual void	findLatLonWindowDimensions ()
	Find the range of longitude and latitude to draw lines over based on the window dimensions (and scale and observer position)
virtual void	findSpacing ()
	Determine the spacings to use when neither pole is visible.
virtual void	anchorAndOffsetLines ()
	find the correct starting point for longitude and latitude lines given the current spacing and offsets specified
virtual void	drawLongitudeLines ()
	Draw the longitude lines when neither pole is visible.
virtual void	drawLatitudeLines ()
	Draw the latitude lines when neither pole is visible.
virtual void	createLabel (DtTextProxy *&label, double radians, bool isLongitude)
	Create a label.
virtual void	destroyGridLines ()
	Destroy all grid lines.
virtual bool	clip3D (const DtVector &pointA, const DtVector &pointB, DtVector &clippedA, DtVector &clippedB) const
	Returns false if A and B are beyond the clip plane.
virtual void	clearUnusedLinesAndLabels (int index, GridLineVector &lines, LabelArray &labels)
	Deallocates all segments and labels for indices at and above the provided index in the provided GridLineVector.
virtual void	clearUnusedSegments (int index, GridLine &line)
	Deallocates all line segments at and above the provided index in the provided GridLine.
virtual void	destroyLinesAndLabels (GridLineVector &lines, LabelArray &labels)
	Deallocates all line segments and all labels in the GridLineVector and label arrays provided.
virtual void	resizeLinesAndLabels (GridLineVector &lines, LabelArray &labels, int numLines)
	Set the number of lines to draw in a frame Will resize /cleanup current memory allocations for lines and labels.
virtual bool	drawLineSegment (DtLineSegment *&segment, const DtVector &start, const DtVector &end, float *colorArray, bool *pass3D=0)
	Draw a geocentric line segment, if its visible.
virtual GridLine &	getSegmentedLine (GridLineVector &lines, int index, int numSegments)
	Returns the line from the line vector at the specified index with enough segment pointers allocated.

Protected Attributes
GridLineVector	myLongitudeLines
GridLineVector	myLatitudeLines
LabelArray	myLongitudeLabels
LabelArray	myLatitudeLabels
double	myLatSpacing
double	myLonSpacing
double	myScale
unsigned int	myChannelSize
DtVector	myObserverPosition
double	myObserverLatitude
double	myObserverLongitude
int	myChannelExpansionX
int	myChannelExpansionY
DtVector	myClipNormal
double	myStartLat
double	myEndLat
double	myStartLon
double	myEndLon
DtCoordTransform	myGeocToTopoTransform
DtCoordTransform	myTopoToGeocTransform
DtReferenceEllipsoid	myReferenceEllipsoid
double	myAnchoredStartLat
double	myAnchoredEndLat
double	myAnchoredStartLon
double	myAnchoredEndLon
bool	myLatCrossesPole
Protected Attributes inherited from makVrv::DtGridLinesDrawer
DtDe &	myDe
DtOsgChannel *	myChannel
osg::Matrix	myWorldToWindowMatrix
int	myStartChannelX
int	myStartChannelY
int	myEndChannelX
int	myEndChannelY
DtOverlayRenderer *	myOverlayRenderer
DtFontSP	myFont
std::vector< double >	myLatLonAllowableSpacings
std::vector< double >	myCartesianAllowableSpacings
Protected Attributes inherited from makVrv::DtGridLinesParameters
makArchives::DtDisplayUnitsSettingsRecord::CoordSys	myGridType
bool	myUnitTypeIsAngular
makArchives::DtDisplayUnitsSettingsRecord::DistanceUnits	myUnitType
makArchives::DtDisplayUnitsSettingsRecord::OrientationUnits	myAngularUnitType
bool	myAutoSpacing
int	myMinSpacing
double	mySpacing
double	myXOffset
double	myYOffset
unsigned	myDecimalPlaces
int	myMaxGridLines
float	myEastWestGridLineColor [4]
float	myEastWestLabelColor [4]
float	myNorthSouthGridLineColor [4]
float	myNorthSouthLabelColor [4]
std::string	myLabelFont
int	myLabelPointSize
int	myLabelXOffset
int	myLabelYOffset
int	myLabelTextWidth
int	myLabelTextHeight
float	myGridLineWidth

Private Member Functions
	DtGeocentricGridLinesDrawer (const DtGeocentricGridLinesDrawer &orig)
	Unimplemented Copy Constructor.
DtGeocentricGridLinesDrawer &	operator= (const DtGeocentricGridLinesDrawer &rhs)
	Unimplemented assignment operator.

Additional Inherited Members
Static Protected Member Functions inherited from makVrv::DtGridLinesDrawer
static bool	clip (double xMin, double xMax, double yMin, double yMax, double x0src, double y0src, double x1src, double y1src, double &x0clip, double &y0clip, double &x1clip, double &y1clip)
	2D clipping routine. Implements Liang / Barsky Clipping

Detailed Description

vrvGraphics-based implementation of 2D Grid Lines on geocentric databases

Member Typedef Documentation

typedef std::vector<DtLineSegment*> makVrv::DtGeocentricGridLinesDrawer::GridLine

protected

typedef std::vector<GridLine> makVrv::DtGeocentricGridLinesDrawer::GridLineVector

protected

typedef std::vector<DtTextProxy*> makVrv::DtGeocentricGridLinesDrawer::LabelArray

protected

Constructor & Destructor Documentation

makVrv::DtGeocentricGridLinesDrawer::DtGeocentricGridLinesDrawer

(

DtDe &

de

)

CTOR.

virtual makVrv::DtGeocentricGridLinesDrawer::~DtGeocentricGridLinesDrawer ( )

virtual

DTOR.

makVrv::DtGeocentricGridLinesDrawer::DtGeocentricGridLinesDrawer ( const DtGeocentricGridLinesDrawer &  orig )

private

Unimplemented Copy Constructor.

Member Function Documentation

virtual void makVrv::DtGeocentricGridLinesDrawer::drawGridLines ( )

virtual

Main entry point - draw the geocentric grid lines.

virtual void makVrv::DtGeocentricGridLinesDrawer::setScale ( double  scale )

virtual

Set the current observer 2D scale.

virtual void makVrv::DtGeocentricGridLinesDrawer::setObserverPosition ( const DtVector &  position )

virtual

Set the observer position.

virtual void makVrv::DtGeocentricGridLinesDrawer::setChannelDimensions ( int  startChannelX, int  startChannelY, int  endChannelX, int  endChannelY  )

virtual

Override to set up expansion values.

Reimplemented from makVrv::DtGridLinesDrawer.

virtual void makVrv::DtGeocentricGridLinesDrawer::setupReferenceEllipsoid ( )

protectedvirtual

Set up a reference ellipsoid for the current coordinate system that can be reused for all geodetic coordinate objects.

virtual void makVrv::DtGeocentricGridLinesDrawer::setupTopoGeocTransforms ( )

protectedvirtual

Set up transforms between Geocentric and geodetic coordinates.

virtual bool makVrv::DtGeocentricGridLinesDrawer::pointVisible ( const DtVector &  point ) const

protectedvirtual

Determine if the geocentric point specified could be visible (ignoring the current observer orientation)

virtual void makVrv::DtGeocentricGridLinesDrawer::findPolarSpacing ( )

protectedvirtual

Determine the spacings to use when one of the poles is visible.

virtual void makVrv::DtGeocentricGridLinesDrawer::drawPolarLongitudeLines ( )

protectedvirtual

Draw the longitude lines when one of the poles is visible.

virtual void makVrv::DtGeocentricGridLinesDrawer::drawPolarLatitudeLines ( )

protectedvirtual

Draw the latitude lines when one of the poles is visible.

virtual void makVrv::DtGeocentricGridLinesDrawer::findLatLonWindowDimensions ( )

protectedvirtual

Find the range of longitude and latitude to draw lines over based on the window dimensions (and scale and observer position)

virtual void makVrv::DtGeocentricGridLinesDrawer::findSpacing ( )

protectedvirtual

Determine the spacings to use when neither pole is visible.

virtual void makVrv::DtGeocentricGridLinesDrawer::anchorAndOffsetLines ( )

protectedvirtual

find the correct starting point for longitude and latitude lines given the current spacing and offsets specified

virtual void makVrv::DtGeocentricGridLinesDrawer::drawLongitudeLines ( )

protectedvirtual

Draw the longitude lines when neither pole is visible.

virtual void makVrv::DtGeocentricGridLinesDrawer::drawLatitudeLines ( )

protectedvirtual

Draw the latitude lines when neither pole is visible.

virtual void makVrv::DtGeocentricGridLinesDrawer::createLabel ( DtTextProxy *&  label, double  radians, bool  isLongitude  )

protectedvirtual

Create a label.

virtual void makVrv::DtGeocentricGridLinesDrawer::destroyGridLines ( )

protectedvirtual

Destroy all grid lines.

virtual bool makVrv::DtGeocentricGridLinesDrawer::clip3D ( const DtVector &  pointA, const DtVector &  pointB, DtVector &  clippedA, DtVector &  clippedB  ) const

protectedvirtual

Returns false if A and B are beyond the clip plane.

True if either/both are not, and returns correctly clipped values

virtual void makVrv::DtGeocentricGridLinesDrawer::clearUnusedLinesAndLabels ( int  index, GridLineVector &  lines, LabelArray &  labels  )

protectedvirtual

Deallocates all segments and labels for indices at and above the provided index in the provided GridLineVector.

virtual void makVrv::DtGeocentricGridLinesDrawer::clearUnusedSegments ( int  index, GridLine &  line  )

protectedvirtual

Deallocates all line segments at and above the provided index in the provided GridLine.

virtual void makVrv::DtGeocentricGridLinesDrawer::destroyLinesAndLabels ( GridLineVector &  lines, LabelArray &  labels  )

protectedvirtual

Deallocates all line segments and all labels in the GridLineVector and label arrays provided.

virtual void makVrv::DtGeocentricGridLinesDrawer::resizeLinesAndLabels ( GridLineVector &  lines, LabelArray &  labels, int  numLines  )

protectedvirtual

Set the number of lines to draw in a frame Will resize /cleanup current memory allocations for lines and labels.

virtual bool makVrv::DtGeocentricGridLinesDrawer::drawLineSegment ( DtLineSegment *&  segment, const DtVector &  start, const DtVector &  end, float *  colorArray, bool *  pass3D = 0  )

protectedvirtual

Draw a geocentric line segment, if its visible.

Will create if necessary. If the caller wants to know if its 3D-clipped, provide pass3D

virtual GridLine& makVrv::DtGeocentricGridLinesDrawer::getSegmentedLine ( GridLineVector &  lines, int  index, int  numSegments  )

protectedvirtual

Returns the line from the line vector at the specified index with enough segment pointers allocated.

DtGeocentricGridLinesDrawer& makVrv::DtGeocentricGridLinesDrawer::operator= ( const DtGeocentricGridLinesDrawer &  rhs )

private

Unimplemented assignment operator.

Member Data Documentation

GridLineVector makVrv::DtGeocentricGridLinesDrawer::myLongitudeLines

protected

GridLineVector makVrv::DtGeocentricGridLinesDrawer::myLatitudeLines

protected

LabelArray makVrv::DtGeocentricGridLinesDrawer::myLongitudeLabels

protected

LabelArray makVrv::DtGeocentricGridLinesDrawer::myLatitudeLabels

protected

double makVrv::DtGeocentricGridLinesDrawer::myLatSpacing

protected

double makVrv::DtGeocentricGridLinesDrawer::myLonSpacing

protected

double makVrv::DtGeocentricGridLinesDrawer::myScale

protected

unsigned int makVrv::DtGeocentricGridLinesDrawer::myChannelSize

protected

DtVector makVrv::DtGeocentricGridLinesDrawer::myObserverPosition

protected

double makVrv::DtGeocentricGridLinesDrawer::myObserverLatitude

protected

double makVrv::DtGeocentricGridLinesDrawer::myObserverLongitude

protected

int makVrv::DtGeocentricGridLinesDrawer::myChannelExpansionX

protected

int makVrv::DtGeocentricGridLinesDrawer::myChannelExpansionY

protected

DtVector makVrv::DtGeocentricGridLinesDrawer::myClipNormal

protected

double makVrv::DtGeocentricGridLinesDrawer::myStartLat

protected

double makVrv::DtGeocentricGridLinesDrawer::myEndLat

protected

double makVrv::DtGeocentricGridLinesDrawer::myStartLon

protected

double makVrv::DtGeocentricGridLinesDrawer::myEndLon

protected

DtCoordTransform makVrv::DtGeocentricGridLinesDrawer::myGeocToTopoTransform

protected

DtCoordTransform makVrv::DtGeocentricGridLinesDrawer::myTopoToGeocTransform

protected

DtReferenceEllipsoid makVrv::DtGeocentricGridLinesDrawer::myReferenceEllipsoid

protected

double makVrv::DtGeocentricGridLinesDrawer::myAnchoredStartLat

protected

double makVrv::DtGeocentricGridLinesDrawer::myAnchoredEndLat

protected

double makVrv::DtGeocentricGridLinesDrawer::myAnchoredStartLon

protected

double makVrv::DtGeocentricGridLinesDrawer::myAnchoredEndLon

protected

bool makVrv::DtGeocentricGridLinesDrawer::myLatCrossesPole

protected

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The documentation for this class was generated from the following file:

• /exports/nfedora7-1/nightly/docs/vrforcesDevelopment.vrf4-6-branch/include/vrvOsg/DtGeocentricGridLinesDrawer.h